Lasse Løvstakken

About

My research interests is targeted towards medical ultrasound imaging, a method where echoes from high-frequency sound waves emitted into the body can be used to make images and measure properties of tissue and blood flow. Ultrasound imaging technology has had a remarkable development in recent years, providing a basis for clearer images that can be used to obtain a more certain medical diagnosis in the future healthcare.

Follow this link to read more about one of my on-going research projects where we are developing and evaluating 3D ultrasound imaging of blood flow in the hearts of children and adults: http://blog.medisin.ntnu.no/3d-ultralydbilder-av-blodstrom-kan-gi-bedre-forstaelse-av-hjertesykdom/

Publications

2026

Tveten, Ingrid Elisabeth; Nyberg, John; Grue, Jahn Frederik; Helland, Ragnhild Holden; Melichova, Daniela; Nguyen, Thuy Mi; Brunvand, Harald; Edvardsen, Thor; Haugaa, Kristina Ingrid Helena Hermann; Dalen, Håvard. (2026) Deep learning segmentation and quantification of the left ventricle from the parasternal short axis view. European Heart Journal-Cardiovascular Imaging
Conference abstract
Dukefoss, Henrik B.; Andresen, Kristoffer; Harbo, Markus Borge; Hasselberg, Nina Eide; Grødem, Herman; Korsæth, Truls; Romundstad, Henrik; Moe, Kjell Kristoffer W.; Løvstakken, Lasse; Gude, Einar. (2026) Validation of shear wave elastography for assessing myocardial fibrosis in patients with end-stage heart failure. European Heart Journal-Cardiovascular Imaging
Academic article

2025

Azad, Md Abulkalam; Nyberg, John; Dalen, Håvard; Grenne, Bjørnar Leangen; Løvstakken, Lasse; Østvik, Andreas. (2025) Taming Modern Point Tracking for Speckle Tracking Echocardiography via Impartial Motion. IEEE International Conference on Computer Vision Workshop (ICCVW)
Conference abstract
Woelfert, Ada; Mjølstad, Ole Christian; Dale, Ane Cecilie; Salvesen, Øyvind Olav; Lovstakken, Lasse; Dalen, Håvard; Østvik, Andreas; Grenne, Bjørnar Leangen. (2025) The impact of heart rate on echocardiographic measures of left ventricular function: Novel insights facilitated by deep learning. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Chernyshov, Artem; Nyberg, John Anders Tomas; Holmstrøm, Vegard; Azad, Md Abulkalam; Grenne, Bjørnar Leangen; Dalen, Håvard; Aase, Svein Arne; Løvstakken, Lasse; Østvik, Andreas. (2025) Low Complexity Point Tracking of the Myocardium in 2D Echocardiography. IEEE Access
Academic article
Kjelsrud, Anders; Løvstakken, Lasse; Smistad, Erik; Dalen, Håvard; van de Vyver, Gilles. (2025) Lightweight image segmentation for echocardiography. Proceedings - IEEE Ultrasonics Symposium
Academic article
van de Vyver, Gilles; Lenz, Aksel Try; Smistad, Erik; Olaisen, Sindre Hellum; Grenne, Bjørnar Leangen; Holte, Espen; Dalen, Håvard; Løvstakken, Lasse. (2025) Generative augmentations for improved cardiac ultrasound segmentation using diffusion models. Scientific Reports
Academic article
Tveten, Ingrid Elisabeth; Nyberg, John; Grue, Jahn Frederik; Helland, Ragnhild Holden; Melichova, Daniela; Nguyen, Thuy Mi; Brunvand, Harald; Edvardsen, Thor; Haugaa, Kristina Ingrid Helena Hermann; Dalen, Håvard. (2025) Deep Learning Segmentation and Quantification of the Left Ventricle from the Parasternal Short-Axis View in Echocardiography. Ultrasound in Medicine and Biology
Academic article
Pettersen, Håkon; Sæbø, Sigbjørn; Pasdeloup, David; Smistad, Erik; Olaisen, Sindre Hellum; Østvik, Andreas; Stølen, Stian Bergseng; Grenne, Bjørnar Leangen; Løvstakken, Lasse; Dalen, Havard. (2025) Real-time deep learning-based image guiding and automated left ventricular measurements to reduce test-retest variability. Open heart
Academic article
Witsø, Marit Helene Langset; Luo, H; Holm, T; Kristiansen, H M; Frostelid, V C; Aalen, J; Sørensen, Kristian; Fadnes, Solveig; Nyrnes, Siri Ann; Løvstakken, Lasse. (2025) Feasibility of non-invasive echocardiographic estimates of intraventricular pressure differences by blood speckle tracking in adults. European Heart Journal-Cardiovascular Imaging
Conference abstract
Jakobsen, Even Olav; Østvik, Andreas; Pasdeloup, David; Smistad, Erik; Nyberg, John; Stølen, Stian Bergseng; Løvstakken, Lasse; Grenne, Bjørnar Leangen; Holte, Espen; Dalen, Håvard. (2025) Novel automated quality indicators for echocardiography and their importance for left ventricular strain.
Conference abstract
Holmstrøm, Vegard; Smistad, Erik; Østvik, Andreas; Holte, Espen; Stølen, Stian Bergseng; Løvstakken, Lasse; Dalen, Håvard; Grenne, Bjørnar Leangen. (2025) Deep learning in echocardiography: real-time measurements of left ventricular wall thickness and chamber dimensions in the parasternal long-axis view. European Heart Journal-Cardiovascular Imaging
Academic article
Melichova, Daniela; Nyberg, John; Nguyen, Thuy Mi; Salte, Ivar Mjåland; Brunvand, Harald; Haugaa, Kristina Ingrid Helena Hermann; Edvardsen, Thor; Dalen, Håvard; Løvstakken, Lasse; Østvik, Andreas. (2025) Clinical validation of a novel fully automated measurement method for echocardiographic mechanical dispersion using deep learning. European Heart Journal-Cardiovascular Imaging
Academic article
Holmstrøm, Vegard; Smistad, Erik; Grue, Jahn Frederik; Løvstakken, Lasse; Stølen, Stian Bergseng; Dalen, Håvard; Østvik, Andreas; Holte, Espen; Grenne, Bjørnar Leangen. (2025) Deep learning in echocardiography: Fully automated B-mode MAPSE measurements in real-time. European Heart Journal-Cardiovascular Imaging
Academic article
Pasdeloup, David; Østvik, Andreas; Smistad, Erik; Nyberg, John; Jakobsen, Even Olav; Grenne, Bjørnar Leangen; Holte, Espen; Løvstakken, Lasse; Dalen, Håvard. (2025) Effect of apical foreshortening and transducer angulation on strain measurements: a quantitative investigation. European Heart Journal-Cardiovascular Imaging
Conference abstract
Hu, Jieyu; Olaisen, Sindre Hellum; Pasdeloup, David; van de Vyver, Gilles; Østvik, Andreas; Holte, Espen; Grenne, Bjørnar Leangen; Dalen, Håvard; Lovstakken, Lasse. (2025) A deep learning-based pipeline for large-scale echocardiography data curation and measurements. The European Heart Journal – Digital Health (EHJ-DH)
Academic article
Halvorsrød, Marlene Iversen; Mohajery, Mohammad; Espeland, Torvald; Salles, Sebastien Andre Roger; Støylen, Asbjørn; Løvstakken, Lasse; Grenne, Bjørnar Leangen. (2025) Mechanical wave velocities in acute myocardial infarction: an exploratory study using three-dimensional high frame rate echocardiography. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Grenne, Bjørnar Leangen; Østvik, Andreas; Dalen, Håvard; Løvstakken, Lasse. (2025) One strain to rule them all? Inter-vendor variability in global longitudinal strain—progress made, challenges remain. European Heart Journal-Cardiovascular Imaging
Editorial
Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Bøen, Gunn Catrin Fossum; Jakobsen, Even Olav; Langøy, Per Kristian Fahle; Nilsen, Hans Olav; Pasdeloup, David; Smistad, Erik; Østvik, Andreas; Løvstakken, Lasse. (2025) Real-time guidance and automated measurements using deep learning to improve echocardiographic assessment of left ventricular size and function. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Holmstrøm, Vegard; Smistad, Erik; Stølen, Stian Bergseng; Holte, Espen; Løvstakken, Lasse; Dalen, Håvard; Østvik, Andreas; Grenne, Bjørnar Leangen. (2025) Real-Time Global Longitudinal Strain During Echocardiography: A Deep Learning Platform for Improved Workflow. Journal of the American Society of Echocardiography
Academic article
Sæbø, Sigbjørn; Dalen, Håvard; Løvstakken, Lasse. (2025) Deep learning to improve echocardiography: Real-time guidance and automated measurements. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Pasdeloup, David; Østvik, Andreas; Olaisen, Sindre Hellum; Skogvoll, Eirik; Dalen, Havard; Løvstakken, Lasse. (2025) Challenges and Strategies for Deep Learning in Cardiovascular Imaging. JACC Cardiovascular Imaging
Academic article
van de Vyver, Gilles; Smistad, Erik; Løvstakken, Lasse; Dalen, Håvard. (2025) Reliable deep learning for echocardiography image analysis. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Sivaraj, Eswar; Løvstakken, Lasse; Corney, Raphaela; Fadnes, Solveig; Espeland, Torvald; Andresen, Kristoffer; Marwick, Thomas H.. (2025) Mechanical Wave Analysis at High Frame-Rate Echocardiography: Feasibility, Determinants and Normal Ranges. JACC Cardiovascular Imaging
Academic article
van de Vyver, Gilles; Måsøy, Svein-Erik; Dalen, Håvard; Grenne, Bjørnar Leangen; Holte, Espen; Olaisen, Sindre Hellum; Nyberg, John; Østvik, Andreas; Løvstakken, Lasse; Smistad, Erik. (2025) Regional Image Quality Scoring for 2-D Echocardiography Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Sørensen, Kristian; Fadnes, Solveig; Myklebust, Tor Åge; Løvstakken, Lasse; Mertens, Luc; Nyrnes, Siri Ann. (2025) Changes in left ventricular diastolic flow dynamics in the neonatal transition period and beyond. American Journal of Physiology. Heart and Circulatory Physiology
Academic article
Sørensen, Kristian; Fadnes, Solveig; Mawad, Wadi; Henry, Matthew; Flade, Hans-Martin; Østvik, Andreas; Myklebust, Tor Åge; Kirkeby-Garstad, Idar; Løvstakken, Lasse; Mertens, Luc. (2025) Intraventricular Pressure Difference Estimation based on Blood Speckle Tracking - Invasive Validation and Early Clinical Application. European Heart Journal-Cardiovascular Imaging
Academic article

2024

Woelfert, Ada; Dale, Ane Cecilie; Mjølstad, Ole Christian; Løvstakken, Lasse; Dalen, Håvard; Østvik, Andreas; Grenne, Bjørnar Leangen. (2024) The importance of heart rate on left ventricular global longitudinal strain in echocardiography: novel insights facilitated by automated deep learning methods. European Heart Journal
Conference abstract
Sauvage, Jack; Moustefaoui, Safa; Fiorentini, Stefano; Venet, Maelys; Fadnes, Solveig; Løvstakken, Lasse; Villemain, Olivier; Salles, Sebastien Andre Roger. (2024) Detection of natural pulse waves (PWs) in 3D using high frame rate imaging for anisotropy characterization. Frontiers in Physics
Academic article
Mohajery, Mohammad; Salles, Sebastien Andre Roger; Espeland, Torvald; Wigen, Morten Smedsrud; Fadnes, Solveig; Løvstakken, Lasse. (2024) The 3D Estimation of Mechanical Wave Velocities in the Heart: Methods and Insights. IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control Society (OJUFFC)
Academic article
van de Vyver, Gilles; Thomas, Sarina; Ben-Yosef, Guy; Olaisen, Sindre Hellum; Dalen, Håvard; Løvstakken, Lasse; Smistad, Erik. (2024) Toward Robust Cardiac Segmentation Using Graph Convolutional Networks. IEEE Access
Academic article
Løvstakken, Lasse; Grenne, Bjørnar Leangen. (2024) The Road to Robust and Automated Strain Measurements in Echocardiography by Deep Learning. JACC Cardiovascular Imaging
Editorial
Yari, Yasin; Næve, Ingun; Bergtun, Per Helge; Hammerdal, Asle; Måsøy, Svein-Erik; Voormolen, Marco Marien; Løvstakken, Lasse. (2024) Deep Learning for Automated Egg Maturation Prediction of Atlantic Salmon Using Ultrasound Imaging. IEEE Access
Academic article
Fermann, Benjamin Strandli; Nyberg, John; Remme, Espen; Grue, Jahn Frederik; Grue, Helén; Håland, Roger; Løvstakken, Lasse; Dalen, Håvard; Grenne, Bjørnar Leangen; Aase, Svein Arne. (2024) Cardiac Valve Event Timing in Echocardiography Using Deep Learning and Triplane Recordings. IEEE Journal of Biomedical and Health Informatics
Academic article
Nancy, Bazilchuk; Pasdeloup, David Francis Pierre; Dalen, Håvard; Løvstakken, Lasse; Måsøy, Svein-Erik. (2024) Peering into your heart – with the help of AI. Gemini (English edition)
Popular science article
Nancy, Bazilchuk; Pasdeloup, David Francis Pierre; Dalen, Håvard; Løvstakken, Lasse; Måsøy, Svein-Erik. (2024) Kunstig intelligens hjelper til med å se hjertet ditt. Gemini
Popular science article
Wifstad, Sigurd Vangen; Kildahl, Henrik Agerup; Holte, Espen; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Salvesen, Øyvind Olav; Dalen, Håvard; Løvstakken, Lasse. (2024) EasyPISA: Automatic Integrated PISA Measurements of Mitral Regurgitation From 2-D Color-Doppler Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Chernyshov, Artem; Grue, Jahn Frederik; Nyberg, John; Grenne, Bjørnar Leangen; Dalen, Håvard; Aase, Svein Arne; Østvik, Andreas; Løvstakken, Lasse. (2024) Automated Segmentation and Quantification of the Right Ventricle in 2-D Echocardiography. Ultrasound in Medicine and Biology
Academic article
Wifstad, Sigurd Vangen; Kildahl, Henrik Agerup; Grenne, Bjørnar Leangen; Holte, Espen; Hauge, Ståle Wågen; Sæbø, Sigbjørn; Mekonnen, Desalew; Nega, Berhanu; Haaverstad, Rune; Estensen, Mette-Elise. (2024) Mitral Valve Segmentation and Tracking from Transthoracic Echocardiography Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Indimath, Shivanandan; Wifstad, Sigurd Vangen; Bryon, Vincent; Bøklepp, Bjarne Rosvoll; Løvstakken, Lasse; Avdal, Jørgen; Fiorentini, Stefano; Måsøy, Svein-Erik. (2024) Subpixel segmentation of borehole fractures from low resolution Doppler ultrasound images using machine learning. Geoenergy Science and Engineering
Academic article
Nyberg, John; Østvik, Andreas; Salte, Ivar Mjåland; Olaisen, Sindre Hellum; Karlsen, Sigve; Dahlslett, Thomas; Smistad, Erik; Eriksen-Volnes, Torfinn Kirknes; Brunvand, Harald; Edvardsen, Thor. (2024) Deep learning improves test–retest reproducibility of regional strain in echocardiography. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Azad, Md Abulkalam; Chernyshov, Artem; Nyberg, John Anders Tomas; Tveten, Ingrid Elisabeth; Løvstakken, Lasse; Dalen, Håvard; Grenne, Bjørnar Leangen; Østvik, Andreas. (2024) EchoTracker: Advancing Myocardial Point Tracking in Echocardiography.
Academic chapter
Yari, Yasin; Næve, Ingun; Hammerdal, Asle; Bergtun, Per Helge; Måsøy, Svein-Erik; Voormolen, Marco Marien; Løvstakken, Lasse. (2024) Automated Measurement of Ovary Development in Atlantic Salmon Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Garone, Rosa Virginia; Lønmo, Tor Inge Birkenes; Schimel, Alexandre; Diesing, Markus; Thorsnes, Terje; Løvstakken, Lasse. (2024) Corrigendum: Seabed classification of multibeam echosounder data into bedrock/non-bedrock using deep learning(Front. Earth Sci., (2023), 11, (1285368), 10.3389/feart.2023.1285368). Frontiers in Earth Science
Corrigendum

2023

Kvalevåg, Magnus; Vrålstad, Anders Emil; Rindal, Ole Marius Hoel; Bjåstad, Tore Grüner; Dénarié, Bastien; Kristoffersen, Kjell; Måsøy, Svein-Erik; Løvstakken, Lasse. (2023) vbeam: A Fast and Differentiable Beamformer for Optimizing Ultrasound Imaging. Proceedings - IEEE Ultrasonics Symposium
Academic article
Salte, Ivar Mjåland; Østvik, Andreas; Olaisen, Sindre Hellum; Karlsen, Sigve; Dahlslett, Thomas; Smistad, Erik; Eriksen-Volnes, Torfinn Kirknes; Brunvand, Harald; Haugaa, Kristina Ingrid Helena Hermann; Edvardsen, Thor. (2023) Deep Learning for Improved Precision and Reproducibility of Left Ventricular Strain in Echocardiography: A Test-Retest Study. Journal of the American Society of Echocardiography
Academic article
Nyberg, John; Jakobsen, Even Olav; Østvik, Andreas; Holte, Espen; Stølen, Stian Bergseng; Løvstakken, Lasse; Grenne, Bjørnar Leangen; Dalen, Håvard. (2023) Echocardiographic Reference Ranges of Global Longitudinal Strain for All Cardiac Chambers Using Guideline-Directed Dedicated Views. JACC Cardiovascular Imaging
Academic article
Garone, Rosa Virginia; Lønmo, Tor Inge Birkenes; Schimel, Alexandre; Diesing, Markus; Thorsnes, Terje; Løvstakken, Lasse. (2023) Seabed classification of multibeam echosounder data into bedrock/non-bedrock using deep learning. Frontiers in Earth Science
Academic article
Espeland, Torvald; Wigen, Morten Smedsrud; Dalen, Håvard; Berg, Erik Andreas Rye; Hammer, Tommy Arild; Salles, Sebastien Andre Roger; Løvstakken, Lasse; Amundsen, Brage H.; Aakhus, Svend. (2023) Mechanical Wave Velocities in Left Ventricular Walls in Healthy Subjects and Patients With Aortic Stenosis. JACC Cardiovascular Imaging
Academic article
Salte, Ivar Mjåland; Østvik, Andreas; Olaisen, Sindre Hellum; Karlsen, Sigve; Dahlslett, Thomas; Smistad, Erik; Eriksen-Volnes, Torfinn Kirknes; Brunvand, Harald; Haugaa, Kristina Ingrid Helena Hermann; Edvardsen, Thor. (2023) Response to “Minimal Detectable Change and Reproducibility of Echocardiographic Strain: Implications for Clinical Practice”. Journal of the American Society of Echocardiography
Commentary
Henry, Matthew; Fadnes, Solveig; Løvstakken, Lasse; Mawad, Wadi; Mertens, Luc; Nyrnes, Siri Ann. (2023) Flow Dynamics in Children With Bicuspid Aortic Valve: A Blood Speckle Tracking Study. Ultrasound in Medicine and Biology
Academic article
Eriksen-Volnes, Torfinn Kirknes; Grue, Jahn Frederik; Olaisen, Sindre Hellum; Letnes, Jon Magne; Nes, Bjarne Martens; Løvstakken, Lasse; Wisløff, Ulrik; Dalen, Håvard. (2023) Normalized Echocardiographic Values From Guideline-Directed Dedicated Views for Cardiac Dimensions and Left Ventricular Function. JACC Cardiovascular Imaging
Academic article
Sørensen, Kristian; Fadnes, Solveig; Mertens, Luc; Henry, Matthew; Segers, Patrick; Løvstakken, Lasse; Nyrnes, Siri Ann. (2023) Assessment of Early Diastolic Intraventricular Pressure Difference in Children by Blood Speckle-Tracking Echocardiography. Journal of the American Society of Echocardiography
Academic article
Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Smistad, Erik; Pasdeloup, David Francis Pierre; Stølen, Stian Bergseng; Grenne, Bjørnar Leangen; Løvstakken, Lasse; Holte, Espen; Dalen, Håvard. (2023) Real-time guiding by deep learning during echocardiography to reduce left ventricular foreshortening and measurement variability. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Daae, Annichen Søyland; Wigen, Morten Smedsrud; Halvorsrød, Marlene Iversen; Løvstakken, Lasse; Støylen, Asbjørn; Fadnes, Solveig. (2023) Retrospective Ultrasound Doppler Quantification Using a Single Acquisition in Healthy Adults. Ultrasound in Medicine and Biology
Academic article
Sæbø, Sigbjørn; Pasdeloup, David Francis Pierre; Pettersen, Håkon Neergaard; Smistad, Erik; Østvik, Andreas; Olaisen, Sindre Hellum; Stølen, Stian Bergseng; Grenne, Bjørnar Leangen; Holte, Espen; Løvstakken, Lasse. (2023) Real-time guidance by deep learning of experienced operators to improve the standardization of echocardiographic acquisitions. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Szerypo Magelssen, Malgorzata Izabela; Hjorth-Hansen, Anna; Andersen, Garrett Newton; Graven, Torbjørn; Kleinau, Jens Olaf; Skjetne, Kyrre; Løvstakken, Lasse; Dalen, Håvard; Mjølstad, Ole Christian. (2023) Clinical Influence of Handheld Ultrasound, Supported by Automatic Quantification and Telemedicine, in Suspected Heart Failure. Ultrasound in Medicine and Biology
Academic article
Bryon, Vincent; Wifstad, Sigurd Vangen; Grønli, Thomas; Hu, Jieyu; Løvstakken, Lasse. (2023) Automated Patient-Specific Left Ventricular Simulations for Cardiac Function Evaluation Using Image-Based Computational Fluid Dynamics and Color Flow Imaging.
Academic chapter
Mohajery, Mohammad; Salles, Sebastien Andre Roger; Espeland, Torvald; Fadnes, Solveig; Løvstakken, Lasse. (2023) Automated 3D velocity estimation of natural mechanical wave propagation in the myocardium. IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control Society (OJUFFC)
Academic article
Hu, Jieyu; Olaisen, Sindre Hellum; Smistad, Erik; Dalen, Håvard; Løvstakken, Lasse. (2023) Automated 2-D and 3-D Left Atrial Volume Measurements Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Olaisen, Sindre Hellum; Smistad, Erik; Espeland, Torvald; Hu, Jieyu; Pasdeloup, David Francis Pierre; Østvik, Andreas; Aakhus, Svend; Rösner, Assami; Malm, Siri; Stylidis, Michael. (2023) Automatic measurements of left ventricular volumes and ejection fraction by artificial intelligence: clinical validation in real time and large databases. European Heart Journal-Cardiovascular Imaging
Academic article
Nyberg, John Anders Tomas; Jakobsen, Even Olav; Østvik, Andreas; Holte, Espen; Stølen, Stian; Løvstakken, Lasse; Grenne, Bjørnar Leangen; Dalen, Håvard. (2023) Determinants of left atrial reservoir strain in a large healthy population. European Heart Journal-Cardiovascular Imaging
Conference abstract
Pasdeloup, David Francis Pierre; Løvstakken, Lasse; Smistad, Erik; Dalen, Håvard. (2023) Deep Learning in the Echocardiography Workflow: Challenges and Opportunities. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Hu, Jieyu; Smistad, Erik; Grenne, Bjørnar Leangen; Holte, Espen; Dalen, Håvard; Løvstakken, Lasse. (2023) Left-Ventricular Volume Estimation in Contrast-Enhanced Echocardiography Using Deep Learning.
Academic chapter

2022

Smistad, Erik; Østvik, Andreas; Grue, Jahn Frederik; Dalen, Håvard; Løvstakken, Lasse. (2022) Tracking-based mitral annular plane systolic excursion (MAPSE) measurement using deep learning in B-mode ultrasound. Proceedings - IEEE Ultrasonics Symposium
Academic article
Smistad, Erik; Dalen, Håvard; Grenne, Bjørnar; Løvstakken, Lasse. (2022) Segmentation of parasternal long axis views using deep learning. Proceedings - IEEE Ultrasonics Symposium
Academic article
Wifstad, Sigurd Vangen; Løvstakken, Lasse; Avdal, Jørgen; Berg, Erik Andreas Rye; Torp, Hans; Grenne, Bjørnar; Fiorentini, Stefano. (2022) Quantifying Valve Regurgitation Using 3-D Doppler Ultrasound Images and Deep Learning. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Mawad, Wadi; Fadnes, Solveig; Løvstakken, Lasse; Henry, Matthew; Mertens, Luc; Nyrnes, Siri Ann. (2022) Pulmonary Hypertension in Children is associated with Abnormal Flow patterns in the Main Pulmonary Artery as demonstrated by Blood Speckle Tracking. CJC Pediatric and Congenital Heart Disease
Academic article
Hjorth-Hansen, Anna; Magelssen, Malgorzata Isabela; Andersen, Garrett Newton; Graven, Torbjørn; Kleinau, Jens Olaf; Landstad, Bodil; Løvstakken, Lasse; Skjetne, Kyrre; Mjølstad, Ole Christian; Dalen, Håvard. (2022) Real-time automatic quantification of left ventricular function by hand-held ultrasound devices in patients with suspected heart failure: a feasibility study of a diagnostic test with data from general practitioners, nurses and cardiologists. BMJ Open
Academic article
Nguyen, Minh B.; Villemain, Olivier; Friedberg, Mark K.; Løvstakken, Lasse; Rusin, Graig G.; Mertens, Luc. (2022) Artificial intelligence in the pediatric echocardiography laboratory: Automation, physiology, and outcomes. Frontiers in Radiology
Academic literature review
Hjorth-Hansen, Anna Katarina; Magelssen, Malgorzata Isabela; Andersen, Garrett Newton; Graven, Torbjørn; Kleinau, Jens Olaf; Landstad, Bodil; Løvstakken, Lasse; Skjetne, Kyrre; Mjølstad, Ole Christian; Dalen, Håvard. (2022) User experience and image quality influence on performance of automated real-time quantification of left ventricular function by handheld ultrasound devices: a diagnostic accuracy study with data from general practitioners, nurses and cardiologists. Open heart
Academic article
Hu, Jieyu; Smistad, Erik; Salte, Ivar Mjåland; Dalen, Håvard; Løvstakken, Lasse. (2022) Exploiting temporal information in echocardiography for improved image segmentation.
Academic chapter
Pettersen, Håkon Neergaard; Sæbø, Sigbjørn; Pasdeloup, David Francis Pierre; Østvik, Andreas; Smistad, Erik; Stølen, Stian Bergseng; Grenne, Bjørnar; Løvstakken, Lasse; Dalen, Håvard; Holte, Espen. (2022) The impact of real-time feedback by deep learning during echocardiographic scanning on test-retest variability of left ventricular systolic function measurements. European Heart Journal-Cardiovascular Imaging
Conference abstract
Chernyshov, Artem; Østvik, Andreas; Smistad, Erik; Løvstakken, Lasse. (2022) Segmentation of 2D cardiac ultrasound with deep learning: simpler models for a simple task.
Academic chapter
Leinan, Paul Roger; Grønli, Thomas; Skjetne, Paal; Wigen, Morten Smedsrud; Urheim, Stig; Løvstakken, Lasse; Dahl, Sigrid Kaarstad. (2022) Comparison of ultrasound vector flow imaging and CFD simulations with PIV measurements of flow in a left ventricular outflow trackt phantom - Implications for clinical use and in silico studies. Computers in Biology and Medicine
Academic article
Pasdeloup, David Francis Pierre; Olaisen, Sindre Hellum; Østvik, Andreas; Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Holte, Espen; Grenne, Bjørnar; Stølen, Stian Bergseng; Smistad, Erik; Aase, Svein Arne. (2022) Real-Time Echocardiography Guidance for Optimized Apical Standard Views. Ultrasound in Medicine and Biology
Academic article

2021

Smistad, Erik; Ãstvik, Andreas; LÃ¸vstakken, Lasse. (2021) Annotation Web - An open-source web-based annotation tool for ultrasound images. Proceedings - IEEE Ultrasonics Symposium
Academic article
Smistad, Erik; Salte, Ivar Mjåland; Dalen, Håvard; Lovstakken, Lasse. (2021) Real-time temporal coherent left ventricle segmentation using convolutional LSTMs. Proceedings - IEEE Ultrasonics Symposium
Academic article
Smistad, Erik; Steinsland, Erik Nikolai; LÃ¸vstakken, Lasse. (2021) Real-time 3D left ventricle segmentation and ejection fraction using deep learning. Proceedings - IEEE Ultrasonics Symposium
Academic article
Viggen, Erlend Magnus; Løvstakken, Lasse; Måsøy, Svein-Erik; Merciu, Ioan Alexandru. (2021) Better Automatic Interpretation of Cement Evaluation Logs through Feature Engineering. SPE Journal
Academic article
Henry, Matthew; Fadnes, Solveig; Løvstakken, Lasse; Mawad, Wadi; Mertens, Luc; Nyrnes, Siri Ann. (2021) Bicuspid aortic valve flow dynamics using blood speckle tracking in children. European Heart Journal-Cardiovascular Imaging
Conference abstract
Østvik, Andreas; Salte, Ivar Mjåland; Smistad, Erik; Nguyen, Thuy Mi; Melichova, Daniela; Brunvand, Harald; Haugaa, Kristina; Edvardsen, Thor; Grenne, Bjørnar; Løvstakken, Lasse. (2021) Myocardial Function Imaging in Echocardiography Using Deep Learning. IEEE Transactions on Medical Imaging
Academic article
Daae, Annichen Søyland; Wigen, Morten Smedsrud; Fadnes, Solveig; Løvstakken, Lasse; Støylen, Asbjørn. (2021) Intraventricular Vector Flow Imaging with Blood Speckle Tracking in Adults: Feasibility, Normal Physiology and Mechanisms in Healthy Volunteers. Ultrasound in Medicine and Biology
Academic article
Salte, Ivar M.; Østvik, Andreas; Smistad, Erik; Melichova, Daniela; Nguyen, Thuy Mi; Karlsen, Sigve; Brunvand, Harald; Haugaa, Kristina H.; Edvardsen, Thor; Løvstakken, Lasse. (2021) Artificial Intelligence for Automatic Measurement of Left Ventricular Strain in Echocardiography. JACC Cardiovascular Imaging
Academic article
Viggen, Erlend Magnus; Løvstakken, Lasse; Merciu, Ioan Alexandru; Måsøy, Svein-Erik. (2021) Better Automatic Interpretation of Cement Evaluation Logs through Feature Engineering.
Academic chapter
Sørensen, Kristian; Fadnes, Solveig; Salvesen, Øyvind; Mertens, Luc; Løvstakken, Lasse; Nyrnes, Siri Ann. (2021) Assessment of Regional Early Diastolic Intraventricular Pressure Gradients by Blood Speckle Tracking in Children. Journal of the American Society of Echocardiography
Conference abstract
Mawad, Wadi; Løvstakken, Lasse; Fadnes, Solveig; Grønli, Thomas; Segers, Patrick; Mertens, Luc; Nyrnes, Siri Ann. (2021) Right Ventricular Flow Dynamics in Dilated Right Ventricles: Energy Loss Estimation Based on Blood Speckle Tracking Echocardiography-A Pilot Study in Children. Ultrasound in Medicine and Biology
Academic article

2020

Sørensen, Kristian; Fadnes, Solveig; Wigen, Morten Smedsrud; Salvesen, Øyvind; Mertens, Luc; Løvstakken, Lasse; Nyrnes, Siri Ann. (2020) Assessment of Diastolic Intraventricular Pressure Gradients in Children by Blood Speckle Tracking. A Feasibility Study. Journal of the American Society of Echocardiography
Conference abstract
Viggen, Erlend Magnus; Merciu, Ioan Alexandru; Løvstakken, Lasse; Måsøy, Svein-Erik. (2020) Automatic interpretation of cement evaluation logs from cased boreholes using supervised deep neural networks. Journal of Petroleum Science and Engineering
Academic article
Ramalli, Alessandro; Rodriguez-Molares, Alfonso; Avdal, Jørgen; D'Hooge, Jan R M; Løvstakken, Lasse. (2020) High-Frame-Rate Color Doppler Echocardiography: A Quantitative Comparison of Different Approaches. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Fadnes, Solveig; Sørensen, Kristian; Nyrnes, Siri Ann; Wigen, Morten Smedsrud; Løvstakken, Lasse. (2020) Intraventricular Pressure Gradients - Vector Flow Imaging versus Color M-Mode. Proceedings - IEEE Ultrasonics Symposium
Academic article
Smistad, Erik; Østvik, Andreas; Salte, Ivar Mjåland; Melichova, Daniela; Nguyen, Thuy Mi; Haugaa, Kristina; Brunvand, Harald; Edvardsen, Thor; Leclerc, Sarah; Bernard, Olivier. (2020) Real-Time Automatic Ejection Fraction and Foreshortening Detection Using Deep Learning. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Salles, Sebastien; Espeland, Torvald; Rodriguez-Molares, Alfonso; Aase, Svein Arne; Hammer, Tommy; Støylen, Asbjørn; Aakhus, Svend; Løvstakken, Lasse; Torp, Hans. (2020) 3D Myocardial Mechanical Wave Measurements: Toward In Vivo 3D Myocardial Elasticity Mapping. JACC Cardiovascular Imaging
Academic article
Golfetto, Cristiana; Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse; Avdal, Jørgen. (2020) Retrospective Transmit beamforming and Coherent Plane-Wave Compounding for Microvascular Doppler Imaging: A Comparison Study. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Perrot, Vincent; Ekroll, Ingvild Kinn; Avdal, Jørgen; Saxhaug, Lars Mølgaard; Dalen, Håvard; Vray, Didier; Løvstakken, Lasse; Liebgott, Herve. (2020) Translation of Simultaneous Vessel Wall Motion and Vectorial Blood Flow Imaging in Healthy and Diseased Carotids to the Clinic: A pilot study. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Salles, Sebastien; Kvåle, Kaja Frøysaa; Lervik, Lars Christian Naterstad; Støylen, Asbjørn; Løvstakken, Lasse; Samset, Eigil; Torp, Hans. (2020) Detection of Tissue Fibrosis using Natural Mechanical Wave Velocity Estimation: Feasibility Study. Ultrasound in Medicine and Biology
Academic article
Sengupta, Partho P.; Shrestha, Sirish; Berthon, Béatrice; Messas, Emmanuel; Donal, Erwan; Tison, Geoffrey H.; Min, James K.; D'Hooge, Jan R M; Voigt, Jens-Uwe; Dudley, Joel. (2020) Proposed Requirements for Cardiovascular Imaging-Related Machine Learning Evaluation (PRIME): A Checklist: Reviewed by the American College of Cardiology Healthcare Innovation Council. JACC Cardiovascular Imaging
Academic literature review
Mawad, Wadi; Fadnes, Solveig; Grønli, Thomas; Løvstakken, Lasse; Mertens, Luc; Nyrnes, Siri Ann. (2020) Children with Pulmonary Hypertension Have Abnormal Flow patterns in the Main Pulmonary Artery as Shown By High Frame Rate Ultrasound Imaging. Journal of the American Society of Echocardiography
Conference abstract
Nyrnes, Siri Ann; Fadnes, Solveig; Wigen, Morten Smedsrud; Mertens, Luc; Løvstakken, Lasse. (2020) Blood Speckle-Tracking Based on High–Frame Rate Ultrasound Imaging in Pediatric Cardiology. Journal of the American Society of Echocardiography
Academic article
Leclerc, Sarah; Smistad, Erik; Østvik, Andreas; Cervenansky, Frederic; Espinosa, Florian; Espeland, Torvald; Berg, Erik Andreas Rye; Belhamissi, Mourad; Israilov, Sardor; Grenier, Thomas. (2020) LU-Net: A Multistage Attention Network to Improve the Robustness of Segmentation of Left Ventricular Structures in 2-D Echocardiography. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article

2019

Smistad, Erik; Salte, Ivar Mjåland; Østvik, Andreas; Leclerc, Sarah; Bernard, Olivier; Løvstakken, Lasse. (2019) Segmentation of apical long axis, four- and two-chamber views using deep neural networks. Proceedings - IEEE Ultrasonics Symposium
Academic article
Leclerc, Sarah; Smistad, Erik; Grenier, Thomas; Lartizien, Carole; Østvik, Andreas; Cervenansky, Frederic; Espinosa, Florian; Espeland, Torvald; Berg, Erik Andreas Rye; Jodoin, Pierre-Marc. (2019) RU-Net: A refining segmentation network for 2D echocardiography. Proceedings - IEEE Ultrasonics Symposium
Academic article
Ramalli, Alessandro; Rodriguez-Molares, Alfonso; Avdal, Jørgen; D'Hooge, Jan; Løvstakken, Lasse. (2019) High frame rate color flow echocardiography: A comparison of different imaging approaches. Journal of the Acoustical Society of America
Academic article
Karabiyik, Yücel; Avdal, Jørgen; Ekroll, Ingvild Kinn; Fiorentini, Stefano; Torp, Hans; Løvstakken, Lasse. (2019) Data Adaptive 2-D Tracking Doppler for High-Resolution Spectral Estimation. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Ramalli, Alessandro; D'Hooge, Jan; Løvstakken, Lasse; Tortoli, Piero. (2019) A Direct Measurement of Inter-Element Cross-Talk in Ultrasound Arrays. Proceedings - IEEE Ultrasonics Symposium
Academic article
Tannvik, Tomas Dybos; Rimehaug, Audun Eskeland; Wigen, Morten Smedsrud; Løvstakken, Lasse; Kirkeby-Garstad, Idar. (2019) Ventriculo-arterial interaction may be assessed by Oscillatory Power Fraction. Clinical Physiology and Functional Imaging
Academic article
Wigen, Morten Smedsrud; Løvstakken, Lasse; Fadnes, Solveig; Torp, Hans. (2019) 4D ultrasound vector flow imaging for intraventricular flow assessment. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Leclerc, Sarah; Smistad, Erik; Pedrosa, Joao; Østvik, Andreas; Cervenansky, Frederic; Espinosa, Florian; Espeland, Torvald; Berg, Erik Andreas Rye; Jodoin, Pierre-Marc; Grenier, Thomas. (2019) Deep Learning for Segmentation using an Open Large-Scale Dataset in 2D Echocardiography. IEEE Transactions on Medical Imaging
Academic article
Aakervik, Anne-Lise; Løvstakken, Lasse; Torp, Hans; Aakhus, Svend. (2019) Lydbølger som er viktig for helsa. Gemini
Popular science article
Salles, Sebastien; Løvstakken, Lasse; Aase, Svein Arne; Bjåstad, Tore Grüner; Torp, Hans. (2019) Clutter Filter Wave Imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article

2018

Østvik, Andreas; Smistad, Erik; Espeland, Torvald; Berg, Erik Andreas Rye; Løvstakken, Lasse. (2018) Automatic Myocardial Strain Imaging in Echocardiography Using Deep Learning. Lecture Notes in Computer Science (LNCS)
Academic article
Grønli, Thomas; Wigen, Morten Smedsrud; Segers, Patrick; Løvstakken, Lasse. (2018) A fast 4D B-spline framework for model-based reconstruction and regularization in vector flow imaging. Proceedings - IEEE Ultrasonics Symposium
Academic article
Smistad, Erik; Østvik, Andreas; Salte, Ivar Mjåland; Leclerc, Sarah; Bernard, Olivier; Løvstakken, Lasse. (2018) Fully automatic real-time ejection fraction and MAPSE measurements in 2D echocardiography using deep neural networks. Proceedings - IEEE Ultrasonics Symposium
Academic article
Dietrichson, Fabian Sødal; Smistad, Erik; Østvik, Andreas; Løvstakken, Lasse. (2018) Ultrasound speckle reduction using generative adversial networks. Proceedings - IEEE Ultrasonics Symposium
Academic article
Østvik, Andreas; Smistad, Erik; Aase, Svein Arne; Haugen, Bjørn Olav; Løvstakken, Lasse. (2018) Real-time Standard View Classification in Transthoracic Echocardiography using Convolutional Neural Networks. Ultrasound in Medicine and Biology
Academic article
Iversen, Daniel Høyer; Løvstakken, Lasse; Unsgård, Geirmund; Reinertsen, Ingerid. (2018) Automatic intraoperative estimation of blood flow direction during neurosurgical interventions. International Journal of Computer Assisted Radiology and Surgery
Academic article
Karabiyik, Yücel; Ekroll, Ingvild Kinn; Eik-Nes, Sturla; Løvstakken, Lasse. (2018) Quantitative Doppler analysis using conventional color flow imaging acquisitions. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Wigen, Morten Smedsrud; Fadnes, Solveig; Rodriguez-Molares, Alfonso; Bjåstad, Tore Grüner; Eriksen, Marius; Stensæth, KNUT HAAKON; Støylen, Asbjørn; Løvstakken, Lasse. (2018) 4-D Intracardiac Ultrasound Vector Flow Imaging-Feasibility and Comparison to Phase-Contrast MRI. IEEE Transactions on Medical Imaging
Academic article
Leclerc, Sarah; Smistad, Erik; Grenier, Thomas; Lartizien, Carole; Østvik, Andreas; Espinosa, Florian; Jodoin, Pierre-Marc; Løvstakken, Lasse; Bernard, Olivier. (2018) Deep learning applied to multi-structure segmentation in 2D echocardiography: A preliminary investigation of the required database size. Proceedings - IEEE Ultrasonics Symposium
Academic article
Fiorito, Adrian Meidell; Østvik, Andreas; Smistad, Erik; Leclerc, Sarah; Bernard, Olivier; Løvstakken, Lasse. (2018) Detection of Cardiac Events in Echocardiography using 3D Convolutional Recurrent Neural Networks. Proceedings - IEEE Ultrasonics Symposium
Academic article
Perrot, Vincent; Avdal, Jørgen; Løvstakken, Lasse; Salles, Sebastien; Vray, Didier; Liebgott, Herve; Ekroll, Ingvild Kinn. (2018) Spatial and temporal adaptive FIR clutter filtering. Proceedings - IEEE Ultrasonics Symposium
Academic article

2017

Fadnes, Solveig; Tegnander, Eva; Nyrnes, Siri Ann; Løvstakken, Lasse. (2017) Vector Flow Imaging of Fetal Circulation using Diverging Waves. Proceedings - IEEE Ultrasonics Symposium
Conference abstract
Santos, Pedro; Løvstakken, Lasse; Samset, Eigil; D'Hooge, Jan. (2017) Volumetric imaging of fast mechanical waves in the heart using a clinical ultrasound system. Proceedings - IEEE Ultrasonics Symposium
Academic article
Grønli, Thomas; Swillens, Abigail Emily; Segers, Patrick; Løvstakken, Lasse. (2017) Real-time assimilation and regularization of ultrasound blood velocity measurements using smoothed particle hydrodynamics. Proceedings - IEEE Ultrasonics Symposium
Conference abstract
Salles, Sebastien; Aase, Svein Arne; Bjåstad, Tore Grüner; Løvstakken, Lasse; Torp, Hans. (2017) Clutter filter wave imaging (CFWI): A new way to visualize and detect mechanical waves propagation. Proceedings - IEEE Ultrasonics Symposium
Conference abstract
Karabiyik, Yucel; Løvstakken, Lasse; Ekroll, Ingvild Kinn; Torp, Hans; Eik-Nes, Sturla. (2017) Quantitative Doppler analysis using color flow imaging and adaptive signal processing. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Wigen, Morten Smedsrud; Rodriguez-Molares, Alfonso; Bjåstad, Tore Grüner; Eriksen, Marius; Stensæth, KNUT HAAKON; Løvstakken, Lasse. (2017) In-vivo 3D cardiac vector flow imaging - A comparison between ultrasound and phase-contrast MRI. Proceedings - IEEE Ultrasonics Symposium
Conference abstract
Østvik, Andreas; Smistad, Erik; Aase, Svein Arne; Haugen, Bjørn Olav; Løvstakken, Lasse. (2017) Real-time classification of standard cardiac views in echocardiography using neural networks. Proceedings - IEEE Ultrasonics Symposium
Conference abstract
Fadnes, Solveig; Wigen, Morten Smedsrud; Nyrnes, Siri Ann; Løvstakken, Lasse. (2017) In vivo intracardiac vector flow imaging using phased array transducers for pediatric cardiology. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Rodriguez-Molares, Alfonso; Torp, Hans; Lippe, Boris; Løvstakken, Lasse. (2017) Sequential CPWC: from ultrafast to ultralight. Proceedings of SPIE, the International Society for Optical Engineering
Academic article
Smistad, Erik; Østvik, Andreas; Haugen, Bjørn Olav; Løvstakken, Lasse. (2017) 2D left ventricle segmentation using deep learning. Proceedings - IEEE Ultrasonics Symposium
Academic article
Rodriguez-Molares, Alfonso; Fatemi, Ali; Løvstakken, Lasse; Torp, Hans. (2017) Specular Beamforming. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Mawad, Wadi; Løvstakken, Lasse; Fadnes, Solveig; Mertens, Luc; Nyrnes, Siri Ann. (2017) Right ventricular flow dynamics in dilated right ventricles. Energy loss estimation based on blood speckle tracking echocardiography in children. Journal of the American Society of Echocardiography
Conference abstract
Avdal, Jørgen; Løvstakken, Lasse; Torp, Hans; Ekroll, Ingvild Kinn. (2017) Combined 2-D Vector imaging and Tracking Doppler for improved vascular blood velocity quantification. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Rodriguez-Molares, Alfonso; Rindal, Ole Marius Hoel; Bernard, Olivier; Nair, Arun; Bell, Muyinatu A. Lediju; Liebgott, Herve; Austeng, Andreas; Løvstakken, Lasse. (2017) The UltraSound ToolBox. Proceedings - IEEE Ultrasonics Symposium
Academic article
Salles, Sebastien; Rodriguez-Molares, Alfonso; Støylen, Asbjørn; Bjåstad, Tore Grüner; Aase, Svein Arne; Løvstakken, Lasse; Torp, Hans. (2017) 3D myocardial mechanical wave measurements using high frame rate ultrasound imaging and Clutter filter wave imaging: Towards a 3D myocardial elasticity mapping. Proceedings - IEEE Ultrasonics Symposium
Conference abstract

2016

Karabiyik, Yucel; Avdal, Jørgen; Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2016) Data adaptive 2-D tracking Doppler. Proceedings - IEEE Ultrasonics Symposium
Academic article
Cauwenberge, Joris Van; Løvstakken, Lasse; Fadnes, Solveig; Rodriguez-Molares, Alfonso; Vierendeels, Jan; Segers, Patrick; Swillens, Abigail. (2016) Assessing the Performance of Ultrafast Vector Flow Imaging in the Neonatal Heart via Multiphysics Modeling and in Vitro Experiments. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Fadnes, Solveig; Nyrnes, Siri Ann; Wigen, Morten Smedsrud; Tegnander, Eva; Løvstakken, Lasse. (2016) Detailed flow visualization in fetal and neonatal hearts using 2-D speckle tracking. Proceedings - IEEE Ultrasonics Symposium
Academic article
Grønli, Thomas; Smistad, Erik; Nyrnes, Siri Ann; Gomez, Alberto; Løvstakken, Lasse. (2016) Reconstruction of In Vivo Flow Velocity Fields Based On a Rapid Ultrasound Image Segmentation and B-spline Regularization Framework. Proceedings - IEEE Ultrasonics Symposium
Academic article
Karabiyik, Yucel; Ekroll, Ingvild Kinn; Eik-Nes, Sturla; Avdal, Jørgen; Løvstakken, Lasse. (2016) Adaptive Spectral Estimation Methods in Color Flow Imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Santos, Pedro; Haugen, Geir Ultveit; Løvstakken, Lasse; Samset, Eigil; D'Hooge, Jan. (2016) High frame rate 3D tissue velocity imaging using sub-aperture beamforming: A pilot study in vivo. Proceedings - IEEE Ultrasonics Symposium
Academic article
Ekroll, Ingvild Kinn; Avdal, Jørgen; Swillens, Abigail Emily; Torp, Hans; Løvstakken, Lasse. (2016) An Extended Least Squares Method for Aliasing-Resistant Vector Velocity Estimation. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Rimehaug, Audun Eskeland; Skogvoll, Eirik; Aadahl, Petter; Lyng, Oddveig; Nordhaug, Dag Ole; Løvstakken, Lasse; Kirkeby-Garstad, Idar. (2016) Minimally invasive beat-by-beat monitoring of cardiac power in normal hearts and during acute ventricular dysfunction. Physiological Reports
Academic article
Rodriguez-Molares, Alfonso; Fatemi, Seyed Ali Mohammad; Torp, Hans; Løvstakken, Lasse. (2016) Adaptive beamforming based on Snell's law of reflection. Proceedings - IEEE Ultrasonics Symposium
Academic article
Rodriguez-Molares, Alfonso; Avdal, Jørgen; Torp, Hans; Løvstakken, Lasse. (2016) Axial lobes in coherent plane-wave compounding. Proceedings - IEEE Ultrasonics Symposium
Academic article
Wigen, Morten Smedsrud; Løvstakken, Lasse. (2016) In vivo three-dimensional intra-cardiac vector flow imaging using a 2D matrix array transducer. Proceedings - IEEE Ultrasonics Symposium
Academic article
Santos, Pedro; Haugen, Geir Ultveit; Løvstakken, Lasse; Samset, Eigil; D'Hooge, Jan R M. (2016) Diverging Wave Volumetric Imaging Using Subaperture Beamforming. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Høgenes, Jakob; Wigen, Morten Smedsrud; Nyrnes, Siri Ann; Segers, P.; Swillens, Abigail; Løvstakken, Lasse. (2016) Model-based estimation of intra-cardiac blood flow velocities using an unscented Kalman filter. Proceedings - IEEE Ultrasonics Symposium
Academic article
Smistad, Erik; Løvstakken, Lasse. (2016) Vessel detection in ultrasound images using deep convolutional neural networks. Lecture Notes in Computer Science (LNCS)
Academic article
Avdal, Jørgen; Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans. (2016) Combined 2-D vector and tracking Doppler imaging for improved blood velocity quantification. Proceedings - IEEE Ultrasonics Symposium
Academic article

2015

Fadnes, Solveig; Bjærum, Steinar; Torp, Hans; Løvstakken, Lasse. (2015) Clutter filtering influence on blood velocity estimation using speckle tracking. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Fadnes, Solveig; Ekroll, Ingvild Kinn; Nyrnes, Siri Ann; Torp, Hans; Løvstakken, Lasse. (2015) Robust angle-independent blood velocity estimation based on dual-angle plane wave imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Ekroll, Ingvild Kinn; Voormolen, Marco Marien; Standal, Øyvind Krøvel-Velle; Rau, Jochen; Løvstakken, Lasse. (2015) Coherent compounding in doppler imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Rodriguez-Molares, Alfonso; Løvstakken, Lasse; Torp, Hans; Martin-Herrero, Julio; Bjåstad, Tore Grüner. (2015) Detection of the Intima-Lumen interface by coherent combination of RF scanlines. Proceedings - IEEE Ultrasonics Symposium
Academic article
Rodriguez-Molares, Alfonso; Torp, Hans; Denarie, Bastien; Løvstakken, Lasse. (2015) The angular apodization in coherent plane-wave compounding. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Torp, Hans; Rodriguez-Molares, Alfonso; Løvstakken, Lasse. (2015) Optimum beamformer strategy for detecting signals in clutter noise. Proceedings - IEEE Ultrasonics Symposium
Academic article
Rodriguez-Molares, Alfonso; Løvstakken, Lasse; Ekroll, Ingvild Kinn; Torp, Hans. (2015) Needle detection by image source localization. Proceedings - IEEE Ultrasonics Symposium
Academic article
Rodriguez-Molares, Alfonso; Løvstakken, Lasse; Ekroll, Ingvild Kinn; Torp, Hans. (2015) Reconstruction of specular reflectors by iterative image source localization. Journal of the Acoustical Society of America
Academic article
Santos, Pedro; Tong, Ling; Ortega, Alejandra; Løvstakken, Lasse; Samset, Eigil; D'Hooge, Jan R M. (2015) Acoustic output of multi-line transmit beamforming for fast cardiac imaging: A simulation study. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2015) Improved quality of freehand 3-D ultrasound color flow imaging by multi-angle compounding. Proceedings - IEEE Ultrasonics Symposium
Academic article
Avdal, Jørgen; Løvstakken, Lasse; Torp, Hans. (2015) Effects of reverberations and clutter filtering in pulsed Doppler using sparse sequences. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse. (2015) Flow speckle tracking provides new information of complex blood flow in congenital heart disease. Cardiology in the Young
Conference abstract

2014

Fredriksen, Tonje Dobrowen; Avdal, Jørgen; Ekroll, Ingvild Kinn; Dahl, Torbjørn; Løvstakken, Lasse; Torp, Hans. (2014) Investigations of spectral resolution and angle dependency in a 2-D tracking doppler method. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Iversen, Daniel Høyer; Løvstakken, Lasse; Lindseth, Frank; Torp, Hans. (2014) Improved Methods for Navigated 3-D Vascular Ultrasound Imaging. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Fadnes, Solveig; Nyrnes, Siri Ann; Torp, Hans; Løvstakken, Lasse. (2014) Shunt flow evaluation in congenital heart disease based on two-dimensional speckle tracking. Ultrasound in Medicine and Biology
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2014) New ultrasound flow modalities for evaluation of congenital heart defects. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Ekroll, Ingvild Kinn; Dahl, Torbjørn; Torp, Hans; Løvstakken, Lasse. (2014) Combined vector velocity and spectral doppler imaging for improved imaging of complex blood flow in the carotid arteries. Ultrasound in Medicine and Biology
Academic article
Santos, Pedro; Tong, Ling; Ortega, Alejandra; Løvstakken, Lasse; Samset, Eigil; D'Hooge, Jan R M. (2014) Safety of Multi-Line Transmit beam forming for fast cardiac imaging - A simulation study. IEEE International Ultrasonics Symposium Proceedings
Academic article
Swillens, Abigail; Shcherbakova, Darya; Trachet, Bram; Segers, Patrick; Ekroll, Ingvild Kinn; Løvstakken, Lasse. (2014) A multi-angle plane wave imaging approach for high frequency 2D flow visualization in small animals: Simulation study in the murine arterial system. IEEE International Ultrasonics Symposium Proceedings
Academic article
Angelelli, Paolo; Snare, Sten Roar; Nyrnes, Siri Ann; Bruckner, Stefan; Hauser, Helwig; Løvstakken, Lasse. (2014) Live ultrasound-based particle visualization of blood flow in the heart. Spring conference on Computer graphics
Academic article
Kiss, Gabriel; Iversen, Daniel Høyer; Standal, Øyvind Krøvel-Velle; Rau, Jochen; Torp, Hans; Løvstakken, Lasse; Måsøy, Svein-Erik. (2014) A visualization tool for improved assessment and follow-up with ultrasound. IEEE International Ultrasonics Symposium Proceedings
Academic article
Avdal, Jørgen; Ekroll, Ingvild Kinn; Fadnes, Solveig; Løvstakken, Lasse; Torp, Hans. (2014) 2D tracking doppler for cardiac jet flow velocity estimation. IEEE International Ultrasonics Symposium Proceedings
Academic article
Ekroll, Ingvild Kinn; Voormolen, Marco Marien; Standal, Øyvind Krøvel-Velle; Rau, Jochen; Løvstakken, Lasse. (2014) On the accuracy of coherent compounding Doppler imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Døhlen, Gaute; Skogvoll, Eirik; Torp, Hans; Skjærpe, Terje; Norgård, Gunnar; Samstad, Stein; Graven, Torbjørn; Haugen, Bjørn Olav. (2014) Blood Flow Imaging in Transesophageal Echocardiography during Atrial Septal Defect Closure: A Comparison with the Current References. Echocardiography
Academic article
Fadnes, Solveig; Ekroll, Ingvild Kinn; Nyrnes, Siri Ann; Torp, Hans; Løvstakken, Lasse. (2014) Robust angle-independent blood velocity estimation based on multi-angle speckle tracking and vector Doppler. IEEE International Ultrasonics Symposium Proceedings
Academic article
Fadnes, Solveig; Løvstakken, Lasse. (2014) Two-Dimensional Blood Velocity Estimation for Intracardiac Flow Assessment. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis

2013

Nyrnes, Siri Ann; Løvstakken, Lasse; Døhlen, Gaute; Skogvoll, Eirik; Torp, Hans; Skjærpe, Terje; Norgård, Gunnar; Samstad, Stein; Graven, Torbjørn; Haugen, Bjørn Olav. (2013) Transesophageal echocardiography with Blood Flow Imaging during Atrial Septal defect closure: A comparison with the current references. Cardiology in the Young
Conference abstract
Fredriksen, Tonje Dobrowen; Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans. (2013) 2-D Tracking Doppler: A New Method to Limit Spectral Broadening in Pulsed Wave Doppler. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Denarie, Bastien; Tangen, Thor Andreas; Ekroll, Ingvild Kinn; Rolim, Natale Pinheiro Lage; Torp, Hans; Bjåstad, Tore; Løvstakken, Lasse. (2013) Coherent Plane Wave Compounding for Very High Frame Rate Ultrasonography of Rapidly Moving Targets. IEEE Transactions on Medical Imaging
Academic article
Ekroll, Ingvild Kinn; Swillens, Abigail; Segers, Patrick; Dahl, Torbjørn; Torp, Hans; Løvstakken, Lasse. (2013) Simultaneous Quantification of Flow and Tissue Velocities Based on Multi-Angle Plane Wave Imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Rimehaug, Audun Eskeland; Lyng, Oddveig; Nordhaug, Dag Ole; Løvstakken, Lasse; Aadahl, Petter; Kirkeby-Garstad, Idar. (2013) Cardiac power integral: a new method for monitoring cardiovascular performance. Physiological Reports
Academic article
Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2013) Model-Based Correction of Velocity Measurements in Navigated 3-D Ultrasound Imaging During Neurosurgical Interventions. IEEE Transactions on Medical Imaging
Academic article

2012

Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2012) Spectral Doppler Estimation Utilizing 2-D Spatial Information and Adaptive Signal Processing. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse. (2012) Raskere og sikrere diagnose. Hjertebarnet
Professional article
Swillens, Abigail; Witte, Marloes De; Nordgaard, Håvard B.; Løvstakken, Lasse; Loo, D. Van; Trachet, Bram; Vierendeels, Jan; Segers, Patrick. (2012) Effect of the degree of LAD stenosis on "competitive flow" and flow field characteristics in LIMA-to-LAD bypass surgery. Medical and Biological Engineering and Computing
Academic article
Løvstakken, Lasse; Nyrnes, Siri Ann; Haugen, Bjørn Olav; Torp, Hans. (2012) Angle-independent quantification of complex flow patterns in congenital heart disease. IEEE International Ultrasonics Symposium Proceedings
Academic article
Canneyt, K. Van; Swillens, Abigail; Løvstakken, Lasse; Antiga, L; Verdonck, P.; Segers, Patrick. (2012) The accuracy of ultrasound volume flow measurements in the complex flow setting of a forearm vascular access. Journal of Vascular Access
Academic article
Fredriksen, Tonje Dobrowen; Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans. (2012) 2D Tracking Doppler: A New Method to Limit Spectral Broadening in Pulsed Wave Doppler. Proceedings - IEEE Ultrasonics Symposium
Academic article
Ekroll, Ingvild Kinn; Dahl, Torbjørn; Torp, Hans; Løvstakken, Lasse. (2012) In vivo Vector Flow Imaing With Retrospective Pulsed Wave Doppler. Proceedings - IEEE Ultrasonics Symposium
Academic article
Fadnes, Solveig; Nyrnes, Siri Ann; Swillens, Abigail; Torp, Hans; Løvstakken, Lasse. (2012) Shunt quantification in congenital heart disease based on two-dimensional speckle tracking. Proceedings - IEEE Ultrasonics Symposium
Academic article
Iversen, Daniel Høyer; Lindseth, Frank; Torp, Hans; Løvstakken, Lasse. (2012) Model-based correction of angle-dependencies in navigated 3-D flow imaging during neurosurgical interventions. IEEE International Ultrasonics Symposium Proceedings
Conference abstract
Swillens, Abigail Emily; Santis, G. De; Degroote, Joris; Løvstakken, Lasse; Vierendeels, Jan; Segers, Patrick. (2012) Accuracy of carotid strain estimates from ultrasonic wall tracking: a study based on multiphysics simulations and in vivo data. IEEE Transactions on Medical Imaging
Academic article
Iversen, Daniel Høyer; Lindseth, Frank; Torp, Hans; Løvstakken, Lasse. (2012) Improved 3-D reconstruction of vascular flow based on plane wave imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article

2011

Swillens, Abigail Emily; Segers, Patrick; Løvstakken, Lasse. (2011) A combined speckle tracking and phase-shift estimation approach for 2D blood flow imaging in the carotid bifurcation. IEEE International Ultrasonics Symposium Proceedings
Academic article
Swillens, Abigail Emily; Segers, Patrick; Groote, Joris De; Vierendeels, Jan; Løvstakken, Lasse. (2011) Improving ultrasonic imaging of the vascular wall and blood flow using a multiphysics simulation tool integrating fluid-structure interaction and ultrasound simulations. IEEE International Ultrasonics Symposium Proceedings
Academic article
Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2011) Model-based correction of angle-dependencies in navigated3-D flow imaging during neurosurgical interventions. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2011) Change in left ventricular vortex flow before and after surgery for coarctation of the aorta in an infant shown with plane wave imaging and flow speckle tracking. Cardiology in the Young
Conference abstract
Alnes, Solveig Søvik; Swillens, Abigail; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2011) Clutter filtering issues in speckle tracking for two-dimensional blood velocity estimation - a potential solution based on compounded imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article
Swillens, Abigail Emily; Santis, G. De; Degroote, Joris; Løvstakken, Lasse; Vierendeels, Jan; Segers, Patrick. (2011) Strain estimation in the carotid artery from ultrasonic wall tracking: a multiphysics model study. IEEE International Ultrasonics Symposium Proceedings
Academic article
Swillens, Abigail Emily; Santis, G. De; Degroote, Joris; Løvstakken, Lasse; Vierendeels, Jan; Segers, Patrick. (2011) Multiphysics modeling in support of ultrasonic image development: integration of fluid-structure interaction simulations and Field II applied to the carotid artery. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2011) Flow speckle tracking for detailed visualization of flow patterns in neonates with congenital heart defects. European Heart Journal-Cardiovascular Imaging
Conference abstract

2010

Yu, Alfred C. H.; Løvstakken, Lasse. (2010) Eigen-Based Clutter Filter Design for Ultrasound Color Flow Imaging: A Review. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Nordgaard, Håvard B.; Swillens, Abigail; Nordhaug, Dag Ole; Kirkeby-Garstad, Idar; Loo, D. Van; Vitale, Nicola; Segers, Patrick; Haaverstad, Rune; Løvstakken, Lasse. (2010) Impact of competitive flow on wall shear stress in coronary surgery: computational fluid dynamics of a LIMA-LAD model. Cardiovascular Research (CVR)
Academic article
Swillens, Abigail Emily; Segers, Patrick; Løvstakken, Lasse. (2010) Two-dimensional flow imaging in the carotid bifurcation using a combined speckle tracking and phase-shift estimator: a study based on ultrasound simulations and in vivo analysis. Ultrasound in Medicine and Biology
Academic article
Solheim, Ole; Selbekk, Tormod; Løvstakken, Lasse; Tangen, Geir Arne; Solberg, Ole Vegard; Johansen, Tonni Franke; Cappelen, Johan; Unsgård, Geirmund. (2010) Intrasellar ultrasound in transsphenoidal surgery: a novel technique. Neurosurgery
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2010) Does a new ultrasound flow modality improve visualization of neonatal pulmonary veins?. Hjerteforum
Conference abstract
Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2010) Retrospective PW-Doppler based on spatiotemporal adaptive signal processing. IEEE International Ultrasonics Symposium Proceedings
Academic article
Swillens, Abigail Emily; Degroote, J.; Vierendeels, Jan; Løvstakken, Lasse; Segers, Patrick. (2010) A simulation environment for validating ultrasonic blood flow and vessel wall imaging based on fluid-structure interaction simulations: ultrasonic assessment of arterial distension and wall shear rate. Medical Physics
Academic article
Løvstakken, Lasse; Torp, Hans. (2010) Extended Velocity Range in Color Flow Imaging using Parallel Receive Beamforming. IEEE International Ultrasonics Symposium Proceedings
Academic article
Hergum, Torbjørn; Bjåstad, Tore Grüner; Løvstakken, Lasse; Kristoffersen, Kjell; Torp, Hans. (2010) Reducing Color Flow Artifacts caused by Parallel Beamforming. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Swillens, Abigail Emily; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2010) Two-dimensional blood velocity estimation with ultrasound: speckle tracking versus crossed-beam vector Doppler based on flow simulations in a carotid bifurcation model. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2010) Does a new ultrasound flow modality improve visualization of neonatal pulmonary veins?. Echocardiography
Academic article

2009

Lindseth, Frank; Løvstakken, Lasse; Rygh, Ola Morten; Tangen, Geir Arne; Torp, Hans; Unsgaard, Geirmund. (2009) Blood Flow Imaging: An Angle-Independent Ultrasound Modality for Intraoperative Assessment of Flow Dynamics in Neurovascular Surgery. Neurosurgery
Academic article
Nordgaard, Håvard; Nordhaug, Dag; Kirkeby-Garstad, Idar; Løvstakken, Lasse; Vitale, Nicola; Haaverstad, Rune. (2009) Different graft flow patterns due to competitive flow or stenosis in the coronary anastomosis assessed by transit-time flowmetry in a porcine model. European Journal of Cardio-Thoracic Surgery
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans. (2009) Plane wave imaging for high frame rate flow visualisation in neonates with congenital heart disease. European Heart Journal-Cardiovascular Imaging
Conference abstract
Frijlink, Martijn Egbert; Løvstakken, Lasse; Torp, Hans. (2009) Investigation of transmit and receive performance at the fundamental and third harmonic resonance frequency of a medical ultrasound transducer. Ultrasonics
Academic article
Swillens, Abigail; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2009) Two-dimensional flow velocity estimation in the carotid bifurcation: a study of crossed-beam vector Doppler and speckle tracking using computational fluid dynamics. IEEE International Ultrasonics Symposium Proceedings
Academic article
Løvstakken, Lasse; Møllerløkken, Andreas; Måsøy, Svein-Erik. (2009) Current trends in ultrasound imaging technology, SURF imaging, and decompression induced microbubbles.
Academic chapter
Swillens, A; Løvstakken, Lasse; Kips, J; Torp, Hans; Segers, P. (2009) Ultrasound Simulation of Complex Flow Velocity Fields Based on Computational Fluid Dynamics. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Swillens, A; Schryver, T De; Løvstakken, Lasse; Torp, Hans; Segers, P. (2009) Assessment of Numerical Simulation Strategies for Ultrasonic Color Blood Flow Imaging, Based on a Computer and Experimental Model of the Carotid Artery. Annals of Biomedical Engineering
Academic article

2008

Frijlink, Martijn Egbert; Løvstakken, Lasse; Torp, Hans. (2008) Fundamental and Third Harmonic Operation of a Medical Phased Array Transducer. IEEE International Ultrasonics Symposium Proceedings
Academic article
Oddershede, Niels; Løvstakken, Lasse; Torp, Hans; Jensen, Jørgen A.. (2008) Estimating 2-D vector velocities using multidimensional spectrum analysis. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Swillens, Abigail; Løvstakken, Lasse; Torp, Hans; Segers, Patrick. (2008) A comparison of multidimensional flow estimation techniques using computational fluid dynamics: speckle tracking versus vector Doppler. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse. (2008) Ny ultralydmetode gir bedre blodstrømsbilder. Dagens medisin
Professional article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2008) The coronary arteries visualised by a new ultrasound flow modality. European Heart Journal-Cardiovascular Imaging
Conference abstract
Løvstakken, Lasse; Ibrahim, Khalid Shaker Oklah; Vitale, Nicola; Henriksen, Siren T.; Kirkeby-Garstad, Idar; Torp, Hans; Haaverstad, Rune. (2008) Blood Flow Imaging: A New Two-dimensional Ultrasound Modality for Enhanced Intraoperative Visualization of Blood Flow Patterns in Coronary Anastomoses. Journal of the American Society of Echocardiography
Academic article

2007

Løvstakken, Lasse; Yu, Alfred C. H.; Torp, Hans. (2007) P6B-3 In Vivo Investigation of Filter order Influence in Eigen-based Clutter Filtering for Color Flow Imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article
Yu, Alfred C. H.; Løvstakken, Lasse. (2007) Eigen-Based Clutter Filters for Color Flow Imaging: Single-Ensemble vs. Multi-Ensemble Approaches. IEEE International Ultrasonics Symposium Proceedings
Academic article
Oddershede, Niels; Løvstakken, Lasse; Torp, Hans; Jensen, Jørgen A.. (2007) Multi-dimensional spectrum analysis for 2-D vector velocity estimation. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2007) A new ultrasound modality to visualise atrial septal defect flow in children. European Heart Journal-Cardiovascular Imaging
Conference abstract
Løvstakken, Lasse; Orderud, Fredrik; Torp, Hans. (2007) Real-time Indication of Acoustic Window for Phased-Array Transducers in Ultrasound Imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2007) Blood Flow Imaging - A New Angle-Independent Ultrasound Modality for the Visualization of Flow in Atrial Septal Defects in Children. Echocardiography
Academic article
Løvstakken, Lasse. (2007) Signal processing in diagnostic ultrasound: Algorithms for real-time estimation and visualization of blood flow velocity. NTNU, Det medisinske fakultet
Doctoral thesis
Løvstakken, Lasse; Bjærum, Steinar; Torp, Hans. (2007) Optimal velocity estimation in ultrasound Color Flow Imaging in presence of clutter. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Khalid, Ibrahim; Løvstakken, Lasse; Kirkeby-Garstad, Idar; Torp, Hans; Vik-Mo, Harald; Haaverstad, Rune. (2007) Effect of the Cardiac Cycle on the Coronary Anastomosis Assessed by Ultrasound. Asian Cardiovascular and Thoracic Annals
Academic article

2006

Løvstakken, Lasse; Bjærum, Steinar; Kristoffersen, K; Haaverstad, Rune; Torp, Hans. (2006) Real-time adaptive clutter rejection filtering in color flow imaging using power method iterations. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Løvstakken, Lasse; Bjærum, Steinar; Martens, Ditlef; Torp, Hans. (2006) Blood flow imaging - A new real-time, 2-D flow imaging technique. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Løvstakken, Lasse; Tangen, Thor Andreas; Bjærum, Steinar; Torp, Hans. (2006) Optimal velocity estimation in ultrasound Color Flow Imaging in presence of clutter noise. IEEE International Ultrasonics Symposium Proceedings
Academic article

Journal publications

Tveten, Ingrid Elisabeth; Nyberg, John; Grue, Jahn Frederik; Helland, Ragnhild Holden; Melichova, Daniela; Nguyen, Thuy Mi; Brunvand, Harald; Edvardsen, Thor; Haugaa, Kristina Ingrid Helena Hermann; Dalen, Håvard. (2026) Deep learning segmentation and quantification of the left ventricle from the parasternal short axis view. European Heart Journal-Cardiovascular Imaging
Conference abstract
Dukefoss, Henrik B.; Andresen, Kristoffer; Harbo, Markus Borge; Hasselberg, Nina Eide; Grødem, Herman; Korsæth, Truls; Romundstad, Henrik; Moe, Kjell Kristoffer W.; Løvstakken, Lasse; Gude, Einar. (2026) Validation of shear wave elastography for assessing myocardial fibrosis in patients with end-stage heart failure. European Heart Journal-Cardiovascular Imaging
Academic article
Azad, Md Abulkalam; Nyberg, John; Dalen, Håvard; Grenne, Bjørnar Leangen; Løvstakken, Lasse; Østvik, Andreas. (2025) Taming Modern Point Tracking for Speckle Tracking Echocardiography via Impartial Motion. IEEE International Conference on Computer Vision Workshop (ICCVW)
Conference abstract
Woelfert, Ada; Dale, Ane Cecilie; Mjølstad, Ole Christian; Løvstakken, Lasse; Dalen, Håvard; Østvik, Andreas; Grenne, Bjørnar Leangen. (2024) The importance of heart rate on left ventricular global longitudinal strain in echocardiography: novel insights facilitated by automated deep learning methods. European Heart Journal
Conference abstract
Woelfert, Ada; Mjølstad, Ole Christian; Dale, Ane Cecilie; Salvesen, Øyvind Olav; Lovstakken, Lasse; Dalen, Håvard; Østvik, Andreas; Grenne, Bjørnar Leangen. (2025) The impact of heart rate on echocardiographic measures of left ventricular function: Novel insights facilitated by deep learning. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Chernyshov, Artem; Nyberg, John Anders Tomas; Holmstrøm, Vegard; Azad, Md Abulkalam; Grenne, Bjørnar Leangen; Dalen, Håvard; Aase, Svein Arne; Løvstakken, Lasse; Østvik, Andreas. (2025) Low Complexity Point Tracking of the Myocardium in 2D Echocardiography. IEEE Access
Academic article
Kjelsrud, Anders; Løvstakken, Lasse; Smistad, Erik; Dalen, Håvard; van de Vyver, Gilles. (2025) Lightweight image segmentation for echocardiography. Proceedings - IEEE Ultrasonics Symposium
Academic article
van de Vyver, Gilles; Lenz, Aksel Try; Smistad, Erik; Olaisen, Sindre Hellum; Grenne, Bjørnar Leangen; Holte, Espen; Dalen, Håvard; Løvstakken, Lasse. (2025) Generative augmentations for improved cardiac ultrasound segmentation using diffusion models. Scientific Reports
Academic article
Tveten, Ingrid Elisabeth; Nyberg, John; Grue, Jahn Frederik; Helland, Ragnhild Holden; Melichova, Daniela; Nguyen, Thuy Mi; Brunvand, Harald; Edvardsen, Thor; Haugaa, Kristina Ingrid Helena Hermann; Dalen, Håvard. (2025) Deep Learning Segmentation and Quantification of the Left Ventricle from the Parasternal Short-Axis View in Echocardiography. Ultrasound in Medicine and Biology
Academic article
Pettersen, Håkon; Sæbø, Sigbjørn; Pasdeloup, David; Smistad, Erik; Olaisen, Sindre Hellum; Østvik, Andreas; Stølen, Stian Bergseng; Grenne, Bjørnar Leangen; Løvstakken, Lasse; Dalen, Havard. (2025) Real-time deep learning-based image guiding and automated left ventricular measurements to reduce test-retest variability. Open heart
Academic article
Witsø, Marit Helene Langset; Luo, H; Holm, T; Kristiansen, H M; Frostelid, V C; Aalen, J; Sørensen, Kristian; Fadnes, Solveig; Nyrnes, Siri Ann; Løvstakken, Lasse. (2025) Feasibility of non-invasive echocardiographic estimates of intraventricular pressure differences by blood speckle tracking in adults. European Heart Journal-Cardiovascular Imaging
Conference abstract
Holmstrøm, Vegard; Smistad, Erik; Østvik, Andreas; Holte, Espen; Stølen, Stian Bergseng; Løvstakken, Lasse; Dalen, Håvard; Grenne, Bjørnar Leangen. (2025) Deep learning in echocardiography: real-time measurements of left ventricular wall thickness and chamber dimensions in the parasternal long-axis view. European Heart Journal-Cardiovascular Imaging
Academic article
Melichova, Daniela; Nyberg, John; Nguyen, Thuy Mi; Salte, Ivar Mjåland; Brunvand, Harald; Haugaa, Kristina Ingrid Helena Hermann; Edvardsen, Thor; Dalen, Håvard; Løvstakken, Lasse; Østvik, Andreas. (2025) Clinical validation of a novel fully automated measurement method for echocardiographic mechanical dispersion using deep learning. European Heart Journal-Cardiovascular Imaging
Academic article
Holmstrøm, Vegard; Smistad, Erik; Grue, Jahn Frederik; Løvstakken, Lasse; Stølen, Stian Bergseng; Dalen, Håvard; Østvik, Andreas; Holte, Espen; Grenne, Bjørnar Leangen. (2025) Deep learning in echocardiography: Fully automated B-mode MAPSE measurements in real-time. European Heart Journal-Cardiovascular Imaging
Academic article
Pasdeloup, David; Østvik, Andreas; Smistad, Erik; Nyberg, John; Jakobsen, Even Olav; Grenne, Bjørnar Leangen; Holte, Espen; Løvstakken, Lasse; Dalen, Håvard. (2025) Effect of apical foreshortening and transducer angulation on strain measurements: a quantitative investigation. European Heart Journal-Cardiovascular Imaging
Conference abstract
Hu, Jieyu; Olaisen, Sindre Hellum; Pasdeloup, David; van de Vyver, Gilles; Østvik, Andreas; Holte, Espen; Grenne, Bjørnar Leangen; Dalen, Håvard; Lovstakken, Lasse. (2025) A deep learning-based pipeline for large-scale echocardiography data curation and measurements. The European Heart Journal – Digital Health (EHJ-DH)
Academic article
Halvorsrød, Marlene Iversen; Mohajery, Mohammad; Espeland, Torvald; Salles, Sebastien Andre Roger; Støylen, Asbjørn; Løvstakken, Lasse; Grenne, Bjørnar Leangen. (2025) Mechanical wave velocities in acute myocardial infarction: an exploratory study using three-dimensional high frame rate echocardiography. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Grenne, Bjørnar Leangen; Østvik, Andreas; Dalen, Håvard; Løvstakken, Lasse. (2025) One strain to rule them all? Inter-vendor variability in global longitudinal strain—progress made, challenges remain. European Heart Journal-Cardiovascular Imaging
Editorial
Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Bøen, Gunn Catrin Fossum; Jakobsen, Even Olav; Langøy, Per Kristian Fahle; Nilsen, Hans Olav; Pasdeloup, David; Smistad, Erik; Østvik, Andreas; Løvstakken, Lasse. (2025) Real-time guidance and automated measurements using deep learning to improve echocardiographic assessment of left ventricular size and function. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Holmstrøm, Vegard; Smistad, Erik; Stølen, Stian Bergseng; Holte, Espen; Løvstakken, Lasse; Dalen, Håvard; Østvik, Andreas; Grenne, Bjørnar Leangen. (2025) Real-Time Global Longitudinal Strain During Echocardiography: A Deep Learning Platform for Improved Workflow. Journal of the American Society of Echocardiography
Academic article
Pasdeloup, David; Østvik, Andreas; Olaisen, Sindre Hellum; Skogvoll, Eirik; Dalen, Havard; Løvstakken, Lasse. (2025) Challenges and Strategies for Deep Learning in Cardiovascular Imaging. JACC Cardiovascular Imaging
Academic article
Sivaraj, Eswar; Løvstakken, Lasse; Corney, Raphaela; Fadnes, Solveig; Espeland, Torvald; Andresen, Kristoffer; Marwick, Thomas H.. (2025) Mechanical Wave Analysis at High Frame-Rate Echocardiography: Feasibility, Determinants and Normal Ranges. JACC Cardiovascular Imaging
Academic article
Smistad, Erik; Ãstvik, Andreas; LÃ¸vstakken, Lasse. (2021) Annotation Web - An open-source web-based annotation tool for ultrasound images. Proceedings - IEEE Ultrasonics Symposium
Academic article
Smistad, Erik; Salte, Ivar Mjåland; Dalen, Håvard; Lovstakken, Lasse. (2021) Real-time temporal coherent left ventricle segmentation using convolutional LSTMs. Proceedings - IEEE Ultrasonics Symposium
Academic article
Smistad, Erik; Steinsland, Erik Nikolai; LÃ¸vstakken, Lasse. (2021) Real-time 3D left ventricle segmentation and ejection fraction using deep learning. Proceedings - IEEE Ultrasonics Symposium
Academic article
Lindseth, Frank; Løvstakken, Lasse; Rygh, Ola Morten; Tangen, Geir Arne; Torp, Hans; Unsgaard, Geirmund. (2009) Blood Flow Imaging: An Angle-Independent Ultrasound Modality for Intraoperative Assessment of Flow Dynamics in Neurovascular Surgery. Neurosurgery
Academic article
Yu, Alfred C. H.; Løvstakken, Lasse. (2010) Eigen-Based Clutter Filter Design for Ultrasound Color Flow Imaging: A Review. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Frijlink, Martijn Egbert; Løvstakken, Lasse; Torp, Hans. (2008) Fundamental and Third Harmonic Operation of a Medical Phased Array Transducer. IEEE International Ultrasonics Symposium Proceedings
Academic article
Sauvage, Jack; Moustefaoui, Safa; Fiorentini, Stefano; Venet, Maelys; Fadnes, Solveig; Løvstakken, Lasse; Villemain, Olivier; Salles, Sebastien Andre Roger. (2024) Detection of natural pulse waves (PWs) in 3D using high frame rate imaging for anisotropy characterization. Frontiers in Physics
Academic article
Smistad, Erik; Salte, Ivar Mjåland; Østvik, Andreas; Leclerc, Sarah; Bernard, Olivier; Løvstakken, Lasse. (2019) Segmentation of apical long axis, four- and two-chamber views using deep neural networks. Proceedings - IEEE Ultrasonics Symposium
Academic article
Leclerc, Sarah; Smistad, Erik; Grenier, Thomas; Lartizien, Carole; Østvik, Andreas; Cervenansky, Frederic; Espinosa, Florian; Espeland, Torvald; Berg, Erik Andreas Rye; Jodoin, Pierre-Marc. (2019) RU-Net: A refining segmentation network for 2D echocardiography. Proceedings - IEEE Ultrasonics Symposium
Academic article
Mohajery, Mohammad; Salles, Sebastien Andre Roger; Espeland, Torvald; Wigen, Morten Smedsrud; Fadnes, Solveig; Løvstakken, Lasse. (2024) The 3D Estimation of Mechanical Wave Velocities in the Heart: Methods and Insights. IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control Society (OJUFFC)
Academic article
Nordgaard, Håvard B.; Swillens, Abigail; Nordhaug, Dag Ole; Kirkeby-Garstad, Idar; Loo, D. Van; Vitale, Nicola; Segers, Patrick; Haaverstad, Rune; Løvstakken, Lasse. (2010) Impact of competitive flow on wall shear stress in coronary surgery: computational fluid dynamics of a LIMA-LAD model. Cardiovascular Research (CVR)
Academic article
van de Vyver, Gilles; Thomas, Sarina; Ben-Yosef, Guy; Olaisen, Sindre Hellum; Dalen, Håvard; Løvstakken, Lasse; Smistad, Erik. (2024) Toward Robust Cardiac Segmentation Using Graph Convolutional Networks. IEEE Access
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Døhlen, Gaute; Skogvoll, Eirik; Torp, Hans; Skjærpe, Terje; Norgård, Gunnar; Samstad, Stein; Graven, Torbjørn; Haugen, Bjørn Olav. (2013) Transesophageal echocardiography with Blood Flow Imaging during Atrial Septal defect closure: A comparison with the current references. Cardiology in the Young
Conference abstract
Swillens, Abigail Emily; Segers, Patrick; Løvstakken, Lasse. (2010) Two-dimensional flow imaging in the carotid bifurcation using a combined speckle tracking and phase-shift estimator: a study based on ultrasound simulations and in vivo analysis. Ultrasound in Medicine and Biology
Academic article
Fadnes, Solveig; Bjærum, Steinar; Torp, Hans; Løvstakken, Lasse. (2015) Clutter filtering influence on blood velocity estimation using speckle tracking. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2012) Spectral Doppler Estimation Utilizing 2-D Spatial Information and Adaptive Signal Processing. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Fadnes, Solveig; Tegnander, Eva; Nyrnes, Siri Ann; Løvstakken, Lasse. (2017) Vector Flow Imaging of Fetal Circulation using Diverging Waves. Proceedings - IEEE Ultrasonics Symposium
Conference abstract
Sørensen, Kristian; Fadnes, Solveig; Wigen, Morten Smedsrud; Salvesen, Øyvind; Mertens, Luc; Løvstakken, Lasse; Nyrnes, Siri Ann. (2020) Assessment of Diastolic Intraventricular Pressure Gradients in Children by Blood Speckle Tracking. A Feasibility Study. Journal of the American Society of Echocardiography
Conference abstract
Nordgaard, Håvard; Nordhaug, Dag; Kirkeby-Garstad, Idar; Løvstakken, Lasse; Vitale, Nicola; Haaverstad, Rune. (2009) Different graft flow patterns due to competitive flow or stenosis in the coronary anastomosis assessed by transit-time flowmetry in a porcine model. European Journal of Cardio-Thoracic Surgery
Academic article
Santos, Pedro; Løvstakken, Lasse; Samset, Eigil; D'Hooge, Jan. (2017) Volumetric imaging of fast mechanical waves in the heart using a clinical ultrasound system. Proceedings - IEEE Ultrasonics Symposium
Academic article
Smistad, Erik; Østvik, Andreas; Grue, Jahn Frederik; Dalen, Håvard; Løvstakken, Lasse. (2022) Tracking-based mitral annular plane systolic excursion (MAPSE) measurement using deep learning in B-mode ultrasound. Proceedings - IEEE Ultrasonics Symposium
Academic article
Ramalli, Alessandro; Rodriguez-Molares, Alfonso; Avdal, Jørgen; D'Hooge, Jan; Løvstakken, Lasse. (2019) High frame rate color flow echocardiography: A comparison of different imaging approaches. Journal of the Acoustical Society of America
Academic article
Fredriksen, Tonje Dobrowen; Avdal, Jørgen; Ekroll, Ingvild Kinn; Dahl, Torbjørn; Løvstakken, Lasse; Torp, Hans. (2014) Investigations of spectral resolution and angle dependency in a 2-D tracking doppler method. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Fadnes, Solveig; Ekroll, Ingvild Kinn; Nyrnes, Siri Ann; Torp, Hans; Løvstakken, Lasse. (2015) Robust angle-independent blood velocity estimation based on dual-angle plane wave imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Smistad, Erik; Dalen, Håvard; Grenne, Bjørnar; Løvstakken, Lasse. (2022) Segmentation of parasternal long axis views using deep learning. Proceedings - IEEE Ultrasonics Symposium
Academic article
Fredriksen, Tonje Dobrowen; Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans. (2013) 2-D Tracking Doppler: A New Method to Limit Spectral Broadening in Pulsed Wave Doppler. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Grønli, Thomas; Swillens, Abigail Emily; Segers, Patrick; Løvstakken, Lasse. (2017) Real-time assimilation and regularization of ultrasound blood velocity measurements using smoothed particle hydrodynamics. Proceedings - IEEE Ultrasonics Symposium
Conference abstract
Kvalevåg, Magnus; Vrålstad, Anders Emil; Rindal, Ole Marius Hoel; Bjåstad, Tore Grüner; Dénarié, Bastien; Kristoffersen, Kjell; Måsøy, Svein-Erik; Løvstakken, Lasse. (2023) vbeam: A Fast and Differentiable Beamformer for Optimizing Ultrasound Imaging. Proceedings - IEEE Ultrasonics Symposium
Academic article
Løvstakken, Lasse; Grenne, Bjørnar Leangen. (2024) The Road to Robust and Automated Strain Measurements in Echocardiography by Deep Learning. JACC Cardiovascular Imaging
Editorial
Østvik, Andreas; Smistad, Erik; Espeland, Torvald; Berg, Erik Andreas Rye; Løvstakken, Lasse. (2018) Automatic Myocardial Strain Imaging in Echocardiography Using Deep Learning. Lecture Notes in Computer Science (LNCS)
Academic article
Salte, Ivar Mjåland; Østvik, Andreas; Olaisen, Sindre Hellum; Karlsen, Sigve; Dahlslett, Thomas; Smistad, Erik; Eriksen-Volnes, Torfinn Kirknes; Brunvand, Harald; Haugaa, Kristina Ingrid Helena Hermann; Edvardsen, Thor. (2023) Deep Learning for Improved Precision and Reproducibility of Left Ventricular Strain in Echocardiography: A Test-Retest Study. Journal of the American Society of Echocardiography
Academic article
Nyberg, John; Jakobsen, Even Olav; Østvik, Andreas; Holte, Espen; Stølen, Stian Bergseng; Løvstakken, Lasse; Grenne, Bjørnar Leangen; Dalen, Håvard. (2023) Echocardiographic Reference Ranges of Global Longitudinal Strain for All Cardiac Chambers Using Guideline-Directed Dedicated Views. JACC Cardiovascular Imaging
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse. (2012) Raskere og sikrere diagnose. Hjertebarnet
Professional article
Garone, Rosa Virginia; Lønmo, Tor Inge Birkenes; Schimel, Alexandre; Diesing, Markus; Thorsnes, Terje; Løvstakken, Lasse. (2023) Seabed classification of multibeam echosounder data into bedrock/non-bedrock using deep learning. Frontiers in Earth Science
Academic article
Yari, Yasin; Næve, Ingun; Bergtun, Per Helge; Hammerdal, Asle; Måsøy, Svein-Erik; Voormolen, Marco Marien; Løvstakken, Lasse. (2024) Deep Learning for Automated Egg Maturation Prediction of Atlantic Salmon Using Ultrasound Imaging. IEEE Access
Academic article
Espeland, Torvald; Wigen, Morten Smedsrud; Dalen, Håvard; Berg, Erik Andreas Rye; Hammer, Tommy Arild; Salles, Sebastien Andre Roger; Løvstakken, Lasse; Amundsen, Brage H.; Aakhus, Svend. (2023) Mechanical Wave Velocities in Left Ventricular Walls in Healthy Subjects and Patients With Aortic Stenosis. JACC Cardiovascular Imaging
Academic article
Salles, Sebastien; Aase, Svein Arne; Bjåstad, Tore Grüner; Løvstakken, Lasse; Torp, Hans. (2017) Clutter filter wave imaging (CFWI): A new way to visualize and detect mechanical waves propagation. Proceedings - IEEE Ultrasonics Symposium
Conference abstract
Solheim, Ole; Selbekk, Tormod; Løvstakken, Lasse; Tangen, Geir Arne; Solberg, Ole Vegard; Johansen, Tonni Franke; Cappelen, Johan; Unsgård, Geirmund. (2010) Intrasellar ultrasound in transsphenoidal surgery: a novel technique. Neurosurgery
Academic article
Salte, Ivar Mjåland; Østvik, Andreas; Olaisen, Sindre Hellum; Karlsen, Sigve; Dahlslett, Thomas; Smistad, Erik; Eriksen-Volnes, Torfinn Kirknes; Brunvand, Harald; Haugaa, Kristina Ingrid Helena Hermann; Edvardsen, Thor. (2023) Response to “Minimal Detectable Change and Reproducibility of Echocardiographic Strain: Implications for Clinical Practice”. Journal of the American Society of Echocardiography
Commentary
Wigen, Morten Smedsrud; Rodriguez-Molares, Alfonso; Bjåstad, Tore Grüner; Eriksen, Marius; Stensæth, KNUT HAAKON; Løvstakken, Lasse. (2017) In-vivo 3D cardiac vector flow imaging - A comparison between ultrasound and phase-contrast MRI. Proceedings - IEEE Ultrasonics Symposium
Conference abstract
Viggen, Erlend Magnus; Merciu, Ioan Alexandru; Løvstakken, Lasse; Måsøy, Svein-Erik. (2020) Automatic interpretation of cement evaluation logs from cased boreholes using supervised deep neural networks. Journal of Petroleum Science and Engineering
Academic article
Swillens, Abigail Emily; Segers, Patrick; Løvstakken, Lasse. (2011) A combined speckle tracking and phase-shift estimation approach for 2D blood flow imaging in the carotid bifurcation. IEEE International Ultrasonics Symposium Proceedings
Academic article
Swillens, Abigail Emily; Segers, Patrick; Groote, Joris De; Vierendeels, Jan; Løvstakken, Lasse. (2011) Improving ultrasonic imaging of the vascular wall and blood flow using a multiphysics simulation tool integrating fluid-structure interaction and ultrasound simulations. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans. (2009) Plane wave imaging for high frame rate flow visualisation in neonates with congenital heart disease. European Heart Journal-Cardiovascular Imaging
Conference abstract
Swillens, Abigail; Witte, Marloes De; Nordgaard, Håvard B.; Løvstakken, Lasse; Loo, D. Van; Trachet, Bram; Vierendeels, Jan; Segers, Patrick. (2012) Effect of the degree of LAD stenosis on "competitive flow" and flow field characteristics in LIMA-to-LAD bypass surgery. Medical and Biological Engineering and Computing
Academic article
Fermann, Benjamin Strandli; Nyberg, John; Remme, Espen; Grue, Jahn Frederik; Grue, Helén; Håland, Roger; Løvstakken, Lasse; Dalen, Håvard; Grenne, Bjørnar Leangen; Aase, Svein Arne. (2024) Cardiac Valve Event Timing in Echocardiography Using Deep Learning and Triplane Recordings. IEEE Journal of Biomedical and Health Informatics
Academic article
Henry, Matthew; Fadnes, Solveig; Løvstakken, Lasse; Mawad, Wadi; Mertens, Luc; Nyrnes, Siri Ann. (2023) Flow Dynamics in Children With Bicuspid Aortic Valve: A Blood Speckle Tracking Study. Ultrasound in Medicine and Biology
Academic article
Grønli, Thomas; Wigen, Morten Smedsrud; Segers, Patrick; Løvstakken, Lasse. (2018) A fast 4D B-spline framework for model-based reconstruction and regularization in vector flow imaging. Proceedings - IEEE Ultrasonics Symposium
Academic article
Karabiyik, Yucel; Avdal, Jørgen; Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2016) Data adaptive 2-D tracking Doppler. Proceedings - IEEE Ultrasonics Symposium
Academic article
Smistad, Erik; Østvik, Andreas; Salte, Ivar Mjåland; Leclerc, Sarah; Bernard, Olivier; Løvstakken, Lasse. (2018) Fully automatic real-time ejection fraction and MAPSE measurements in 2D echocardiography using deep neural networks. Proceedings - IEEE Ultrasonics Symposium
Academic article
Oddershede, Niels; Løvstakken, Lasse; Torp, Hans; Jensen, Jørgen A.. (2008) Estimating 2-D vector velocities using multidimensional spectrum analysis. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Karabiyik, Yücel; Avdal, Jørgen; Ekroll, Ingvild Kinn; Fiorentini, Stefano; Torp, Hans; Løvstakken, Lasse. (2019) Data Adaptive 2-D Tracking Doppler for High-Resolution Spectral Estimation. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2010) Does a new ultrasound flow modality improve visualization of neonatal pulmonary veins?. Hjerteforum
Conference abstract
Nancy, Bazilchuk; Pasdeloup, David Francis Pierre; Dalen, Håvard; Løvstakken, Lasse; Måsøy, Svein-Erik. (2024) Peering into your heart – with the help of AI. Gemini (English edition)
Popular science article
Viggen, Erlend Magnus; Løvstakken, Lasse; Måsøy, Svein-Erik; Merciu, Ioan Alexandru. (2021) Better Automatic Interpretation of Cement Evaluation Logs through Feature Engineering. SPE Journal
Academic article
Dietrichson, Fabian Sødal; Smistad, Erik; Østvik, Andreas; Løvstakken, Lasse. (2018) Ultrasound speckle reduction using generative adversial networks. Proceedings - IEEE Ultrasonics Symposium
Academic article
van de Vyver, Gilles; Måsøy, Svein-Erik; Dalen, Håvard; Grenne, Bjørnar Leangen; Holte, Espen; Olaisen, Sindre Hellum; Nyberg, John; Østvik, Andreas; Løvstakken, Lasse; Smistad, Erik. (2025) Regional Image Quality Scoring for 2-D Echocardiography Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Løvstakken, Lasse; Yu, Alfred C. H.; Torp, Hans. (2007) P6B-3 In Vivo Investigation of Filter order Influence in Eigen-based Clutter Filtering for Color Flow Imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article
Yu, Alfred C. H.; Løvstakken, Lasse. (2007) Eigen-Based Clutter Filters for Color Flow Imaging: Single-Ensemble vs. Multi-Ensemble Approaches. IEEE International Ultrasonics Symposium Proceedings
Academic article
Oddershede, Niels; Løvstakken, Lasse; Torp, Hans; Jensen, Jørgen A.. (2007) Multi-dimensional spectrum analysis for 2-D vector velocity estimation. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nancy, Bazilchuk; Pasdeloup, David Francis Pierre; Dalen, Håvard; Løvstakken, Lasse; Måsøy, Svein-Erik. (2024) Kunstig intelligens hjelper til med å se hjertet ditt. Gemini
Popular science article
Frijlink, Martijn Egbert; Løvstakken, Lasse; Torp, Hans. (2009) Investigation of transmit and receive performance at the fundamental and third harmonic resonance frequency of a medical ultrasound transducer. Ultrasonics
Academic article
Swillens, Abigail; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2009) Two-dimensional flow velocity estimation in the carotid bifurcation: a study of crossed-beam vector Doppler and speckle tracking using computational fluid dynamics. IEEE International Ultrasonics Symposium Proceedings
Academic article
Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2011) Model-based correction of angle-dependencies in navigated3-D flow imaging during neurosurgical interventions. IEEE International Ultrasonics Symposium Proceedings
Academic article
Wifstad, Sigurd Vangen; Kildahl, Henrik Agerup; Holte, Espen; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Salvesen, Øyvind Olav; Dalen, Håvard; Løvstakken, Lasse. (2024) EasyPISA: Automatic Integrated PISA Measurements of Mitral Regurgitation From 2-D Color-Doppler Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Ekroll, Ingvild Kinn; Voormolen, Marco Marien; Standal, Øyvind Krøvel-Velle; Rau, Jochen; Løvstakken, Lasse. (2015) Coherent compounding in doppler imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2007) A new ultrasound modality to visualise atrial septal defect flow in children. European Heart Journal-Cardiovascular Imaging
Conference abstract
Østvik, Andreas; Smistad, Erik; Aase, Svein Arne; Haugen, Bjørn Olav; Løvstakken, Lasse. (2017) Real-time classification of standard cardiac views in echocardiography using neural networks. Proceedings - IEEE Ultrasonics Symposium
Conference abstract
Ramalli, Alessandro; Rodriguez-Molares, Alfonso; Avdal, Jørgen; D'Hooge, Jan R M; Løvstakken, Lasse. (2020) High-Frame-Rate Color Doppler Echocardiography: A Quantitative Comparison of Different Approaches. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Løvstakken, Lasse; Orderud, Fredrik; Torp, Hans. (2007) Real-time Indication of Acoustic Window for Phased-Array Transducers in Ultrasound Imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article
Henry, Matthew; Fadnes, Solveig; Løvstakken, Lasse; Mawad, Wadi; Mertens, Luc; Nyrnes, Siri Ann. (2021) Bicuspid aortic valve flow dynamics using blood speckle tracking in children. European Heart Journal-Cardiovascular Imaging
Conference abstract
Cauwenberge, Joris Van; Løvstakken, Lasse; Fadnes, Solveig; Rodriguez-Molares, Alfonso; Vierendeels, Jan; Segers, Patrick; Swillens, Abigail. (2016) Assessing the Performance of Ultrafast Vector Flow Imaging in the Neonatal Heart via Multiphysics Modeling and in Vitro Experiments. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Fadnes, Solveig; Nyrnes, Siri Ann; Wigen, Morten Smedsrud; Tegnander, Eva; Løvstakken, Lasse. (2016) Detailed flow visualization in fetal and neonatal hearts using 2-D speckle tracking. Proceedings - IEEE Ultrasonics Symposium
Academic article
Chernyshov, Artem; Grue, Jahn Frederik; Nyberg, John; Grenne, Bjørnar Leangen; Dalen, Håvard; Aase, Svein Arne; Østvik, Andreas; Løvstakken, Lasse. (2024) Automated Segmentation and Quantification of the Right Ventricle in 2-D Echocardiography. Ultrasound in Medicine and Biology
Academic article
Eriksen-Volnes, Torfinn Kirknes; Grue, Jahn Frederik; Olaisen, Sindre Hellum; Letnes, Jon Magne; Nes, Bjarne Martens; Løvstakken, Lasse; Wisløff, Ulrik; Dalen, Håvard. (2023) Normalized Echocardiographic Values From Guideline-Directed Dedicated Views for Cardiac Dimensions and Left Ventricular Function. JACC Cardiovascular Imaging
Academic article
Sørensen, Kristian; Fadnes, Solveig; Mertens, Luc; Henry, Matthew; Segers, Patrick; Løvstakken, Lasse; Nyrnes, Siri Ann. (2023) Assessment of Early Diastolic Intraventricular Pressure Difference in Children by Blood Speckle-Tracking Echocardiography. Journal of the American Society of Echocardiography
Academic article
Grønli, Thomas; Smistad, Erik; Nyrnes, Siri Ann; Gomez, Alberto; Løvstakken, Lasse. (2016) Reconstruction of In Vivo Flow Velocity Fields Based On a Rapid Ultrasound Image Segmentation and B-spline Regularization Framework. Proceedings - IEEE Ultrasonics Symposium
Academic article
Karabiyik, Yucel; Ekroll, Ingvild Kinn; Eik-Nes, Sturla; Avdal, Jørgen; Løvstakken, Lasse. (2016) Adaptive Spectral Estimation Methods in Color Flow Imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Fadnes, Solveig; Sørensen, Kristian; Nyrnes, Siri Ann; Wigen, Morten Smedsrud; Løvstakken, Lasse. (2020) Intraventricular Pressure Gradients - Vector Flow Imaging versus Color M-Mode. Proceedings - IEEE Ultrasonics Symposium
Academic article
Santos, Pedro; Haugen, Geir Ultveit; Løvstakken, Lasse; Samset, Eigil; D'Hooge, Jan. (2016) High frame rate 3D tissue velocity imaging using sub-aperture beamforming: A pilot study in vivo. Proceedings - IEEE Ultrasonics Symposium
Academic article
Fadnes, Solveig; Wigen, Morten Smedsrud; Nyrnes, Siri Ann; Løvstakken, Lasse. (2017) In vivo intracardiac vector flow imaging using phased array transducers for pediatric cardiology. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Denarie, Bastien; Tangen, Thor Andreas; Ekroll, Ingvild Kinn; Rolim, Natale Pinheiro Lage; Torp, Hans; Bjåstad, Tore; Løvstakken, Lasse. (2013) Coherent Plane Wave Compounding for Very High Frame Rate Ultrasonography of Rapidly Moving Targets. IEEE Transactions on Medical Imaging
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2011) Change in left ventricular vortex flow before and after surgery for coarctation of the aorta in an infant shown with plane wave imaging and flow speckle tracking. Cardiology in the Young
Conference abstract
Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Smistad, Erik; Pasdeloup, David Francis Pierre; Stølen, Stian Bergseng; Grenne, Bjørnar Leangen; Løvstakken, Lasse; Holte, Espen; Dalen, Håvard. (2023) Real-time guiding by deep learning during echocardiography to reduce left ventricular foreshortening and measurement variability. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Løvstakken, Lasse; Bjærum, Steinar; Kristoffersen, K; Haaverstad, Rune; Torp, Hans. (2006) Real-time adaptive clutter rejection filtering in color flow imaging using power method iterations. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Rodriguez-Molares, Alfonso; Løvstakken, Lasse; Torp, Hans; Martin-Herrero, Julio; Bjåstad, Tore Grüner. (2015) Detection of the Intima-Lumen interface by coherent combination of RF scanlines. Proceedings - IEEE Ultrasonics Symposium
Academic article
Rodriguez-Molares, Alfonso; Torp, Hans; Denarie, Bastien; Løvstakken, Lasse. (2015) The angular apodization in coherent plane-wave compounding. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Østvik, Andreas; Smistad, Erik; Aase, Svein Arne; Haugen, Bjørn Olav; Løvstakken, Lasse. (2018) Real-time Standard View Classification in Transthoracic Echocardiography using Convolutional Neural Networks. Ultrasound in Medicine and Biology
Academic article
Smistad, Erik; Østvik, Andreas; Salte, Ivar Mjåland; Melichova, Daniela; Nguyen, Thuy Mi; Haugaa, Kristina; Brunvand, Harald; Edvardsen, Thor; Leclerc, Sarah; Bernard, Olivier. (2020) Real-Time Automatic Ejection Fraction and Foreshortening Detection Using Deep Learning. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Torp, Hans; Rodriguez-Molares, Alfonso; Løvstakken, Lasse. (2015) Optimum beamformer strategy for detecting signals in clutter noise. Proceedings - IEEE Ultrasonics Symposium
Academic article
Rodriguez-Molares, Alfonso; Løvstakken, Lasse; Ekroll, Ingvild Kinn; Torp, Hans. (2015) Needle detection by image source localization. Proceedings - IEEE Ultrasonics Symposium
Academic article
Fadnes, Solveig; Nyrnes, Siri Ann; Torp, Hans; Løvstakken, Lasse. (2014) Shunt flow evaluation in congenital heart disease based on two-dimensional speckle tracking. Ultrasound in Medicine and Biology
Academic article
Daae, Annichen Søyland; Wigen, Morten Smedsrud; Halvorsrød, Marlene Iversen; Løvstakken, Lasse; Støylen, Asbjørn; Fadnes, Solveig. (2023) Retrospective Ultrasound Doppler Quantification Using a Single Acquisition in Healthy Adults. Ultrasound in Medicine and Biology
Academic article
Wifstad, Sigurd Vangen; Løvstakken, Lasse; Avdal, Jørgen; Berg, Erik Andreas Rye; Torp, Hans; Grenne, Bjørnar; Fiorentini, Stefano. (2022) Quantifying Valve Regurgitation Using 3-D Doppler Ultrasound Images and Deep Learning. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2007) Blood Flow Imaging - A New Angle-Independent Ultrasound Modality for the Visualization of Flow in Atrial Septal Defects in Children. Echocardiography
Academic article
Iversen, Daniel Høyer; Løvstakken, Lasse; Unsgård, Geirmund; Reinertsen, Ingerid. (2018) Automatic intraoperative estimation of blood flow direction during neurosurgical interventions. International Journal of Computer Assisted Radiology and Surgery
Academic article
Rodriguez-Molares, Alfonso; Løvstakken, Lasse; Ekroll, Ingvild Kinn; Torp, Hans. (2015) Reconstruction of specular reflectors by iterative image source localization. Journal of the Acoustical Society of America
Academic article
Mawad, Wadi; Fadnes, Solveig; Løvstakken, Lasse; Henry, Matthew; Mertens, Luc; Nyrnes, Siri Ann. (2022) Pulmonary Hypertension in Children is associated with Abnormal Flow patterns in the Main Pulmonary Artery as demonstrated by Blood Speckle Tracking. CJC Pediatric and Congenital Heart Disease
Academic article
Santos, Pedro; Tong, Ling; Ortega, Alejandra; Løvstakken, Lasse; Samset, Eigil; D'Hooge, Jan R M. (2015) Acoustic output of multi-line transmit beamforming for fast cardiac imaging: A simulation study. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Løvstakken, Lasse; Nyrnes, Siri Ann; Haugen, Bjørn Olav; Torp, Hans. (2012) Angle-independent quantification of complex flow patterns in congenital heart disease. IEEE International Ultrasonics Symposium Proceedings
Academic article
Alnes, Solveig Søvik; Swillens, Abigail; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2011) Clutter filtering issues in speckle tracking for two-dimensional blood velocity estimation - a potential solution based on compounded imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article
Swillens, Abigail Emily; Santis, G. De; Degroote, Joris; Løvstakken, Lasse; Vierendeels, Jan; Segers, Patrick. (2011) Strain estimation in the carotid artery from ultrasonic wall tracking: a multiphysics model study. IEEE International Ultrasonics Symposium Proceedings
Academic article
Swillens, Abigail Emily; Santis, G. De; Degroote, Joris; Løvstakken, Lasse; Vierendeels, Jan; Segers, Patrick. (2011) Multiphysics modeling in support of ultrasonic image development: integration of fluid-structure interaction simulations and Field II applied to the carotid artery. IEEE International Ultrasonics Symposium Proceedings
Academic article
Sæbø, Sigbjørn; Pasdeloup, David Francis Pierre; Pettersen, Håkon Neergaard; Smistad, Erik; Østvik, Andreas; Olaisen, Sindre Hellum; Stølen, Stian Bergseng; Grenne, Bjørnar Leangen; Holte, Espen; Løvstakken, Lasse. (2023) Real-time guidance by deep learning of experienced operators to improve the standardization of echocardiographic acquisitions. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Ekroll, Ingvild Kinn; Swillens, Abigail; Segers, Patrick; Dahl, Torbjørn; Torp, Hans; Løvstakken, Lasse. (2013) Simultaneous Quantification of Flow and Tissue Velocities Based on Multi-Angle Plane Wave Imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Canneyt, K. Van; Swillens, Abigail; Løvstakken, Lasse; Antiga, L; Verdonck, P.; Segers, Patrick. (2012) The accuracy of ultrasound volume flow measurements in the complex flow setting of a forearm vascular access. Journal of Vascular Access
Academic article
Salles, Sebastien; Espeland, Torvald; Rodriguez-Molares, Alfonso; Aase, Svein Arne; Hammer, Tommy; Støylen, Asbjørn; Aakhus, Svend; Løvstakken, Lasse; Torp, Hans. (2020) 3D Myocardial Mechanical Wave Measurements: Toward In Vivo 3D Myocardial Elasticity Mapping. JACC Cardiovascular Imaging
Academic article
Fredriksen, Tonje Dobrowen; Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans. (2012) 2D Tracking Doppler: A New Method to Limit Spectral Broadening in Pulsed Wave Doppler. Proceedings - IEEE Ultrasonics Symposium
Academic article
Ekroll, Ingvild Kinn; Avdal, Jørgen; Swillens, Abigail Emily; Torp, Hans; Løvstakken, Lasse. (2016) An Extended Least Squares Method for Aliasing-Resistant Vector Velocity Estimation. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Sørensen, Kristian; Fadnes, Solveig; Myklebust, Tor Åge; Løvstakken, Lasse; Mertens, Luc; Nyrnes, Siri Ann. (2025) Changes in left ventricular diastolic flow dynamics in the neonatal transition period and beyond. American Journal of Physiology. Heart and Circulatory Physiology
Academic article
Swillens, Abigail; Løvstakken, Lasse; Torp, Hans; Segers, Patrick. (2008) A comparison of multidimensional flow estimation techniques using computational fluid dynamics: speckle tracking versus vector Doppler. IEEE International Ultrasonics Symposium Proceedings
Academic article
Karabiyik, Yücel; Ekroll, Ingvild Kinn; Eik-Nes, Sturla; Løvstakken, Lasse. (2018) Quantitative Doppler analysis using conventional color flow imaging acquisitions. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Wifstad, Sigurd Vangen; Kildahl, Henrik Agerup; Grenne, Bjørnar Leangen; Holte, Espen; Hauge, Ståle Wågen; Sæbø, Sigbjørn; Mekonnen, Desalew; Nega, Berhanu; Haaverstad, Rune; Estensen, Mette-Elise. (2024) Mitral Valve Segmentation and Tracking from Transthoracic Echocardiography Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Hjorth-Hansen, Anna; Magelssen, Malgorzata Isabela; Andersen, Garrett Newton; Graven, Torbjørn; Kleinau, Jens Olaf; Landstad, Bodil; Løvstakken, Lasse; Skjetne, Kyrre; Mjølstad, Ole Christian; Dalen, Håvard. (2022) Real-time automatic quantification of left ventricular function by hand-held ultrasound devices in patients with suspected heart failure: a feasibility study of a diagnostic test with data from general practitioners, nurses and cardiologists. BMJ Open
Academic article
Løvstakken, Lasse; Bjærum, Steinar; Martens, Ditlef; Torp, Hans. (2006) Blood flow imaging - A new real-time, 2-D flow imaging technique. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Rodriguez-Molares, Alfonso; Torp, Hans; Lippe, Boris; Løvstakken, Lasse. (2017) Sequential CPWC: from ultrafast to ultralight. Proceedings of SPIE, the International Society for Optical Engineering
Academic article
Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2010) Retrospective PW-Doppler based on spatiotemporal adaptive signal processing. IEEE International Ultrasonics Symposium Proceedings
Academic article
Smistad, Erik; Østvik, Andreas; Haugen, Bjørn Olav; Løvstakken, Lasse. (2017) 2D left ventricle segmentation using deep learning. Proceedings - IEEE Ultrasonics Symposium
Academic article
Rimehaug, Audun Eskeland; Skogvoll, Eirik; Aadahl, Petter; Lyng, Oddveig; Nordhaug, Dag Ole; Løvstakken, Lasse; Kirkeby-Garstad, Idar. (2016) Minimally invasive beat-by-beat monitoring of cardiac power in normal hearts and during acute ventricular dysfunction. Physiological Reports
Academic article
Sørensen, Kristian; Fadnes, Solveig; Mawad, Wadi; Henry, Matthew; Flade, Hans-Martin; Østvik, Andreas; Myklebust, Tor Åge; Kirkeby-Garstad, Idar; Løvstakken, Lasse; Mertens, Luc. (2025) Intraventricular Pressure Difference Estimation based on Blood Speckle Tracking - Invasive Validation and Early Clinical Application. European Heart Journal-Cardiovascular Imaging
Academic article
Østvik, Andreas; Salte, Ivar Mjåland; Smistad, Erik; Nguyen, Thuy Mi; Melichova, Daniela; Brunvand, Harald; Haugaa, Kristina; Edvardsen, Thor; Grenne, Bjørnar; Løvstakken, Lasse. (2021) Myocardial Function Imaging in Echocardiography Using Deep Learning. IEEE Transactions on Medical Imaging
Academic article
Ramalli, Alessandro; D'Hooge, Jan; Løvstakken, Lasse; Tortoli, Piero. (2019) A Direct Measurement of Inter-Element Cross-Talk in Ultrasound Arrays. Proceedings - IEEE Ultrasonics Symposium
Academic article
Ekroll, Ingvild Kinn; Dahl, Torbjørn; Torp, Hans; Løvstakken, Lasse. (2014) Combined vector velocity and spectral doppler imaging for improved imaging of complex blood flow in the carotid arteries. Ultrasound in Medicine and Biology
Academic article
Daae, Annichen Søyland; Wigen, Morten Smedsrud; Fadnes, Solveig; Løvstakken, Lasse; Støylen, Asbjørn. (2021) Intraventricular Vector Flow Imaging with Blood Speckle Tracking in Adults: Feasibility, Normal Physiology and Mechanisms in Healthy Volunteers. Ultrasound in Medicine and Biology
Academic article
Szerypo Magelssen, Malgorzata Izabela; Hjorth-Hansen, Anna; Andersen, Garrett Newton; Graven, Torbjørn; Kleinau, Jens Olaf; Skjetne, Kyrre; Løvstakken, Lasse; Dalen, Håvard; Mjølstad, Ole Christian. (2023) Clinical Influence of Handheld Ultrasound, Supported by Automatic Quantification and Telemedicine, in Suspected Heart Failure. Ultrasound in Medicine and Biology
Academic article
Rodriguez-Molares, Alfonso; Fatemi, Ali; Løvstakken, Lasse; Torp, Hans. (2017) Specular Beamforming. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Salte, Ivar M.; Østvik, Andreas; Smistad, Erik; Melichova, Daniela; Nguyen, Thuy Mi; Karlsen, Sigve; Brunvand, Harald; Haugaa, Kristina H.; Edvardsen, Thor; Løvstakken, Lasse. (2021) Artificial Intelligence for Automatic Measurement of Left Ventricular Strain in Echocardiography. JACC Cardiovascular Imaging
Academic article
Ekroll, Ingvild Kinn; Dahl, Torbjørn; Torp, Hans; Løvstakken, Lasse. (2012) In vivo Vector Flow Imaing With Retrospective Pulsed Wave Doppler. Proceedings - IEEE Ultrasonics Symposium
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse. (2008) Ny ultralydmetode gir bedre blodstrømsbilder. Dagens medisin
Professional article
Rodriguez-Molares, Alfonso; Fatemi, Seyed Ali Mohammad; Torp, Hans; Løvstakken, Lasse. (2016) Adaptive beamforming based on Snell's law of reflection. Proceedings - IEEE Ultrasonics Symposium
Academic article
Rodriguez-Molares, Alfonso; Avdal, Jørgen; Torp, Hans; Løvstakken, Lasse. (2016) Axial lobes in coherent plane-wave compounding. Proceedings - IEEE Ultrasonics Symposium
Academic article
Tannvik, Tomas Dybos; Rimehaug, Audun Eskeland; Wigen, Morten Smedsrud; Løvstakken, Lasse; Kirkeby-Garstad, Idar. (2019) Ventriculo-arterial interaction may be assessed by Oscillatory Power Fraction. Clinical Physiology and Functional Imaging
Academic article
Wigen, Morten Smedsrud; Fadnes, Solveig; Rodriguez-Molares, Alfonso; Bjåstad, Tore Grüner; Eriksen, Marius; Stensæth, KNUT HAAKON; Støylen, Asbjørn; Løvstakken, Lasse. (2018) 4-D Intracardiac Ultrasound Vector Flow Imaging-Feasibility and Comparison to Phase-Contrast MRI. IEEE Transactions on Medical Imaging
Academic article
Mohajery, Mohammad; Salles, Sebastien Andre Roger; Espeland, Torvald; Fadnes, Solveig; Løvstakken, Lasse. (2023) Automated 3D velocity estimation of natural mechanical wave propagation in the myocardium. IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control Society (OJUFFC)
Academic article
Nguyen, Minh B.; Villemain, Olivier; Friedberg, Mark K.; Løvstakken, Lasse; Rusin, Graig G.; Mertens, Luc. (2022) Artificial intelligence in the pediatric echocardiography laboratory: Automation, physiology, and outcomes. Frontiers in Radiology
Academic literature review
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2011) Flow speckle tracking for detailed visualization of flow patterns in neonates with congenital heart defects. European Heart Journal-Cardiovascular Imaging
Conference abstract
Løvstakken, Lasse; Tangen, Thor Andreas; Bjærum, Steinar; Torp, Hans. (2006) Optimal velocity estimation in ultrasound Color Flow Imaging in presence of clutter noise. IEEE International Ultrasonics Symposium Proceedings
Academic article
Løvstakken, Lasse; Bjærum, Steinar; Torp, Hans. (2007) Optimal velocity estimation in ultrasound Color Flow Imaging in presence of clutter. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Wigen, Morten Smedsrud; Løvstakken, Lasse. (2016) In vivo three-dimensional intra-cardiac vector flow imaging using a 2D matrix array transducer. Proceedings - IEEE Ultrasonics Symposium
Academic article
Fadnes, Solveig; Nyrnes, Siri Ann; Swillens, Abigail; Torp, Hans; Løvstakken, Lasse. (2012) Shunt quantification in congenital heart disease based on two-dimensional speckle tracking. Proceedings - IEEE Ultrasonics Symposium
Academic article
Leclerc, Sarah; Smistad, Erik; Grenier, Thomas; Lartizien, Carole; Østvik, Andreas; Espinosa, Florian; Jodoin, Pierre-Marc; Løvstakken, Lasse; Bernard, Olivier. (2018) Deep learning applied to multi-structure segmentation in 2D echocardiography: A preliminary investigation of the required database size. Proceedings - IEEE Ultrasonics Symposium
Academic article
Iversen, Daniel Høyer; Lindseth, Frank; Torp, Hans; Løvstakken, Lasse. (2012) Model-based correction of angle-dependencies in navigated 3-D flow imaging during neurosurgical interventions. IEEE International Ultrasonics Symposium Proceedings
Conference abstract
Fiorito, Adrian Meidell; Østvik, Andreas; Smistad, Erik; Leclerc, Sarah; Bernard, Olivier; Løvstakken, Lasse. (2018) Detection of Cardiac Events in Echocardiography using 3D Convolutional Recurrent Neural Networks. Proceedings - IEEE Ultrasonics Symposium
Academic article
Hu, Jieyu; Olaisen, Sindre Hellum; Smistad, Erik; Dalen, Håvard; Løvstakken, Lasse. (2023) Automated 2-D and 3-D Left Atrial Volume Measurements Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Mawad, Wadi; Løvstakken, Lasse; Fadnes, Solveig; Mertens, Luc; Nyrnes, Siri Ann. (2017) Right ventricular flow dynamics in dilated right ventricles. Energy loss estimation based on blood speckle tracking echocardiography in children. Journal of the American Society of Echocardiography
Conference abstract
Santos, Pedro; Haugen, Geir Ultveit; Løvstakken, Lasse; Samset, Eigil; D'Hooge, Jan R M. (2016) Diverging Wave Volumetric Imaging Using Subaperture Beamforming. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Golfetto, Cristiana; Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse; Avdal, Jørgen. (2020) Retrospective Transmit beamforming and Coherent Plane-Wave Compounding for Microvascular Doppler Imaging: A Comparison Study. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Hjorth-Hansen, Anna Katarina; Magelssen, Malgorzata Isabela; Andersen, Garrett Newton; Graven, Torbjørn; Kleinau, Jens Olaf; Landstad, Bodil; Løvstakken, Lasse; Skjetne, Kyrre; Mjølstad, Ole Christian; Dalen, Håvard. (2022) User experience and image quality influence on performance of automated real-time quantification of left ventricular function by handheld ultrasound devices: a diagnostic accuracy study with data from general practitioners, nurses and cardiologists. Open heart
Academic article
Swillens, Abigail Emily; Degroote, J.; Vierendeels, Jan; Løvstakken, Lasse; Segers, Patrick. (2010) A simulation environment for validating ultrasonic blood flow and vessel wall imaging based on fluid-structure interaction simulations: ultrasonic assessment of arterial distension and wall shear rate. Medical Physics
Academic article
Løvstakken, Lasse; Torp, Hans. (2010) Extended Velocity Range in Color Flow Imaging using Parallel Receive Beamforming. IEEE International Ultrasonics Symposium Proceedings
Academic article
Perrot, Vincent; Ekroll, Ingvild Kinn; Avdal, Jørgen; Saxhaug, Lars Mølgaard; Dalen, Håvard; Vray, Didier; Løvstakken, Lasse; Liebgott, Herve. (2020) Translation of Simultaneous Vessel Wall Motion and Vectorial Blood Flow Imaging in Healthy and Diseased Carotids to the Clinic: A pilot study. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Olaisen, Sindre Hellum; Smistad, Erik; Espeland, Torvald; Hu, Jieyu; Pasdeloup, David Francis Pierre; Østvik, Andreas; Aakhus, Svend; Rösner, Assami; Malm, Siri; Stylidis, Michael. (2023) Automatic measurements of left ventricular volumes and ejection fraction by artificial intelligence: clinical validation in real time and large databases. European Heart Journal-Cardiovascular Imaging
Academic article
Hergum, Torbjørn; Bjåstad, Tore Grüner; Løvstakken, Lasse; Kristoffersen, Kjell; Torp, Hans. (2010) Reducing Color Flow Artifacts caused by Parallel Beamforming. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Swillens, Abigail Emily; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2010) Two-dimensional blood velocity estimation with ultrasound: speckle tracking versus crossed-beam vector Doppler based on flow simulations in a carotid bifurcation model. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Swillens, Abigail Emily; Santis, G. De; Degroote, Joris; Løvstakken, Lasse; Vierendeels, Jan; Segers, Patrick. (2012) Accuracy of carotid strain estimates from ultrasonic wall tracking: a study based on multiphysics simulations and in vivo data. IEEE Transactions on Medical Imaging
Academic article
Rimehaug, Audun Eskeland; Lyng, Oddveig; Nordhaug, Dag Ole; Løvstakken, Lasse; Aadahl, Petter; Kirkeby-Garstad, Idar. (2013) Cardiac power integral: a new method for monitoring cardiovascular performance. Physiological Reports
Academic article
Høgenes, Jakob; Wigen, Morten Smedsrud; Nyrnes, Siri Ann; Segers, P.; Swillens, Abigail; Løvstakken, Lasse. (2016) Model-based estimation of intra-cardiac blood flow velocities using an unscented Kalman filter. Proceedings - IEEE Ultrasonics Symposium
Academic article
Nyberg, John Anders Tomas; Jakobsen, Even Olav; Østvik, Andreas; Holte, Espen; Stølen, Stian; Løvstakken, Lasse; Grenne, Bjørnar Leangen; Dalen, Håvard. (2023) Determinants of left atrial reservoir strain in a large healthy population. European Heart Journal-Cardiovascular Imaging
Conference abstract
Leclerc, Sarah; Smistad, Erik; Pedrosa, Joao; Østvik, Andreas; Cervenansky, Frederic; Espinosa, Florian; Espeland, Torvald; Berg, Erik Andreas Rye; Jodoin, Pierre-Marc; Grenier, Thomas. (2019) Deep Learning for Segmentation using an Open Large-Scale Dataset in 2D Echocardiography. IEEE Transactions on Medical Imaging
Academic article
Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2013) Model-Based Correction of Velocity Measurements in Navigated 3-D Ultrasound Imaging During Neurosurgical Interventions. IEEE Transactions on Medical Imaging
Academic article
Avdal, Jørgen; Løvstakken, Lasse; Torp, Hans; Ekroll, Ingvild Kinn. (2017) Combined 2-D Vector imaging and Tracking Doppler for improved vascular blood velocity quantification. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Smistad, Erik; Løvstakken, Lasse. (2016) Vessel detection in ultrasound images using deep convolutional neural networks. Lecture Notes in Computer Science (LNCS)
Academic article
Avdal, Jørgen; Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans. (2016) Combined 2-D vector and tracking Doppler imaging for improved blood velocity quantification. Proceedings - IEEE Ultrasonics Symposium
Academic article
Iversen, Daniel Høyer; Lindseth, Frank; Torp, Hans; Løvstakken, Lasse. (2012) Improved 3-D reconstruction of vascular flow based on plane wave imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article
Salles, Sebastien; Kvåle, Kaja Frøysaa; Lervik, Lars Christian Naterstad; Støylen, Asbjørn; Løvstakken, Lasse; Samset, Eigil; Torp, Hans. (2020) Detection of Tissue Fibrosis using Natural Mechanical Wave Velocity Estimation: Feasibility Study. Ultrasound in Medicine and Biology
Academic article
Sengupta, Partho P.; Shrestha, Sirish; Berthon, Béatrice; Messas, Emmanuel; Donal, Erwan; Tison, Geoffrey H.; Min, James K.; D'Hooge, Jan R M; Voigt, Jens-Uwe; Dudley, Joel. (2020) Proposed Requirements for Cardiovascular Imaging-Related Machine Learning Evaluation (PRIME): A Checklist: Reviewed by the American College of Cardiology Healthcare Innovation Council. JACC Cardiovascular Imaging
Academic literature review
Perrot, Vincent; Avdal, Jørgen; Løvstakken, Lasse; Salles, Sebastien; Vray, Didier; Liebgott, Herve; Ekroll, Ingvild Kinn. (2018) Spatial and temporal adaptive FIR clutter filtering. Proceedings - IEEE Ultrasonics Symposium
Academic article
Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2015) Improved quality of freehand 3-D ultrasound color flow imaging by multi-angle compounding. Proceedings - IEEE Ultrasonics Symposium
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2008) The coronary arteries visualised by a new ultrasound flow modality. European Heart Journal-Cardiovascular Imaging
Conference abstract
Avdal, Jørgen; Løvstakken, Lasse; Torp, Hans. (2015) Effects of reverberations and clutter filtering in pulsed Doppler using sparse sequences. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Mawad, Wadi; Fadnes, Solveig; Grønli, Thomas; Løvstakken, Lasse; Mertens, Luc; Nyrnes, Siri Ann. (2020) Children with Pulmonary Hypertension Have Abnormal Flow patterns in the Main Pulmonary Artery as Shown By High Frame Rate Ultrasound Imaging. Journal of the American Society of Echocardiography
Conference abstract
Pettersen, Håkon Neergaard; Sæbø, Sigbjørn; Pasdeloup, David Francis Pierre; Østvik, Andreas; Smistad, Erik; Stølen, Stian Bergseng; Grenne, Bjørnar; Løvstakken, Lasse; Dalen, Håvard; Holte, Espen. (2022) The impact of real-time feedback by deep learning during echocardiographic scanning on test-retest variability of left ventricular systolic function measurements. European Heart Journal-Cardiovascular Imaging
Conference abstract
Nyrnes, Siri Ann; Fadnes, Solveig; Wigen, Morten Smedsrud; Mertens, Luc; Løvstakken, Lasse. (2020) Blood Speckle-Tracking Based on High–Frame Rate Ultrasound Imaging in Pediatric Cardiology. Journal of the American Society of Echocardiography
Academic article
Indimath, Shivanandan; Wifstad, Sigurd Vangen; Bryon, Vincent; Bøklepp, Bjarne Rosvoll; Løvstakken, Lasse; Avdal, Jørgen; Fiorentini, Stefano; Måsøy, Svein-Erik. (2024) Subpixel segmentation of borehole fractures from low resolution Doppler ultrasound images using machine learning. Geoenergy Science and Engineering
Academic article
Santos, Pedro; Tong, Ling; Ortega, Alejandra; Løvstakken, Lasse; Samset, Eigil; D'Hooge, Jan R M. (2014) Safety of Multi-Line Transmit beam forming for fast cardiac imaging - A simulation study. IEEE International Ultrasonics Symposium Proceedings
Academic article
Swillens, Abigail; Shcherbakova, Darya; Trachet, Bram; Segers, Patrick; Ekroll, Ingvild Kinn; Løvstakken, Lasse. (2014) A multi-angle plane wave imaging approach for high frequency 2D flow visualization in small animals: Simulation study in the murine arterial system. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyberg, John; Østvik, Andreas; Salte, Ivar Mjåland; Olaisen, Sindre Hellum; Karlsen, Sigve; Dahlslett, Thomas; Smistad, Erik; Eriksen-Volnes, Torfinn Kirknes; Brunvand, Harald; Edvardsen, Thor. (2024) Deep learning improves test–retest reproducibility of regional strain in echocardiography. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Angelelli, Paolo; Snare, Sten Roar; Nyrnes, Siri Ann; Bruckner, Stefan; Hauser, Helwig; Løvstakken, Lasse. (2014) Live ultrasound-based particle visualization of blood flow in the heart. Spring conference on Computer graphics
Academic article
Kiss, Gabriel; Iversen, Daniel Høyer; Standal, Øyvind Krøvel-Velle; Rau, Jochen; Torp, Hans; Løvstakken, Lasse; Måsøy, Svein-Erik. (2014) A visualization tool for improved assessment and follow-up with ultrasound. IEEE International Ultrasonics Symposium Proceedings
Academic article
Avdal, Jørgen; Ekroll, Ingvild Kinn; Fadnes, Solveig; Løvstakken, Lasse; Torp, Hans. (2014) 2D tracking doppler for cardiac jet flow velocity estimation. IEEE International Ultrasonics Symposium Proceedings
Academic article
Ekroll, Ingvild Kinn; Voormolen, Marco Marien; Standal, Øyvind Krøvel-Velle; Rau, Jochen; Løvstakken, Lasse. (2014) On the accuracy of coherent compounding Doppler imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Døhlen, Gaute; Skogvoll, Eirik; Torp, Hans; Skjærpe, Terje; Norgård, Gunnar; Samstad, Stein; Graven, Torbjørn; Haugen, Bjørn Olav. (2014) Blood Flow Imaging in Transesophageal Echocardiography during Atrial Septal Defect Closure: A Comparison with the Current References. Echocardiography
Academic article
Løvstakken, Lasse; Ibrahim, Khalid Shaker Oklah; Vitale, Nicola; Henriksen, Siren T.; Kirkeby-Garstad, Idar; Torp, Hans; Haaverstad, Rune. (2008) Blood Flow Imaging: A New Two-dimensional Ultrasound Modality for Enhanced Intraoperative Visualization of Blood Flow Patterns in Coronary Anastomoses. Journal of the American Society of Echocardiography
Academic article
Khalid, Ibrahim; Løvstakken, Lasse; Kirkeby-Garstad, Idar; Torp, Hans; Vik-Mo, Harald; Haaverstad, Rune. (2007) Effect of the Cardiac Cycle on the Coronary Anastomosis Assessed by Ultrasound. Asian Cardiovascular and Thoracic Annals
Academic article
Rodriguez-Molares, Alfonso; Rindal, Ole Marius Hoel; Bernard, Olivier; Nair, Arun; Bell, Muyinatu A. Lediju; Liebgott, Herve; Austeng, Andreas; Løvstakken, Lasse. (2017) The UltraSound ToolBox. Proceedings - IEEE Ultrasonics Symposium
Academic article
Leclerc, Sarah; Smistad, Erik; Østvik, Andreas; Cervenansky, Frederic; Espinosa, Florian; Espeland, Torvald; Berg, Erik Andreas Rye; Belhamissi, Mourad; Israilov, Sardor; Grenier, Thomas. (2020) LU-Net: A Multistage Attention Network to Improve the Robustness of Segmentation of Left Ventricular Structures in 2-D Echocardiography. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Swillens, A; Løvstakken, Lasse; Kips, J; Torp, Hans; Segers, P. (2009) Ultrasound Simulation of Complex Flow Velocity Fields Based on Computational Fluid Dynamics. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Sørensen, Kristian; Fadnes, Solveig; Salvesen, Øyvind; Mertens, Luc; Løvstakken, Lasse; Nyrnes, Siri Ann. (2021) Assessment of Regional Early Diastolic Intraventricular Pressure Gradients by Blood Speckle Tracking in Children. Journal of the American Society of Echocardiography
Conference abstract
Fadnes, Solveig; Ekroll, Ingvild Kinn; Nyrnes, Siri Ann; Torp, Hans; Løvstakken, Lasse. (2014) Robust angle-independent blood velocity estimation based on multi-angle speckle tracking and vector Doppler. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2010) Does a new ultrasound flow modality improve visualization of neonatal pulmonary veins?. Echocardiography
Academic article
Aakervik, Anne-Lise; Løvstakken, Lasse; Torp, Hans; Aakhus, Svend. (2019) Lydbølger som er viktig for helsa. Gemini
Popular science article
Nyrnes, Siri Ann; Løvstakken, Lasse. (2015) Flow speckle tracking provides new information of complex blood flow in congenital heart disease. Cardiology in the Young
Conference abstract
Yari, Yasin; Næve, Ingun; Hammerdal, Asle; Bergtun, Per Helge; Måsøy, Svein-Erik; Voormolen, Marco Marien; Løvstakken, Lasse. (2024) Automated Measurement of Ovary Development in Atlantic Salmon Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Salles, Sebastien; Løvstakken, Lasse; Aase, Svein Arne; Bjåstad, Tore Grüner; Torp, Hans. (2019) Clutter Filter Wave Imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Leinan, Paul Roger; Grønli, Thomas; Skjetne, Paal; Wigen, Morten Smedsrud; Urheim, Stig; Løvstakken, Lasse; Dahl, Sigrid Kaarstad. (2022) Comparison of ultrasound vector flow imaging and CFD simulations with PIV measurements of flow in a left ventricular outflow trackt phantom - Implications for clinical use and in silico studies. Computers in Biology and Medicine
Academic article
Salles, Sebastien; Rodriguez-Molares, Alfonso; Støylen, Asbjørn; Bjåstad, Tore Grüner; Aase, Svein Arne; Løvstakken, Lasse; Torp, Hans. (2017) 3D myocardial mechanical wave measurements using high frame rate ultrasound imaging and Clutter filter wave imaging: Towards a 3D myocardial elasticity mapping. Proceedings - IEEE Ultrasonics Symposium
Conference abstract
Swillens, A; Schryver, T De; Løvstakken, Lasse; Torp, Hans; Segers, P. (2009) Assessment of Numerical Simulation Strategies for Ultrasonic Color Blood Flow Imaging, Based on a Computer and Experimental Model of the Carotid Artery. Annals of Biomedical Engineering
Academic article
Mawad, Wadi; Løvstakken, Lasse; Fadnes, Solveig; Grønli, Thomas; Segers, Patrick; Mertens, Luc; Nyrnes, Siri Ann. (2021) Right Ventricular Flow Dynamics in Dilated Right Ventricles: Energy Loss Estimation Based on Blood Speckle Tracking Echocardiography-A Pilot Study in Children. Ultrasound in Medicine and Biology
Academic article
Pasdeloup, David Francis Pierre; Olaisen, Sindre Hellum; Østvik, Andreas; Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Holte, Espen; Grenne, Bjørnar; Stølen, Stian Bergseng; Smistad, Erik; Aase, Svein Arne. (2022) Real-Time Echocardiography Guidance for Optimized Apical Standard Views. Ultrasound in Medicine and Biology
Academic article
Garone, Rosa Virginia; Lønmo, Tor Inge Birkenes; Schimel, Alexandre; Diesing, Markus; Thorsnes, Terje; Løvstakken, Lasse. (2024) Corrigendum: Seabed classification of multibeam echosounder data into bedrock/non-bedrock using deep learning(Front. Earth Sci., (2023), 11, (1285368), 10.3389/feart.2023.1285368). Frontiers in Earth Science
Corrigendum

Part of book/report

Jakobsen, Even Olav; Østvik, Andreas; Pasdeloup, David; Smistad, Erik; Nyberg, John; Stølen, Stian Bergseng; Løvstakken, Lasse; Grenne, Bjørnar Leangen; Holte, Espen; Dalen, Håvard. (2025) Novel automated quality indicators for echocardiography and their importance for left ventricular strain.
Conference abstract
Bryon, Vincent; Wifstad, Sigurd Vangen; Grønli, Thomas; Hu, Jieyu; Løvstakken, Lasse. (2023) Automated Patient-Specific Left Ventricular Simulations for Cardiac Function Evaluation Using Image-Based Computational Fluid Dynamics and Color Flow Imaging.
Academic chapter
Løvstakken, Lasse; Møllerløkken, Andreas; Måsøy, Svein-Erik. (2009) Current trends in ultrasound imaging technology, SURF imaging, and decompression induced microbubbles.
Academic chapter
Hu, Jieyu; Smistad, Erik; Salte, Ivar Mjåland; Dalen, Håvard; Løvstakken, Lasse. (2022) Exploiting temporal information in echocardiography for improved image segmentation.
Academic chapter
Viggen, Erlend Magnus; Løvstakken, Lasse; Merciu, Ioan Alexandru; Måsøy, Svein-Erik. (2021) Better Automatic Interpretation of Cement Evaluation Logs through Feature Engineering.
Academic chapter
Chernyshov, Artem; Østvik, Andreas; Smistad, Erik; Løvstakken, Lasse. (2022) Segmentation of 2D cardiac ultrasound with deep learning: simpler models for a simple task.
Academic chapter
Hu, Jieyu; Smistad, Erik; Grenne, Bjørnar Leangen; Holte, Espen; Dalen, Håvard; Løvstakken, Lasse. (2023) Left-Ventricular Volume Estimation in Contrast-Enhanced Echocardiography Using Deep Learning.
Academic chapter
Azad, Md Abulkalam; Chernyshov, Artem; Nyberg, John Anders Tomas; Tveten, Ingrid Elisabeth; Løvstakken, Lasse; Dalen, Håvard; Grenne, Bjørnar Leangen; Østvik, Andreas. (2024) EchoTracker: Advancing Myocardial Point Tracking in Echocardiography.
Academic chapter

Student thesis or dissertation

Sæbø, Sigbjørn; Dalen, Håvard; Løvstakken, Lasse. (2025) Deep learning to improve echocardiography: Real-time guidance and automated measurements. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
van de Vyver, Gilles; Smistad, Erik; Løvstakken, Lasse; Dalen, Håvard. (2025) Reliable deep learning for echocardiography image analysis. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Karabiyik, Yucel; Løvstakken, Lasse; Ekroll, Ingvild Kinn; Torp, Hans; Eik-Nes, Sturla. (2017) Quantitative Doppler analysis using color flow imaging and adaptive signal processing. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Iversen, Daniel Høyer; Løvstakken, Lasse; Lindseth, Frank; Torp, Hans. (2014) Improved Methods for Navigated 3-D Vascular Ultrasound Imaging. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2014) New ultrasound flow modalities for evaluation of congenital heart defects. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Løvstakken, Lasse. (2007) Signal processing in diagnostic ultrasound: Algorithms for real-time estimation and visualization of blood flow velocity. NTNU, Det medisinske fakultet
Doctoral thesis
Wigen, Morten Smedsrud; Løvstakken, Lasse; Fadnes, Solveig; Torp, Hans. (2019) 4D ultrasound vector flow imaging for intraventricular flow assessment. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Pasdeloup, David Francis Pierre; Løvstakken, Lasse; Smistad, Erik; Dalen, Håvard. (2023) Deep Learning in the Echocardiography Workflow: Challenges and Opportunities. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis
Fadnes, Solveig; Løvstakken, Lasse. (2014) Two-Dimensional Blood Velocity Estimation for Intracardiac Flow Assessment. Norges teknisk-naturvitenskapelige universitet
Doctoral thesis

Teaching

Courses

Outreach

2026

Conference poster

Witso, M; Luo, H; Frostelid, V; Selmer, Lisa Marie; Sørensen, Kristian; Fadnes, Solveig; Nyrnes, Siri Ann; Løvstakken, Lasse; Hammersboen, L E; Boe, E. (2026) Changes in the basal-to-apical pressure drop estimated by blood speckle tracking reflect changes in left ventricular diastolic function. EACVI 2025

2025

Other presentation

Løvstakken, Lasse; Karlberg, Anna Maria; Eikenes, Live. (2025) Det integrerte universitetssykehuset - en kjærlighetshistorie. St. Olavs konferansen
Conference lecture

Løvstakken, Lasse. (2025) Hjerteultralyd og annen ultralyd - Et tverrfaglig eventyr. Norsk Cardiologisk Selskap - Høstmøte
Conference lecture

Løvstakken, Lasse. (2025) Artificial intelligence - How can it advance pediatric echocardiography?. Pediatric Brain and Cardiac Ultrasound
Conference poster

Sørensen, Kristian; Fadnes, Solveig; Løvstakken, Lasse; Mertens, Luc; Nyrnes, Siri Ann. (2025) Changes in left ventricular diastolic flow dynamics in the neonatal transition period and beyond. World Congress of Pediatric Cardiology and Cardiac Surgery
Conference lecture

Gundersen, Erlend Løland; Jahren, Tollef; Nyrnes, Siri Ann; Mertens, Luc; Løvstakken, Lasse. (2025) Deep learning for improved blood flow estimation in echocardiography. PRESIMAL Autumn Research School
Conference lecture

Monopoli, Giulia; Wifstad, Sigurd Vangen; Kihldal, Henrik; Sadeghinia, Javad; Sundnes, Joakim; Aabel, Eivind Westrum; Ribe, Margareth; Castrini, Anna Isotta; Hasselberg, Nina Eide; Five, Christian K.. (2025) MRI derived mitral valve and ventricle shape biomarkers for arrhythmic mitral valve syndrome. Computing in Cardiology 2025
Conference poster

Wifstad, Sigurd Vangen; Kildahl, Henrik Agerup; Berg, Erik Andreas Rye; Holte, Espen; Grenne, Bjørnar Leangen; Salvesen, Øyvind Olav; Dalen, Håvard; Løvstakken, Lasse. (2025) EasyPISA: Automated Real Time Assessment of Mitral Regurgitation from Color Flow Imaging. IEEE International Ultrasound Symposium 2025
Conference lecture

Wifstad, Sigurd Vangen; Kildahl, Henrik Agerup; Berg, Erik Andreas Rye; Holte, Espen; Grenne, Bjørnar Leangen; Salvesen, Øyvind Olav; Dalen, Håvard; Løvstakken, Lasse. (2025) Automatic measurements of mitral insufficiency from color flow imaging: complicated or EasyPISA?. The 2025 Artimino Conference on Medical Ultrasound
Conference lecture

Wifstad, Sigurd Vangen; Kildahl, Henrik Agerup; Berg, Erik Andreas Rye; Holte, Espen; Grenne, Bjørnar Leangen; Salvesen, Øyvind Olav; Dalen, Håvard; Løvstakken, Lasse. (2025) Phenotyping mitral valve disease with AI-based measurements. Leuven Meeting on Myocardial Function Imaging 2025
Conference lecture

Gundersen, Erlend Løland; Jahren, Tollef; Nyrnes, Siri Ann; Mertens, Luc; Løvstakken, Lasse. (2025) Deep Learning for Improved Clutter Filtering and Velocity Estimation in Color Flow Imaging. 2025 IEEE International Ultrasonics Symposium
Conference lecture

Gundersen, Erlend Løland; Jahren, Tollef; Løvstakken, Lasse. (2025) Color flow imaging at low packet sizes using deep learning. 2025 Artimino Conference
Conference lecture

Espeland, Torvald; Fadnes, Solveig; Berg, Erik Andreas Rye; Løvstakken, Lasse; Aakhus, Svend; Amundsen, Brage H.. (2025) Mechanical wave velocities in patients with aortic stenosis using 2D High frame rate echocardiography. Myocardial Function Imaging
Conference lecture

Espeland, Torvald; Fadnes, Solveig; Berg, Erik Andreas Rye; Salles, Sebastien Andre Roger; Løvstakken, Lasse; Amundsen, Brage H.; Aakhus, Svend. (2025) Mechanical wave imaging- feasibility and reproducibility “the Trondheim experience”. Myocardial Function Imaging

2024

Lecture

van de Vyver, Gilles; Måsøy, Svein-Erik; Dalen, Håvard; Grenne, Bjørnar Leangen; Holte, Espen; Olaisen, Sindre Hellum; Nyberg, John Anders Tomas; Østvik, Andreas; Løvstakken, Lasse; Smistad, Erik. (2024) Regional quality estimation for echocardiography using deep learning. International Ultrasonics Symposium
Conference poster

van de Vyver, Gilles; Måsøy, Svein-Erik; Dalen, Håvard; Grenne, Bjørnar Leangen; Holte, Espen; Olaisen, Sindre Hellum; Nyberg, John Anders Tomas; Østvik, Andreas; Løvstakken, Lasse; Smistad, Erik. (2024) Regional quality estimation for echocardiography using deep LEARNING. 27th. International Conference On Medical Image Computing and computer Assisted Intervention
Conference poster

Kvalevåg, Magnus Dalen; Måsøy, Svein-Erik; Løvstakken, Lasse. (2024) A web-based, real-time and interactive simulator for understanding emitted ultrasound fields from arbitrary sources. 2024 IEEE UFFC Joint Symposium
Conference lecture

Pasdeloup, David Francis Pierre; Dalen, Håvard; Løvstakken, Lasse; Østvik, Andreas; Olaisen, Sindre Hellum. (2024) Challenges and Opportunities in end-to-end Dep Learning for Echocardiography. Leuven Meeting on Myocardial Function Imaging
Conference poster

Holmstrøm, Vegard; Smistad, Erik; Nyberg, John; Østvik, Andreas; Holte, Espen; Løvstakken, Lasse; Dalen, Håvard; Grenne, Bjørnar Leangen. (2024) Deep Learning for Fully Automated Echocardiographic Measurements of Left Ventricular Wall Thickness and Chamber Dimensions in the Parasternal Long-Axis View. ESC Congress 2024
Conference poster

Tveten, Ingrid; Nyberg, John; Grue, Jahn Frederik; Grenne, Bjørnar; Dalen, Håvard; Løvstakken, Lasse; Østvik, Andreas. (2024) Myocardial contraction patterns in heart failure – opportunities for new diagnostic markers. Autumn Research School in Artificial Intelligence Methods in Medical Imaging 2024
Conference lecture

Holmstrøm, Vegard; Smistad, Erik; Østvik, Andreas; Holte, Espen; Løvstakken, Lasse; Dalen, Håvard; Grenne, Bjørnar Leangen. (2024) Real-Time Analysis of Left Ventricular Global Longitudinal Strain Using Deep Learning. Leuven Meeting on Myocardial Function Imaging 2024
Conference poster

Holmstrøm, Vegard; Smistad, Erik; Stølen, Stian Bergseng; Løvstakken, Lasse; Dalen, Håvard; Holte, Espen; Østvik, Andreas; Grenne, Bjørnar Leangen. (2024) Improving Time-Efficiency and Accuracy in Echocardiography: Real-Time Automated Measurements of Left Ventricular Global Longitudinal Strain using Deep Learning. ESC Congress 2024
Conference poster

Nyberg, John; Østvik, Andreas; Salte, Ivar Mjåland; Olaisen, Sindre Hellum; Karlsen, Sigve; Dahlslett, Thomas; Smistad, Erik; Eriksen-Volnes, Torfinn Kirknes; Brunvand, Harald; Edvardsen, Thor. (2024) Improved reproducibility of regional longitudinal strain in echocardiography by deep learning. ESC Congress 2024
Conference lecture

Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Bøen, Gunn Catrin Fossum; Jakobsen, Even Olav; Langøy, Per Kristian Fahle; Nilsen, Hans Olav; Pasdeloup, David Francis Pierre; Smistad, Erik; Østvik, Andreas; Løvstakken, Lasse. (2024) The effect of deep learning guidance and automated measurements on the reproducibility of left ventricular ejection fraction and global longitudinal strain in breast cancer patients receiving trastuzumab. Kardiologisk Høstmøte
Conference lecture

Wifstad, Sigurd Vangen; Kildahl, Henrik Agerup; Holte, Espen; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Dalen, Håvard; Løvstakken, Lasse. (2024) Automated valve quantification using deep learning. Leuven Meeting on Myocardial Function Imaging 2024
Conference poster

Holmstrøm, Vegard; Smistad, Erik; Østvik, Andreas; Holte, Espen; Stølen, Stian Bergseng; Løvstakken, Lasse; Dalen, Håvard; Grenne, Bjørnar Leangen. (2024) Deep learning in Echocardiography: Real-Time Measurements of Left Ventricular Wall Thickness and Chamber Dimensions in the Parasternal Long-Axis View. EuroEcho-Imaging
Conference poster

Holmstrøm, Vegard; Smistad, Erik; Grue, Jahn Frederik; Løvstakken, Lasse; Stølen, Stian Bergseng; Dalen, Håvard; Holte, Espen; Østvik, Andreas; Grenne, Bjørnar Leangen. (2024) Deep Learning in Echocardiography: Fully Automated B-Mode MAPSE measurements in Real-Time. EuroEcho-Imaging
Conference poster

Witsø, Marit Helene Langset; Sørensen, Kristian; Fadnes, Solveig; Løvstakken, Lasse; Nyrnes, Siri Ann. (2024) Feasibility of non-invasive echocardiographic estimates of intraventricular pressure differences by blood speckle tracking in adults. EuroEcho-Imaging 2024

2023

Conference poster

Bryon, Vincent; Wifstad, Sigurd Vangen; Hu, Jieyu; Grønli, Thomas; Løvstakken, Lasse. (2023) Automated Patient-Specific Left Ventricular Simulations for Cardiac Function Evaluation Using Image-Based Computational Fluid Dynamics and Color Flow Imaging. International Ultrasonics Symposium 2023
Conference lecture

Wifstad, Sigurd Vangen; Indimath, Shivanandan; Bryon, Vincent; Avdal, Jørgen; Løvstakken, Lasse; Måsøy, Svein-Erik; Fiorentini, Stefano. (2023) Can we use Deep Learning to extract important information from poor resolution Doppler images?. The 2023 Artimino Conference on Medical Ultrasound Technology
Lecture

Hu, Jieyu; Løvstakken, Lasse. (2023) Data mining for improved echocardiography using deep learning. The Artimino conference on Medical Ultrasound Technology
Conference lecture

Bryon, Vincent; Wifstad, Sigurd Vangen; Hu, Jieyu; Grønli, Thomas; Løvstakken, Lasse. (2023) Simulating Blood Flow in the Heart: Enhancing Color Flow Imaging with Computational Fluid Dynamics. The 2023 Artimino Conference on Medical Ultrasound Technology
Conference poster

Wifstad, Sigurd Vangen; Kildahl, Henrik Agerup; Holte, Espen; Grenne, Bjørnar Leangen; Dalen, Håvard; Løvstakken, Lasse. (2023) Automatic Jet Flow Convergence Detection and Quantification from 2D Color Doppler Flow Using Deep Learning. International Ultrasonics Symposium 2023
Conference lecture

Pettersen, Håkon Neergaard; Sæbø, Sigbjørn; Smistad, Erik; Pasdeloup, David Francis Pierre; Stølen, Stian Bergseng; Grenne, Bjørnar Leangen; Løvstakken, Lasse; Dalen, Håvard; Holte, Espen. (2023) Real-time guiding by deep learning during echocardiography to reduce left ventricular foreshortening and measurement variability. Meeting on Myocardial Function Imaging
Conference poster

van de Vyver, Gilles; Thomas, Sarina; Ben-Yosef, Guy; Olaisen, Sindre Hellum; Dalen, Håvard; Løvstakken, Lasse. (2023) Towards Robust Cardiac Segmentation using Graph Convolutional Networks. Nordic Probabilistic AI School (ProbAI)
Conference poster

Mawad, Wadi; Henry, Matthew; Sørensen, Kristian; Fadnes, Solveig; Løvstakken, Lasse; Mertens, Luc; Nyrnes, Siri Ann. (2023) Intracardiac Flow Dynamics In Children With Single Ventricle Physiology Demonstrated By High-frame-rate Cardiac Ultrasound And Blood SpeckleTracking. 8th World Congress of Pediatric Cardiology and Cardiac Surgery
Conference poster

Henry, Matthew; Fadnes, Solveig; Sørensen, Kristian; Mawad, Wadi; Løvstakken, Lasse; Mertens, Luc; Nyrnes, Siri Ann. (2023) Evaluation Of Right Ventricular Diastolic Flow In Children With Congenital Heart Diseases Using Blood Speckle Tracking. 8th World Congress of Pediatric Cardiology and Cardiac Surgery
Conference poster

Nyberg, John; Jakobsen, Even Olav; Østvik, Andreas; Holte, Espen; Stølen, Stian; Løvstakken, Lasse; Grenne, Bjørnar Leangen; Dalen, Håvard. (2023) Determinants of left atrial reservoir strain in a large healthy population. EACVI 2023
Conference poster

Nyberg, John; Jakobsen, Even Olav; Østvik, Andreas; Holte, Espen; Stølen, Stian; Løvstakken, Lasse; Grenne, Bjørnar Leangen; Dalen, Håvard. (2023) Left atrial strain in a large healthy population. Nordic Cardiac Imaging
Conference lecture

Tveten, Ingrid Elisabeth; Nyberg, John; Grue, Jahn Frederik; Dalen, Håvard; Løvstakken, Lasse; Grenne, Bjørnar Leangen; Østvik, Andreas. (2023) Deep Learning-Based Functional Measurements from Parasternal Short-Axis in Echocardiography are Related to Hypertension and Left Ventricle Ejection Fraction. Autumn Research School in Artificial Intelligence Methods in Medical Imaging 2023
Conference lecture

Grønli, Thomas; Løvstakken, Lasse; Nyrnes, Siri Ann; Fadnes, Solveig. (2023) 4D Cardiac Vector Flow Imaging from Triplane Color Doppler and Dynamic Model-Based Regularization. 2023 IEEE International Ultrasonics Symposium
Conference lecture

Sørensen, Kristian; Fadnes, Solveig; Flade, Hans-Martin; Kirkeby-Garstad, Idar; Østvik, Andreas; Henry, Matthew; Mawad, Wadi; Mertens, Luc; Løvstakken, Lasse; Nyrnes, Siri Ann. (2023) Assessment of Diastolic Suction by Blood Speckle Tracking; Invasive Validation and Clinical Application. 8th World Congress of Pediatric Cardiology and Cardiac Surgery
Conference poster

Sørensen, Kristian; Fadnes, Solveig; Flade, Hans-Martin; Kirkeby-Garstad, Idar; Østvik, Andreas; Henry, Matthew; Mawad, Wadi; Mertens, Luc; Løvstakken, Lasse; Nyrnes, Siri Ann. (2023) Assessment of Diastolic Suction by Blood Speckle Tracking; Invasive Validation and Clinical Application. 8th World Congress of Pediatric Cardiology and Cardiac Surgery
Conference lecture

Holmstrøm, Vegard; Smistad, Erik; Nyberg, John; Østvik, Andreas; Holte, Espen; Løvstakken, Lasse; Dalen, Håvard; Grenne, Bjørnar Leangen. (2023) Deep Learning for Automated Analyses in the PLAX View. Norsk Cardiologisk Selskap Kardiologisk høstmøte 2023
Conference lecture

Pettersen, Håkon Neergaard; Sæbø, Sigbjørn; Pasdeloup, David Francis Pierre; Smistad, Erik; Østvik, Andreas; Olaisen, Sindre Hellum; Bøen, Gunn Catrin Fossum; Jakobsen, Even Olav; Langøy, Per Kristian; Stølen, Stian Bergseng. (2023) The Impact of Real-time Guiding by Deep Learning on Inter-operator Variability of Left Ventricular Function Measurements. Høstmøte, Norsk Cardiologisk Selskap
Conference poster

Pettersen, Håkon Neergaard; Sæbø, Sigbjørn; Pasdeloup, David Francis Pierre; Olaisen, Sindre Hellum; Østvik, Andreas; Bøen, Gunn Catrin Fossum; Langøy, Per Kristian Fahle; Jakobsen, Even Olav; Smistad, Erik; Stølen, Stian Bergseng. (2023) The impact of real-time guiding by deep learning on test-retest variability of automated left ventricular systolic function measurements. EACVI
Conference lecture

Pasdeloup, David Francis Pierre; Østvik, Andreas; Olaisen, Sindre Hellum; Skogvoll, Eirik; Dalen, Håvard; Løvstakken, Lasse. (2023) Automated measurements with AI: the gap between proof-of-concept and clinical use. Artimino Ultrasound Conference
Conference poster

Mawad, Wadi; Nyrnes, Siri Ann; Fadnes, Solveig; Løvstakken, Lasse; Sørensen, Kristian; Mertens, Luc; Henry, Matthew. (2023) Intracardiac Flow Dynamics In Children With Single Ventricle Physiology Demonstrated By High-frame-rate Cardiac Ultrasound And Blood Speckle Tracking. 8TH World Congress of Pediatric Cardiology and Cardiac Surgery
Lecture

Fiorentini, Stefano; Mohajery, Mohammad; Løvstakken, Lasse; Salles, Sebastien Andre Roger. (2023) Detection of Natural Mechanical Waves in the Heart Using Directional Clutter Filter Wave Imaging (DCFWI). 2023 IEEE International Ultrasonics Symposium
Lecture

Hu, Jieyu; Smistad, Erik; Grenne, Bjørnar Leangen; Holte, Espen; Dalen, Håvard; Løvstakken, Lasse. (2023) Left-Ventricular Volume Estimation in Contrast-Enhanced Echocardiography Using Deep Learning. 2023 IEEE International Ultrasonics Symposium (IUS)
Conference poster

Kvalevåg, Magnus; Vrålstad, Anders Emil; Rindal, Ole Marius Hoel; Bjåstad, Tore Grüner; Dénarié, Bastien; Kristoffersen, Kjell; Måsøy, Svein-Erik; Løvstakken, Lasse. (2023) vbeam: A Fast and Differentiable Beamformer for Optimizing Ultrasound Imaging. IEEE International Ultrasonics Symposium
Conference poster

Henry, Matthew; Fadnes, Solveig; Sørensen, Kristian; Løvstakken, Lasse; Nyrnes, Siri Ann; Mertens, Luc. (2023) Evaluation of natural mechanical wave velocities in children with pulmonary arterial hypertension. AEPC 2023
Conference poster

Henry, Matthew; Fadnes, Solveig; Sørensen, Kristian; Løvstakken, Lasse; Mertens, Luc; Nyrnes, Siri Ann. (2023) Evaluation of left ventricular diastolic flow dynamics in children with pulmonary arterial hypertension using blood speckle tracking. AEPC 2023
Conference poster

Olaisen, Sindre Hellum; Espeland, Torvald; Smistad, Erik; Hu, Jieyu; Pasdeloup, David Francis Pierre; Østvik, Andreas; Amundsen, Brage H.; Aakhus, Svend; Rösner, Assami; Stylidis, Michael. (2023) Automatic measurements of left ventricular volumes and ejection fraction by artificial intelligence reduces time-consumption and inter-observer variability. EACVI
Lecture

van de Vyver, Gilles; Smistad, Erik; Løvstakken, Lasse; Olaisen, Sindre Hellum; Dalen, Håvard; Thomas, Sarina; Ben-Yosef, Guy. (2023) Towards Robust Cardiac Segmentation using Graph Convolutional Networks. International ultrasonics symposium 2023
Conference poster

Chernyshov, Artem; Grue, Jahn Frederik; Nyberg, John; Østvik, Andreas; van de Vyver, Gilles; Smistad, Erik; Løvstakken, Lasse. (2023) Automated segmentation and quantification of the right ventricle in 2D echocardiography. IEEE International Ultrasonics Symposium 2023
Conference lecture

Yari, Yasin; Løvstakken, Lasse; Måsøy, Svein-Erik; Næve, Ingun; Bergtun, Per Helge; Voormolen, Marco Marien; Hammerdal, Asle. (2023) Ultrasound and Deep Learning for Automated Egg Maturation Prediction of Atlantic Salmon. IUS 2023

2022

Conference lecture

Hu, Jieyu; Smistad, Erik; Salte, Ivar Mjåland; Dalen, Håvard; Løvstakken, Lasse. (2022) Exploiting temporal information in echocardiography for improved image segmentation. IEEE IUS 2022 lecture presentation
Conference lecture

Mohajery, Mohammad; Espeland, Torvald; Berg, Erik Andreas Rye; Fadnes, Solveig; Salles, Sebastien; Amundsen, Brage H.; Aakhus, Svend; Løvstakken, Lasse. (2022) 3D mechanical wave imaging – initial analysis and insight. Leuven online meeting on myocardial function imaging
Conference poster

Smistad, Erik; Dalen, Håvard; Grenne, Bjørnar; Løvstakken, Lasse. (2022) Segmentation of parasternal long axis views using deep learning. IEEE International Ultrasonics Symposium 2022
Conference lecture

Wifstad, Sigurd Vangen; Hauge, Ståle Wågen; Seljelv, Sigvard Johansen; Sæbø, Sigbjørn; Mekonnen, Desalew; Nega, Berhanu; Abebe, Sintayehu; Estensen, Mette-Elise; Haaverstad, Rune; Dalen, Håvard. (2022) Tracking heart valve motion from transthoracic echocardiography using deep learning. Autumn Research School in Artificial Intelligence Methods in Medical Imaging 2022
Conference lecture

Smistad, Erik; Østvik, Andreas; Grue, Jahn Frederik; Dalen, Håvard; Løvstakken, Lasse. (2022) Tracking-based mitral annular plane systolic excursion (MAPSE) measurement using deep learning in B-mode ultrasound. IEEE International Ultrasonics Symposium 2022
Conference poster

Chernyshov, Artem; Østvik, Andreas; Smistad, Erik; Løvstakken, Lasse. (2022) Segmentation of 2D cardiac ultrasound with deep learning: simpler models for a simple task. IEEE IUS 2022
Conference lecture

Yari, Yasin; Løvstakken, Lasse; Måsøy, Svein-Erik; Næve, Ingun; Bergtun, Per Helge; Voormolen, Marco Marien. (2022) Ultrasound and Deep Learning for Automated Maturation Prediction of Atlantic Salmon. IUS 2022
Conference lecture

Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Østvik, Andreas; Pasdeloup, David Francis Pierre; Smistad, Erik; Stølen, Stian Bergseng; Grenne, Bjørnar; Løvstakken, Lasse; Holte, Espen; Dalen, Håvard. (2022) Automated analyses and real-time guiding by deep learning to reduce test-retest variability of global longitudinal strain. ESC 2022
Conference lecture

Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Østvik, Andreas; Smistad, Erik; Pasdeloup, David Francis Pierre; Grenne, Bjørnar; Stølen, Stian Bergseng; Løvstakken, Lasse; Holte, Espen; Dalen, Håvard. (2022) Automated analyses and real-time guiding by deep learning to reduce variability of global longitudinal strain. CIUS Fall Conference 2022
Conference lecture

Wifstad, Sigurd Vangen; Hauge, Ståle Wågen; Seljelv, Sigvard Johansen; Sæbø, Sigbjørn; Mekonnen, Desalew; Nega, Berhanu; Abebe, Sintayehu; Estensen, Mette-Elise; Haaverstad, Rune; Dalen, Håvard. (2022) Tracking heart valve motion from transthoracic echocardiography using deep learning. IEEE International Ultrasonics Symposium (IUS)
Conference lecture

Olaisen, Sindre Hellum; Smistad, Erik; Østvik, Andreas; Hu, Jieyu; Pasdeloup, David Francis Pierre; Stylidis, Michael; Rosner, Assami; Grenne, Bjørnar; Holte, Espen; Løvstakken, Lasse. (2022) Automatic calculation of left ventricular ejection fraction using artificial intelligence. Kardiologisk høstmøte 2022
Conference lecture

Olaisen, Sindre Hellum; Smistad, Erik; Grenne, Bjørnar; Holte, Espen; Løvstakken, Lasse; Dalen, Håvard. (2022) Real-time AI-assisted calculation of left ventricular ejection fraction in echocardiography. 20th Annual Norwegian Symposium on Heart Research
Lecture

Løvstakken, Lasse. (2022) Automatiserte målinger - hvordan gjør maskinen det?. Norsk Cardiologisk Selskap (NCS) høstmøte
Conference lecture

Mohajery, Mohammad; Fadnes, Solveig; Espeland, Torvald; Salles, Sebastien; Løvstakken, Lasse. (2022) Three-dimensional velocity estimation of natural mechanical waves in the myocardium. International ultrasonics symposium
Conference poster

Fermann, Benjamin Strandli; Aase, Svein Arne; Nyberg, John; Grue, Jahn Frederik; Grenne, Bjørnar; Dalen, Håvard; Remme, Espen; Løvstakken, Lasse; Østvik, Andreas. (2022) Cardiac event detection in echocardiography using deep learning and triplane recordings. IEEE 2022 International Ultrasonics Symposium (IUS)
Conference poster

Pasdeloup, David Francis Pierre; Sæbø, Sigbjørn; Olaisen, Sindre Hellum; Pettersen, Håkon Neergaard; Østvik, Andreas; Holte, Espen; Grenne, Bjørnar; Stølen, Stian Bergseng; Smistad, Erik; Dalen, Håvard. (2022) Real-Time Echocardiography Guidance for Optimized Apical Standard Views. PRESIMAL Autumn Research School
Conference poster

Pasdeloup, David Francis Pierre; Sæbø, Sigbjørn; Olaisen, Sindre Hellum; Pettersen, Håkon Neergaard; Østvik, Andreas; Holte, Espen; Grenne, Bjørnar; Stølen, Stian Bergseng; Smistad, Erik; Dalen, Håvard. (2022) Real-Time Echocardiography Guidance for Optimized Apical Standard Views. IEEE International Ultrasound Symposium
Conference lecture

Garone, Rosa Virginia; Lønmo, Tor Inge Birkenes; Tichy, Frank; Diesing, Markus; Thorsnes, Terje; Schimel, Alexandre Carmelo Gregory; Løvstakken, Lasse. (2022) Deep Learning for seafloor sediment mapping: a preliminary investigation using U-Net. Geohab 2022, Marine Geological & Biological Mapping
Conference lecture

Szerypo Magelssen, Malgorzata Izabela; Hjorth-Hansen, Anna; Andersen, Garrett Newton; Graven, Torbjørn; Kleinau, Olaf; Skjetne, Kyrre; Løvstakken, Lasse; Dalen, Håvard; Mjølstad, Ole Christian. (2022) The importance of patient characteristics, operators, and image quality for accurate diagnoses of heart failure by general practitioners using hand-held ultrasound. European Heart Congress

2021

Conference lecture

Smistad, Erik; Salte, Ivar Mjåland; Dalen, Håvard; LÃ¸vstakken, Lasse. (2021) Real-time temporal coherent left ventricle segmentation using convolutional LSTMs. IEEE International Ultrasonics Symposium
Conference lecture

Smistad, Erik; Steinsland, Erik Nikolai; LÃ¸vstakken, Lasse. (2021) Real-time 3D left ventricle segmentation and ejection fraction using deep learning. IEEE International Ultrasonics Symposium
Conference lecture

Smistad, Erik; Ãstvik, Andreas; LÃ¸vstakken, Lasse. (2021) Annotation Web - An open-source web-based annotation tool for ultrasound images. IEEE International Ultrasonics Symposium
Conference poster

Hu, Jieyu; Olaisen, Sindre Hellum; Smistad, Erik; Dalen, Håvard; LÃ¸vstakken, Lasse. (2021) Fully automated left atrium quantification using deep learning. IEEE IUS 2021
Conference poster

Mohajery, Mohammad; Wigen, Morten Smedsrud; Fadnes, Solveig; Pasdeloup, David Francis Pierre; Smistad, Erik; Espeland, Torvald; Salles, Sebastien; Løvstakken, Lasse. (2021) The variation of natural myocardial mechanical wave velocities due to 3D propagation. International Ultrasonics Symposium
Conference poster

Wifstad, Sigurd Vangen; Løvstakken, Lasse; Avdal, Jørgen; Torp, Hans; Fiorentini, Stefano. (2021) Automatic quantification of valvular insufficiency using 3D Doppler imaging and deep learning. Probabilistic AI summer school
Conference lecture

Wifstad, Sigurd Vangen; Løvstakken, Lasse; Avdal, Jørgen; Torp, Hans; Fiorentini, Stefano. (2021) Automatic quantification of valve insufficiency using 3D Doppler ultrasound and deep learning. CIUS conference
Conference poster

Wifstad, Sigurd Vangen; Løvstakken, Lasse; Avdal, Jørgen; Torp, Hans; Fiorentini, Stefano. (2021) Automatic quantification of valvular insufficiency using 3D Doppler imaging and Deep Learning. International Ultrasonics Symposium 2021
Conference lecture

Pettersen, Håkon Neergaard; Sæbø, Sigbjørn; Pasdeloup, David Francis Pierre; Østvik, Andreas; Smistad, Erik; Stølen, Stian Bergseng; Grenne, Bjørnar; Løvstakken, Lasse; Dalen, Håvard; Holte, Espen. (2021) The impact of real-time feedback by deep learning during echocardiography on test-retest variability of left ventricular systolic function measurements. EuroEcho 2021
Conference lecture

Pettersen, Håkon Neergaard; Sæbø, Sigbjørn; Pasdeloup, David Francis Pierre; Østvik, Andreas; Smistad, Erik; Stølen, Stian Bergseng; Grenne, Bjørnar; Løvstakken, Lasse; Dalen, Håvard; Holte, Espen. (2021) Impact of real-time feedback by deep learning during echocardiography on test-retest variability of left ventricular systolic function measurements. CIUS Fall Conference 2021
Conference lecture

Espeland, Torvald; Wigen, Morten Smedsrud; Berg, Erik Andreas Rye; Salles, Sebastien; Løvstakken, Lasse; Amundsen, Brage H.; Aakhus, Svend. (2021) Mechanical wave velocities by high frame rate imaging in healthy subjects. MEETING ON MYOCARDIAL FUNCTION IMAGING
Conference poster

Pasdeloup, David Francis Pierre; Olaisen, Sindre Hellum; Ãstvik, Andreas; Holte, Espen; Grenne, Bjørnar; Sæbo, Sigbjørn; Smistad, Erik; Dalen, Håvard; LÃ¸vstakken, Lasse. (2021) Real-time Image Guiding in Echocardiography using Deep Learning. International Ultrasound Symposium
Conference lecture

Grønli, Thomas; Wigen, Morten Smedsrud; Daae, Annichen Søyland; Segers, Patrick; Støylen, Asbjørn; Løvstakken, Lasse; Fadnes, Solveig. (2021) Model-Based Regularization for Non-Invasive Intraventricular Flow and Pressure Estimates in 4D Ultrasound Imaging. International Ultrasonics Symposium
Conference lecture

Pettersen, Håkon Neergaard; Sæbø, Sigbjørn; Pasdeloup, David Francis Pierre; Østvik, Andreas Raae; Smistad, Erik; Stølen, Stian Bergseng; Grenne, Bjørnar; Løvstakken, Lasse; Dalen, Håvard; Holte, Espen. (2021) Impact of real-time feedback by deep learning during echocardiography on test-retest variability of left ventricular systolic function measurements. Høstmøte, Norsk Cardiologisk Selskap
Conference poster

Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Pasdeloup, David Francis Pierre; Smistad, Erik; Stølen, Stian Bergseng; Grenne, Bjørnar; Løvstakken, Lasse; Holte, Espen; Dalen, Håvard. (2021) Real-time automatic feedback by deep learning to reduce apical foreshortening in echocardiography. EuroEcho 2021
Conference lecture

Viggen, Erlend Magnus; Løvstakken, Lasse; Merciu, Ioan Alexandru; Måsøy, Svein-Erik. (2021) Better Automatic Interpretation of Cement Evaluation Logs through Feature Engineering. SPE/IADC Virtual International Drilling Conference and Exhibition
Conference poster

Sørensen, Kristian; Fadnes, Solveig; Salvesen, Øyvind; Mertens, Luc; Løvstakken, Lasse; Nyrnes, Siri Ann. (2021) Assessment of Regional Early Diastolic Intraventricular Pressure Gradients by Blood Speckle Tracking in Children. ASE 2021

2020

Conference lecture

Grønli, Thomas; Wigen, Morten Smedsrud; Eriksen, Marius; Stensæth, Knut Haakon; Løvstakken, Lasse. (2020) A Fully Automated Ultrasound Imaging Pipeline for 4D Intraventricular Flow Reconstruction - in Vivo Comparison to Phase-Contrast MRI. 2020 IEEE International Ultrasonics Symposium
Conference poster

Sørensen, Kristian; Fadnes, Solveig; Wigen, Morten Smedsrud; Salvesen, Øyvind; Mertens, Luc; Løvstakken, Lasse; Nyrnes, Siri Ann. (2020) Assessment of Diastolic Intraventricular Pressure Gradients in Children by Blood Speckle Tracking. A Feasibility Study. ASE 2020 Virtual Experience
Conference poster

Mawad, Wadi; Fadnes, Solveig; Grønli, Thomas; Løvstakken, Lasse; Mertens, Luc; Nyrnes, Siri Ann. (2020) Children with Pulmonary Hypertension Have Abnormal Flow patterns in the Main Pulmonary Artery as Shown By High Frame Rate Ultrasound Imaging. ASE 2020
Conference lecture

Grønli, Thomas; Leinan, Paul Roger; Wigen, Morten Smedsrud; Skjetne, Paal; Nyrnes, Siri Ann; Dahl, Sigrid Kaarstad; Løvstakken, Lasse. (2020) Flow regularization and reconstruction in echocardiography. Meeting on Myocardial Function Imaging
Conference lecture

Henry, Matthew; Fadnes, Solveig; Løvstakken, Lasse; Mawad, Wadi; Mertens, Luc; Nyrnes, Siri Ann. (2020) Bicuspid aortic valve assessment using blood speckle tracking in children. EACVI Best of Imaging 2020
Conference lecture

Wigen, Morten Smedsrud; Fiorentini, Stefano; Støylen, Asbjørn; Løvstakken, Lasse. (2020) Aortic volume flow estimation using 4D vector flow imaging. 2020 IEEE International Ultrasonics Symposium
Conference lecture

Salles, Sebastien; Fadnes, Solveig; Nyrnes, Siri Ann; Løvstakken, Lasse. (2020) High-frame-rate imaging of cardiac tissue-flow interaction: Towards the origin of the atrial kick wave. IEEE International Ultrasonics Symposium 2020
Conference poster

Fadnes, Solveig; Sørensen, Kristian; Nyrnes, Siri Ann; Wigen, Morten Smedsrud; Løvstakken, Lasse. (2020) Intranventricular Pressure Gradients - Vector Flow Imaging versus Color M-Mode. IEEE International Ultrasonics Symposium 2020
Conference lecture

Espeland, Torvald; Salles, Sebastien; Støylen, Asbjørn; Berg, Erik Andreas Rye; Hammer, Tommy; Amundsen, Brage H.; Aakhus, Svend; Løvstakken, Lasse; Torp, Hans. (2020) Measuring myocardial mechanical wave velocities using 3D – initial clinical results. MEETING ON MYOCARDIAL FUNCTION IMAGING
Conference poster

Pasdeloup, David Francis Pierre; Østvik, Andreas; Smistad, Erik; Løvstakken, Lasse; Dalen, Håvard; Olaisen, Sindre Hellum; Grønli, Thomas. (2020) Automatic Apical Standard Views extraction from 3D ultrasound volumes using Deep Learning. Virtual IEEE IUS Symposium
Conference lecture

Løvstakken, Lasse. (2020) Simplifying echocardiography - opportunities and challenges. MICCAI ASMUS workshop

2019

Conference lecture

Torp, Hans; Løvstakken, Lasse. (2019) Super‐resolution power-Doppler imaging. IEEE International Ultrasonic Symposium
Conference lecture

Løvstakken, Lasse; Østvik, Andreas; Smistad, Erik. (2019) Kunstig intelligens for en mer effektiv og treffsikker ekkokardiografi. Kardiologisk høstmøte
Conference lecture

Leclerc, Sarah; Smistad, Erik; Grenier, Thomas; Lartizien, Carole; Østvik, Andreas; Cervenansky, Frederic; Espinosa, Florian; Espeland, Torvald; Berg, Erik Andreas Rye; Jodoin, Pierre-Marc. (2019) RU-Net: A Refining Segmentation Network for 2D Echocardiography. IEEE International Ultrasonics Symposium (IUS)
Lecture

Løvstakken, Lasse; Måsøy, Svein-Erik; Søraunet, Arild; Nyrnes, Siri Ann; Rau, Jochen; Njølstad, Tormod; Martinussen, Hanne. (2019) "Ultralydhovedstaden" (Innovasjonsfrokost). Populærvitenskapelig frokostseminar med påmelding
Conference lecture

Østvik, Andreas; Smistad, Erik; Løvstakken, Lasse. (2019) Machine learning in Echocardiography. Cardiac Imaging Day
Conference poster

Østvik, Andreas; Salte, Ivar Mjåland; Smistad, Erik; Løvstakken, Lasse. (2019) Adapting deep learning based motion estimation for myocardial function imaging. IEEE International Ultrasonics Symposium (IUS)
Conference lecture

Daae, Annichen Søyland; Wigen, Morten Smedsrud; Løvstakken, Lasse; Støylen, Asbjørn. (2019) Vortex formation during the isovolumetric contraction in the left ventricle. Euro Echo
Conference lecture

Grønli, Thomas; Leinan, Paul Roger; Wigen, Morten Smedsrud; Skjetne, Paal; Dahl, Sigrid Kaarstad; Løvstakken, Lasse. (2019) In vitro validation of ultrasound VFI regularization through rapid data assimilation. 2019 IEEE International Ultrasonics Symposium
Conference lecture

Wigen, Morten Smedsrud; Daae, Annichen Søyland; Grønli, Thomas; Støylen, Asbjørn; Løvstakken, Lasse. (2019) A single recording for quantitative echocardiography - Simultaneous tissue and flow measurements. Myocardial function imaging
Conference lecture

Alessandro, Ramalli; Rodriguez-Molares, Alfonso; Avdal, Jørgen; D'Hooge, Jan R M; Løvstakken, Lasse. (2019) The effect of high frame rate imaging methods in clinical color flow echocardiography. IEEE International Ultrasonics symposium
Conference lecture

Løvstakken, Lasse; Østvik, Andreas; Smistad, Erik. (2019) Deep learning for automated anatomical and deformation measurements in echocardiography. Annual congress of the Belgian working group on non-invasive cardiac imaging
Conference lecture

Pasdeloup, David Francis Pierre; Østvik, Andreas; Smistad, Erik; Løvstakken, Lasse. (2019) Retraining strategies for improved generalization of deep neural networks. IEEE International Ultrasonics symposium
Conference lecture

Løvstakken, Lasse; Østvik, Andreas; Smistad, Erik. (2019) Deep learning for automated anatomical and deformation measurements in echocardiography. Leuven Meeting on Myocardial Function Imaging
Conference lecture

Løvstakken, Lasse; Østvik, Andreas; Smistad, Erik. (2019) Machine learning for improved echocardiography. The Artimino Conference on Medical Ultrasound Technology
Conference lecture

Leclerc, Sarah; Smistad, Erik; Østvik, Andreas; Cervenansky, Frederic; Espinosa, Florian; Espeland, Torvald; Berg, Erik Andreas Rye; Jodoin, Pierre-Marc; Grenier, Thomas; Lartizien, Carole. (2019) Deep Learning Segmentation in 2D echocardiography using the CAMUS dataset : Automatic Assessment of the Anatomical Shape Validity. International Conference on Medical Imaging with Deep Learning
Conference lecture

Salles, Sebastien; Løvstakken, Lasse; Espeland, Torvald; Wigen, Morten Smedsrud; Fadnes, Solveig; Støylen, Asbjørn; Torp, Hans. (2019) 3D mechanical wave trajectory mapping in the left ventricle using Clutter Filter Wave Imaging. 2019 IEEE International Ultrasonics Symposium
Conference lecture

Grønli, Thomas; Leinan, Paul Roger; Wigen, Morten Smedsrud; Skjetne, Paal; Dahl, Sigrid Kaarstad; Løvstakken, Lasse. (2019) Variational Data Assimilation - Towards Robust Vector Flow Estimation with Ultrasound. Cardiac Imaging Day 2019
Conference lecture

Smistad, Erik; Salte, Ivar Mjåland; Østvik, Andreas; Leclerc, Sarah; Bernard, Olivier; Løvstakken, Lasse. (2019) Segmentation of apical long axis, four- and two-chamber views using deep neural networks. IEEE International Ultrasonics Symposium (IUS)

2018

Conference poster

Grønli, Thomas; Wigen, Morten Smedsrud; Segers, Patrick; Løvstakken, Lasse. (2018) A fast 4D B-spline framework for model-based reconstruction and regularization in vector flow imaging. IEEE International Ultrasonics Symposium 2018
Conference lecture

Grønli, Thomas; Wigen, Morten Smedsrud; Segers, Patrick; Løvstakken, Lasse. (2018) A fast 4D B-spline framework for model-based reconstruction and regularization in vector flow imaging. IEEE International Ultrasonics Symposium 2018
Conference poster

Østvik, Andreas; Smistad, Erik; Espeland, Torvald; Berg, Erik Andreas Rye; Løvstakken, Lasse. (2018) Automatic Myocardial Strain Imaging in Echocardiography Using Deep Learning. MICCAI 2018, 4th Workshop on Deep Learning in Medical Image Analysis (DLMIA)
Lecture

Mawad, Wadi; Nyrnes, Siri Ann; Fadnes, Solveig; Grønli, Thomas; Mertens, Luc; Løvstakken, Lasse. (2018) cardiac flow dynamics by echocardiography: current and future perspectives. American Society of Echocardiography
Conference poster

Sælensminde, Magnus; Grønli, Thomas; Segers, Patrick; Nyrnes, Siri Ann; Løvstakken, Lasse. (2018) Intraventricular blood velocity measurements - a comparison between iVFM and blood speckle tracking. IEEE International Ultrasonics Symposium 2018
Conference lecture

Smistad, Erik; Østvik, Andreas; Salte, Ivar Mjåland; Leclerc, Sarah; Bernard, Olivier; Løvstakken, Lasse. (2018) Fully automatic real-time ejection fraction and MAPSE measurements in 2D echocardiography using deep neural networks. IEEE International Ultrasonics Symposium 2018
Conference lecture

Dietrichson, Fabian Sødal; Smistad, Erik; Østvik, Andreas; Løvstakken, Lasse. (2018) Ultrasound speckle reduction using generative adversial networks. IEEE International Ultrasonics Symposium 2018
Conference lecture

Østvik, Andreas; Smistad, Erik; Løvstakken, Lasse. (2018) Deep learning for ultrasound image classification and segmentation. Myocardial velocity and deformation imaging
Conference lecture

Østvik, Andreas; Smistad, Erik; Espeland, Torvald; Berg, Erik Andreas Rye; Løvstakken, Lasse. (2018) Automatic functional imaging in echocardiography using deep learning based segmentation and flow estimation. IEEE International Ultrasonics Symposium 2018
Conference lecture

Løvstakken, Lasse; Østvik, Andreas; Smistad, Erik. (2018) Machine learning in echocardiography, can we trust it?. EuroEcho
Conference poster

Fiorito, Adrian Meidell; Østvik, Andreas; Smistad, Erik; Leclerc, Sarah; Bernard, Olivier; Løvstakken, Lasse. (2018) Detection of Cardiac Events in Echocardiography using 3D Convolutional Recurrent Neural Networks. IEEE International Ultrasonics Symposium 2018
Interview

Næss, Hans Jørn; Løvstakken, Lasse. (2018) Kunstig intelligens utfordrer legene: Best til å tolke røntgenbildene.
Lecture

Salles, Sebastien; Løvstakken, Lasse; Espeland, Torvald; Rodriguez-Molares, Alfonso; Aase, Svein Arne; Støylen, Asbjørn; Torp, Hans. (2018) 4D mechanical wave velocity mapping using clutter filter wave imaging. Healthy Subjects versus patients. IEEE IUS 2018
Conference lecture

Wigen, Morten Smedsrud; Salles, Sebastien; Støylen, Asbjørn; Løvstakken, Lasse. (2018) The continuous cardiac thick-slice acquisition - for simultaneous flow and tissue motion estimation. IEEE International Ultrasonics Symposium
Conference lecture

Løvstakken, Lasse. (2018) Next generation echocardiography - opportunities and challenges. IEEE International Ultrasonics Symposium
Conference lecture

Karabiyik, Yücel; Avdal, Jørgen; Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2018) Limiting spectral broadening in Pulsed Wave Doppler. Scandinavian Symposium on Physical Acoustics
Conference poster

Daae, Annichen Søyland; Støylen, Asbjørn; Løvstakken, Lasse; Wigen, Morten Smedsrud. (2018) Initial diastolic vortex formation in the left ventricle relates to the atrioventricular plane motion of the outflow tract. Euro Echo 2018
Conference poster

Leclerc, Sarah; Smistad, Erik; Grenier, Thomas; Lartizien, Carole; Østvik, Andreas; Espinosa, Florian; Jodoin, Pierre-Marc; Løvstakken, Lasse; Bernard, Olivier. (2018) Deep learning applied to multi-structure segmentation in 2D echocardiography: A preliminary investigation of the required database size. IEEE International Ultrasonics Symposium 2018
Conference poster

Perrot, Vincent; Avdal, Jørgen; Løvstakken, Lasse; Salles, Sebastien; Vray, Didier; Liebgott, Herve; Ekroll, Ingvild Kinn. (2018) Spatial and Temporal Adaptive FIR Clutter Filtering. IEEE International Ultrasonics symposium 2018
Conference lecture

Fadnes, Solveig; Salles, Sebastien; Tegnander, Eva; Nyrnes, Siri Ann; Løvstakken, Lasse. (2018) In vivo estimation of myocardial mechanical wave propagation in the fetus. IEEE International Ultrasonics Symposium
Conference lecture

Nyrnes, Siri Ann; Fadnes, Solveig; Salles, Sebastien; Løvstakken, Lasse. (2018) High Frame Rate Imaging. 29th Annual ASE Scientific Sessions

2017

Conference lecture

Wigen, Morten Smedsrud; Rodriguez-Molares, Alfonso; Bjåstad, Tore Grüner; Eriksen, Marius; Stensæth, KNUT HAAKON; Løvstakken, Lasse. (2017) In-Vivo 3D Cardiac Vector Flow Imaging – a Comparison Between Ultrasound and Phase-Contrast MRI. 2017 IEEE International Ultrasonics Symposium
Conference lecture

Wigen, Morten Smedsrud; Løvstakken, Lasse. (2017) 4D cardiac vector flow imaging. The Artimino Conference on Medical Ultrasound Technology
Conference lecture

Fadnes, Solveig; Tegnander, Eva; Nyrnes, Siri Ann; Løvstakken, Lasse. (2017) Vector flow imaging of fetal circulation using diverging waves. 2017 IEEE International Ultrasonics Symposium
Conference lecture

Fadnes, Solveig; Tegnander, Eva; Nyrnes, Siri Ann; Løvstakken, Lasse. (2017) Vector flow imaging of fetal circulation - an in vivo study. The Artimino Conference on Medical Ultrasound Technology
Conference lecture

Grønli, Thomas; Løvstakken, Lasse. (2017) Modeling and data assimilation for improved blood velocity estimates. The Artimino Conference on Medical Ultrasound Technology
Conference poster

Grønli, Thomas; Swillens, Abigail; Segers, Patrick; Løvstakken, Lasse. (2017) Real-time Assimilation and Regularization of Ultrasound Blood Velocity Measurements Using Smoothed Particle Hydrodynamics. 2017 IEEE International Ultrasonics Symposium
Conference lecture

Løvstakken, Lasse. (2017) Ultrafast ultrasound blood flow imaging - current and future perspectives. SPIE medical imaging
Conference poster

Østvik, Andreas; Smistad, Erik; Aase, Svein Arne; Haugen, Bjørn Olav; Løvstakken, Lasse. (2017) Real-Time Classification of Standard Cardiac Views in Echocardiography using Neural Networks. IEEE International Ultrasonics Symposium
Conference lecture

Ekroll, Ingvild Kinn; Avdal, Jørgen; Salles, Sebastien; Fadnes, Solveig; Rodriguez-Molares, Alfonso; Løvstakken, Lasse. (2017) Quantitative ultrasound imaging (at NTNU) - cardiovascular applications. 2017 Workshop on cardiovascular applications of medical ultrasound imaging
Lecture

Fadnes, Solveig; Wigen, Morten Smedsrud; Grønli, Thomas; Nyrnes, Siri Ann; Løvstakken, Lasse. (2017) Cardiac vector flow imaging. Myocardial Velocity & Deformation Imaging
Conference lecture

Nyrnes, Siri Ann; Fadnes, Solveig; Mertens, Luc; Løvstakken, Lasse. (2017) Blood Speckle Tracking - New insight to Pediatric Cardiology?. ASE 2017
Conference lecture

Mawad, Wadi; Løvstakken, Lasse; Fadnes, Solveig; Mertens, Luc; Nyrnes, Siri Ann. (2017) Right ventricular flow dynamics in dilated right ventricles. Energy loss estimation based on blood speckle tracking echocardiography in children. ASE 2017
Lecture

Mertens, Luc; Nyrnes, Siri Ann; Løvstakken, Lasse. (2017) Blood Speckle Imaging - Initial experience in children. ASE 2017
Conference poster

Smistad, Erik; Østvik, Andreas; Haugen, Bjørn Olav; Løvstakken, Lasse. (2017) 2D Left ventricle segmentation using deep learning. International Ultrasonics Symposium (IUS)
Lecture

Salles, Sebastien; Løvstakken, Lasse. (2017) 3D myocardial mechanical wave measurements using high frame rate ultrasound imaging and Clutter filter wave imaging: towards a 3D myocardial elasticity mapping. IEEE Ultrasonics Symposium 2017
Conference poster

Salles, Sebastien; Løvstakken, Lasse; Torp, Hans. (2017) Clutter filter wave imaging (CFWI): a new way to visualize and detect mechanical waves propagation. IEEE Ultrasonics Symposium 2017

2016

Lecture

Karabiyik, Yucel; Avdal, Jørgen; Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2016) Data Adaptive 2-D Tracking Doppler. IEEE International Ultrasonics symposium
Conference lecture

Løvstakken, Lasse. (2016) 3D cardiac flow imaging - towards ultrafast. IEEE Symposium on Biomedical Imaging (ISBI)
Conference poster

Avdal, Jørgen; Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans Garman. (2016) Combined 2D Vector and Tracking Doppler for improved blood flow quantification. International ultrasonics symposium
Conference lecture

Fadnes, Solveig; Nyrnes, Siri Ann; Wigen, Morten Smedsrud; Tegnander, Eva; Løvstakken, Lasse. (2016) Detailed flow visualization in fetal and neonatal hearts using 2-D speckle tracking. IEEE International Ultrasonics Symposium
Lecture

Ekroll, Ingvild Kinn; Iversen, Daniel Høyer; Wigen, Morten Smedsrud; Khan, Naiad Hossain; Prieur, Fabrice Jean Gabriel; Løvstakken, Lasse; Håberg, Asta. (2016) Presentation of some CIUS projects. Technoport 2016
Conference lecture

Karabiyik, Yücel; Avdal, Jørgen; Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2016) Data Adaptive 2-D Tracking Doppler. IEEE International Ultrasonics Symposium
Conference lecture

Grønli, Thomas; Smistad, Erik; Nyrnes, Siri Ann; Gomez, Alberto; Løvstakken, Lasse. (2016) Reconstruction of In Vivo Flow Velocity Fields Based On a Rapid Ultrasound Image Segmentationand B-spline Regularization Framework. IEEE International Ultrasonics Symposium
Conference lecture

Høgenes, Jakob; Wigen, Morten Smedsrud; Nyrnes, Siri Ann; Segers, Patrick; Swillens, Abigail; Løvstakken, Lasse. (2016) Model-based estimation of intra-cardiac blood flow velocities using an unscented Kalman filter. IEEE International Ultrasonics Symposium
Conference lecture

Wigen, Morten Smedsrud; Løvstakken, Lasse. (2016) 1In vivo three-dimensional intra-cardiac vector flow imaging using a 2D matrix array transducer. IEEE International Ultrasonics Symposium

2015

Conference lecture

Nyrnes, Siri Ann; Løvstakken, Lasse. (2015) Kan ny ultralydteknologi gi økt kunnskap om barnehjerter?. Fredagsforelesning ved St. Olavs Hospital
Conference poster

Ekroll, Ingvild Kinn; Avdal, Jørgen; Swillens, Abigail Emily; Torp, Hans; Løvstakken, Lasse. (2015) Multi-angle imaging for robust vector Doppler and coherent compounding. IEEE International Ultrasonics symposium
Lecture

Løvstakken, Lasse; Nyrnes, Siri Ann. (2015) Nye ultralydbilder av blodstrøm kan gi bedre forståelse av hjertesykdom. Fredagsforelesning ved St. Olavs Hospital
Conference lecture

Wigen, Morten Smedsrud; Fadnes, Solveig; Løvstakken, Lasse. (2015) 3D vector flow imaging. Artimino
Conference lecture

Fadnes, Solveig; Nyrnes, Siri Ann; Løvstakken, Lasse. (2015) Plane wave imaging of congenital heart defects from fetal to newborn stage. Artimino
Lecture

Rodriguez-Molares, Alfonso; Løvstakken, Lasse; Denarie, Bastien; Torp, Hans. (2015) Busting the ghost in coherent plane-wave imaging. IEEE International Ultrasonics Symposium 2015
Conference lecture

Løvstakken, Lasse; Wigen, Morten Smedsrud; Fadnes, Solveig; Nyrnes, Siri Ann. (2015) 3D Cardiac Flow Imaging. Artimino
Conference lecture

Løvstakken, Lasse; Nyrnes, Siri Ann. (2015) Contrast-less, angle-independent flow mapping in the neonate and fetal circulation – technical insight and clinical examples. Myocardial Velocity & Deformation Imaging
Conference lecture

Karabiyik, Yücel; Ekroll, Ingvild Kinn; Avdal, Jørgen; Torp, Hans; Løvstakken, Lasse. (2015) Adaptive Spectral Estimation Methods in Color Flow Imaging. The Artimino Conference on Medical Ultrasound Technology
Conference lecture

Karabiyik, Yücel; Ekroll, Ingvild Kinn; Avdal, Jørgen; Torp, Hans; Løvstakken, Lasse. (2015) Adaptive Spectral Estimation Methods in Color Flow Imaging. IEEE International Ultrasonics Symposium
Conference lecture

Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2015) Improved quality of freehand 3-D ultrasound color flow imaging by multi-angle compounding. IEEE International Ultrasonics symposium
Conference lecture

Løvstakken, Lasse. (2015) Ultrasound imaging and quantification of cardiovascular disease - Present and future perspectives. 6th Seminar on Exercise in Medicine
Conference lecture

Løvstakken, Lasse; Fadnes, Solveig; Nyrnes, Siri Ann. (2015) Flow mapping in congenital heart disease. 10th European Echocardiography Course on Congenital Heart Disease
Conference lecture

Nyrnes, Siri Ann; Løvstakken, Lasse. (2015) Flow speckle tracking provides new information of complex blood flow in congenital heart disease. 49th Annual Meeting of the Association for European Paediatric and Congenital Cardiology, AEPC

2014

Interview

Midling, Anne Sliper; Løvstakken, Lasse; Nyrnes, Siri Ann. (2014) Lager værvarsel for barnehjertet.
Interview

Midling, Anne Sliper; Løvstakken, Lasse; Nyrnes, Siri Ann. (2014) Lager værvarsel for barnehjertet.
Interview

Sørland, Kaia; Løvstakken, Lasse. (2014) Stjerneforskning i startfasen.
Interview

Sørland, Kaia; Løvstakken, Lasse. (2014) Stjerneforskning i startfasen.
Interview

Løvstakken, Lasse. (2014) Ny ultralydteknologi kan redde flere liv.
Interview

Løvstakken, Lasse. (2014) Ny ultralydmetode testes på spedbarn.
Interview

Johnsen, Ingvild Bjellmo; Løvstakken, Lasse; Åsvold, Bjørn Olav; Høydal, Morten; Sætrom, Pål; Bonnevie, Tora. (2014) NTNUs stjerneforskere.
Interview

Løvstakken, Lasse; Nyrnes, Siri Ann; Toftaker, Jøte. (2014) Ny ultralydteknologi kan redde liv.
Interview

Hernes, Toril A. Nagelhus; Løvstakken, Lasse; Måsøy, Svein-Erik; Torp, Hans. (2014) Jubler over forskningsseier i Trondheim.
Conference poster

Kiss, Gabriel; Iversen, Daniel Høyer; Standal, Øyvind Krøvel-Velle; Rau, Jochen; Torp, Hans; Løvstakken, Lasse; Måsøy, Svein-Erik. (2014) A visualization tool for improved assessment and follow-up with ultrasound. IEEE Ultrasonics Symposium
Conference lecture

Løvstakken, Lasse. (2014) Ultrasound Imaging of the Heart at Very High Frame Rates. IEEE International Symposium on Biomedical Imaging
Interview

Midling, Anne Sliper; Løvstakken, Lasse; Nyrnes, Siri Ann. (2014) Bruker ultralyd for å finne feil i barnehjertet.
Interview

Løvstakken, Lasse. (2014) New way of visualizing young hearts can save lives.
Lecture

Løvstakken, Lasse. (2014) State-of-the-art ultrasound blood flow imaging. Medviz seminar

2013

Conference poster

Nyrnes, Siri Ann; Løvstakken, Lasse; Døhlen, Gaute; Skogvoll, Eirik; Torp, Hans; Skjærpe, Terje; Norgård, Gunnar; Samstad, Stein; Graven, Torbjørn; Haugen, Bjørn Olav. (2013) Transesophageal echocardiography with Blood Flow Imaging during Atrial Septal Defect closure: A comparison with the current references. AEPC 2013
Interview

Nyrnes, Siri Ann; Løvstakken, Lasse. (2013) Hjertebank på torget.
Conference poster

Vallee, Emilie Claire Yvonne; Ekroll, Ingvild Kinn; Denarie, Bastien; Løvstakken, Lasse; Håberg, Asta. (2013) Localizing brain activity with functional Ultrasound Imaging: a comparison with fMRI. 5th National PhD conference in Medical Imaging
Conference poster

Denarie, Bastien; Tangen, Thor Andreas; Ekroll, Ingvild Kinn; Rolim, Natale Pinheiro Lage; Torp, Hans; Bjåstad, Tore; Løvstakken, Lasse. (2013) Coherent plane wave compounding for very high frame rate ultrasonography of rapidly moving targets. 5th National PhD Conference in Medical Imaging
Interview

Nyrnes, Siri Ann; Fadnes, Solveig; Løvstakken, Lasse. (2013) Bedre diagnose for hjertebarn.
Conference lecture

Løvstakken, Lasse. (2013) Vortex Flow Imaging in Pediatric Heart Disease. Scientific sessions of the American Soceity of Echocardiography

2012

Conference poster

Iversen, Daniel Høyer; Lindseth, Frank; Torp, Hans; Løvstakken, Lasse. (2012) Improved 3-D reconstruction of vascular flow based on plane wave imaging. IEEE ultrasonics conference
Conference poster

Fredriksen, Tonje Dobrowen; Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans. (2012) 2D Tracking Doppler: A New Method to Limit Spectral Broadening in Pulsed Wave Doppler. IEEE Ultrasonics Symposium
Conference lecture

Løvstakken, Lasse. (2012) 2-D blood flow analysis without Doppler. Myocardial velocity and deformation imaging
Conference lecture

Ekroll, Ingvild Kinn; Dahl, Torbjørn; Torp, Hans; Løvstakken, Lasse. (2012) In vivo Vector Flow Imaging With Retrospective Pulsed Wave Doppler. IEEE, International ultrasonics symposium 2012
Conference lecture

Fadnes, Solveig; Nyrnes, Siri Ann; Swillens, Abigail; Torp, Hans; Løvstakken, Lasse. (2012) Shunt quantification in congenital heart disease based on two-dimensional speckle tracking. 4th PhD Conference in Medical Imaging
Conference lecture

Fadnes, Solveig; Nyrnes, Siri Ann; Swillens, Abigail; Torp, Hans; Løvstakken, Lasse. (2012) Shunt quantification in congenital heart disease based on two-dimensional speckle tracking. 2012 IEEE International Ultrasonics Symposium
Conference poster

Fadnes, Solveig; Nyrnes, Siri Ann; Swillens, Abigail; Torp, Hans; Løvstakken, Lasse. (2012) Shunt quantification in congenital heart disease based on two-dimensional speckle tracking. 2012 IEEE International Ultrasonics Symposium
Conference lecture

Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2012) Model-based correction of angle-dependencies in navigated 3-D flow imaging during neurosurgical interventions. Nansen Neuroscience Network meeting

2011

Interview

Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2011) Kan redde nyfødte med hjertefeil.
Interview

Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2011) Kan redde flere nyfødte med hjertefeil.
Interview

Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2011) Lettere å finne hjertefeil.
Conference lecture

Løvstakken, Lasse. (2011) High frame rate color-Doppler imaging - flow patterns without contrast. Myocardial velocity and deformation imaging
Conference poster

Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2011) Change in left ventricular vortex flow before and after surgery for coarctation of the aorta in an infant shown with plane wave imaging and flow speckle tracking. 45th Annual Meeting Association for European Paediatric Cardiology
Conference poster

Alnes, Solveig Søvik; Swillens, Abigail; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2011) Clutter filtering issues in speckle tracking for two-dimensional blood velocity estimation. IEEE International Ultrasonics Symposium 2011
Conference lecture

Løvstakken, Lasse; Nyrnes, Siri Ann; Haugen, Bjørn Olav; Torp, Hans. (2011) Latest technology for 2D blood flow analysis. Euroecho & other Imaging Modalities
Conference lecture

Løvstakken, Lasse; Nyrnes, Siri Ann; Haugen, Bjørn Olav; Torp, Hans. (2011) Angle-independent quantification of complex flow patterns in congenital heart disease. IEEE International Ultrasonics Symposium
Conference lecture

Alnes, Solveig Søvik; Løvstakken, Lasse. (2011) Multi-dimensional flow quantification of cardiac flow patterns. The Artimino Conference on Medical Ultrasound Technology
Conference lecture

Alnes, Solveig Søvik; Løvstakken, Lasse. (2011) Biomechanical simulation and multi-dimensional flow imaging of cardiac flow. The 2nd National PhD conference in Medical Imaging and the Annual MedViz conference
Conference lecture

Løvstakken, Lasse. (2011) Teknikker innen Doppleravbildning. Årsmøte for norsk forening for ultralyddiagnostikk
Conference lecture

Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2011) 3-D flow imaging in neurosurgery -Improved flow detection and quantification of neurovascular flow. Medical Imaging Medical Imaging
Conference poster

Denarie, Bastien; Bakstad, Ole Jørgen; Løvstakken, Lasse; Bjåstad, Tore; Torp, Hans. (2011) FieldSim3: a unified ultrasound simulation platform. 3rd National PhD Conference in Medical Imaging
Conference lecture

Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans. (2011) Improved spectral Doppler in medical ultrasound based on spatiotemporal adaptive signal processing. 2011 Joint National Ph.D. Conference in Medical Imaging and MedViz Conference
Interview

Nyrnes, Siri Ann; Løvstakken, Lasse; Haraldseth, Olav. (2011) Norwegian Research Centre Offers Hope For Tiny Hearts.
Interview

Nyrnes, Siri Ann; Løvstakken, Lasse; Haraldseth, Olav. (2011) Norwegian Research Centre Offers Hope For Tiny Hearts.
Interview

Nyrnes, Siri Ann; Løvstakken, Lasse; Haraldseth, Olav. (2011) Norwegian research centre offers hope for tiny hearts.
Interview

Nyrnes, Siri Ann; Løvstakken, Lasse. (2011) New Hope for Tiny Hearts.
Interview

Nyrnes, Siri Ann; Løvstakken, Lasse; Haraldseth, Olav. (2011) Norwegian Research Centre Offers Hope For Tiny Hearts.
Conference poster

Ekroll, Ingvild Kinn; Swillens, Abigail; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2011) Simultanous quantification of flow and tissue velocities based on multi-angle plane wave imaging with extended velocity range. IEEE International Ultrasonics Symposium 2011 (IUS 2011)
Conference poster

Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2011) Flow speckle tracking for detailed visualization of flow patterns in neonates with congenital heart defects. Euroecho & other Imaging Modalities 2011
Conference poster

Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2011) Model-based correction of angle-dependencies in navigated3-D flow imaging during neurosurgical interventions. IEEE ultrasonics conference 2011

2010

Conference lecture

Løvstakken, Lasse. (2010) Ny teknologi - ultralyd måler blodstrøm. Fagdager ved St. Olav
Conference lecture

Løvstakken, Lasse; Swillens, Abigail Emily; Segers, Patrick; Nordgaard, Håvard B.. (2010) Impact of competitive flow on wall shear stress in coronary surgery: Computational fluid dynamics of a LIMA-LAD anastomosis in a porcine model. Biomechanics in vascular biology and cardiovascular disease
Conference lecture

Marloes, De Witte; Swillens, Abigail Emily; Nordgaard, Håvard B.; Løvstakken, Lasse; Loo, D. Van; Trachet, Bram; Hoorebeke, Luc Van; Vierendeels, Jan; Segers, Patrick. (2010) Numerical simulation of the blood flow in a coronary LIMA-to-LAD bypass. 9th Belgian Day on Biomedical Engineering
Conference lecture

Swillens, Abigail Emily; Segers, Patrick; Løvstakken, Lasse. (2010) A combined speckle tracking and phase-shift estimation approach for 2D blood flow imaging in the carotid bifurcation. IEEE International Ultrasonics Symposium
Conference poster

Swillens, Abigail Emily; Groote, Joris De; Vierendeels, Jan; Løvstakken, Lasse; Segers, Patrick. (2010) Improving ultrasonic imaging of the vascular wall and blood flow using a multiphysics simulation tool integrating fluid-structure interaction and ultrasound simulations. IEEE International Ultrasonics Symposium
Conference lecture

Løvstakken, Lasse. (2010) Recent advances in blood flow imaging with ultrasound. NFUD ultralydsymposium
Conference lecture

Nordgaard, Håvard B.; Swillens, Abigail Emily; Nordhaug, Dag Ole; Kirkeby-Garstad, Idar; Loo, D. Van; Vitale, Nicola; Segers, Patrick; Haaverstad, Rune; Løvstakken, Lasse. (2010) Impact of competitive flow on wall shear stress in coronary surgery: Computational fluid dynamics of a LIMA-LAD anastomosis in a porcine model. Biomechanics in vascular biology and cardiovascular disease
Conference lecture

Løvstakken, Lasse. (2010) Angle-independent flow imaging using plane-waves and parallel receive beamforming. International Conference of the Society for Medical Innovation and Technology
Conference lecture

Løvstakken, Lasse. (2010) Potential of ultrafast flow imaging. MI Lab day
Conference lecture

Løvstakken, Lasse; Torp, Hans. (2010) Extended Velocity Range in Color Flow Imaging using Parallel Receive Beamforming. IEEE International Ultrasonics Symposium

2009

Conference lecture

Løvstakken, Lasse; Bjåstad, Tore Grüner; Hergum, Torbjørn; Kirkhorn, Johan; Nyrnes, Siri Ann; Torp, Hans. (2009) Real-time high frame rate flow imaging using plane-waves and parallel receive beamforming – an in vivo investigation. IEEE International Ultrasonics Symposium
Conference lecture

Swillens, Abigail; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2009) Two-dimensional flow velocity estimation in the carotid bifurcation: a study of crossed-beam vector Doppler and speckle tracking using computational fluid dynamics. IEEE International Ultrasonics Symposium
Conference lecture

Torp, Hans; Løvstakken, Lasse. (2009) Estimation and Imaging of Blood Flow Velocity. IEEE International Ultrasonics Symposium
Conference lecture

Solheim, Ole; Selbekk, Tormod; Løvstakken, Lasse; Tangen, Geir Arne; Solberg, Ole Vegard; Johansen, Tonni Franke; Cappelen, Johan; Unsgård, Geirmund. (2009) Intrasellar ultrasound in transsphenoidal surgery. EANS Annual Meeting 2009
Conference lecture

Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2009) Gir ny ultralydmetode bedre avbilding av lungeveneblodstrøm hos nyfødte?. Høstmøte i ekkokardiografi 2009
Conference lecture

Solheim, Ole; Selbekk, Tormod; Løvstakken, Lasse; Tangen, Geir Arne; Solberg, Ole Vegard; Johansen, Tonni Franke; Cappelen, Johan; Unsgård, Geirmund. (2009) Ultralydnavigert hypofysekirurgi. Midt-Norsk Regionmøte i Endokrinologi
Conference poster

Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans. (2009) Plane wave imaging for high frame rate flow visualisation in neonates with congenital heart disease. Euroecho 2009
Conference lecture

Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2009) Does a new ultrasound flow modality improve visualisation of neonatal pulmonary veins?. 5th World Congress of Paediatric Cardiology and Cardiac Surgery

2008

Conference lecture

Måsøy, Svein-Erik; Løvstakken, Lasse. (2008) New ultrasonic techniques for decompression evaluation. The future of Diving: 100 Years of Haldane and Beyond
Conference lecture

Nordgaard, Håvard B.; Nordhaug, Dag Ole; Kirkeby-Garstad, Idar; Løvstakken, Lasse; Vitale, Nicola; Haaverstad, Rune. (2008) Kan konkurrerende flow adskilles fra stenose i en LIMA – LAD anastomose med transit-tid blodstrømsmåling og høyfrekvent ultralyd avbildning?. Kirurgisk høstmøte, Norsk thoraxkirurgisk forening
Interview

Nyrnes, Siri Ann; Løvstakken, Lasse. (2008) Ny ultralydmetode hjelper barn.
Conference lecture

Nordgaard, Håvard B.; Nordhaug, Dag Ole; Kirkeby-Garstad, Idar; Løvstakken, Lasse; Vitale, Nicola; Haaverstad, Rune. (2008) Assessment of competitive flow and stenosis of the LIMA LAD anastomosis with transit-time flowmetry and epicardial ultrasound in a porcine model. SATS 57th Annual Meeting
Interview

Nyrnes, Siri Ann; Løvstakken, Lasse. (2008) Ny norsk ultralyd.
Conference lecture

Nordgaard, Håvard B.; Nordhaug, Dag Ole; Kirkeby-Garstad, Idar; Løvstakken, Lasse; Vitale, Nicola; Haaverstad, Rune. (2008) Transit-time flow measurements in the LIMA graft. Impact of competitive flow and stenosis of the anastomosis in a porcine model. SSRCTS 18th Annual Meeting
Conference lecture

Nordgaard, Håvard B.; Nordhaug, Dag Ole; Kirkeby-Garstad, Idar; Løvstakken, Lasse; Vitale, Nicola; Haaverstad, Rune. (2008) Different flow patterns due to competitive flow or stenosis in the LIMA-LAD anastomosis assessed by transit-time flowmetry in the pig. EACTS 22nd Annual Meeting.
Conference lecture

Nordgaard, Håvard B.; Nordhaug, Dag Ole; Løvstakken, Lasse; Kirkeby-Garstad, Idar; Vitale, Nicola. (2008) Transit-tid flowmåling og epikardiell ultralyd ved konkurrerende flow og stenose i LIMA – LAD anastomose. Midt-Norsk kardiologisk forum 2008
Conference poster

Frijlink, Martijn Egbert; Løvstakken, Lasse; Torp, Hans. (2008) Fundamental and Third Harmonic Operation of a Medical Phased Array Transducer. Ultrasonics Symposium
Conference poster

Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2008) The coronary arteries visualised by a new ultrasound flow modality. EuroEcho 2008
Conference poster

Løvstakken, Lasse; Ibrahim, Khalid Shaker Oklah; Vitale, Nicola; Henriksen, Siri; Kirkeby-Garstad, Idar; Torp, Hans; Haaverstad, Rune. (2008) Blood Flow Imaging - A new 2-D ultrasound modality for enhanced intraoperative visualization of blood flow patterns in coronary anastomoses. Medical Imaging Laboratory Day
Conference poster

Swillens, Abigail; Løvstakken, Lasse; Torp, Hans; Segers, Patrick. (2008) A comparison of multidimensional flow estimation techniques using computational fluid dynamics: speckle tracking versus vector Doppler. IEEE International Ultrasonics Symposium
Conference poster

Frijlink, Martijn Egbert; Løvstakken, Lasse; Torp, Hans. (2008) Fundamental and Third Harmonic Operation of a Medical Phased Array Transducer. Medical Imaging Laboratory Day
Conference lecture

Løvstakken, Lasse; Swillens, Abigail. (2008) Simulering av blodstrømsavbildning med ultralyd basert på computational fluid dynamics. Medisinsk Teknologi 2008
Conference lecture

Solheim, Ole; Selbekk, Tormod; Tangen, Geir Arne; Løvstakken, Lasse; Solberg, Ole Vegard; Johansen, Tonni Franke; Cappelen, Johan; Unsgård, Geirmund. (2008) Høyoppløselig, intrasellær ultralyd ved transsfenoidal hypofysekirurgi - tidlige erfaringer. Kirurgisk Høstmøte 2008
Conference lecture

Torp, Hans; Løvstakken, Lasse. (2008) Estimation and Imaging of Tissue Motion and Blood Velocity. 2008 IEEE International Ultrasonics Symposium - Short course

2007

Conference poster

Løvstakken, Lasse; Yu, Alfred C. H.; Torp, Hans. (2007) In Vivo Investigation of Filter order Influence in Eigen-based Clutter Filtering for Color Flow Imaging. IEEE International Ultrasonics Symposium
Conference poster

Yu, Alfred C. H.; Løvstakken, Lasse. (2007) Eigen-Based Clutter Filters for Color Flow Imaging: Single-Ensemble vs. Multi-Ensemble Approaches. IEEE International Ultrasonics Symposium
Conference poster

Oddershede, Niels; Løvstakken, Lasse; Torp, Hans. (2007) Multi-dimensional spectrum analysis for 2-D vector velocity estimation. IEEE International Ultrasonics Symposium
Conference poster

Løvstakken, Lasse; Orderud, Fredrik; Torp, Hans. (2007) Real-time Indication of Acoustic Window for Phased-Array Transducers in Ultrasound Imaging. IEEE International Ultrasonics Symposium
Conference poster

Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2007) A new ultrasound modality to visualise atrial septal defect flow in children. EuroEcho 2007

2006

Conference poster

Løvstakken, Lasse; Tangen, Thor Andreas; Bjærum, Steinar; Torp, Hans. (2006) Optimum velocity estimation in ultrasound color flow imaging in presence of clutter noise. IEEE International ultrasonics symposium
Conference lecture

Løvstakken, Lasse; Torp, Hans. (2006) Blood Flow Imaging (BFI) – En ny metode for visualisering av 2D blodstrømsforhold med ultralyd. Årsmøte for Norsk Forening for Ultralyddiagnostikk (NFUD)

2005

Conference poster

Amundsen, Brage H.; Løvstakken, Lasse; Samstad, Stein; Torp, Hans; Slørdahl, Stig Arild. (2005) Blood Flow Imaging by ultrasound– improved visualisation of flow direction in carotid stenoses using speckle tracking. Annual Congress of European Society of Cardiology 2005
Conference poster

Amundsen, Brage H.; Løvstakken, Lasse; Samstad, Stein; Torp, Hans; Slørdahl, Stig Arild. (2005) Ny ultralydmetode for bedre framstilling av flowretning i carotis-stenoser: Blood Flow Imaging (BFI). Norsk Cardiologisk Selskaps Vårmøte 2005
Conference poster

Løvstakken, Lasse; Bjærum, Steinar; Kristoffersen, Kjell; Haaverstad, Rune; Torp, Hans. (2005) Real-time Adaptive Clutter Rejection Filtering in Color Flow Imaging Using Power Method Iterations. IEEE International Ultrasonics Symposium

2004

Conference lecture

Ibrahim, Khalid Shaker Oklah; Løvstakken, Lasse; Kirkeby-Gaarstad, I.; Torp, Hans; Mårvik, Ronald; Haaverstad, Rune. (2004) Effect of the cardiac cycle and ultrasonic mode on the LIMA-LAD anastomosis in epicardial imaging. Abstract-book: Scandinavian Society for Research in Cardiothoracic Surgery meeting, Geilo, Norway
Conference lecture

Ibrahim, Khalid Shaker Oklah; Løvstakken, Lasse; Kirkeby-Gaarstad, I.; Torp, Hans; Vik-Mo, Harald; Haaverstad, Rune. (2004) Cardiac cycle and ultrasound mode does not influence the intraperative epicardial assessment of the LIMA-LAD anastomosis. First Conference of Arab Faculties of Medicine Society and first Conference of Jordanian Faculties of Medicine
Conference lecture

Torp, Hans; Løvstakken, Lasse. (2004) Decomposition of flow signals into basis functions: Performance advantages, disadvantages, and computational complexity. IEEE International Ultrasonics Symposium
Conference lecture

Løvstakken, Lasse; Bjærum, Steinar; Martens, Ditlef; Torp, Hans. (2004) Real-time Blood Motion Imaging - A 2D Blood Flow Visualization Technique. IEEE International Ultrasonics Symposium

2003

Conference poster

Løvstakken, Lasse; Haaverstad, Rune; Aadahl, Petter; Bjærum, Steinar; Samstad, Stein; Torp, Hans. (2003) Quality Control of Off-Pump Coronary Heart Surgery using Ultrasound Color Flow Imaging with Adaptive Clutter Rejection Filters. 2003 IEEE International Ultrasonics Symposium

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