2024

• Holst-Jæger, Emilie; Barstad, Marthe; Salvesen, Øyvind Olav; Torp, Hans; Seternes, Arne; Pettersen, Erik Mulder. (2024) Assessment of volume flow rate in arteriovenous fistulas with a novel ultrasound Doppler device (earlybird): Trend analysis, comparison of methods, and inter- and intra-rater reliability. Journal of Vascular Access
  Academic article
• Leth-Olsen, Martin; Døhlen, Gaute; Torp, Hans; Nyrnes, Siri Ann. (2024) Cerebral blood flow dynamics during cardiac surgery in infants. Pediatric Research
  Academic article
• Faldaas, Bjørn Ove; Nielsen, Erik Waage; Storm, Benjamin Stage; Lappegård, Knut Tore; Nilsen, Bent Aksel; Kiss, Gabriel Hanssen. (2024) Real-time feedback on chest compression efficacy by hands-free carotid Doppler in a porcine model. Resuscitation Plus
  Academic article
• Leth-Olsen, Martin; Døhlen, Gaute; Torp, Hans; Nyrnes, Siri Ann. (2024) Instant Detection of Cerebral Blood Flow Changes in Infants with Congenital Heart Disease during Transcatheter Interventions. Journal of Clinical Medicine
  Academic article
• Leth-Olsen, Martin; Døhlen, Gaute; Torp, Hans; Nyrnes, Siri Ann. (2024) Instant Detection of Cerebral Blood Flow Changes in Infants with Congenital Heart Disease during Transcatheter Interventions. Journal of Clinical Medicine
  Academic article

2023

• Strand, Kristin Melheim; Torp, Hans Garman; Husby, Anne Engtrø; Salvesen, Kjell Åsmund Blix; Nyrnes, Siri Ann. (2023) Continuous fetal cerebral blood flow monitoring during labor: A feasibility study. Early Human Development
  Academic article
• Vik, Sigrid Dannheim; Torp, Hans Garman; Jarmund, Anders Hagen; Kiss, Gabriel Hanssen; Follestad, Turid; Støen, Ragnhild. (2023) Continuous monitoring of cerebral blood flow during general anaesthesia in infants. BJA Open
  Academic article
• Jarmund, Anders Hagen; Pedersen, Sindre Andre; Torp, Hans Garman; Dudink, Jeroen; Nyrnes, Siri Ann. (2023) A scoping review of cerebral Doppler arterial waveforms in infants. Ultrasound in Medicine and Biology
  Academic literature review
• Faldaas, Bjørn Ove; Nielsen, Erik Waage; Storm, Benjamin Stage; Lappegård, Knut Tore; How, Ole-Jakob; nielsen, bent aksel. (2023) Real Time Feedback of Chest Compressions by Hands-Free Carotid Doppler in a Porcine Model. Circulation
  Abstract
• Faldaas, Bjørn Ove; Nielsen, Erik Waage; Storm, Benjamin; Lappegård, Knut Tore; How, Ole-Jakob; Nilsen, Bent Aksel. (2023) Hands-free continuous carotid Doppler ultrasound for detection of the pulse during cardiac arrest in a porcine model. Resuscitation Plus
  Academic article
• Fiorentini, Stefano; Berg, Erik Andreas Rye; Torp, Hans Garman; Aakhus, Svend; Avdal, Jørgen. (2023) Quantification of Flow Rates and Flow Volumes in Valve Regurgitation Using 3-D High Frame-Rate Ultrasound. IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control Society (OJUFFC)
  Academic article

2022

• 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, Erik Mulder; Hoel, Henrik; Torp, Hans; Hisdal, Jonny; Seternes, Arne. (2022) The Effect of 12-Week Treatment with Intermittent Negative Pressure on Blood Flow Velocity and Flowmotion, Measured with a Novel Doppler Device (Earlybird). Secondary Outcomes from a Randomized Sham-Controlled Trial in Patients with Peripheral Arterial Disease. Annals of Vascular Surgery
  Academic article
• Ødegård, Siv Steinsmo; Torp, Hans; Follestad, Turid; Leth-Olsen, Martin; Støen, Ragnhild; Nyrnes, Siri Ann. (2022) Low frequency cerebral arterial and venous flow oscillations in healthy neonates measured by NeoDoppler. Frontiers in pediatrics
  Academic article
• Leth-Olsen, Martin; Døhlen, Gaute; Torp, Hans; Nyrnes, Siri Ann. (2022) Detection of Cerebral High-Intensity Transient Signals by NeoDoppler during Cardiac Catheterization and Cardiac Surgery in Infants. Ultrasound in Medicine and Biology
  Academic article
• Leth-Olsen, Martin; Torp, Hans; Berner, Guro Grindheim; Døhlen, Gaute; Nyrnes, Siri Ann. (2022) NeoDoppler - Continous cerebral blood flow monitoring during cardiac surgery and interventions in children with congenital heart disease. Cardiology in the Young
  Abstract
• Faldaas, Bjørn Ove; Nielsen, Erik Waage; Storm, Benjamin Stage; Lappegård, Knut Tore; How, Ole-Jakob; Nilsen, Bent Aksel. (2022) RescueDoppler: Non-invasive Handsfree Carotid Doppler Ultrasound For Continuous Hemodynamic-guided Resuscitation. Circulation
  Abstract

2021

• Jarmund, Anders Hagen; Ødegård, Siv Steinsmo; Torp, Hans; Nyrnes, Siri Ann. (2021) Effects of tilt on cerebral hemodynamics measured by NeoDoppler in healthy neonates. Pediatric Research
  Academic article
• Leth-Olsen, Martin; Døhlen, Gaute; Torp, Hans; Nyrnes, Siri Ann. (2021) Monitoring of cerebral high intensity transient signals during catheter interventions and surgery for congenital heart disease in infants using NeoDoppler. European Heart Journal-Cardiovascular Imaging
  Abstract
• Jarmund, Anders Hagen; Ødegård, Siv Steinsmo; Torp, Hans; Nyrnes, Siri Ann. (2021) Hjernens hemodynamiske respons ved stillingsendring hos friske nyfødte målt med NeoDoppler. Ultraschall in der Medizin
  Academic article
• Pettersen, Erik Mulder; Avdal, Jørgen; Fiorentini, Stefano; Salvesen, Øyvind; Hisdal, Jonny; Torp, Hans. (2021) Validation of a novel ultrasound Doppler monitoring device (earlybird) for measurements of volume flow rate in arteriovenous fistulas for hemodialysis. Journal of Vascular Access
  Academic article

2020

• 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
• Fiorentini, Stefano; Avdal, Jørgen; Torp, Hans; Wiseth, Rune; Hellevik, Leif Rune. (2020) 3-D Doppler imaging in cardiac applications using high frame-rate sequences. Doctoral Thesis (2020:60)
  Doctoral dissertation
• Grue, Jahn Frederik; Haugen, Bjørn Olav; Dalen, Håvard; Torp, Hans. (2020) Automatic measurements of mitral annular motion indices. Doktoravhandlinger ved NTNU (4)
  Doctoral dissertation
• Tannvik, Tomas Dybos; Kiss, Gabriel; Torp, Hans; Rimehaug, Audun Eskeland; Kirkeby-Garstad, Idar. (2020) No evidence of cardiac stunning or decoupling immediately after cardiopulmonary bypass for elective coronary surgery. Acta Anaesthesiologica Scandinavica
  Academic article
• Aakhus, Svend; Torp, Hans; Skjærpe, Terje. (2020) EFSUMB History of Ultrasound, Norway, Cardiology. EFSUMB
  Report
• Grue, Jahn Frederik; Storve, Sigurd; Dalen, Håvard; Mjølstad, Ole Christian; Samstad, Stein; Eriksen-Volnes, Torfinn. (2020) Automatic quantification of left ventricular function by medical students using ultrasound. BMC Medical Imaging
  Academic article
• Rodriguez-Molares, Alfonso; Rindal, Ole Marius Hoel; D´Hooge, Jan; Måsøy, Svein-Erik; Austeng, Andreas; Bell, Muyinatu A. Lediju. (2020) The Generalized Contrast-to-Noise Ratio: A Formal Definition for Lesion Detectability. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Magelssen, Malgorzata Isabela; Palmer, Cameron Lowell; Hjorth-Hansen, Anna Katarina; Nilsen, Hans-Olav; Kiss, Gabriel; Torp, Hans. (2020) Feasibility and reliability of automatic quantitative analyses of mitral annular plane systolic excursion by handheld ultrasound devices. Journal of ultrasound in medicine
  Academic article
• Hjorth-Hansen, Anna; Andersen, Garrett Newton; Graven, Torbjørn; Gundersen, Guri Holmen; Kleinau, Jens Olaf; Mjølstad, Ole Christian. (2020) Feasibility and accuracy of tele-echocardiography, with examinations by nurses and interpretation by an expert via telemedicine, in an outpatient heart failure clinic. Journal of ultrasound in medicine
  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
• 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

2019

• Wigen, Morten Smedsrud; Løvstakken, Lasse; Fadnes, Solveig; Torp, Hans. (2019) 4D ultrasound vector flow imaging for intraventricular flow assessment. NTNU
  Doctoral dissertation
• 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
• Pettersen, Erik Mulder; Avdal, Jørgen; Hisdal, Jonny; Torp, Hans; Seternes, Arne. (2019) Validation of a novel ultrasound Doppler monitoring device (earlybird) for detection of microvascular circulatory changes. Clinical Hemorheology and Microcirculation
  Academic article
• Fiorentini, Stefano; Espeland, Torvald; Berg, Erik Andreas Rye; Aakhus, Svend; Torp, Hans; Avdal, Jørgen. (2019) Combining Automatic Angle Correction and 3-D Tracking Doppler for the Assessment of Aortic Stenosis Severity. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Grue, Jahn Frederik; Storve, Sigurd; Støylen, Asbjørn; Torp, Hans; Haugen, Bjørn Olav; Hansen, Harald Edvard Mølmen. (2019) Normal ranges for automatic measurements of tissue Doppler indices of mitral annular motion by echocardiography. Data from the HUNT3 Study. Echocardiography
  Academic article
• 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
• Vik, Sigrid Dannheim; Torp, Hans; Follestad, Turid; Støen, Ragnhild; Nyrnes, Siri Ann. (2019) NeoDoppler: New ultrasound technology for continous cerebral circulation monitoring in neonates. Pediatric Research
  Academic article
• Fiorentini, Stefano; Ekroll, Ingvild Kinn; Torp, Hans; Avdal, Jørgen. (2019) Flowline tracking Doppler. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Avdal, Jørgen; Ekroll, Ingvild Kinn; Torp, Hans. (2019) Fast Flow-Line-Based Analysis of Ultrasound Spectral and Vector Velocity Estimators. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article

2018

• Grue, Jahn Frederik; Storve, Sigurd; Dalen, Håvard; Salvesen, Øyvind; Mjølstad, Ole Christian; Samstad, Stein. (2018) Automatic measurements of mitral annular plane systolic excursion and velocities to detect left ventricular dysfunction. Ultrasound in Medicine and Biology
  Academic article
• Fiorentini, Stefano; Saxhaug, Lars Mølgaard; Holte, Espen; Bjåstad, Tore Grüner; Torp, Hans; Avdal, Jørgen. (2018) Maximum velocity estimation in coronary arteries using 3D tracking Doppler. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Kozolovski, Pavel; Rodriguez-Molares, Alfonso; Tangen, Thor Andreas; Kristoffersen, Kjell; Torp, Hans; Gérard, Olivier. (2018) Adaptive color gain for vena contracta quantification in valvular regurgitation. Ultrasound in Medicine and Biology
  Academic article
• Arneberg, Helene Caroline; Andersen, Thea Anette; Lorås, Liv; Torp, Hans; Scholbach, Thomas; Eggebø, Torbjørn Moe. (2018) Correlation Between Fetal Weight Gain and Birth Weight with Blood Flow in the Uterine Arteries Calculated with the PixelFlux Technique. Ultrasound International Open
  Academic article
• Fiorentini, Stefano; Espeland, Torvald; Berg, Erik Andreas Rye; Aakhus, Svend; Torp, Hans; Avdal, Jørgen. (2018) Combining Automatic Angle Correction and 3-D Tracking Doppler for Aortic Stenosis Severity Assessment. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Rodriguez-Molares, Alfonso; Rindal, Ole Marius Hoel; D'Hooge, Jan R M; Måsøy, Svein-Erik; Austeng, Andreas; Torp, Hans. (2018) The generalized contrast-to-noise ratio. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Avdal, Jørgen; Rodriguez-Molares, Alfonso; Berg, Erik Andreas Rye; Torp, Hans. (2018) Volume flow estimation in valvular jets using 3D high frame rate ultrasound. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Kiss, Gabriel; Palmer, Cameron Lowell; Mjølstad, Ole Christian; Dalen, Håvard; Haugen, Bjørn Olav; Torp, Hans. (2018) Augmented Reality-based Visualization for Echocardiographic Applications. CRC Press CRC Press
  Non-fiction book
• Golfetto, Cristiana; Ekroll, Ingvild Kinn; Torp, Hans; Avdal, Jørgen. (2018) 3D Coronary Blood Flow Imaging: A Comparison of Automatic Adaptive Clutter Filters. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Bolstad, Per Kristian; Hoff, Lars; Torp, Hans; Johansen, Tonni Franke. (2018) Design, Fabrication and Testing Highly Sensitive Single Element Doppler Transducers. Proceedings - IEEE Ultrasonics Symposium
  Academic article

2017

• Storve, Sigurd; Torp, Hans. (2017) Fast simulation of dynamic ultrasound images using the GPU. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Fatemi, Ali; Torp, Hans; Aakhus, Svend; Rodriguez-Molares, Alfonso. (2017) Increased clutter level in echocardiography due to specular reflection. Progress in Biomedical Optics and Imaging
  Academic article
• 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
• Lervik, Lars Christian Naterstad; Brekke, Birger; Aase, Svein Arne; Lønnebakken, Mai Tone; Stensvåg, Dordi; Amundsen, Brage H.. (2017) Myocardial Strain Rate by Anatomic Doppler Spectrum: First Clinical Experience Using Retrospective Spectral Tissue Doppler from Ultra-High Frame Rate Imaging. Ultrasound in Medicine and Biology
  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
• Khan, Naiad Hossain; Tegnander, Eva; Storve, Sigurd; Dreier, Johan Morten; Eik-Nes, Sturla; Torp, Hans. (2017) Automatic Measurement of Fetal Abdominal Biometric Parameters —Feasibility on a Portable Ultrasound Device. Open Journal of Obstetrics and Gynecology
  Academic article
• Golfetto, Cristiana; Torp, Hans; Ekroll, Ingvild Kinn. (2017) Adaptive Clutter Filtering in High Frame Rate 3D Coronary Imaging. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Arneberg, Helene Caroline; Andersen, Thea Anette; Lorås, Liv; Torp, Hans; Scholbach, Thomas; Eggebø, Torbjørn Moe. (2017) Sammenheng mellom blodstrøm i uterinarteriene og fostervekst. Gynekologen
  Abstract
• Bech, Solveig; Torp, Hans; Salles, Sebastien. (2017) Motion Tracking by Transverse Oscillations in 3D Cardiac Ultrasound Imaging. NTNU
  Masters thesis
• Andersen, Thea Anette; Arneberg, Helene Caroline; Eggebø, Torbjørn Moe; Torp, Hans; Scholbach, Thomas; Lorås, Liv. (2017) Blood flow calculated in the uterine arteries based on the PixelFlux technique. NTNU
  Thesis at a second degree level
• Rodriguez-Molares, Alfonso; Fatemi, Ali; Løvstakken, Lasse; Torp, Hans. (2017) Specular Beamforming. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• 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
• Fiorentini, Stefano; Saxhaug, Lars Mølgaard; Bjåstad, Tore Grüner; Holte, Espen; Torp, Hans; Avdal, Jørgen. (2017) 3D tracking Doppler for quantitative blood flow assessment of coronary arteries. Proceedings - IEEE Ultrasonics Symposium
  Abstract
• Avdal, Jørgen; Torp, Hans. (2017) Fast ultrasound simulation method for evaluation of velocity estimators. Proceedings - IEEE Ultrasonics Symposium
  Abstract
• Bech, Solveig; Salles, Sebastien; Torp, Hans. (2017) Comparison of 3D tissue motion estimation methods using transverse oscillations. Proceedings - IEEE Ultrasonics Symposium
  Abstract
• Bech, Solveig; Salles, Sebastien; Torp, Hans. (2017) Comparison of 3D tissue motion estimation methods using transverse oscillations. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Fiorentini, Stefano; Saxhaug, Lars Mølgaard; Bjåstad, Tore Grüner; Holte, Espen; Torp, Hans; Avdal, Jørgen. (2017) 3D tracking Doppler for improved quantitative blood flow assessment of coronary arteries. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Andersen, Thea Anette; Arneberg, Helene Caroline; Scholbach, Thomas; Torp, Hans; Lorås, Liv; Eggebø, Torbjørn Moe. (2017) Blood flow calculated in the uterine arteries based on the PixelFlux technique. Ultrasound in Obstetrics and Gynecology
  Abstract
• Avdal, Jørgen; Løvstakken, Lasse; Torp, Hans; Ekroll, Ingvild Kinn. (2017) Combined 2-D Vector imaging and Tracking Doppler for improved vascular blood velocity quantification. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Khan, Naiad Hossain; Tegnander, Eva; Dreier, Johan Morten; Eik-Nes, Sturla; Torp, Hans; Kiss, Gabriel. (2017) Automatic Detection and Measurement of Fetal Biparietal Diameter and Femur Length — Feasibility on a Portable Ultrasound Device. Open Journal of Obstetrics and Gynecology
  Academic article
• Salles, Sebastien; Aase, Svein Arne; Bjåstad, Tore Grüner; Løvstakken, Lasse; Torp, Hans. (2017) Clutter filter wave imaging (CFWI): A new way to visualize and detect mechanical waves propagation. Proceedings - IEEE Ultrasonics Symposium
  Abstract

2016

• Tortoli, Piero; Torp, Hans. (2016) Introduction to the Special Issue on Flow Measurement and Imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Editorial
• Khan, Naiad Hossain; Tegnander, Eva; Dreier, Johan Morten; Eik-Nes, Sturla; Torp, Hans; Kiss, Gabriel. (2016) Automatic measurement of the fetal abdominal section on a portable ultrasound machine for use in low and middle income countries. Proceedings - IEEE Ultrasonics Symposium
  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
• Kathpalia, Aditi; Karabiyik, Yücel; Eik-Nes, Sturla; Tegnander, Eva; Ekroll, Ingvild Kinn; Kiss, Gabriel. (2016) Adaptive Spectral Envelope Estimation for Doppler Ultrasound. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  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
• 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
• Smiseth, Otto A.; Torp, Hans; Opdahl, Anders; Haugaa, Kristina; Urheim, Stig. (2016) Myocardial strain imaging: How useful is it in clinical decision making?. European Heart Journal
  Academic literature review
• Storve, Sigurd; Grue, Jahn Frederik; Samstad, Stein; Dalen, Håvard; Haugen, Bjørn Olav; Torp, Hans. (2016) Realtime Automatic Assessment of Cardiac Function in Echocardiography. 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
• Rindal, Ole Marius Hoel; Austeng, Andreas; Torp, Hans Garman; Holm, Sverre; Rodriguez-Molares, Alfonso. (2016) The dynamic range of adaptive beamformers. Proceedings - IEEE Ultrasonics Symposium
  Academic article

2015

• 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
• 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
• Kiss, Gabriel; Khan, Naiad Hossain; Tegnander, Eva; Eik-Nes, Sturla; Torp, Hans. (2015) Fast ultrasound signal and image processing on a tablet device. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Palmer, Cameron Lowell; Haugen, Bjørn Olav; Tegnander, Eva; Eik-Nes, Sturla; Torp, Hans; Kiss, Gabriel. (2015) Mobile 3D augmented-reality system for ultrasound applications. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Kathpalia, Aditi; Karabiyik, Yucel; Simensen, Bente; Tegnander, Eva; Eik-Nes, Sturla; Torp, Hans. (2015) A robust Doppler spectral envelope detection technique for automated blood flow measurements. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Khan, Naiad Hossain; Tegnander, Eva; Dreier, Johan Morten; Eik-Nes, Sturla; Torp, Hans; Kiss, Gabriel. (2015) Automatic Detection and Measurement of Fetal Femur Length using a Portable Ultrasound Device. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Kiss, Gabriel; Palmer, Cameron Lowell; Torp, Hans. (2015) Patient Adapted Augmented Reality System for Real-Time Echocardiographic Applications. Lecture Notes in Computer Science (LNCS)
  Academic article
• Storve, Sigurd; Torp, Hans. (2015) Use of B-splines in fast dynamic ultrasound RF simulations. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2015) Improved quality of freehand 3-D ultrasound color flow imaging by multi-angle compounding. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Fadnes, Solveig; Bjærum, Steinar; Torp, Hans; Løvstakken, Lasse. (2015) Clutter filtering influence on blood velocity estimation using speckle tracking. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Fadnes, Solveig; Ekroll, Ingvild Kinn; Nyrnes, Siri Ann; Torp, Hans; Løvstakken, Lasse. (2015) Robust angle-independent blood velocity estimation based on dual-angle plane wave imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• 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
• Torp, Hans; Rodriguez-Molares, Alfonso; Løvstakken, Lasse. (2015) Optimum beamformer strategy for detecting signals in clutter noise . Proceedings - IEEE Ultrasonics Symposium
  Academic article

2014

• Brekke, Birger; Nilsen, Lars Christian Lervik; Lund, Joakim Schistad; Torp, Hans; Bjåstad, Tore; Amundsen, Brage H.. (2014) Ultra-high frame rate tissue doppler imaging. Ultrasound in Medicine and Biology
  Academic article
• Skaug, Thomas; Amundsen, Brage H.; Hergum, Torbjørn; Urheim, Stig; Torp, Hans; Haugen, Bjørn Olav. (2014) Quantification of aortic regurgitation using high-pulse repetition frequency three-dimensional colour Doppler. European Heart Journal-Cardiovascular Imaging
  Academic article
• Kiss, Gabriel; Storve, Sigurd; Haugen, Bjørn Olav; Torp, Hans. (2014) Augmented reality based tools for echocardiographic acquisitions. IEEE International Ultrasonics Symposium Proceedings
  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
• 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
• 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
• Fadnes, Solveig; Ekroll, Ingvild Kinn; Nyrnes, Siri Ann; Torp, Hans; Løvstakken, Lasse. (2014) Robust angle-independent blood velocity estimation based on multi-angle speckle tracking and vector Doppler. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Nyrnes, Siri Ann; Løvstakken, Lasse; 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
• Heger, Max; Stavdahl, Øyvind; Torp, Hans. (2014) Ultrasound Strain Rate Imaging of Individual Muscle Motor Units. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Nordbø, Øyvind; Lamata, P.; Land, Sander; Niederer, Steven A.; Aronsen, Jan Magnus; Louch, William Edward. (2014) A computational pipeline for quantification of mouse myocardial stiffness parameters. Computers in Biology and Medicine
  Academic article
• Ekroll, Ingvild Kinn; Dahl, Torbjørn; Torp, Hans; Løvstakken, Lasse. (2014) Combined vector velocity and spectral doppler imaging for improved imaging of complex blood flow in the carotid arteries. Ultrasound in Medicine and Biology
  Academic article
• Khan, Naiad Hossain; Tegnander, Eva; Dreier, Johan Morten; Eik-Nes, Sturla; Torp, Hans; Kiss, Gabriel. (2014) Automatic Measurement of Biparietal Diameter with a Portable Ultrasound Device. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Fredriksen, Tonje Dobrowen; Torp, Hans; Haugen, Bjørn Olav. (2014) Quantitative Doppler Methods in Cardiovascular Imaging. Doktoravhandlinger ved NTNU (312)
  Doctoral dissertation
• 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
• 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
• Storve, Sigurd; Grue, Jahn Frederik; Samstad, Stein; Dalen, Håvard; Haugen, Bjørn Olav; Torp, Hans. (2014) Realtime automatic detection of heart failure in echocardiography. Proceedings - IEEE Ultrasonics Symposium
  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

2013

• 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
• 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
• Thorstensen, Anders; Dalen, Håvard; Hala, Pavel; Kiss, Gabriel; D'hooge, Jan R M; Torp, Hans. (2013) Three-Dimensional Echocardiography in the Evaluation of Global and Regional Function in Patients with Recent Myocardial Infarction: A Comparison with Magnetic Resonance Imaging. Echocardiography
  Academic article
• Prieur, Fabrice Jean Gabriel; Denarie, Bastien; Austeng, Andreas; Torp, Hans. (2013) Multi-Line Transmission in Medical Imaging Using the Second-Harmonic Signal. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Kiss, Gabriel; Ford, Steven Thomas; Claus, Piet; D'hooge, Jan R M; Torp, Hans. (2013) Fusion of 3D echo and cardiac magnetic resonance volumes during live scanning. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Fredriksen, Tonje Dobrowen; Haugen, Bjørn Olav; Torp, Hans; Kiss, Gabriel; Strypet, Hanne; Dahl, Erlend. (2013) Jakten på ultralydbølgene - et spill for nettbrett og mobil.
  Multimedia product
• 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
• Denarie, Bastien; Bjåstad, Tore; Torp, Hans. (2013) Multi-Line Transmission in 3-D With Reduced Crosstalk Artifacts: A Proof of Concept Study. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Denarie, Bastien; Tangen, Thor Andreas; Ekroll, Ingvild Kinn; Rolim, Natale Pinheiro Lage; Torp, Hans; Bjåstad, Tore. (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

2012

• Jasaityte, Ruta; Heyde, Brecht; Ferferieva, Vesselina; Amundsen, Brage H.; Barbosa, Daniel; Loeckx, Dirk. (2012) Comparison of a new methodology for the assessment of 3D myocardial strain from volumetric ultrasound with 2D speckle tracking. The International Journal of Cardiac Imaging
  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
• 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
• 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
• Mjølstad, Ole Christian; Snare, Sten Roar; Folkvord, Lasse; Helland, Frode; Grimsmo, Anders; Torp, Hans. (2012) Assessment of left ventricular function by GPs using pocket-sized ultrasound. Family Practice
  Academic article
• Prieur, Fabrice Jean Gabriel; Johansen, Tonni Franke; Holm, Sverre; Torp, Hans. (2012) Fast simulation of second harmonic ultrasound field using a quasi-linear method. Journal of the Acoustical Society of America
  Academic article
• Gao, Hang; Hergum, Torbjørn; Torp, Hans; D'hooge, Jan R M. (2012) Comparison of the performance of different tools for fast simulation of ultrasound data. Ultrasonics
  Academic article
• Fredriksen, Tonje Dobrowen; Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans. (2012) 2D Tracking Doppler: A New Method to Limit Spectral Broadening in Pulsed Wave Doppler. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Denarie, Bastien; Torp, Hans; Bjåstad, Tore. (2012) A novel approach for reducing Multi Line Transmission cross-talks using 2D transducer arrays. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Iversen, Daniel Høyer; Lindseth, Frank; Torp, Hans; Løvstakken, Lasse. (2012) Improved 3-D reconstruction of vascular flow based on plane wave imaging. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Thorstensen, Anders; Amundsen, Brage H.; Dalen, Håvard; Hala, Pavel; Kiss, Gabriel; Aase, Svein Arne. (2012) Strain rate imaging combined with wall motion analysis gives incremental value in direct quantification of myocardial infarct size. European Heart Journal-Cardiovascular Imaging
  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
• Kiss, Gabriel; Thorstensen, Anders; Amundsen, Brage H.; Claus, Piet; D'hooge, Jan R M; Torp, Hans. (2012) Fusion of 3D echocardiographic and cardiac magnetic resonance volumes. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Brønstad, Espen Stene; Åsen, Jon Petter; Torp, Hans; Kiss, Gabriel. (2012) Visibility driven visualization of 3D cardiac ultrasound data on the GPU. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Ford, Steven Thomas; Viola, Ivan; Bruckner, Stefan; Torp, Hans; Kiss, Gabriel. (2012) HeartPad: real-time visual guidance for cardiac ultrasound. ACM Digital Library
  Academic chapter/article/Conference paper
• 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
• Snare, Sten Roar; Mjølstad, Ole Christian; Orderud, Fredrik; Dalen, Håvard; Torp, Hans. (2012) Automated septum thickness measurement-A Kalman filter approach. Computer Methods and Programs in Biomedicine
  Academic article
• Snare, Sten Roar; Torp, Hans; Orderud, Fredrik; Haugen, Bjørn Olav. (2012) Real-time Scan Assistant for Echocardiography. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article

2011

• 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
• Brekke, Birger; Torp, Hans; Bjåstad, Tore; Støylen, Asbjørn; Aase, Svein Arne. (2011) 3D Tissue Doppler imaging with ultra high frame rate. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Kiss, Gabriel; Åsen, Jon Petter; Bogaert, Jan; Amundsen, Brage H.; Claus, Piet; D'hooge, Jan R M. (2011) Multi-modal cardiac image fusion and visualization on the GPU. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Fredriksen, Tonje Dobrowen; Torp, Hans; Hergum, Torbjørn. (2011) Quantification of Mitral Regurgitation Using PW Doppler and Parallel Beamforming. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Aase, Svein Arne; Snare, Sten Roar; Dalen, Håvard; Støylen, Asbjørn; Orderud, Fredrik; Torp, Hans. (2011) Echocardiography without electrocardiogram. European Heart Journal-Cardiovascular Imaging
  Academic article
• Snare, Sten Roar; Mjølstad, Ole Christian; Orderud, Fredrik; Haugen, Bjørn Olav; Torp, Hans. (2011) Fast Automatic Measurement of Mitral Annulus Excursion Using a Pocket-Sized Ultrasound System. Ultrasound in Medicine and Biology
  Academic article
• Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2011) Change in left ventricular vortex flow before and after surgery for coarctation of the aorta in an infant shown with plane wave imaging and flow speckle tracking. Cardiology in the Young
  Abstract
• Mjølstad, Ole Christian; Snare, Sten Roar; Folkvord, Lasse; Helland, Frode; Torp, Hans; Haraldseth, Olav. (2011) Non-expert assessment of left ventricular systolic function using pocket-sized ultrasound. European Heart Journal-Cardiovascular Imaging
  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

2010

• Kiss, Gabriel; Steen, Erik; Åsen, Jon Petter; Torp, Hans. (2010) GPU volume rendering in 3D echocardiography: real-time preprocessing and ray-casting. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2010) Retrospective PW-Doppler based on spatiotemporal adaptive signal processing. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Skaug, Thomas Renhult; Amundsen, Brage H.; Hergum, Torbjørn; Torp, Hans; Haugen, Bjørn Olav. (2010) Quantification of aortic regurgitation using high pulse repetition frequency 3D color Doppler. European Heart Journal-Cardiovascular Imaging
  Abstract
• Mjølstad, Ole Christian; Snare, Sten Roar; Folkvord, Lasse; Helland, Frode; Torp, Hans; Grimsmo, Anders. (2010) Non-expert assessment of left ventricular global contractility using pocket sized ultrasound machines. MITAT. Minimally invasive therapy & allied technologies
  Abstract
• 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
• 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
• Aase, Svein Arne; Ingul, Charlotte Bjørk; Thorstensen, Anders; Torp, Hans; Støylen, Asbjørn. (2010) Aortic Valve Closure: Relation to Tissue Velocities by Doppler and Speckle Tracking in Patients with Infarction and at High Heart Rates. Echocardiography
  Academic article
• Dalen, Håvard; Thorstensen, Anders; Aase, Svein Arne; Ingul, Charlotte Bjørk; Torp, Hans; Vatten, Lars Johan. (2010) Segmental and global longitudinal strain and strain rate based on echocardiography of 1266 healthy individuals: the HUNT study in Norway. European Heart Journal-Cardiovascular Imaging
  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
• Skaug, Thomas Renhult; Hergum, Torbjørn; Amundsen, Brage H.; Skjærpe, Terje; Torp, Hans; Haugen, Bjørn Olav. (2010) Quantification of Mitral Regurgitation Using High Pulse Repetition Frequency Three-Dimensional Color Doppler. Journal of the American Society of Echocardiography
  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
• Løvstakken, Lasse; Torp, Hans. (2010) Extended Velocity Range in Color Flow Imaging using Parallel Receive Beamforming. IEEE International Ultrasonics Symposium Proceedings
  Academic article

2009

• Kiss, Gabriel; Nielsen, Espen; Orderud, Fredrik; Torp, Hans. (2009) Performance optimization of block matching in 3D echocardiography. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Barbosa, Daniel; Kiss, Gabriel; Claus, Piet; Hristova, Krasimira; Amundsen, Brage H.; Loeckx, Dirk. (2009) A comparison between methods for automatic quantification of global left ventricular function. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Kiss, Gabriel; Barbosa, Daniel; Hristova, Krasimira; Crosby, Jonas; Orderud, Fredrik; Claus, Piet. (2009) Assessment of Regional Myocardial Function Using 3D Cardiac Strain Estimation: Comparison Against Conventional Echocardiographic Assessment. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Skaug, Thomas Renhult; Hergum, Torbjørn; Skjærpe, Terje; Amundsen, Brage H.; Torp, Hans; Haugen, Bjørn Olav. (2009) Quantification of mitral regurgitation using HPRF 3D color Doppler. European Heart Journal-Cardiovascular Imaging
  Abstract
• 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
• Vasseljen, Ottar; Fladmark, Anne Margrethe; Westad, Christian; Torp, Hans. (2009) Onset in abdominal muscles recorded simultaneously by ultrasound imaging and intramuscular electromyography. Journal of Electromyography & Kinesiology
  Academic article
• Hergum, Torbjørn; Langeland, Stian; Remme, Espen W.; Torp, Hans. (2009) Fast Ultrasound Imaging Simulation in K-space. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Snare, Sten Roar; Aase, Svein Arne; Mjølstad, Ole Christian; Dalen, Håvard; Orderud, Fredrik; Torp, Hans. (2009) Automatic Real-time View Detection. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Crosby, Jonas; Amundsen, Brage H.; Hergum, Torbjørn; Remme, Espen; Langeland, Stian; Torp, Hans. (2009) 3-D Speckle Tracking for Assessment of Regional Left Ventricular Function. Ultrasound in Medicine and Biology
  Academic article
• Hergum, Torbjørn; Skaug, Thomas Renhult; Matre, Knut; Torp, Hans. (2009) Quantification of Valvular Regurgitation Area and Geometry Using HPRF 3-D Doppler. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Bjåstad, Tore Grüner; Aase, Svein Arne; Torp, Hans. (2009) Synthetic Transmit Beam Technique in an Aberrating Environment. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  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
• Amundsen, Brage H.; Crosby, Jonas; Steen, PA; Torp, Hans; Slørdahl, Stig Arild; Støylen, Asbjørn. (2009) Regional myocardial long-axis strain and strain rate measured by different tissue Doppler and speckle tracking echocardiography methods: a comparison with tagged magnetic resonance imaging. European Heart Journal-Cardiovascular Imaging
  Academic article
• Crosby, Jonas; Amundsen, Brage H; Hergum, Torbjørn; Remme, Espen W.; Langeland, Stian; Torp, Hans. (2009) 3-D Speckle Tracking for Assessment of Regional Left Ventricular Function. Ultrasound in Medicine and Biology
  Academic article
• Crosby, Jonas; Hergum, Torbjørn; Remme, Espen W.; Torp, Hans. (2009) The Effect of Including Myocardial Anisotropy in Simulated Ultrasound Images of the Heart. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Orderud, Fredrik; Torp, Hans; Rabben, Stein Inge. (2009) Automatic Alignment of Standard Views in 3D Echocardiograms Using Real-time Tracking. Proceedings of SPIE, the International Society for Optical Engineering
  Academic article
• Orderud, Fredrik; Kiss, Gabriel; Torp, Hans. (2009) Automatic coupled segmentation of endo- and epicardial borders in 3D echocardiography. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Crosby, Jonas; Torp, Hans; Remme, Espen W.; Skallerud, Bjørn Helge. (2009) Ultrasound-based quantification of myocardial deformation and rotation. Doktoravhandlinger ved NTNU (33)
  Doctoral dissertation
• Hergum, Torbjørn; Langeland, Stian; Remme, Espen W.; Torp, Hans. (2009) Fast Ultrasound Imaging Simulation in K-space. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Crosby, Jonas; Hergum, Torbjørn; Remme, Espen W.; Torp, Hans. (2009) The effect of including myocardial anisotropy in simulated ultrasound images of the heart. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Bjåstad, Tore Grüner; Torp, Hans. (2009) Single-Pulse Tissue Doppler Using Synthetic Transmit Beams. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Frijlink, Martijn Egbert; Løvstakken, Lasse; Torp, Hans. (2009) Investigation of transmit and receive performance at the fundamental and third harmonic resonance frequency of a medical ultrasound transducer. Ultrasonics
  Academic article
• Swillens, Abigail; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2009) Two-dimensional flow velocity estimation in the carotid bifurcation: a study of crossed-beam vector Doppler and speckle tracking using computational fluid dynamics. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• 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

2008

• Skaug, Thomas Renhult; Hergum, Torbjørn; Torp, Hans; Haugen, Bjørn Olav. (2008) Quantification of mitral regurgitation- a new three-dimensional (3D) Doppler method. European Heart Journal-Cardiovascular Imaging
  Abstract
• 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
• Aase, Svein Arne; Torp, Hans; Amundsen, Brage H.; Bjåstad, Tore; Støylen, Asbjørn. (2008) Peak sysotlic velocity by upper edge of pulsed wave tissue Doppler spectrums cause overestimation compared to M-mode in normal subjects. European Heart Journal-Cardiovascular Imaging
  Abstract
• Orderud, Fredrik; Kiss, Gabriel; Langeland, Stian; Remme, Espen W.; Torp, Hans; Rabben, Stein Inge. (2008) Combining Edge Detection With Speckle-Tracking for Cardiac Strain Assessment in 3D echocardiography. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• 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
• Amundsen, Brage H.; Crosby, Jonas; Steen, Per Arvid; Torp, Hans; Slørdahl, Stig Arild; Støylen, Asbjørn. (2008) Regional myocardial long-axis strain and strain rate measured by different tissue Doppler and speckle tracking echocardiography methods –a comparison with tagged magnetic resonance imaging. European Heart Journal-Cardiovascular Imaging
  Academic article
• Snare, Sten Roar; Torp, Hans. (2008) Estimating Frequency Dependent Attenuation to Improve Automatic Time Gain Compensation in B-mode Imaging. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Aase, Svein Arne; Torp, Hans; Støylen, Asbjørn. (2008) Aortic valve closure: relation to tissue velocities by Doppler and speckle tracking in normal subjects. European Heart Journal-Cardiovascular Imaging
  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
• Crosby, Jonas; Amundsen, Brage H.; Helle-Valle, T; Steen, Per Arvid; Torp, Hans. (2008) A new tissue Doppler method for examination of left ventricular rotation. Ultrasound in Medicine and Biology
  Academic article
• Austeng, Andreas; Bjåstad, Tore; Synnevåg, Johan-Fredrik; Måsøy, Svein-Erik; Torp, Hans; Holm, Sverre. (2008) Sensitivity of Minimum Variance Beamforming to Tissue Aberrations. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Aase, Svein Arne; Torp, Hans. (2008) Methods for improving quality and efficiency in quantitative echocardiography - Aspects of using high frame rate. NTNU, Det medisinske fakultet
  Doctoral dissertation
• Amundsen, Brage H.; Slørdahl, Stig Arild; Støylen, Asbjørn; Torp, Hans. (2008) Myocardial function quantified by speckle tracking and tissue Doppler echocardiography – Validation and application in exercise testing and training. NTNU
  Doctoral dissertation

2007

• 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
• Solberg, Ole Vegard; Lindseth, Frank; Torp, Hans; Blake, Richard; Hernes, Toril A. Nagelhus. (2007) Freehand 3D ultrasound reconstruction algorithms - A review. Ultrasound in Medicine and Biology
  Academic literature review
• 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
• 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
• 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
• 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
• 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
• Brekke, Svein; Rabben, SI; Støylen, Asbjørn; Haugen, A; Haugen, GU; Steen, EN. (2007) Volume stitching in three-dimensional echocardiography: Distortion analysis and extension to real time. Ultrasound in Medicine and Biology
  Academic article
• Bjåstad, Tore; Aase, Svein Arne; Torp, Hans. (2007) The Impact of Aberration on High Frame Rate Cardiac B-Mode Imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Løvstakken, Lasse; Bjærum, Steinar; Torp, Hans. (2007) Optimal velocity estimation in ultrasound Color Flow Imaging in presence of clutter. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Hergum, Torbjørn; Bjåstad, Tore; Torp, Hans. (2007) Parallel beamforming using synthetic transmit beams. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article

2006

• Dahl, Haldis Haug; Vasseljen, Ottar; Mork, Paul Jarle; Torp, Hans. (2006) High frame-rate ultrasound imaging to access motor control. Journal of Orthopaedic and Sports Physical Therapy
  Abstract
• Blaas, Harm-Gerd; Taipale, Pekka; Torp, Hans; Eik-Nes, Sturla. (2006) Volumberegning av humane embryos og tidlige foster med hjelp av tredimensjonal ultralyd: En studie om volummålinger og dens reproduserbarhet. Gynekologen
  Abstract
• Løvstakken, Lasse; Tangen, Thor Andreas; Bjærum, Steinar; Torp, Hans. (2006) Optimal velocity estimation in ultrasound Color Flow Imaging in presence of clutter noise. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Vasseljen, Ottar; Dahl, Haldis Haug; Mork, Paul Jarle; Torp, Hans. (2006) Muscle activity onset in the lumbar multifidus muscle recorded simultaneously by ultrasound imaging and intramuscular electromyography. Clinical Biomechanics
  Academic article
• Blaas, Harm-Gerd; Taipale, Pekka; Torp, Hans; Eik-Nes, Sturla. (2006) Three-dimensional ultrasound volume calculations of human embryos and young fetuses: a study on the volumetry of compound structures and its reproducibility. Ultrasound in Obstetrics and Gynecology
  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
• Brekke, Svein; Ingul, Charlotte Bjørk; Aase, Svein Arne; Torp, Hans. (2006) Increasing frame rate in ultrasound imaging by temporal morphing using tissue Doppler. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Malm, Siri; Frigstad, Sigmund; Støylen, Asbjørn; Torp, Hans; Sagberg, Einar; Skjærpe, Terje. (2006) Effects of ultrasound contrast during tissue velocity imaging on regional left ventricular velocity, strain, and strain rate measurements. Journal of the American Society of Echocardiography
  Academic article
• Løvstakken, Lasse; Bjærum, Steinar; Martens, Ditlef; Torp, Hans. (2006) Blood flow imaging - A new real-time, 2-D flow imaging technique. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Amundsen, Brage H.; Helle-Valle, T; Edvardsen, Thor; Torp, Hans; Crosby, Jonas; Lyseggen, Erik. (2006) Noninvasive myocardial strain measurement by speckle tracking echocardiography - Validation against sonomicrometry and tagged magnetic resonance imaging. Journal of the American College of Cardiology
  Academic article
• Malm, Siri; Frigstad, Sigmund; Torp, Hans; Wiseth, Rune; Skjærpe, Terje. (2006) Quantitative adenosine real-time myocardial contrast echocardiography for detection of angiographically significant coronary artery disease. Journal of the American Society of Echocardiography
  Academic article
• Aase, Svein Arne; Støylen, Asbjørn; Ingul, Charlotte Bjørk; Frigstad, Sigmund; Torp, Hans. (2006) Automatic timing of aortic valve closure in apical tissue Doppler images. Ultrasound in Medicine and Biology
  Academic article

2005

• Pettersen, Viggo; Bjørkøy, Kåre; Torp, Hans; Westgaard, Rolf Harald. (2005) Neck and shoulder muscle activity and thorax movement in singing and speaking tasks. With variation in vocal loudness and pitch. Journal of Voice
  Academic article
• Ingul, Charlotte Bjørk; Støylen, Asbjørn; Slørdahl, Stig Arild; Bjørnstad, Knut; Aase, Svein Arne; Torp, Hans. (2005) Automated peak systolic strain rate increases the accuracy of dobutamine stress echocardiography. European Heart Journal
  Abstract
• Malm, Siri; Støylen, Asbjørn; Sagberg, Einar; Torp, Hans; Amundsen, Brage H.; Skjærpe, Terje. (2005) Fractional myocardial infarct area size estimated by reconstructed 3-dimensional parametric strain rate imaging. European Heart Journal-Cardiovascular Imaging
  Abstract
• Aase, Svein Arne; Støylen, Asbjørn; Ingul, Charlotte Bjørk; Frigstad, Sigmund; Torp, Hans. (2005) Automatic timing of aortic valve closure using tissue Doppler imaging. European Heart Journal-Cardiovascular Imaging
  Abstract
• Hansegård, Jøger; Steen, Erik; Rabben, Stein Inge; Torp, Anders; Torp, Hans; Frigstad, Sigmund. (2005) Knowledge Based Extraction of the Left Ventricular Endocardial Boundary from 2D Echocardiograms. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Hansegård, Jøger; Urheim, Stig; Steen, Erik; Torp, Hans; Olstad, Bjørn; Malm, Siri. (2005) Detection of the myocardial boundary in the left ventricle from simultaneously acquired triplane ultrasound images using multi view active appearance motion models. IEEE International Ultrasonics Symposium Proceedings
  Academic article
• Hansegaard, J; Urheim, S; Steen, Erik; Torp, Hans; Olstad, Bjørn; Malm, Siri. (2005) Automatic left ventricular volume measurements from simultaneously aquired triplane echocardiograms. European Heart Journal-Cardiovascular Imaging
  Academic article
• Helle-Valle, Thomas; Crosby, Jonas; Edvardsen, Thor; Lyseggen, Erik; Amundsen, Brage H.; Smith, Hans-Jørgen. (2005) New noninvasive method for assessment of left ventricular rotation: speckle tracking echocardiography. Circulation
  Academic article
• Pettersen, Viggo; Bjørkøy, Kåre; Torp, Hans; Westgaard, Rolf Harald. (2005) Neck and shoulder muscle activity and thorax movement in singing and speaking tasks with variation in vocal loudness and pitch. Journal of Voice
  Academic article
• Helle-valle, Thomas; Crosby, Jonas; Edvardsen, Thor; Lyseggen, Erik; Amundsen, Brage H.; Smith, Hans-jørgen. (2005) New Noninvasive Method for Assessment of Left Ventricular Rotation: Speckle Tracking Echocardiography. Circulation
  Academic article
• Ingul, Charlotte Bjørk; Torp, Hans; Aase, Svein Arne; Berg, Sigrid; Støylen, Asbjørn; Slørdahl, Stig Arild. (2005) Automated analysis of strain rate and strain: Feasibility and clinical implications. Journal of the American Society of Echocardiography
  Academic article

2004

• Brekke, Svein; Tegnander, Eva; Torp, Hans; Eik-Nes, Sturla. (2004) Tissue Doppler gated (TDOG) dynamic three-dimensional ultrasound imaging of the fetal heart. Ultrasound in Obstetrics and Gynecology
  Academic article

2003

• Kirkhorn, Johan; Bjærum, Steinar; Olstad, Bjørn; Kristoffersen, Kjell; Torp, Hans. (2003) A New Technique for Improved Spatial Resolution in High Frame Rate Color Doppler Imaging. Proceedings - IEEE Ultrasonics Symposium
  Academic article
• Støylen, Asbjørn; Ingul, Charlotte Bjørk; Torp, Hans. (2003) Strain and Strain Rate Parametric Imaging. A new Method for Post Processing to 3- / 4-dimensional images from three standard apical planes. Preliminary Data on Feasibility, Artefact and Regional Dyssynergy Visualisation. Cardiovascular Ultrasound
  Academic article

2002

• Haugen, Bjørn Olav; Berg, Sevald; Brecke, Kjell Morten; Torp, Hans; Slørdahl, Stig Arild; Skjærpe, Terje. (2002) Blood flow velocity profiles in the aortic annulus: A 3-dimensional freehand color flow Doppler imaging study. Journal of the American Society of Echocardiography
  Academic article
• Bjærum, Steinar; Torp, Hans; Kristoffersen, Kjell. (2002) Clutter Filter Design for Ultrasound Color Flow Imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Haaverstad, Rune; Vitale, Nicola; Tjomsland, Ole; Tromsdal, Arve; Torp, Hans; Samstad, Stein. (2002) Intraoperative color doppler ultrasound assessment of LIMA-to-LAD anastenoses in off-pump coronary artery bypass grafting. Annals of Thoracic Surgery
  Academic article
• Haaverstad, Rune; Vitale, Nicola; Tjomsland, Ole; Tromsdal, Arve; Torp, Hans; Samstad, Stein. (2002) Intraoperative color Doppler Ultrasound assessment of LIMA-LAD anatamoses in off-pump coronary artery bypass surgery. Annals of Thoracic Surgery
  Academic article
• Rabben, Stein Inge; Bjærum, Steinar; Torp, Hans; Sørhus, Vidar. (2002) Ultrasound-based vessel wall tracking: an auto-correlation technique with RF center frequency estimation. Ultrasound in Medicine and Biology
  Academic article
• Bjærum, Steinar; Torp, Hans. (2002) Clutter Filters Adapted to Tissue Motion in Ultrasound Color Flow Imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Haaverstad, Rune; Samstad, Stein; Torp, Hans. (2002) "Blood motion imaging" - enforbedret ultralyd teknikk for hjerte-kar undersøkelser. Viteskapelige forhandlinger
  Report

2001

• Slørdahl, Stig Arild; Bjærum, Steinar; Amundsen, Brage; Støylen, Asbjørn; Heimdal, Andreas; Torp, Hans. (2001) High frame rate strain rate imaging of the ventricular septum in healthy subjects. European Journal of Ultrasound
  Academic article
• Kirkhorn, Johan; Torp, Hans. (2001) Three-Stage Approach to Ultrasound Contrast Detection. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Haugen, Bjørn Olav; Bjærum, Steinar; Samstad, Stein; Skjærpe, Terje; Torp, Hans. (2001) A new method describing cross-sectional blood flow velocity profiles in the left ventricular outflow tract of patients with atrial fibrillation with the use of high- frame rate 2-dimensional color flow imaging. Journal of the American Society of Echocardiography
  Academic article
• Frinking, Peter J.A.; Céspedes, E. Ignacio; Kirkhorn, Johan; Torp, Hans; de Jong, Nico. (2001) A New Ultrasound Contrast Imaging Approach Based on the Combination of Multiple Imaging Pulses and a Separate Release Burst. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Mele, Donato; Schwammenthal, E.; Torp, Hans. (2001) A semiautomated objective technique for applying the proximal isovelocity surface area method to quantitate mitral regurgitation: Clinical studies with the digital flow map. American Heart Journal
  Academic article
• Slørdahl, Stig A.; Bjærum, Steinar; Amundsen, Brage H.; Støylen, Asbjørn; Heimdal, Andreas; Rabben, Stein Inge. (2001) High frame rate strain rate imaging of the interventricular septum in healthy subjects. European Journal of Ultrasound
  Academic article
• Bjærum, Steinar; Heimdal, Andreas; Torp, Hans; Amundsen, Bjørn; Slørdahl, Stig A.; Olstad, B.. (2001) High frame rate tissue Doppler and strain rate imaging.
  Academic chapter/article/Conference paper

2000

• Isaksen, Christina Vogt; Eik-Nes, Sturla; Blaas, Harm-Gerd; Torp, Hans. (2000) Fetuses and infants with congenital urinary system anomalies: Correlation between prenatal ultrasound and postmortem findings. Ultrasound in Obstetrics and Gynecology
  Academic article
• Berg, Sevald; Torp, Hans; Blaas, Harm-Gerd. (2000) Accuracy of in-vitro volume estimation of small structures using three-dimensional ultrasound. Ultrasound in Medicine and Biology
  Academic article
• Isaksen, Christina Vogt; Eik-Nes, Sturla; Blaas, Harm-Gerd; Torp, Hans; van der Hagen, Carl Birger; Ormerod, Eli. (2000) A correlative study of prenatal ultrasound and post-mortem findings in fetuses and infants with an abnormal karyotype. Ultrasound in Obstetrics and Gynecology
  Academic article
• Stoylen, A; Heimdal, Andreas; Bjornstad, K; Wiseth, Rune; Vik-Mo, Harald; Torp, Hans. (2000) Strain Rate Imaging by Ultrasound in the Diagnosis of Coronary Artery Disease. Journal of the American Society of Echocardiography
  Academic article
• Haugen, Bjørn Olav; Berg, Sevald; Brecke, Kjell Morten; Samstad, Stein; Skjærpe, Terje; Slørdahl, Stig Arild. (2000) Measurement of volumetric mitral and aortic blood flow based on a new freehand three-dimensional colour flow imaging method. An in vivo validation. European Heart Journal-Cardiovascular Imaging
  Academic article
• Berg, Seval; Torp, Hans; Haugen, Bjørn Olav; Samstad, Stein. (2000) Volumetric blood flow measurement with the use of dynamic 3-dimensional ultrasound color flow imaging. Journal of the American Society of Echocardiography
  Academic article
• Haugen, Bjørn Olav; Berg, Sevald; Brecke, Kjell Morten; Samstad, Stein; Slørdahl, Stig Arild; Skjærpe, Terje. (2000) Velocity profiles in mitral blood flow based on three-dimensional freehand colour flow imaging acquired at high frame rate. European Heart Journal-Cardiovascular Imaging
  Academic article
• Urheim, Stig; Edvardsen, T.; Torp, Hans; Smiseth, Otto. (2000) Myocardial strain by Doppler echocardiography. Validation of a new method to quantify regional myocardial function. Circulation
  Academic article
• Bjærum, Steinar; Torp, Hans. (2000) Statistical Evaluation of Clutter Filters in Color Flow Imaging. Ultrasonics
  Academic article
• Stoylen, A.; Heimdal, Andreas; Bjornstad, K.; Wiseth, Rune; Vik-Mo, Harald; Torp, Hans. (2000) Strain Rate Imaging by Ultrasound in the Diagnosis of Coronary Artery Disease. Journal of the American Society of Echocardiography
  Academic article
• Urheim, Stig; Edvardsen, Thor; Torp, Hans; Angelsen, Bjørn A. J.; Smiseth, Otto A.. (2000) Myocardial strain by Doppler echocardiography. Validation of a new method to quantify regional mayocardial function. Circulation
  Academic article

1999

• Berg, Seval; Torp, Hans; Martens, Ditlef; Steen, Erik; Samstad, Stein; Høivik, Inge. (1999) Dynamic three-dimensional freehand echocardiography using raw digital ultrasound data. Ultrasound in Medicine and Biology
  Academic article
• Støylen, Asbjørn; Heimdal, Andreas; Bjørnstad, Knut; Torp, Hans; Skjærpe, Terje. (1999) Strain rate imaging by ultrasound in the diagnosis of regional dysfunction of the left ventricle. Echocardiography
  Academic article

1998

• Blaas, Harm-Gerd; Eik-Nes, Sturla; Berg, Sevald; Torp, Hans. (1998) In-vivo three-dimensional ultrasound reconstructions of embryos and early featuses. The Lancet
  Academic article
• Isaksen, Christina Vogt; Eik-Nes, Sturla; Blaas, Harm-Gerd; Torp, Hans. (1998) Comparison of prenatal ultrasound and postmortem findings in fetuses and infants with central nervous system anomalies. Ultrasound in Obstetrics and Gynecology
  Academic article
• Heimdal, Andreas; Støylen, Asbjørn; Torp, Hans; Skjærpe, Terje. (1998) Real-Time Strain Rate Imaging of the Left Ventricle by Ultrasound. Journal of the American Society of Echocardiography
  Academic article
• Blaas, Harm-Gerd; Eik-Nes, Sturla; Berg, Sevald; Torp, Hans. (1998) In-vivo three-dimensional ultrasound reconstructions of embryos and early fetuses. The Lancet
  Academic article

1997

• Bjørnstad, Knut; Aakhus, Sven; Torp, Hans. (1997) How does computer-assisted digital wall motion analysis influence observer agreement and diagnostic accuracy during stress echocardiography?. The International Journal of Cardiac Imaging
  Academic article
• Lai, Xiaoming; Torp, Hans; Kristoffersen, Kjell. (1997) An extended autocorrelation method for estimation of blood velocity. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Heimdal, Andreas; Torp, Hans. (1997) Ultrasound doppler measurements of low velocity blood flow : limitations due to clutter signals from vibrating muscles. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article

1996

• Torp, Hans; Kristoffersen, Kjell; Angelsen, Bjørn Atle J.. (1996) On the joint probability density function for the autocorrelation estimates in ultrasound color flow imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Bjørnstad, Knut; Mæhle, Jørgen; Aakhus, Svend; Torp, Hans; Hatle, Liv K.; Angelsen, Bjørn Atle J.. (1996) Evaluation of reference systems for quantitative wall motion analysis from three-dimensional endocardial surface reconstruction : an echocardiographic study in subjects with and without myocardial infarction. American Journal of Cardiac Imaging
  Academic article
• Grønningsæter, Åge; Angelsen, Bjørn Atle J.; Heimdal, Andreas; Torp, Hans. (1996) Vessel wall detection and blood noise reduction in intravascular ultrasound imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
  Academic article
• Lingjærde, Odd; Bela, M; Krüger, Marit Bjartveit; Dahle, LG; Fossheim, I; Helle, J.R.. (1996) Improvement patterns in schizophrenic. Nordic Journal of Psychiatry
  Academic article

1995

• Angelsen, Bjørn A. J.; Torp, Hans; Holm, Sverre; Kristoffersen, Kjell; Whittingham, T. A.. (1995) Which transducer array is best?. European Journal of Ultrasound
  Academic article