Bjørnar Leangen Grenne

About

Bjørnar Grenne, MD, PhD, FESC, FEACVI is an Associate Professor at the Department of Circulation and Medical Imaging (ISB), Faculty of Medicine and Health Sciences, NTNU, and a consultant cardiologist at the Department of Cardiology, St. Olavs Hospital. He leads research and innovation in advanced echocardiography and AI, aiming for higher quality, more predictable workflows, and patient-centred diagnostics.

Research and innovation. Grenne’s research comprises development, validation, and clinical implementation of AI-based methods for echocardiography, including automated measurements (strain/myocardial deformation) and decision support, with a focus on quality, reproducibility, and efficient workflow. He has served as Work Package Lead in CIUS (SFI, 2020–2024) and is PI on several research and innovation projects in clinical cardiology and the implementation of new medical technologies.

Project leadership and collaboration. He establishes and leads multidisciplinary teams of clinicians, engineers, and data scientists, and collaborates widely with Norwegian university hospitals and partners in the health and technology sectors (including SINTEF, Oslo University Hospital Rikshospitalet and Ullevål, Sørlandet Hospital, and the University Hospital of North Norway). He applies formal project-management competence in portfolio management, risk and stakeholder management, and sustainable clinical implementation. He is the Principal Union Representative for the Norwegian Medical Association at St. Olavs Hospital and works closely with organisations and hospital leadership to promote sustainable, high-quality services.

Academic leadership and service. Grenne is Chair of the Working Group of Echocardiography of the Norwegian Society of Cardiology and a member of the EACVI National Cardiac Societies Committee. He serves on the Editorial Board of the Journal of the American Society of Echocardiography (JASE).

Teaching and supervision. He has extensive teaching experience at both undergraduate and specialist levels (100+ lectures) and supervises numerous PhD, research-track, and master’s students (8 completed PhDs; 7 ongoing).

Clinical expertise. As a clinician, he has broad cardiology competence with expertise in advanced echocardiography for valvular disease, coronary artery disease, and structural heart disease, as well as intraoperative and interventional echocardiography.

Background. Grenne completed his MD from NTNU (2003), completed a PhD in Clinical Medicine at the University of Oslo (2011), and is board-certified in Internal Medicine and Cardiology (2015). He is currently pursuing a Master’s Degree in Project Management.

Publications

2025

Vyver, Gilles van de; Lenz, Aksel Try; Smistad, Erik; Olaisen, Sindre Hellum; Grenne, Bjørnar Leangen; Holte, Espen. (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. (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. (2025) Real-time deep learning-based image guiding and automated left ventricular measurements to reduce test-retest variability. Open heart
Academic article
Berg, Erik Andreas Rye; Aakhus, Svend; Grenne, Bjørnar Leangen; Torp, Hans. (2025) New echocardiographic methods for assessment of valvular regurgitation and left ventricular systolic function. NTNU Norges teknisk-naturvitenskapelige universitet NTNU Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
Jakobsen, Even Olav; Østvik, Andreas; Pasdeloup, David; Smistad, Erik; Nyberg, John; Stølen, Stian Bergseng. (2025) Novel automated quality indicators for echocardiography and their importance for left ventricular strain. European Heart Journal-Cardiovascular Imaging
Abstract
Holmstrøm, Vegard; Smistad, Erik; Østvik, Andreas; Holte, Espen; Stølen, Stian Bergseng; Løvstakken, Lasse. (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
Abstract
Melichova, Daniela; Nyberg, John; Nguyen, T M; Salte, Ivar Mjåland; Brunvand, Harald; Haugaa, Kristina Ingrid Helena Hermann. (2025) Clinical validation of a novel fully automated measurement method for echocardiographic mechanical dispersion using deep learning. European Heart Journal-Cardiovascular Imaging
Abstract
Holmstrøm, Vegard; Smistad, Erik; Grue, Jahn Frederik; Løvstakken, Lasse; Stølen, Stian Bergseng; Dalen, Håvard. (2025) Deep learning in echocardiography: Fully automated B-mode MAPSE measurements in real-time. European Heart Journal-Cardiovascular Imaging
Abstract
Pasdeloup, David; Østvik, Andreas; Smistad, Erik; Nyberg, John; Jakobsen, Even Olav; Grenne, Bjørnar Leangen. (2025) Effect of apical foreshortening and transducer angulation on strain measurements: a quantitative investigation. European Heart Journal-Cardiovascular Imaging
Abstract
Hu, Jieyu; Olaisen, Sindre Hellum; Pasdeloup, David; Vyver, Gilles van de; Østvik, Andreas; Holte, Espen. (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. (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
Academic article
Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Bøen, Gunn Catrin Fossum; Jakobsen, Even Olav; Langøy, Per K; Nilsen, Hans Olav. (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. (2025) Real-Time Global Longitudinal Strain During Echocardiography: A Deep Learning Platform for Improved Workflow. Journal of the American Society of Echocardiography
Academic article
Yu, Jinyang; Aakhus, Svend; Grenne, Bjørnar Leangen; Kirkeby-Garstad, Idar; Kiss, Gabriel Hanssen. (2025) Continuous monitoring of left ventricular function by transesophageal echocardiography and artificial intelligence. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
Vyver, Gilles van de; Måsøy, Svein-Erik; Dalen, Håvard; Grenne, Bjørnar Leangen; Holte, Espen; Olaisen, Sindre Hellum. (2025) Regional Image Quality Scoring for 2-D Echocardiography Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Hau, Mailys Francoise; Munafò, Riccardo; Saitta, Simone; Veronesi, Federico; Ingallina, Giacomo; Grenne, Bjørnar Leangen. (2025) Vendor-Agnostic 3D Mitral Valve Segmentation Using Semi-Supervised Learning.
Academic chapter/article/Conference paper
Yu, Jinyang; Høyland, Kjell; Berg, Erik Andreas Rye; Tannvik, Tomas Dybos; Grenne, Bjørnar Leangen; Aakhus, Svend. (2025) Right Ventricular Ejection Fraction Assessed by Single-Beat Three-Dimensional Transesophageal Echocardiography in Mechanically Ventilated Patients. Anesthesia and Analgesia
Academic article

2024

Berg, Erik Andreas Rye; Fiorentini, Stefano; Avdal, Jørgen; Grenne, Bjørnar Leangen; Stensæth, Knut Haakon; While, Peter Thomas. (2024) Quantification of valvular regurgitation by transthoracic 3D high pulse repetition frequency Doppler echocardiography. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Yu, Jinyang; Skogvoll, Eirik; Tannvik, Tomas Dybos; Tasken, Anders Austlid; Grenne, Bjørnar Leangen; Kirkeby-Garstad, Idar. (2024) Continuous mitral annular plane systolic excursion monitored using transesophageal echocardiography and deep learning reflects ventriculo-arterial coupling. Critical Care
Abstract
Yu, Jinyang; Skogvoll, Eirik; Tannvik, Tomas Dybos; Tasken, Anders Austlid; Grenne, Bjørnar Leangen; Kirkeby-Garstad, Idar. (2024) Continuous monitoring of mitral annular plane systolic excursion using transesophageal echocardiography and deep learning predicts postoperative cardiac biomarkers. Critical Care
Abstract
Hau, Mailys Francoise; Kildahl, Henrik Agerup; Veronesi, Federico; Lindseth, Frank; Grenne, Bjørnar Leangen; Kiss, Gabriel Hanssen. (2024) Automatic 3D Segmentation of Closed Mitral Valve Leaflets on Transesophageal Echocardiogram. NIKT: Norsk IKT-konferanse for forskning og utdanning
Academic article
Kavlie, Trym Løvseth; Kildahl, Henrik Agerup; Dalen, Håvard; Nordhaug, Dag Ole; Slagsvold, Katrine Hordnes; Grenne, Bjørnar Leangen. (2024) Five-year outcomes of mitral valve repair for leaflet prolapse at a medium-sized Norwegian university hospital. Scandinavian Cardiovascular Journal
Academic article
Sandberg, Edvard Liljedahl; Halvorsen, Sigrun; Berge, Trygve; Grimsmo, Jostein; Atar, Dan; Grenne, Bjørnar Leangen. (2024) Digital recruitment and compliance to treatment recommendations in the Norwegian Atrial Fibrillation self-screening pilot study. The European Heart Journal – Digital Health (EHJ-DH)
Academic article
Måsøy, Svein-Erik; Dénarié, Bastien Emmanuel; Sørnes, Anders Rasmus; Holte, Espen; Grenne, Bjørnar Leangen; Espeland, Torvald. (2024) Aberration correction in 3D transthoracic echocardiography. WFUMB Ultrasound Open
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
Fermann, Benjamin Strandli; Nyberg, John; Remme, Espen; Grue, Jahn Frederik; Grue, Helén; Håland, Roger. (2024) Cardiac Valve Event Timing in Echocardiography Using Deep Learning and Triplane Recordings. IEEE Journal of Biomedical and Health Informatics
Academic article
Wifstad, Sigurd Vangen; Kildahl, Henrik Agerup; Holte, Espen; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Salvesen, Øyvind Olav. (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. (2024) Automated Segmentation and Quantification of the Right Ventricle in 2-D Echocardiography. Ultrasound in Medicine and Biology
Academic article
Yu, Jinyang; Tasken, Anders Austlid; Flade, Hans Martin; Skogvoll, Eirik; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen. (2024) Automatic assessment of left ventricular function for hemodynamic monitoring using artificial intelligence and transesophageal echocardiography. Journal of clinical monitoring and computing
Academic article
Grenne, Bjørnar Leangen; Østvik, Andreas. (2024) Kunstig intelliges i ekkokardiografi: Vår nye superassistent?. Hjerteforum
Academic article
Tasken, Anders Austlid; Yu, Jinyang; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Holte, Espen; Dalen, Håvard. (2024) Automatic Detection and Tracking of Anatomical Landmarks in Transesophageal Echocardiography for Quantification of Left Ventricular Function. Ultrasound in Medicine and Biology
Academic article
Boskovic, Miroslav; Jortveit, Jarle; Haraldsen, Marius Blørstad; Berge, Trygve; Engdahl, Johan; Løchen, Maja-Lisa. (2024) The NORwegian atrial fibrillation self-SCREENing (NORSCREEN) trial: rationale and design of a randomized controlled trial. Europace
Article in business/trade/industry journal
Wifstad, Sigurd Vangen; Kildahl, Henrik Agerup; Grenne, Bjørnar Leangen; Holte, Espen; Hauge, Ståle Wågen; Sæbø, Sigbjørn. (2024) Mitral Valve Segmentation and Tracking from Transthoracic Echocardiography Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Yu, Jinyang; Tasken, Anders Austlid; Berg, Erik Andreas Rye; Tannvik, Tomas Dybos; Slagsvold, Katrine Hordnes; Kirkeby-Garstad, Idar. (2024) Continuous monitoring of left ventricular function in postoperative intensive care patients using artificial intelligence and transesophageal echocardiography. Intensive Care Medicine Experimental
Academic article
Yu, Jinyang; Tannvik, Tomas Dybos; Tasken, Anders Austlid; Berg, Erik Andreas Rye; Slagsvold, Katrine Hordnes; Kirkeby-Garstad, Idar. (2024) Kontinuerlig overvåking av venstre ventrikkelfunksjon hos intensivpasienter med transøsofageal ekkokardiografi og dyp læring reflekterer ventrikuloarteriell kobling. NAForum
Abstract
Nyberg, John; Østvik, Andreas; Salte, Ivar Mjåland; Olaisen, Sindre Hellum; Karlsen, Sigve; Dahlslett, Thomas. (2024) Deep learning improves test–retest reproducibility of regional strain in echocardiography. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Yu, Jinyang; Tasken, Anders Austlid; Berg, Erik Andreas Rye; Tannvik, Tomas Dybos; Slagsvold, Katrine Hordnes; Kirkeby-Garstad, Idar. (2024) Kontinuerlig 3D transøsofageal ekkokardiografi og dyp læring for overvåking av venstre ventrikkelfunksjon hos postoperative intensivpasienter. NAForum
Abstract
Yu, Jinyang; Høyland, Kjell; Berg, Erik Andreas Rye; Tannvik, Tomas Dybos; Grenne, Bjørnar Leangen; Aakhus, Svend. (2024) Høyre ventrikkels ejeksjonsfraksjon målt hos respiratorpasienter med enkeltslag 3D transøsofageal ekkokardiografi. NAForum
Abstract
Azad, Md Abulkalam; Chernyshov, Artem; Nyberg, John Anders Tomas; Tveten, Ingrid Elisabeth; Løvstakken, Lasse; Dalen, Håvard. (2024) EchoTracker: Advancing Myocardial Point Tracking in Echocardiography.
Academic chapter/article/Conference paper
Sæbø, Sigbjørn; Dalen, Håvard; Nyberg, John Anders Tomas; Grenne, Bjørnar Leangen; Jakobsen, Even Olav; Nes, Bjarne Martens. (2024) Left atrial to ventricular volume ratio and relation to fitness, cardiovascular risk factors, and diastolic function in healthy individuals: the HUNT Study. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Sandberg, Edvard Liljedahl; Halvorsen, Sigrun; Berge, Trygve; Grimsmo, Jostein; Atar, Dan; Grenne, Bjørnar Leangen. (2024) Screening for Atrial Fibrillation by Digital Health Technology in Older People in Homecare Settings: A Feasibility Trial. International Journal of Telemedicine and Applications
Academic article
Grenne, Bjørnar Leangen; Østvik, Andreas. (2024) Beyond Years: Is Artificial Intelligence Ready to Predict Biological Age and Cardiovascular Risk Using Echocardiography?. Journal of the American Society of Echocardiography
Editorial

2023

Berg, Erik Andreas Rye; Tasken, Anders Austlid; Nordal, Trym; Grenne, Bjørnar Leangen; Espeland, Torvald; Garstad, Idar Kirkeby. (2023) Fully automatic estimation of global left ventricular systolic function using deep learning in transesophageal echocardiography. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Sæbø, Sigbjørn; Nyberg, John Anders Tomas; Jakobsen, Even Olav; Nes, Bjarne Martens; Grenne, Bjørnar Leangen; Wisløff, Ulrik. (2023) The relation between left atrial and left ventricular size in a healthy population. European Heart Journal-Cardiovascular Imaging
Abstract
Tasken, Anders Austlid; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Holte, Espen; Dalen, Håvard; Stølen, Stian Bergseng. (2023) Automated estimation of mitral annular plane systolic excursion by artificial intelligence from 3D ultrasound recordings. Artificial Intelligence in Medicine
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
Nyberg, John; Jakobsen, Even Olav; Østvik, Andreas; Holte, Espen; Stølen, Stian Bergseng; Løvstakken, Lasse. (2023) Echocardiographic Reference Ranges of Global Longitudinal Strain for All Cardiac Chambers Using Guideline-Directed Dedicated Views. JACC Cardiovascular Imaging
Academic article
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
Reader opinion piece
Måsøy, Svein-Erik; Dénarié, Bastien Emmanuel; Sørnes, Anders Rasmus; Holte, Espen; Grenne, Bjørnar Leangen; Espeland, Torvald. (2023) Aberration correction in 2D echocardiography. Quantitative Imaging in Medicine and Surgery (QIMS)
Academic article
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 (EHJ-IMP)
Academic article
Nguyen, Thuy Mi; Melichova, Daniela; Aabel, Eivind Westrum; Lie, Øyvind Haugen; Klæboe, Lars Gunnar; Grenne, Bjørnar Leangen. (2023) Mortality in Patients with Acute Coronary Syndrome—A Prospective 5-Year Follow-Up Study. Journal of Clinical Medicine
Academic article
Halvorsrød, Marlene Iversen; Kiss, Gabriel Hanssen; Dahlslett, Thomas; Støylen, Asbjørn; Grenne, Bjørnar Leangen. (2023) Automated tissue Doppler imaging for identification of occluded coronary artery in patients with suspected non-ST-elevation myocardial infarction. The International Journal of Cardiovascular Imaging
Academic article
Sæbø, Sigbjørn; Pasdeloup, David Francis Pierre; Pettersen, Håkon Neergaard; Smistad, Erik; Østvik, Andreas; Olaisen, Sindre Hellum. (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
Yu, Jinyang; Flade, Hans-Martin; Tasken, Anders Austlid; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Rimehaug, Audun Eskeland. (2023) Left ventricular function monitored in intensive care using artificial intelligence and transesophageal echocardiography. Critical Care
Abstract
Yu, Jinyang; Tasken, Anders Austlid; Berg, Erik Andreas Rye; Tannvik, Tomas Dybos; Kirkeby-Garstad, Idar; Grenne, Bjørnar Leangen. (2023) Continuous monitoring of left ventricular function in intensive care using transesophageal echocardiography and artificial intelligence. Intensive Care Medicine Experimental
Abstract
Yu, Jinyang; Tasken, Anders Austlid; Berg, Erik Andreas Rye; Tannvik, Tomas Dybos; Kirkeby-Garstad, Idar; Grenne, Bjørnar Leangen. (2023) Kontinuerlig overvåking av venstre ventrikkelfunksjon hos intensivpasienter ved bruk av transøsofageal ekkokardiografi og kunstig intelligens. NAForum
Abstract
Nguyen, Daniel Khai; Ellingsen, Øyvind; Grenne, Bjørnar Leangen; Fremo, Thomas; Hov, Gunhild Garmo; Røsbjørgen, Ragnhild. (2023) Treadmill running intensity and post-exercise increase in plasma cardiac troponin I and T—A pilot study in healthy volunteers. Scandinavian Journal of Medicine & Science in Sports
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 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
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/article/Conference paper
Sandberg, Edvard Liljedahl; Halvorsen, Sigrun; Berge, Trygve; Grimsmo, Jostein; Atar, Dan; Fensli, Rune Werner. (2023) Fully digital self-screening for atrial fibrillation with patch electrocardiogram. Europace
Academic article

2022

Jacobsen, Lars; Grenne, Bjørnar; Olsen, Roy Bjørkholt; Jortveit, Jarle. (2022) Feasibility of prehospital identification of non-ST-elevation myocardial infarction by ECG, troponin and echocardiography. Emergency Medicine Journal
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. (2022) Quantifying Valve Regurgitation Using 3-D Doppler Ultrasound Images and Deep Learning. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
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
Karlsen, Sigve; Melichova, Daniela; Dahlslett, Thomas; Grenne, Bjørnar; Sjøli, Benthe; Smiseth, Otto A.. (2022) Increased deformation of the left ventricle during exercise test measured by global longitudinal strain can rule out significant coronary artery disease in patients with suspected unstable angina pectoris. Echocardiography
Academic article
Ingul, Charlotte Ingeborg Björk; Grimsmo, Jostein; Mecinaj, Albulena; Trebinjac, Divna; Nossen, Magnus Berger; Andrup, Simon. (2022) Cardiac Dysfunction and Arrhythmias 3 Months After Hospitalization for COVID-19. Journal of the American Heart Association (JAHA)
Academic article
Grande, Mikkel; Bjørnsen, Lars Petter Bache-Wiig; Næss-Pleym, Lars E.; Laugsand, Lars Erik; Grenne, Bjørnar. (2022) Observational study on chest pain during the Covid-19 pandemic: changes and characteristics of visits to a Norwegian emergency department during the lockdown. BMC Emergency Medicine
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

2021

Sandberg, Edvard Liljedahl; Grenne, Bjørnar; Berge, Trygve; Grimsmo, Jostein; Atar, Dan; Halvorsen, Sigrun. (2021) Diagnostic Accuracy and Usability of the ECG247 Smart Heart Sensor Compared to Conventional Holter Technology. Journal of Healthcare Engineering
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
Grenne, Bjørnar; Dalen, Håvard; Nordhaug, Dag Ole; Aas, Torgeir Sand; Holte, Espen; Damås, Jan Kristian. (2021) Corynebacterium freneyi as a cause of early prosthetic valve endocarditis. BMJ Case Reports
Academic article

2020

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
Odsæter, Ingrid Hov; Grenne, Bjørnar; Hov, Gunhild Garmo; Laugsand, Lars Erik; Wiseth, Rune; Mikkelsen, Gustav. (2020) Establishing the 99th percentile of a novel assay for high-sensitivity troponin I in a healthy blood donor population. Clinical Chemistry and Laboratory Medicine
Academic article

2019

Karlsen, Sigve; Dahlslett, Thomas; Grenne, Bjørnar; Sjøli, Benthe; Smiseth, Otto A.; Edvardsen, Thor. (2019) Global longitudinal strain is a more reproducible measure of left ventricular function than ejection fraction regardless of echocardiographic training. Cardiovascular Ultrasound
Academic article
Bjørnsen, Lars Petter Bache-Wiig; Næss-Pleym, Lars E.; Dale, Jostein; Grenne, Bjørnar; Wiseth, Rune. (2019) Description of chest pain patients in a Norwegian emergency department. Scandinavian Cardiovascular Journal
Academic article
Pham, Hoai An; Berg, Erik Andreas Rye; Veronesi, Federico; Fiorentini, Stefano; Fatemi, Ali; Grenne, Bjørnar. (2019) Fast ultrasound to ultrasound auto-registration for interventional cardiology. Proceedings - IEEE Ultrasonics Symposium
Academic article
Smenes, Benedikte; Flade, Hans-Martin; Kudra, Steven; Heigert, Matthias; Winnerkvist, Anders; Grenne, Bjørnar. (2019) En tungpustet mann i 50-årene med sirkulatorisk kollaps ved narkose. Tidsskrift for Den norske legeforening (Tidsskriftet)
Article in business/trade/industry journal

2018

Govatsmark, Ragna Elise Støre; Janszky, Imre; Slørdahl, Stig Arild; Ebbing, Marta; Wiseth, Rune; Grenne, Bjørnar. (2018) Completeness and correctness of acute myocardial infarction diagnoses in a medical quality register and an administrative health register. Scandinavian Journal of Public Health
Academic article
Lyng, Camilla Simonsen; Vegsundvåg, Johnny Åge; Wahba, Alexander; Grenne, Bjørnar. (2018) Constrictive pericarditis as a rare cause of chylothorax: A case report. European Heart Journal - Case Reports
Academic article

2014

Dahlslett, Thomas; Karlsen, Sigve; Grenne, Bjørnar; Eek, Christian; Sjøli, Benthe; Skulstad, Helge. (2014) Early Assessment of Strain Echocardiography Can Accurately Exclude Significant Coronary Artery Stenosis in Suspected Non-ST-Segment Elevation Acute Coronary Syndrome. Journal of the American Society of Echocardiography
Academic article
Jortveit, Jarle; Grenne, Bjørnar; Uchto, Michael; Dahlslett, Thomas; Fosse, Liv; Gunnes, Pål. (2014) Følges retningslinjene for behandling av hjerteinfarkt. Tidsskrift for Den norske legeforening (Tidsskriftet)
Academic article
Slørdahl, Tobias Schmidt; Amundsen, Brage H.; Størkersen, Øystein; STENSÆTH, KNUT-HAAKON; Slette, Morten Kristian; Wiseth, Rune. (2014) En mann i 60-årene med brystsmerter og funksjonsdyspné. Tidsskrift for Den norske legeforening (Tidsskriftet)
Academic article
Slørdahl, Tobias Schmidt; Amundsen, Brage H.; Størkersen, Øystein; STENSÆTH, KNUT-HAAKON; Slette, Morten Kristian; Wiseth, Rune. (2014) En mann i 60-årene med brystsmerter og funksjonsdyspné. Tidsskrift for Den norske legeforening (Tidsskriftet)
Article in business/trade/industry journal
Jortveit, Jarle; Grenne, Bjørnar; Uchto, Michael; Dahlslett, Thomas; Fosse, Liv; Gunnes, Pål. (2014) J. Jortveit og medarbeidere svarer. Tidsskrift for Den norske legeforening (Tidsskriftet)
Reader opinion piece

2013

Haugaa, Kristina; Grenne, Bjørnar Leangen; Eek, Christian; Ersbøll, Mads; Valeur, Nana; Svendsen, Jesper H.. (2013) Strain echocardiography improves risk prediction of ventricular arrhythmias after myocardial infarction. Journal of the American College of Cardiology
Academic article

2012

Dahlslett, Thomas; Grenne, Bjørnar Leangen; Eek, Christian; Sjøli, Benthe; Skulstad, Helge; Smiseth, Otto A.. (2012) Early strain echocardiography may exclude high-grade coronary artery stenosis in suspected non-ST-elevation acute coronary syndrome. European Heart Journal
Abstract

2011

Grenne, Bjørnar Leangen; Eek, Christian; Sjøli, Benthe; Dahlslett, Thomas; Hol, Per Kristian; Ørn, Stein. (2011) Mean Strain Throughout the Heart Cycle by Longitudinal Two-Dimensional Speckle-Tracking Echocardiography Enables Early Prediction of Infarct Size. Journal of the American Society of Echocardiography
Academic article
Sjøli, Benthe; Grenne, Bjørnar Leangen; Smiseth, Otto A.; Edvardsen, Thor; Brunvand, Harald. (2011) The Advantage of Global Strain Compared to Left Ventricular Ejection Fraction to Predict Outcome after Acute Myocardial Infarction. Echocardiography
Academic article
Dahlslett, Thomas; Grenne, Bjørnar; Eek, Christian; Sjøli, Benthe; Skulstad, Helge; Smiseth, Otto A.. (2011) Early Strain Echocardiography May Exclude Significant Coronary Artery Stenosis in Suspected Non-ST-Elevation Acute Coronary Syndrome. Circulation
Abstract
Grenne, Bjørnar Leangen; Edvardsen, Thor. (2011) Early risk stratification by echocardiography in acute coronary syndromes. Unipub forlag Unipub forlag
Doctoral dissertation
Eek, Christian; Grenne, Bjørnar Leangen; Brunvand, Harald; Aakhus, Svend; Endresen, Knut; Smiseth, Otto A.. (2011) Postsystolic shortening is a strong predictor of recovery of systolic function in patients with non-ST-elevation myocardial infarction. European Heart Journal-Cardiovascular Imaging
Academic article

2010

Grenne, Bjørnar Leangen; Eek, Christian; Sjøli, Benthe; Dahlslett, Thomas; Hol, Per Kristian; Skulstad, Helge. (2010) A simplified 6 segments model of circumferential strain by echocardiography reflects LV infarct size in NSTEMI. European Heart Journal
Abstract
Grenne, Bjørnar Leangen; Eek, Christian; Sjøli, Benthe; Dahlslett, Thomas; Uchto, Michael; Hol, Per Kristian. (2010) Acute coronary occlusion in non-ST-elevation acute coronary syndrome: outcome and early identification by strain echocardiography. Heart
Academic article
Eek, Christian; Grenne, Bjørnar Leangen; Brunvand, Harald; Aakhus, Svend; Endresen, Knut; Smiseth, Otto A.. (2010) Strain echocardiography predicts acute coronary occlusion in patients with non-ST-segment elevation acute coronary syndrome. European Heart Journal-Cardiovascular Imaging
Academic article
Grenne, Bjørnar Leangen; Eek, Christian; Sjøli, Benthe; Dahlslett, Thomas; Uchto, Michael; Hoi, P K. (2010) Circumferential strain by echocardiography identifies acute occlusions in non ST-elevation acute coronary syndromes. European Heart Journal
Abstract
Grenne, Bjørnar Leangen; Eek, Christian; Sjøli, Benthe; Skulstad, Helge; Aakhus, Svend; Smiseth, Otto A.. (2010) Changes of Myocardial Function in Patients with Non-ST-Elevation Acute Coronary Syndrome Awaiting Coronary Angiography. American Journal of Cardiology
Academic article
Eek, Christian; Grenne, Bjørnar Leangen; Brunvand, Harald; Aakhus, Svend; Endresen, Knut; Hol, Per Kristian. (2010) Strain Echocardiography and Wall Motion Score Index Predicts Final Infarct Size in Patients With Non-ST-Segment-Elevation Myocardial Infarction. Circulation Cardiovascular Imaging
Academic article

2009

Sjøli, Benthe; Ørn, Stein; Grenne, Bjørnar Leangen; Ihlen, Halfdan; Edvardsen, Thor; Brunvand, Harald. (2009) Diagnostic Capability and Reproducibility of Strain by Doppler and by Speckle Tracking in Patients With Acute Myocardial Infarction. Journal of the American College of Cardiology
Academic article
Sjøli, Benthe; Ørn, Stein; Grenne, Bjørnar Leangen; Vartdal, Trond; Smiseth, Otto A.; Edvardsen, Thor. (2009) Comparison of Left Ventricular Ejection Fraction and Left Ventricular Global Strain as Determinants of Infarct Size in Patients with Acute Myocardial Infarction. Journal of the American Society of Echocardiography
Academic article
Sjøli, Benthe; Orn, S; Grenne, Bjørnar Leangen; Ihlen, Halfdan; Edvardsen, Thor; Brunvand, H. (2009) Diagnostic capability and reproducibility of strain by Doppler and by speckle tracking in patients with acute myocardial infarction. JACC Cardiovascular Imaging
Academic article

Journal publications

Vyver, Gilles van de; Lenz, Aksel Try; Smistad, Erik; Olaisen, Sindre Hellum; Grenne, Bjørnar Leangen; Holte, Espen. (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. (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. (2025) Real-time deep learning-based image guiding and automated left ventricular measurements to reduce test-retest variability. Open heart
Academic article
Jakobsen, Even Olav; Østvik, Andreas; Pasdeloup, David; Smistad, Erik; Nyberg, John; Stølen, Stian Bergseng. (2025) Novel automated quality indicators for echocardiography and their importance for left ventricular strain. European Heart Journal-Cardiovascular Imaging
Abstract
Holmstrøm, Vegard; Smistad, Erik; Østvik, Andreas; Holte, Espen; Stølen, Stian Bergseng; Løvstakken, Lasse. (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
Abstract
Melichova, Daniela; Nyberg, John; Nguyen, T M; Salte, Ivar Mjåland; Brunvand, Harald; Haugaa, Kristina Ingrid Helena Hermann. (2025) Clinical validation of a novel fully automated measurement method for echocardiographic mechanical dispersion using deep learning. European Heart Journal-Cardiovascular Imaging
Abstract
Holmstrøm, Vegard; Smistad, Erik; Grue, Jahn Frederik; Løvstakken, Lasse; Stølen, Stian Bergseng; Dalen, Håvard. (2025) Deep learning in echocardiography: Fully automated B-mode MAPSE measurements in real-time. European Heart Journal-Cardiovascular Imaging
Abstract
Pasdeloup, David; Østvik, Andreas; Smistad, Erik; Nyberg, John; Jakobsen, Even Olav; Grenne, Bjørnar Leangen. (2025) Effect of apical foreshortening and transducer angulation on strain measurements: a quantitative investigation. European Heart Journal-Cardiovascular Imaging
Abstract
Hu, Jieyu; Olaisen, Sindre Hellum; Pasdeloup, David; Vyver, Gilles van de; Østvik, Andreas; Holte, Espen. (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. (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
Academic article
Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Bøen, Gunn Catrin Fossum; Jakobsen, Even Olav; Langøy, Per K; Nilsen, Hans Olav. (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. (2025) Real-Time Global Longitudinal Strain During Echocardiography: A Deep Learning Platform for Improved Workflow. Journal of the American Society of Echocardiography
Academic article
Vyver, Gilles van de; Måsøy, Svein-Erik; Dalen, Håvard; Grenne, Bjørnar Leangen; Holte, Espen; Olaisen, Sindre Hellum. (2025) Regional Image Quality Scoring for 2-D Echocardiography Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Yu, Jinyang; Høyland, Kjell; Berg, Erik Andreas Rye; Tannvik, Tomas Dybos; Grenne, Bjørnar Leangen; Aakhus, Svend. (2025) Right Ventricular Ejection Fraction Assessed by Single-Beat Three-Dimensional Transesophageal Echocardiography in Mechanically Ventilated Patients. Anesthesia and Analgesia
Academic article
Berg, Erik Andreas Rye; Fiorentini, Stefano; Avdal, Jørgen; Grenne, Bjørnar Leangen; Stensæth, Knut Haakon; While, Peter Thomas. (2024) Quantification of valvular regurgitation by transthoracic 3D high pulse repetition frequency Doppler echocardiography. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Yu, Jinyang; Skogvoll, Eirik; Tannvik, Tomas Dybos; Tasken, Anders Austlid; Grenne, Bjørnar Leangen; Kirkeby-Garstad, Idar. (2024) Continuous mitral annular plane systolic excursion monitored using transesophageal echocardiography and deep learning reflects ventriculo-arterial coupling. Critical Care
Abstract
Yu, Jinyang; Skogvoll, Eirik; Tannvik, Tomas Dybos; Tasken, Anders Austlid; Grenne, Bjørnar Leangen; Kirkeby-Garstad, Idar. (2024) Continuous monitoring of mitral annular plane systolic excursion using transesophageal echocardiography and deep learning predicts postoperative cardiac biomarkers. Critical Care
Abstract
Hau, Mailys Francoise; Kildahl, Henrik Agerup; Veronesi, Federico; Lindseth, Frank; Grenne, Bjørnar Leangen; Kiss, Gabriel Hanssen. (2024) Automatic 3D Segmentation of Closed Mitral Valve Leaflets on Transesophageal Echocardiogram. NIKT: Norsk IKT-konferanse for forskning og utdanning
Academic article
Kavlie, Trym Løvseth; Kildahl, Henrik Agerup; Dalen, Håvard; Nordhaug, Dag Ole; Slagsvold, Katrine Hordnes; Grenne, Bjørnar Leangen. (2024) Five-year outcomes of mitral valve repair for leaflet prolapse at a medium-sized Norwegian university hospital. Scandinavian Cardiovascular Journal
Academic article
Sandberg, Edvard Liljedahl; Halvorsen, Sigrun; Berge, Trygve; Grimsmo, Jostein; Atar, Dan; Grenne, Bjørnar Leangen. (2024) Digital recruitment and compliance to treatment recommendations in the Norwegian Atrial Fibrillation self-screening pilot study. The European Heart Journal – Digital Health (EHJ-DH)
Academic article
Måsøy, Svein-Erik; Dénarié, Bastien Emmanuel; Sørnes, Anders Rasmus; Holte, Espen; Grenne, Bjørnar Leangen; Espeland, Torvald. (2024) Aberration correction in 3D transthoracic echocardiography. WFUMB Ultrasound Open
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
Fermann, Benjamin Strandli; Nyberg, John; Remme, Espen; Grue, Jahn Frederik; Grue, Helén; Håland, Roger. (2024) Cardiac Valve Event Timing in Echocardiography Using Deep Learning and Triplane Recordings. IEEE Journal of Biomedical and Health Informatics
Academic article
Wifstad, Sigurd Vangen; Kildahl, Henrik Agerup; Holte, Espen; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Salvesen, Øyvind Olav. (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. (2024) Automated Segmentation and Quantification of the Right Ventricle in 2-D Echocardiography. Ultrasound in Medicine and Biology
Academic article
Yu, Jinyang; Tasken, Anders Austlid; Flade, Hans Martin; Skogvoll, Eirik; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen. (2024) Automatic assessment of left ventricular function for hemodynamic monitoring using artificial intelligence and transesophageal echocardiography. Journal of clinical monitoring and computing
Academic article
Grenne, Bjørnar Leangen; Østvik, Andreas. (2024) Kunstig intelliges i ekkokardiografi: Vår nye superassistent?. Hjerteforum
Academic article
Tasken, Anders Austlid; Yu, Jinyang; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Holte, Espen; Dalen, Håvard. (2024) Automatic Detection and Tracking of Anatomical Landmarks in Transesophageal Echocardiography for Quantification of Left Ventricular Function. Ultrasound in Medicine and Biology
Academic article
Boskovic, Miroslav; Jortveit, Jarle; Haraldsen, Marius Blørstad; Berge, Trygve; Engdahl, Johan; Løchen, Maja-Lisa. (2024) The NORwegian atrial fibrillation self-SCREENing (NORSCREEN) trial: rationale and design of a randomized controlled trial. Europace
Article in business/trade/industry journal
Wifstad, Sigurd Vangen; Kildahl, Henrik Agerup; Grenne, Bjørnar Leangen; Holte, Espen; Hauge, Ståle Wågen; Sæbø, Sigbjørn. (2024) Mitral Valve Segmentation and Tracking from Transthoracic Echocardiography Using Deep Learning. Ultrasound in Medicine and Biology
Academic article
Yu, Jinyang; Tasken, Anders Austlid; Berg, Erik Andreas Rye; Tannvik, Tomas Dybos; Slagsvold, Katrine Hordnes; Kirkeby-Garstad, Idar. (2024) Continuous monitoring of left ventricular function in postoperative intensive care patients using artificial intelligence and transesophageal echocardiography. Intensive Care Medicine Experimental
Academic article
Yu, Jinyang; Tannvik, Tomas Dybos; Tasken, Anders Austlid; Berg, Erik Andreas Rye; Slagsvold, Katrine Hordnes; Kirkeby-Garstad, Idar. (2024) Kontinuerlig overvåking av venstre ventrikkelfunksjon hos intensivpasienter med transøsofageal ekkokardiografi og dyp læring reflekterer ventrikuloarteriell kobling. NAForum
Abstract
Nyberg, John; Østvik, Andreas; Salte, Ivar Mjåland; Olaisen, Sindre Hellum; Karlsen, Sigve; Dahlslett, Thomas. (2024) Deep learning improves test–retest reproducibility of regional strain in echocardiography. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Yu, Jinyang; Tasken, Anders Austlid; Berg, Erik Andreas Rye; Tannvik, Tomas Dybos; Slagsvold, Katrine Hordnes; Kirkeby-Garstad, Idar. (2024) Kontinuerlig 3D transøsofageal ekkokardiografi og dyp læring for overvåking av venstre ventrikkelfunksjon hos postoperative intensivpasienter. NAForum
Abstract
Yu, Jinyang; Høyland, Kjell; Berg, Erik Andreas Rye; Tannvik, Tomas Dybos; Grenne, Bjørnar Leangen; Aakhus, Svend. (2024) Høyre ventrikkels ejeksjonsfraksjon målt hos respiratorpasienter med enkeltslag 3D transøsofageal ekkokardiografi. NAForum
Abstract
Sæbø, Sigbjørn; Dalen, Håvard; Nyberg, John Anders Tomas; Grenne, Bjørnar Leangen; Jakobsen, Even Olav; Nes, Bjarne Martens. (2024) Left atrial to ventricular volume ratio and relation to fitness, cardiovascular risk factors, and diastolic function in healthy individuals: the HUNT Study. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Sandberg, Edvard Liljedahl; Halvorsen, Sigrun; Berge, Trygve; Grimsmo, Jostein; Atar, Dan; Grenne, Bjørnar Leangen. (2024) Screening for Atrial Fibrillation by Digital Health Technology in Older People in Homecare Settings: A Feasibility Trial. International Journal of Telemedicine and Applications
Academic article
Grenne, Bjørnar Leangen; Østvik, Andreas. (2024) Beyond Years: Is Artificial Intelligence Ready to Predict Biological Age and Cardiovascular Risk Using Echocardiography?. Journal of the American Society of Echocardiography
Editorial
Berg, Erik Andreas Rye; Tasken, Anders Austlid; Nordal, Trym; Grenne, Bjørnar Leangen; Espeland, Torvald; Garstad, Idar Kirkeby. (2023) Fully automatic estimation of global left ventricular systolic function using deep learning in transesophageal echocardiography. European Heart Journal – Imaging Methods and Practice (EHJ-IMP)
Academic article
Sæbø, Sigbjørn; Nyberg, John Anders Tomas; Jakobsen, Even Olav; Nes, Bjarne Martens; Grenne, Bjørnar Leangen; Wisløff, Ulrik. (2023) The relation between left atrial and left ventricular size in a healthy population. European Heart Journal-Cardiovascular Imaging
Abstract
Tasken, Anders Austlid; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Holte, Espen; Dalen, Håvard; Stølen, Stian Bergseng. (2023) Automated estimation of mitral annular plane systolic excursion by artificial intelligence from 3D ultrasound recordings. Artificial Intelligence in Medicine
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
Nyberg, John; Jakobsen, Even Olav; Østvik, Andreas; Holte, Espen; Stølen, Stian Bergseng; Løvstakken, Lasse. (2023) Echocardiographic Reference Ranges of Global Longitudinal Strain for All Cardiac Chambers Using Guideline-Directed Dedicated Views. JACC Cardiovascular Imaging
Academic article
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
Reader opinion piece
Måsøy, Svein-Erik; Dénarié, Bastien Emmanuel; Sørnes, Anders Rasmus; Holte, Espen; Grenne, Bjørnar Leangen; Espeland, Torvald. (2023) Aberration correction in 2D echocardiography. Quantitative Imaging in Medicine and Surgery (QIMS)
Academic article
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 (EHJ-IMP)
Academic article
Nguyen, Thuy Mi; Melichova, Daniela; Aabel, Eivind Westrum; Lie, Øyvind Haugen; Klæboe, Lars Gunnar; Grenne, Bjørnar Leangen. (2023) Mortality in Patients with Acute Coronary Syndrome—A Prospective 5-Year Follow-Up Study. Journal of Clinical Medicine
Academic article
Halvorsrød, Marlene Iversen; Kiss, Gabriel Hanssen; Dahlslett, Thomas; Støylen, Asbjørn; Grenne, Bjørnar Leangen. (2023) Automated tissue Doppler imaging for identification of occluded coronary artery in patients with suspected non-ST-elevation myocardial infarction. The International Journal of Cardiovascular Imaging
Academic article
Sæbø, Sigbjørn; Pasdeloup, David Francis Pierre; Pettersen, Håkon Neergaard; Smistad, Erik; Østvik, Andreas; Olaisen, Sindre Hellum. (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
Yu, Jinyang; Flade, Hans-Martin; Tasken, Anders Austlid; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Rimehaug, Audun Eskeland. (2023) Left ventricular function monitored in intensive care using artificial intelligence and transesophageal echocardiography. Critical Care
Abstract
Yu, Jinyang; Tasken, Anders Austlid; Berg, Erik Andreas Rye; Tannvik, Tomas Dybos; Kirkeby-Garstad, Idar; Grenne, Bjørnar Leangen. (2023) Continuous monitoring of left ventricular function in intensive care using transesophageal echocardiography and artificial intelligence. Intensive Care Medicine Experimental
Abstract
Yu, Jinyang; Tasken, Anders Austlid; Berg, Erik Andreas Rye; Tannvik, Tomas Dybos; Kirkeby-Garstad, Idar; Grenne, Bjørnar Leangen. (2023) Kontinuerlig overvåking av venstre ventrikkelfunksjon hos intensivpasienter ved bruk av transøsofageal ekkokardiografi og kunstig intelligens. NAForum
Abstract
Nguyen, Daniel Khai; Ellingsen, Øyvind; Grenne, Bjørnar Leangen; Fremo, Thomas; Hov, Gunhild Garmo; Røsbjørgen, Ragnhild. (2023) Treadmill running intensity and post-exercise increase in plasma cardiac troponin I and T—A pilot study in healthy volunteers. Scandinavian Journal of Medicine & Science in Sports
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 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
Sandberg, Edvard Liljedahl; Halvorsen, Sigrun; Berge, Trygve; Grimsmo, Jostein; Atar, Dan; Fensli, Rune Werner. (2023) Fully digital self-screening for atrial fibrillation with patch electrocardiogram. Europace
Academic article
Jacobsen, Lars; Grenne, Bjørnar; Olsen, Roy Bjørkholt; Jortveit, Jarle. (2022) Feasibility of prehospital identification of non-ST-elevation myocardial infarction by ECG, troponin and echocardiography. Emergency Medicine Journal
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. (2022) Quantifying Valve Regurgitation Using 3-D Doppler Ultrasound Images and Deep Learning. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
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
Karlsen, Sigve; Melichova, Daniela; Dahlslett, Thomas; Grenne, Bjørnar; Sjøli, Benthe; Smiseth, Otto A.. (2022) Increased deformation of the left ventricle during exercise test measured by global longitudinal strain can rule out significant coronary artery disease in patients with suspected unstable angina pectoris. Echocardiography
Academic article
Ingul, Charlotte Ingeborg Björk; Grimsmo, Jostein; Mecinaj, Albulena; Trebinjac, Divna; Nossen, Magnus Berger; Andrup, Simon. (2022) Cardiac Dysfunction and Arrhythmias 3 Months After Hospitalization for COVID-19. Journal of the American Heart Association (JAHA)
Academic article
Grande, Mikkel; Bjørnsen, Lars Petter Bache-Wiig; Næss-Pleym, Lars E.; Laugsand, Lars Erik; Grenne, Bjørnar. (2022) Observational study on chest pain during the Covid-19 pandemic: changes and characteristics of visits to a Norwegian emergency department during the lockdown. BMC Emergency Medicine
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
Sandberg, Edvard Liljedahl; Grenne, Bjørnar; Berge, Trygve; Grimsmo, Jostein; Atar, Dan; Halvorsen, Sigrun. (2021) Diagnostic Accuracy and Usability of the ECG247 Smart Heart Sensor Compared to Conventional Holter Technology. Journal of Healthcare Engineering
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
Grenne, Bjørnar; Dalen, Håvard; Nordhaug, Dag Ole; Aas, Torgeir Sand; Holte, Espen; Damås, Jan Kristian. (2021) Corynebacterium freneyi as a cause of early prosthetic valve endocarditis. BMJ Case Reports
Academic article
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
Odsæter, Ingrid Hov; Grenne, Bjørnar; Hov, Gunhild Garmo; Laugsand, Lars Erik; Wiseth, Rune; Mikkelsen, Gustav. (2020) Establishing the 99th percentile of a novel assay for high-sensitivity troponin I in a healthy blood donor population. Clinical Chemistry and Laboratory Medicine
Academic article
Karlsen, Sigve; Dahlslett, Thomas; Grenne, Bjørnar; Sjøli, Benthe; Smiseth, Otto A.; Edvardsen, Thor. (2019) Global longitudinal strain is a more reproducible measure of left ventricular function than ejection fraction regardless of echocardiographic training. Cardiovascular Ultrasound
Academic article
Bjørnsen, Lars Petter Bache-Wiig; Næss-Pleym, Lars E.; Dale, Jostein; Grenne, Bjørnar; Wiseth, Rune. (2019) Description of chest pain patients in a Norwegian emergency department. Scandinavian Cardiovascular Journal
Academic article
Pham, Hoai An; Berg, Erik Andreas Rye; Veronesi, Federico; Fiorentini, Stefano; Fatemi, Ali; Grenne, Bjørnar. (2019) Fast ultrasound to ultrasound auto-registration for interventional cardiology. Proceedings - IEEE Ultrasonics Symposium
Academic article
Smenes, Benedikte; Flade, Hans-Martin; Kudra, Steven; Heigert, Matthias; Winnerkvist, Anders; Grenne, Bjørnar. (2019) En tungpustet mann i 50-årene med sirkulatorisk kollaps ved narkose. Tidsskrift for Den norske legeforening (Tidsskriftet)
Article in business/trade/industry journal
Govatsmark, Ragna Elise Støre; Janszky, Imre; Slørdahl, Stig Arild; Ebbing, Marta; Wiseth, Rune; Grenne, Bjørnar. (2018) Completeness and correctness of acute myocardial infarction diagnoses in a medical quality register and an administrative health register. Scandinavian Journal of Public Health
Academic article
Lyng, Camilla Simonsen; Vegsundvåg, Johnny Åge; Wahba, Alexander; Grenne, Bjørnar. (2018) Constrictive pericarditis as a rare cause of chylothorax: A case report. European Heart Journal - Case Reports
Academic article
Dahlslett, Thomas; Karlsen, Sigve; Grenne, Bjørnar; Eek, Christian; Sjøli, Benthe; Skulstad, Helge. (2014) Early Assessment of Strain Echocardiography Can Accurately Exclude Significant Coronary Artery Stenosis in Suspected Non-ST-Segment Elevation Acute Coronary Syndrome. Journal of the American Society of Echocardiography
Academic article
Jortveit, Jarle; Grenne, Bjørnar; Uchto, Michael; Dahlslett, Thomas; Fosse, Liv; Gunnes, Pål. (2014) Følges retningslinjene for behandling av hjerteinfarkt. Tidsskrift for Den norske legeforening (Tidsskriftet)
Academic article
Slørdahl, Tobias Schmidt; Amundsen, Brage H.; Størkersen, Øystein; STENSÆTH, KNUT-HAAKON; Slette, Morten Kristian; Wiseth, Rune. (2014) En mann i 60-årene med brystsmerter og funksjonsdyspné. Tidsskrift for Den norske legeforening (Tidsskriftet)
Academic article
Slørdahl, Tobias Schmidt; Amundsen, Brage H.; Størkersen, Øystein; STENSÆTH, KNUT-HAAKON; Slette, Morten Kristian; Wiseth, Rune. (2014) En mann i 60-årene med brystsmerter og funksjonsdyspné. Tidsskrift for Den norske legeforening (Tidsskriftet)
Article in business/trade/industry journal
Jortveit, Jarle; Grenne, Bjørnar; Uchto, Michael; Dahlslett, Thomas; Fosse, Liv; Gunnes, Pål. (2014) J. Jortveit og medarbeidere svarer. Tidsskrift for Den norske legeforening (Tidsskriftet)
Reader opinion piece
Haugaa, Kristina; Grenne, Bjørnar Leangen; Eek, Christian; Ersbøll, Mads; Valeur, Nana; Svendsen, Jesper H.. (2013) Strain echocardiography improves risk prediction of ventricular arrhythmias after myocardial infarction. Journal of the American College of Cardiology
Academic article
Dahlslett, Thomas; Grenne, Bjørnar Leangen; Eek, Christian; Sjøli, Benthe; Skulstad, Helge; Smiseth, Otto A.. (2012) Early strain echocardiography may exclude high-grade coronary artery stenosis in suspected non-ST-elevation acute coronary syndrome. European Heart Journal
Abstract
Grenne, Bjørnar Leangen; Eek, Christian; Sjøli, Benthe; Dahlslett, Thomas; Hol, Per Kristian; Ørn, Stein. (2011) Mean Strain Throughout the Heart Cycle by Longitudinal Two-Dimensional Speckle-Tracking Echocardiography Enables Early Prediction of Infarct Size. Journal of the American Society of Echocardiography
Academic article
Sjøli, Benthe; Grenne, Bjørnar Leangen; Smiseth, Otto A.; Edvardsen, Thor; Brunvand, Harald. (2011) The Advantage of Global Strain Compared to Left Ventricular Ejection Fraction to Predict Outcome after Acute Myocardial Infarction. Echocardiography
Academic article
Dahlslett, Thomas; Grenne, Bjørnar; Eek, Christian; Sjøli, Benthe; Skulstad, Helge; Smiseth, Otto A.. (2011) Early Strain Echocardiography May Exclude Significant Coronary Artery Stenosis in Suspected Non-ST-Elevation Acute Coronary Syndrome. Circulation
Abstract
Eek, Christian; Grenne, Bjørnar Leangen; Brunvand, Harald; Aakhus, Svend; Endresen, Knut; Smiseth, Otto A.. (2011) Postsystolic shortening is a strong predictor of recovery of systolic function in patients with non-ST-elevation myocardial infarction. European Heart Journal-Cardiovascular Imaging
Academic article
Grenne, Bjørnar Leangen; Eek, Christian; Sjøli, Benthe; Dahlslett, Thomas; Hol, Per Kristian; Skulstad, Helge. (2010) A simplified 6 segments model of circumferential strain by echocardiography reflects LV infarct size in NSTEMI. European Heart Journal
Abstract
Grenne, Bjørnar Leangen; Eek, Christian; Sjøli, Benthe; Dahlslett, Thomas; Uchto, Michael; Hol, Per Kristian. (2010) Acute coronary occlusion in non-ST-elevation acute coronary syndrome: outcome and early identification by strain echocardiography. Heart
Academic article
Eek, Christian; Grenne, Bjørnar Leangen; Brunvand, Harald; Aakhus, Svend; Endresen, Knut; Smiseth, Otto A.. (2010) Strain echocardiography predicts acute coronary occlusion in patients with non-ST-segment elevation acute coronary syndrome. European Heart Journal-Cardiovascular Imaging
Academic article
Grenne, Bjørnar Leangen; Eek, Christian; Sjøli, Benthe; Dahlslett, Thomas; Uchto, Michael; Hoi, P K. (2010) Circumferential strain by echocardiography identifies acute occlusions in non ST-elevation acute coronary syndromes. European Heart Journal
Abstract
Grenne, Bjørnar Leangen; Eek, Christian; Sjøli, Benthe; Skulstad, Helge; Aakhus, Svend; Smiseth, Otto A.. (2010) Changes of Myocardial Function in Patients with Non-ST-Elevation Acute Coronary Syndrome Awaiting Coronary Angiography. American Journal of Cardiology
Academic article
Eek, Christian; Grenne, Bjørnar Leangen; Brunvand, Harald; Aakhus, Svend; Endresen, Knut; Hol, Per Kristian. (2010) Strain Echocardiography and Wall Motion Score Index Predicts Final Infarct Size in Patients With Non-ST-Segment-Elevation Myocardial Infarction. Circulation Cardiovascular Imaging
Academic article
Sjøli, Benthe; Ørn, Stein; Grenne, Bjørnar Leangen; Ihlen, Halfdan; Edvardsen, Thor; Brunvand, Harald. (2009) Diagnostic Capability and Reproducibility of Strain by Doppler and by Speckle Tracking in Patients With Acute Myocardial Infarction. Journal of the American College of Cardiology
Academic article
Sjøli, Benthe; Ørn, Stein; Grenne, Bjørnar Leangen; Vartdal, Trond; Smiseth, Otto A.; Edvardsen, Thor. (2009) Comparison of Left Ventricular Ejection Fraction and Left Ventricular Global Strain as Determinants of Infarct Size in Patients with Acute Myocardial Infarction. Journal of the American Society of Echocardiography
Academic article
Sjøli, Benthe; Orn, S; Grenne, Bjørnar Leangen; Ihlen, Halfdan; Edvardsen, Thor; Brunvand, H. (2009) Diagnostic capability and reproducibility of strain by Doppler and by speckle tracking in patients with acute myocardial infarction. JACC Cardiovascular Imaging
Academic article

Part of book/report

Hau, Mailys Francoise; Munafò, Riccardo; Saitta, Simone; Veronesi, Federico; Ingallina, Giacomo; Grenne, Bjørnar Leangen. (2025) Vendor-Agnostic 3D Mitral Valve Segmentation Using Semi-Supervised Learning.
Academic chapter/article/Conference paper
Azad, Md Abulkalam; Chernyshov, Artem; Nyberg, John Anders Tomas; Tveten, Ingrid Elisabeth; Løvstakken, Lasse; Dalen, Håvard. (2024) EchoTracker: Advancing Myocardial Point Tracking in Echocardiography.
Academic chapter/article/Conference paper
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/article/Conference paper

Report

Berg, Erik Andreas Rye; Aakhus, Svend; Grenne, Bjørnar Leangen; Torp, Hans. (2025) New echocardiographic methods for assessment of valvular regurgitation and left ventricular systolic function. NTNU Norges teknisk-naturvitenskapelige universitet NTNU Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
Yu, Jinyang; Aakhus, Svend; Grenne, Bjørnar Leangen; Kirkeby-Garstad, Idar; Kiss, Gabriel Hanssen. (2025) Continuous monitoring of left ventricular function by transesophageal echocardiography and artificial intelligence. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
Grenne, Bjørnar Leangen; Edvardsen, Thor. (2011) Early risk stratification by echocardiography in acute coronary syndromes. Unipub forlag Unipub forlag
Doctoral dissertation

Outreach