2023

• Nyberg, John Anders Tomas; Jakobsen, Even Olav; Østvik, Andreas; Holte, Espen; Stølen, Stian; Løvstakken, Lasse. (2023) Determinants of left atrial reservoir strain in a large healthy population. European Heart Journal-Cardiovascular Imaging
  Abstract
• Salte, Ivar Mjåland; Østvik, Andreas; Olaisen, Sindre Hellum; Karlsen, Sigve; Dahlslett, Thomas; Smistad, Erik. (2023) Response to “Minimal Detectable Change and Reproducibility of Echocardiographic Strain: Implications for Clinical Practice”. Journal of the American Society of Echocardiography
  Letter to the editor
• Pasdeloup, David Francis Pierre; Løvstakken, Lasse; Smistad, Erik; Dalen, Håvard. (2023) Deep Learning in the Echocardiography Workflow: Challenges and Opportunities. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
  Doctoral dissertation
• Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Smistad, Erik; Pasdeloup, David Francis Pierre; Stølen, Stian Bergseng; Grenne, Bjørnar Leangen. (2023) Real-time guiding by deep learning during echocardiography to reduce left ventricular foreshortening and measurement variability. European Heart Journal - Imaging Methods and Practice
  Academic article
• Salte, Ivar Mjåland; Østvik, Andreas; Olaisen, Sindre Hellum; Karlsen, Sigve; Dahlslett, Thomas; Smistad, Erik. (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
• Szerypo Magelssen, Malgorzata Izabela; Hjorth-Hansen, Anna; Andersen, Garrett Newton; Graven, Torbjørn; Kleinau, Jens Olaf; Skjetne, Kyrre. (2023) Clinical Influence of Handheld Ultrasound, Supported by Automatic Quantification and Telemedicine, in Suspected Heart Failure. Ultrasound in Medicine and Biology
  Academic article
• Sørensen, Kristian; Fadnes, Solveig; Mertens, Luc; Henry, Matthew; Segers, Patrick; Løvstakken, Lasse. (2023) Assessment of Early Diastolic Intraventricular Pressure Difference in Children by Blood Speckle-Tracking Echocardiography. Journal of the American Society of Echocardiography
  Academic article
• Espeland, Torvald; Wigen, Morten Smedsrud; Dalen, Håvard; Berg, Erik Andreas Rye; Hammer, Tommy Arild; Salles, Sebastien Andre Roger. (2023) Mechanical wave velocities in left ventricular walls – in healthy subjects and patients with aortic stenosis. JACC Cardiovascular Imaging
  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. (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; Jakobsen, Even Olav; Østvik, Andreas; Holte, Espen; Stølen, Stian; Løvstakken, Lasse. (2023) Echocardiographic Reference Ranges of Global Longitudinal Strain for All Cardiac Chambers Using Guideline-Directed Dedicated Views. JACC Cardiovascular Imaging
  Academic article
• Kvalevåg, Magnus; Vrålstad, Anders Emil; Rindal, Ole Marius Hoel; Bjåstad, Tore Grüner; Dénarié, Bastien; Kristoffersen, Kjell. (2023) vbeam: A Fast and Differentiable Beamformer for Optimizing Ultrasound Imaging. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Yari, Yasin; Løvstakken, Lasse; Måsøy, Svein-Erik; Næve, Ingun; Bergtun, Per Helge; Voormolen, Marco Marien. (2023) Automated Measurement of Ovary Development in Atlantic Salmon using Deep Learning. Ultrasound in Medicine and Biology
  Academic article
• 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. IEEE conference proceedings
  Academic chapter/article/Conference paper
• 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
• 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

2022

• Pettersen, Håkon Neergaard; Sæbø, Sigbjørn; Pasdeloup, David Francis Pierre; Østvik, Andreas; Smistad, Erik; Stølen, Stian Bergseng. (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
  Abstract
• Hjorth-Hansen, Anna Katarina; Magelssen, Malgorzata Isabela; Andersen, Garrett Newton; Graven, Torbjørn; Kleinau, Jens Olaf; Landstad, Bodil. (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
• Hjorth-Hansen, Anna; Magelssen, Malgorzata Isabela; Andersen, Garrett Newton; Graven, Torbjørn; Kleinau, Jens Olaf; Landstad, Bodil. (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
• Smistad, Erik; Dalen, Håvard; Grenne, Bjørnar; Løvstakken, Lasse. (2022) Segmentation of parasternal long axis views using deep learning. 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
• Leinan, Paul Roger; Grønli, Thomas; Skjetne, Paal; Wigen, Morten Smedsrud; Urheim, Stig; Løvstakken, Lasse. (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
• Wifstad, Sigurd Vangen; Løvstakken, Lasse; Avdal, Jørgen; Berg, Erik Andreas Rye; Torp, Hans; Grenne, Bjørnar. (2022) Quantifying Valve Regurgitation Using 3-D Doppler Ultrasound Images and Deep Learning. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Pasdeloup, David Francis Pierre; Olaisen, Sindre Hellum; Østvik, Andreas; Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Holte, Espen. (2022) Real-Time Echocardiography Guidance for Optimized Apical Standard Views. Ultrasound in Medicine and Biology
  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
• Hu, Jieyu; Smistad, Erik; Salte, Ivar Mjåland; Dalen, Håvard; Løvstakken, Lasse. (2022) Exploiting temporal information in echocardiography for improved image segmentation. IEEE conference proceedings
  Academic chapter/article/Conference paper

2021

• Viggen, Erlend Magnus; Løvstakken, Lasse; Merciu, Ioan Alexandru; Måsøy, Svein-Erik. (2021) Better Automatic Interpretation of Cement Evaluation Logs through Feature Engineering. Society of Petroleum Engineers
  Academic chapter/article/Conference paper
• Smistad, Erik; Østvik, Andreas; Løvstakken, Lasse. (2021) Annotation Web - An open-source web-based annotation tool for ultrasound images. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Smistad, Erik; Steinsland, Erik Nikolai; Løvstakken, Lasse. (2021) Real-time 3D left ventricle segmentation and ejection fraction using deep learning. Proceedings - IEEE Ultrasonics Symposium
  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
  Abstract
• 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
• 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
• Østvik, Andreas; Salte, Ivar Mjåland; Smistad, Erik; Nguyen, Thuy Mi; Melichova, Daniela; Brunvand, Harald. (2021) Myocardial Function Imaging in Echocardiography Using Deep Learning. IEEE Transactions on Medical Imaging
  Academic article
• Salte, Ivar M.; Østvik, Andreas; Smistad, Erik; Melichova, Daniela; Nguyen, Thuy Mi; Karlsen, Sigve. (2021) Artificial Intelligence for Automatic Measurement of Left Ventricular Strain in Echocardiography. JACC Cardiovascular Imaging
  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
  Abstract
• Mawad, Wadi; Løvstakken, Lasse; Fadnes, Solveig; Grønli, Thomas; Segers, Patrick; Mertens, Luc. (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
• 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

2020

• 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
• 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
• Salles, Sebastien; Espeland, Torvald; Rodriguez-Molares, Alfonso; Aase, Svein Arne; Hammer, Tommy; Støylen, Asbjørn. (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
• 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
• Perrot, Vincent; Ekroll, Ingvild Kinn; Avdal, Jørgen; Saxhaug, Lars Mølgaard; Dalen, Håvard; Vray, Didier. (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
• Sengupta, Partho P.; Shrestha, Sirish; Berthon, Béatrice; Messas, Emmanuel; Donal, Erwan; Tison, Geoffrey H.. (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
  Abstract
• Salles, Sebastien; Kvåle, Kaja Frøysaa; Lervik, Lars Christian Naterstad; Støylen, Asbjørn; Løvstakken, Lasse; Samset, Eigil. (2020) Detection of Tissue Fibrosis using Natural Mechanical Wave Velocity Estimation: Feasibility Study. Ultrasound in Medicine and Biology
  Academic article
• Leclerc, Sarah; Smistad, Erik; Østvik, Andreas; Cervenansky, Frederic; Espinosa, Florian; Espeland, Torvald. (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
• Sørensen, Kristian; Fadnes, Solveig; Wigen, Morten Smedsrud; Salvesen, Øyvind; Mertens, Luc; Løvstakken, Lasse. (2020) Assessment of Diastolic Intraventricular Pressure Gradients in Children by Blood Speckle Tracking. A Feasibility Study. Journal of the American Society of Echocardiography
  Abstract
• Smistad, Erik; Østvik, Andreas; Salte, Ivar Mjåland; Melichova, Daniela; Nguyen, Thuy Mi; Haugaa, Kristina. (2020) Real-Time Automatic Ejection Fraction and Foreshortening Detection Using Deep Learning. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• 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

2019

• Aakervik, Anne-Lise; Løvstakken, Lasse; Torp, Hans; Aakhus, Svend. (2019) Lydbølger som er viktig for helsa. Gemini
  Popular scientific 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
• 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. (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
• Wigen, Morten Smedsrud; Løvstakken, Lasse; Fadnes, Solveig; Torp, Hans. (2019) 4D ultrasound vector flow imaging for intraventricular flow assessment. NTNU
  Doctoral dissertation
• 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
• 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
• Leclerc, Sarah; Smistad, Erik; Pedrosa, Joao; Østvik, Andreas; Cervenansky, Frederic; Espinosa, Florian. (2019) Deep Learning for Segmentation using an Open Large-Scale Dataset in 2D Echocardiography. IEEE Transactions on Medical Imaging
  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

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
• 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
• 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
• 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
• 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
• Perrot, Vincent; Avdal, Jørgen; Løvstakken, Lasse; Salles, Sebastien; Vray, Didier; Liebgott, Herve. (2018) Spatial and temporal adaptive FIR clutter filtering. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Wigen, Morten Smedsrud; Fadnes, Solveig; Rodriguez-Molares, Alfonso; Bjåstad, Tore Grüner; Eriksen, Marius; STENSÆTH, KNUT HAAKON. (2018) 4-D Intracardiac Ultrasound Vector Flow Imaging-Feasibility and Comparison to Phase-Contrast MRI. IEEE Transactions on Medical Imaging
  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
• Leclerc, Sarah; Smistad, Erik; Grenier, Thomas; Lartizien, Carole; Østvik, Andreas; Espinosa, Florian. (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

2017

• 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; 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
  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
• Rodriguez-Molares, Alfonso; Rindal, Ole Marius Hoel; Bernard, Olivier; Nair, Arun; Bell, Muyinatu A. Lediju; Liebgott, Herve. (2017) The UltraSound ToolBox. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• 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
  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. Doktoravhandlinger ved NTNU (227)
  Doctoral dissertation
• 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
  Abstract
• Salles, Sebastien; Rodriguez-Molares, Alfonso; Støylen, Asbjørn; Bjåstad, Tore Grüner; Aase, Svein Arne; 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. Proceedings - IEEE Ultrasonics Symposium
  Abstract
• Fadnes, Solveig; Tegnander, Eva; Nyrnes, Siri Ann; Løvstakken, Lasse. (2017) Vector Flow Imaging of Fetal Circulation using Diverging Waves. Proceedings - IEEE Ultrasonics Symposium
  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
  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
  Abstract

2016

• 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
• 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
• 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
• 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
• 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; 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
• Van Cauwenberge, Joris; Løvstakken, Lasse; Fadnes, Solveig; Rodriguez-Molares, Alfonso; Vierendeels, Jan; Segers, Patrick. (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
• Karabiyik, Yucel; Avdal, Jørgen; Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2016) Data adaptive 2-D tracking Doppler. 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
• Rimehaug, Audun Eskeland; Skogvoll, Eirik; Aadahl, Petter; Lyng, Oddveig; Nordhaug, Dag Ole; Løvstakken, Lasse. (2016) Minimally invasive beat-by-beat monitoring of cardiac power in normal hearts and during acute ventricular dysfunction. Physiological Reports
  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

• 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
• Nyrnes, Siri Ann; Løvstakken, Lasse. (2015) Flow speckle tracking provides new information of complex blood flow in congenital heart disease. Cardiology in the Young
  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
• 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
• 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
• 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
• 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
• 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; 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
• 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; 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

2014

• 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
• Johnsen, Ingvild Bjellmo; Løvstakken, Lasse; Åsvold, Bjørn Olav; Høydal, Morten; Sætrom, Pål; Bonnevie, Tora. (2014) NTNUs stjerneforskere. Adresseavisen
  Interview Journal
• Fadnes, Solveig; Løvstakken, Lasse. (2014) Two-Dimensional Blood Velocity Estimation for Intracardiac Flow Assessment. Doktoravhandlinger ved NTNU (260)
  Doctoral dissertation
• 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
• Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2014) New ultrasound flow modalities for evaluation of congenital heart defects. Doktoravhandlinger ved NTNU (275)
  Doctoral dissertation
• Iversen, Daniel Høyer; Løvstakken, Lasse; Lindseth, Frank; Torp, Hans. (2014) Improved methods for navigated 3-D vascular ultrasound imaging. Doktoravhandlinger ved NTNU (190)
  Doctoral dissertation
• Løvstakken, Lasse. (2014) 3D ultralydbilder av blodstrøm kan gi bedre forståelse av hjertesykdom.
  Website (informational material)
• 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
• Nyrnes, Siri Ann; Løvstakken, Lasse; Døhlen, Gaute; Skogvoll, Eirik; Torp, Hans; Skjærpe, Terje. (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
• 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
• 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
• 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
• 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. (2014) A visualization tool for improved assessment and follow-up with ultrasound. IEEE International Ultrasonics Symposium Proceedings
  Academic article

2013

• 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
• Denarie, Bastien; Tangen, Thor Andreas; Ekroll, Ingvild Kinn; Rolim, Natale Pinheiro Lage; Torp, Hans; Bjåstad, Tore. (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; Døhlen, Gaute; Skogvoll, Eirik; Torp, Hans; Skjærpe, Terje. (2013) Transesophageal echocardiography with Blood Flow Imaging during Atrial Septal defect closure: A comparison with the current references. Cardiology in the Young
  Abstract
• 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
• Van Canneyt, K.; Swillens, Abigail; Løvstakken, Lasse; Antiga, L; Verdonck, P.; Segers, Patrick. (2013) The accuracy of ultrasound volume flow measurements in the complex flow setting of a forearm vascular access. Journal of Vascular Access
  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
• 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

2012

• 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
• Swillens, Abigail Emily; De Santis, G.; 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
• 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
• 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
• 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
• 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
  Abstract
• 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; 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
  Article in business/trade/industry journal
• Swillens, Abigail; De Witte, Marloes; Nordgaard, Håvard B.; Løvstakken, Lasse; Van Loo, D.; Trachet, Bram. (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

2011

• 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
  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
• 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
  Abstract
• Swillens, Abigail Emily; De Santis, G.; 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; De Santis, G.; 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
• 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
• 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; De Groote, Joris; 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

2010

• 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
• 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
• 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
• 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
• Løvstakken, Lasse; Torp, Hans. (2010) Extended Velocity Range in Color Flow Imaging using Parallel Receive Beamforming. 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 (Lancaster)
  Academic article
• Solheim, Ole; Selbekk, Tormod; Løvstakken, Lasse; Tangen, Geir Arne; Solberg, Ole Vegard; Johansen, Tonni Franke. (2010) Intrasellar ultrasound in transsphenoidal surgery: a novel technique. Neurosurgery
  Academic article
• Nordgaard, Håvard B.; Swillens, Abigail; Nordhaug, Dag Ole; Kirkeby-Garstad, Idar; Van Loo, D.; Vitale, Nicola. (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
• 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
  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
• 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

2009

• Løvstakken, Lasse; Møllerløkken, Andreas; Måsøy, Svein-Erik. (2009) Current trends in ultrasound imaging technology, SURF imaging, and decompression induced microbubbles. Smithsonian Institution Press
  Academic chapter/article/Conference paper
• 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
• 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
• 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
  Abstract
• 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
• 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
• Swillens, A; De Schryver, T; 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

• Løvstakken, Lasse; Ibrahim, Khalid Shaker Oklah; Vitale, Nicola; Henriksen, Siren T.; Kirkeby-Garstad, Idar; Torp, Hans. (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
• 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
• 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
• Nyrnes, Siri Ann; Løvstakken, Lasse. (2008) Ny ultralydmetode gir bedre blodstrømsbilder. Dagens medisin
  Article in business/trade/industry journal
• Nyrnes, Siri Ann; Løvstakken, Lasse. (2008) Ny norsk ultralyd. ComputerWorld Norge
  Interview Journal
• Nyrnes, Siri Ann; Løvstakken, Lasse. (2008) Ny ultralydmetode hjelper barn. VG : Verdens gang
  Interview Journal
• 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
  Abstract

2007

• Løvstakken, Lasse. (2007) Signal processing in diagnostic ultrasound: Algorithms for real-time estimation and visualization of blood flow velocity. NTNU, Det medisinske fakultet
  Doctoral dissertation
• 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
• 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
• 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
• 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) Blood Flow Imaging - A New Angle-Independent Ultrasound Modality for the Visualization of Flow in Atrial Septal Defects in Children. Echocardiography
  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
  Abstract
• 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

2006

• 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; 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; 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