Hans Garman Torp

About

Research interests: Medical ultrasound technology, Doppler blood flow imaging, Wave propagation and beam forming. Head of ultrasound research group.

Ultrasound

Publications

2025

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
Leth-Olsen, Martin; Døhlen, Gaute; Torp, Hans; Nyrnes, Siri Ann. (2025) Continuous cerebral Doppler monitoring in infants with congenital heart disease. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation

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
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
Jarmund, Anders Hagen; Kristiansen, Steinar; Leth-Olsen, Martin; Vogt, Ella Christina Stray; Nervik, Ingunn; Torp, Hans. (2024) Perioperativ cerebral emboli-deteksjon med høy-frekvent Doppler-ultralyd. Ultraschall in der Medizin
Abstract
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
Faldaas, Bjørn Ove; Storm, Benjamin Stage; Lappegård, Knut Tore; How, Ole-Jakob; Nilsen, Bent Aksel; Kiss, Gabriel Hanssen. (2024) A hands-free carotid Doppler can identify spontaneous circulation without interrupting cardiopulmonary resuscitation: an animal study. Intensive Care Medicine Experimental
Academic article
Jarmund, Anders Hagen; Kristiansen, Steinar; Leth-Olsen, Martin; Vogt, Ella Christina Stray; Nervik, Ingunn; Torp, Hans. (2024) Perioperative Detection of Cerebral Fat Emboli From Bone Using High-Frequency Doppler Ultrasound. Ultrasound in Medicine and Biology
Academic article
Holst-Jæger, Emilie Christine; 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

2023

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
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
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
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
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

2022

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
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
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
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
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
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

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
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
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
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

2020

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
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
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
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
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
Grue, Jahn Frederik; Haugen, Bjørn Olav; Dalen, Håvard; Torp, Hans. (2020) Automatic measurements of mitral annular motion indices. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
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
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
Aakhus, Svend; Torp, Hans; Skjærpe, Terje. (2020) EFSUMB History of Ultrasound, Norway, Cardiology. EFSUMB EFSUMB
Report
Fiorentini, Stefano; Avdal, Jørgen; Torp, Hans; Wiseth, Rune; Hellevik, Leif Rune. (2020) 3-D Doppler imaging in cardiac applications using high frame-rate sequences. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
Torp, Hans. (2020) Introduction to shock-response spectra. Forsvarets forskningsinstitutt Forsvarets forskningsinstitutt
Report

2019

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
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
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
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
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
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
Fiorentini, Stefano; Ekroll, Ingvild Kinn; Torp, Hans; Avdal, Jørgen. (2019) Flowline tracking Doppler. Proceedings - IEEE Ultrasonics Symposium
Academic article
Wigen, Morten Smedsrud; Løvstakken, Lasse; Fadnes, Solveig; Torp, Hans. (2019) 4D ultrasound vector flow imaging for intraventricular flow assessment. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
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

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
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
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
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
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
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
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
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
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

2017

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
Karabiyik, Yucel; Løvstakken, Lasse; Ekroll, Ingvild Kinn; Torp, Hans; Eik-Nes, Sturla. (2017) Quantitative Doppler analysis using color flow imaging and adaptive signal processing. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
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
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
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
Storve, Sigurd; Torp, Hans. (2017) Fast simulation of dynamic ultrasound images using the GPU. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
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
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
Avdal, Jørgen; Torp, Hans. (2017) Fast ultrasound simulation method for evaluation of velocity estimators. Proceedings - IEEE Ultrasonics Symposium
Abstract
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
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
Rodriguez-Molares, Alfonso; Fatemi, Ali; Løvstakken, Lasse; Torp, Hans. (2017) Specular Beamforming. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
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
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; 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
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. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Masters thesis
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
Bech, Solveig; Salles, Sebastien; Torp, Hans. (2017) Comparison of 3D tissue motion estimation methods using transverse oscillations. Proceedings - IEEE Ultrasonics Symposium
Academic article
Bech, Solveig; Salles, Sebastien; Torp, Hans. (2017) Comparison of 3D tissue motion estimation methods using transverse oscillations. Proceedings - IEEE Ultrasonics Symposium
Abstract
Bech, Solveig; Torp, Hans; Salles, Sebastien. (2017) Motion Tracking by Transverse Oscillations in 3D Cardiac Ultrasound Imaging. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Masters thesis
Golfetto, Cristiana; Torp, Hans; Ekroll, Ingvild Kinn. (2017) Adaptive Clutter Filtering in High Frame Rate 3D Coronary Imaging. Proceedings - IEEE Ultrasonics Symposium
Academic article

2016

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
Karabiyik, Yucel; Avdal, Jørgen; Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2016) Data adaptive 2-D tracking Doppler. 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
Tortoli, Piero; Torp, Hans. (2016) Introduction to the Special Issue on Flow Measurement and Imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Editorial
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
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
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
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
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
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

2015

Fadnes, Solveig; Bjærum, Steinar; Torp, Hans; Løvstakken, Lasse. (2015) Clutter filtering influence on blood velocity estimation using speckle tracking. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Fadnes, Solveig; Ekroll, Ingvild Kinn; Nyrnes, Siri Ann; Torp, Hans; Løvstakken, Lasse. (2015) Robust angle-independent blood velocity estimation based on dual-angle plane wave imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
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
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
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
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
Rodriguez-Molares, Alfonso; Løvstakken, Lasse; Torp, Hans; Martin-Herrero, Julio; Bjåstad, Tore Grüner. (2015) Detection of the Intima-Lumen interface by coherent combination of RF scanlines. Proceedings - IEEE Ultrasonics Symposium
Academic article
Rodriguez-Molares, Alfonso; Torp, Hans; Denarie, Bastien; Løvstakken, Lasse. (2015) The angular apodization in coherent plane-wave compounding. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Torp, Hans; Rodriguez-Molares, Alfonso; Løvstakken, Lasse. (2015) Optimum beamformer strategy for detecting signals in clutter noise. Proceedings - IEEE Ultrasonics Symposium
Academic article
Rodriguez-Molares, Alfonso; Løvstakken, Lasse; Ekroll, Ingvild Kinn; Torp, Hans. (2015) Needle detection by image source localization. Proceedings - IEEE Ultrasonics Symposium
Academic article
Rodriguez-Molares, Alfonso; Løvstakken, Lasse; Ekroll, Ingvild Kinn; Torp, Hans. (2015) Reconstruction of specular reflectors by iterative image source localization. Journal of the Acoustical Society of America
Academic article
Storve, Sigurd; Torp, Hans. (2015) Use of B-splines in fast dynamic ultrasound RF simulations. 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
Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2015) Improved quality of freehand 3-D ultrasound color flow imaging by multi-angle compounding. Proceedings - IEEE Ultrasonics Symposium
Academic article
Avdal, Jørgen; Løvstakken, Lasse; Torp, Hans. (2015) Effects of reverberations and clutter filtering in pulsed Doppler using sparse sequences. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article

2014

Heger, Max; Stavdahl, Øyvind; Torp, Hans. (2014) Ultrasound Strain Rate Imaging of Individual Muscle Motor Units. IEEE International Ultrasonics Symposium Proceedings
Academic article
Fredriksen, Tonje Dobrowen; Avdal, Jørgen; Ekroll, Ingvild Kinn; Dahl, Torbjørn; Løvstakken, Lasse; Torp, Hans. (2014) Investigations of spectral resolution and angle dependency in a 2-D tracking doppler method. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
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
Iversen, Daniel Høyer; Løvstakken, Lasse; Lindseth, Frank; Torp, Hans. (2014) Improved Methods for Navigated 3-D Vascular Ultrasound Imaging. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181 (2014:190)
Doctoral dissertation
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
Fadnes, Solveig; Nyrnes, Siri Ann; Torp, Hans; Løvstakken, Lasse. (2014) Shunt flow evaluation in congenital heart disease based on two-dimensional speckle tracking. Ultrasound in Medicine and Biology
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2014) New ultrasound flow modalities for evaluation of congenital heart defects. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181 (2014:275)
Doctoral dissertation
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
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
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
Avdal, Jørgen; Ekroll, Ingvild Kinn; Fadnes, Solveig; Løvstakken, Lasse; Torp, Hans. (2014) 2D tracking doppler for cardiac jet flow velocity estimation. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Døhlen, Gaute; Skogvoll, Eirik; Torp, Hans; Skjærpe, Terje. (2014) Blood Flow Imaging in Transesophageal Echocardiography during Atrial Septal Defect Closure: A Comparison with the Current References. Echocardiography
Academic article
Fadnes, Solveig; Ekroll, Ingvild Kinn; Nyrnes, Siri Ann; Torp, Hans; Løvstakken, Lasse. (2014) Robust angle-independent blood velocity estimation based on multi-angle speckle tracking and vector Doppler. IEEE International Ultrasonics Symposium Proceedings
Academic article
Fredriksen, Tonje Dobrowen; Torp, Hans; Haugen, Bjørn Olav. (2014) Quantitative Doppler Methods in Cardiovascular Imaging. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181 (2014:312)
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

2013

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
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
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
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
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
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
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
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
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

2012

Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2012) Spectral Doppler Estimation Utilizing 2-D Spatial Information and Adaptive Signal Processing. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
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
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
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
Ford, Steven Thomas; Viola, Ivan; Bruckner, Stefan; Torp, Hans; Kiss, Gabriel. (2012) HeartPad: real-time visual guidance for cardiac ultrasound.
Academic chapter/article/Conference paper
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
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
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
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
Fredriksen, Tonje Dobrowen; Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans. (2012) 2D Tracking Doppler: A New Method to Limit Spectral Broadening in Pulsed Wave Doppler. Proceedings - IEEE Ultrasonics Symposium
Academic article
Ekroll, Ingvild Kinn; Dahl, Torbjørn; Torp, Hans; Løvstakken, Lasse. (2012) In vivo Vector Flow Imaing With Retrospective Pulsed Wave Doppler. Proceedings - IEEE Ultrasonics Symposium
Academic article
Fadnes, Solveig; Nyrnes, Siri Ann; Swillens, Abigail; Torp, Hans; Løvstakken, Lasse. (2012) Shunt quantification in congenital heart disease based on two-dimensional speckle tracking. Proceedings - IEEE Ultrasonics Symposium
Academic article
Iversen, Daniel Høyer; Lindseth, Frank; Torp, Hans; Løvstakken, Lasse. (2012) Model-based correction of angle-dependencies in navigated 3-D flow imaging during neurosurgical interventions. IEEE International Ultrasonics Symposium Proceedings
Abstract
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
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
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
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

2011

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
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
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2011) Change in left ventricular vortex flow before and after surgery for coarctation of the aorta in an infant shown with plane wave imaging and flow speckle tracking. Cardiology in the Young
Abstract
Alnes, Solveig Søvik; Swillens, Abigail; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2011) Clutter filtering issues in speckle tracking for two-dimensional blood velocity estimation - a potential solution based on compounded imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article
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
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
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
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
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

2010

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
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
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
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
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
Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2010) Does a new ultrasound flow modality improve visualization of neonatal pulmonary veins?. Hjerteforum
Abstract
Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2010) Retrospective PW-Doppler based on spatiotemporal adaptive signal processing. IEEE International Ultrasonics Symposium Proceedings
Academic article
Løvstakken, Lasse; Torp, Hans. (2010) Extended Velocity Range in Color Flow Imaging using Parallel Receive Beamforming. IEEE International Ultrasonics Symposium Proceedings
Academic article
Hergum, Torbjørn; Bjåstad, Tore Grüner; Løvstakken, Lasse; Kristoffersen, Kjell; Torp, Hans. (2010) Reducing Color Flow Artifacts caused by Parallel Beamforming. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Swillens, Abigail Emily; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2010) Two-dimensional blood velocity estimation with ultrasound: speckle tracking versus crossed-beam vector Doppler based on flow simulations in a carotid bifurcation model. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
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
Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2010) Does a new ultrasound flow modality improve visualization of neonatal pulmonary veins?. Echocardiography
Academic article

2009

Lindseth, Frank; Løvstakken, Lasse; Rygh, Ola Morten; Tangen, Geir Arne; Torp, Hans; Unsgaard, Geirmund. (2009) Blood Flow Imaging: An Angle-Independent Ultrasound Modality for Intraoperative Assessment of Flow Dynamics in Neurovascular Surgery. Neurosurgery
Academic article
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
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
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
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
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
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
Kiss, Gabriel; Nielsen, Espen; Orderud, Fredrik; Torp, Hans. (2009) Performance optimization of block matching in 3D echocardiography. Proceedings - IEEE Ultrasonics Symposium
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
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
Crosby, Jonas; Torp, Hans; Remme, Espen W.; Skallerud, Bjørn Helge. (2009) Ultrasound-based quantification of myocardial deformation and rotation. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181; 2009:33 (Dissertations at the Faculty of Medicine, 0805-7680; 384)
Doctoral dissertation
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
Bjåstad, Tore Grüner; Torp, Hans. (2009) Single-Pulse Tissue Doppler Using Synthetic Transmit Beams. 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
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
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
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
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
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
Swillens, A; Schryver, T De; Løvstakken, Lasse; Torp, Hans; Segers, P. (2009) Assessment of Numerical Simulation Strategies for Ultrasonic Color Blood Flow Imaging, Based on a Computer and Experimental Model of the Carotid Artery. Annals of Biomedical Engineering
Academic article
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; 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

2008

Frijlink, Martijn Egbert; Løvstakken, Lasse; Torp, Hans. (2008) Fundamental and Third Harmonic Operation of a Medical Phased Array Transducer. IEEE International Ultrasonics Symposium Proceedings
Academic article
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
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
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. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181 (2008:26)
Doctoral dissertation
Aase, Svein Arne; Torp, Hans. (2008) Methods for improving quality and efficiency in quantitative echocardiography: Aspects of using high frame rate. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181 (2008:53)
Doctoral dissertation
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
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
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
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
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
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
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
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
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

2007

Hergum, Torbjørn; Bjåstad, Tore; Torp, Hans. (2007) Parallel beamforming using synthetic transmit beams. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
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
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; 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
Oddershede, Niels; Løvstakken, Lasse; Torp, Hans; Jensen, Jørgen A.. (2007) Multi-dimensional spectrum analysis for 2-D vector velocity estimation. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2007) A new ultrasound modality to visualise atrial septal defect flow in children. European Heart Journal-Cardiovascular Imaging
Abstract
Løvstakken, Lasse; Orderud, Fredrik; Torp, Hans. (2007) Real-time Indication of Acoustic Window for Phased-Array Transducers in Ultrasound Imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article
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
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2007) Blood Flow Imaging - A New Angle-Independent Ultrasound Modality for the Visualization of Flow in Atrial Septal Defects in Children. Echocardiography
Academic article
Løvstakken, Lasse; Bjærum, Steinar; Torp, Hans. (2007) Optimal velocity estimation in ultrasound Color Flow Imaging in presence of clutter. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Khalid, Ibrahim; Løvstakken, Lasse; Kirkeby-Garstad, Idar; Torp, Hans; Vik-Mo, Harald; Haaverstad, Rune. (2007) Effect of the Cardiac Cycle on the Coronary Anastomosis Assessed by Ultrasound. Asian Cardiovascular and Thoracic Annals
Academic article

2006

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

2005

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
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
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
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
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
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
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
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
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
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

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

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
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
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
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
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; Samstad, Stein; Torp, Hans. (2002) "Blood motion imaging" - enforbedret ultralyd teknikk for hjerte-kar undersøkelser. Viteskapelige forhandlinger Viteskapelige forhandlinger
Report

2001

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
Frinking, Peter J.A.; Céspedes, E. Ignacio; Kirkhorn, Johan; Torp, Hans; Jong, Nico de. (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
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
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

2000

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
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
Bjærum, Steinar; Torp, Hans. (2000) Statistical Evaluation of Clutter Filters in Color Flow Imaging. Ultrasonics
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
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
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
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
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; Hagen, Carl Birger van der; 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

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
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
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

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
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
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

1996

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
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
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
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

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

Journal publications

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
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
Jarmund, Anders Hagen; Kristiansen, Steinar; Leth-Olsen, Martin; Vogt, Ella Christina Stray; Nervik, Ingunn; Torp, Hans. (2024) Perioperativ cerebral emboli-deteksjon med høy-frekvent Doppler-ultralyd. Ultraschall in der Medizin
Abstract
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
Faldaas, Bjørn Ove; Storm, Benjamin Stage; Lappegård, Knut Tore; How, Ole-Jakob; Nilsen, Bent Aksel; Kiss, Gabriel Hanssen. (2024) A hands-free carotid Doppler can identify spontaneous circulation without interrupting cardiopulmonary resuscitation: an animal study. Intensive Care Medicine Experimental
Academic article
Jarmund, Anders Hagen; Kristiansen, Steinar; Leth-Olsen, Martin; Vogt, Ella Christina Stray; Nervik, Ingunn; Torp, Hans. (2024) Perioperative Detection of Cerebral Fat Emboli From Bone Using High-Frequency Doppler Ultrasound. Ultrasound in Medicine and Biology
Academic article
Holst-Jæger, Emilie Christine; 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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Fiorentini, Stefano; Ekroll, Ingvild Kinn; Torp, Hans; Avdal, Jørgen. (2019) Flowline tracking Doppler. Proceedings - IEEE Ultrasonics Symposium
Academic article
Aakervik, Anne-Lise; Løvstakken, Lasse; Torp, Hans; Aakhus, Svend. (2019) Lydbølger som er viktig for helsa. Gemini
Popular scientific article
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Abstract
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
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Abstract
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Abstract
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Academic article
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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
Avdal, Jørgen; Ekroll, Ingvild Kinn; Fadnes, Solveig; Løvstakken, Lasse; Torp, Hans. (2014) 2D tracking doppler for cardiac jet flow velocity estimation. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Døhlen, Gaute; Skogvoll, Eirik; Torp, Hans; Skjærpe, Terje. (2014) Blood Flow Imaging in Transesophageal Echocardiography during Atrial Septal Defect Closure: A Comparison with the Current References. Echocardiography
Academic article
Fadnes, Solveig; Ekroll, Ingvild Kinn; Nyrnes, Siri Ann; Torp, Hans; Løvstakken, Lasse. (2014) Robust angle-independent blood velocity estimation based on multi-angle speckle tracking and vector Doppler. IEEE International Ultrasonics Symposium Proceedings
Academic article
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Fredriksen, Tonje Dobrowen; Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans. (2012) 2D Tracking Doppler: A New Method to Limit Spectral Broadening in Pulsed Wave Doppler. Proceedings - IEEE Ultrasonics Symposium
Academic article
Ekroll, Ingvild Kinn; Dahl, Torbjørn; Torp, Hans; Løvstakken, Lasse. (2012) In vivo Vector Flow Imaing With Retrospective Pulsed Wave Doppler. Proceedings - IEEE Ultrasonics Symposium
Academic article
Fadnes, Solveig; Nyrnes, Siri Ann; Swillens, Abigail; Torp, Hans; Løvstakken, Lasse. (2012) Shunt quantification in congenital heart disease based on two-dimensional speckle tracking. Proceedings - IEEE Ultrasonics Symposium
Academic article
Iversen, Daniel Høyer; Lindseth, Frank; Torp, Hans; Løvstakken, Lasse. (2012) Model-based correction of angle-dependencies in navigated 3-D flow imaging during neurosurgical interventions. IEEE International Ultrasonics Symposium Proceedings
Abstract
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
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
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
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
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
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
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2011) Change in left ventricular vortex flow before and after surgery for coarctation of the aorta in an infant shown with plane wave imaging and flow speckle tracking. Cardiology in the Young
Abstract
Alnes, Solveig Søvik; Swillens, Abigail; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2011) Clutter filtering issues in speckle tracking for two-dimensional blood velocity estimation - a potential solution based on compounded imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article
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
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
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
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
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
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
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
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
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
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
Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2010) Does a new ultrasound flow modality improve visualization of neonatal pulmonary veins?. Hjerteforum
Abstract
Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2010) Retrospective PW-Doppler based on spatiotemporal adaptive signal processing. IEEE International Ultrasonics Symposium Proceedings
Academic article
Løvstakken, Lasse; Torp, Hans. (2010) Extended Velocity Range in Color Flow Imaging using Parallel Receive Beamforming. IEEE International Ultrasonics Symposium Proceedings
Academic article
Hergum, Torbjørn; Bjåstad, Tore Grüner; Løvstakken, Lasse; Kristoffersen, Kjell; Torp, Hans. (2010) Reducing Color Flow Artifacts caused by Parallel Beamforming. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Swillens, Abigail Emily; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2010) Two-dimensional blood velocity estimation with ultrasound: speckle tracking versus crossed-beam vector Doppler based on flow simulations in a carotid bifurcation model. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
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
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
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
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
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
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
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
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
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
Kiss, Gabriel; Nielsen, Espen; Orderud, Fredrik; Torp, Hans. (2009) Performance optimization of block matching in 3D echocardiography. Proceedings - IEEE Ultrasonics Symposium
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
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
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
Bjåstad, Tore Grüner; Torp, Hans. (2009) Single-Pulse Tissue Doppler Using Synthetic Transmit Beams. 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
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
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
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
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
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
Swillens, A; Schryver, T De; Løvstakken, Lasse; Torp, Hans; Segers, P. (2009) Assessment of Numerical Simulation Strategies for Ultrasonic Color Blood Flow Imaging, Based on a Computer and Experimental Model of the Carotid Artery. Annals of Biomedical Engineering
Academic article
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; 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
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
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
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
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
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
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
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
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
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
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
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
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
Hergum, Torbjørn; Bjåstad, Tore; Torp, Hans. (2007) Parallel beamforming using synthetic transmit beams. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
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
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; 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
Oddershede, Niels; Løvstakken, Lasse; Torp, Hans; Jensen, Jørgen A.. (2007) Multi-dimensional spectrum analysis for 2-D vector velocity estimation. IEEE International Ultrasonics Symposium Proceedings
Academic article
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2007) A new ultrasound modality to visualise atrial septal defect flow in children. European Heart Journal-Cardiovascular Imaging
Abstract
Løvstakken, Lasse; Orderud, Fredrik; Torp, Hans. (2007) Real-time Indication of Acoustic Window for Phased-Array Transducers in Ultrasound Imaging. IEEE International Ultrasonics Symposium Proceedings
Academic article
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
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2007) Blood Flow Imaging - A New Angle-Independent Ultrasound Modality for the Visualization of Flow in Atrial Septal Defects in Children. Echocardiography
Academic article
Løvstakken, Lasse; Bjærum, Steinar; Torp, Hans. (2007) Optimal velocity estimation in ultrasound Color Flow Imaging in presence of clutter. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Khalid, Ibrahim; Løvstakken, Lasse; Kirkeby-Garstad, Idar; Torp, Hans; Vik-Mo, Harald; Haaverstad, Rune. (2007) Effect of the Cardiac Cycle on the Coronary Anastomosis Assessed by Ultrasound. Asian Cardiovascular and Thoracic Annals
Academic article
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
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
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
Løvstakken, Lasse; Bjærum, Steinar; Martens, Ditlef; Torp, Hans. (2006) Blood flow imaging - A new real-time, 2-D flow imaging technique. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Academic article
Løvstakken, Lasse; Tangen, Thor Andreas; Bjærum, Steinar; Torp, Hans. (2006) Optimal velocity estimation in ultrasound Color Flow Imaging in presence of clutter noise. IEEE International Ultrasonics Symposium Proceedings
Academic article
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Frinking, Peter J.A.; Céspedes, E. Ignacio; Kirkhorn, Johan; Torp, Hans; Jong, Nico de. (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
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
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
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
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
Bjærum, Steinar; Torp, Hans. (2000) Statistical Evaluation of Clutter Filters in Color Flow Imaging. Ultrasonics
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
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
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
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
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; Hagen, Carl Birger van der; 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
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
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
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
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
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
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
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
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
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
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
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
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

Books

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

Part of book/report

Ford, Steven Thomas; Viola, Ivan; Bruckner, Stefan; Torp, Hans; Kiss, Gabriel. (2012) HeartPad: real-time visual guidance for cardiac ultrasound.
Academic chapter/article/Conference paper
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

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
Leth-Olsen, Martin; Døhlen, Gaute; Torp, Hans; Nyrnes, Siri Ann. (2025) Continuous cerebral Doppler monitoring in infants with congenital heart disease. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
Grue, Jahn Frederik; Haugen, Bjørn Olav; Dalen, Håvard; Torp, Hans. (2020) Automatic measurements of mitral annular motion indices. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
Aakhus, Svend; Torp, Hans; Skjærpe, Terje. (2020) EFSUMB History of Ultrasound, Norway, Cardiology. EFSUMB EFSUMB
Report
Fiorentini, Stefano; Avdal, Jørgen; Torp, Hans; Wiseth, Rune; Hellevik, Leif Rune. (2020) 3-D Doppler imaging in cardiac applications using high frame-rate sequences. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
Torp, Hans. (2020) Introduction to shock-response spectra. Forsvarets forskningsinstitutt Forsvarets forskningsinstitutt
Report
Wigen, Morten Smedsrud; Løvstakken, Lasse; Fadnes, Solveig; Torp, Hans. (2019) 4D ultrasound vector flow imaging for intraventricular flow assessment. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
Karabiyik, Yucel; Løvstakken, Lasse; Ekroll, Ingvild Kinn; Torp, Hans; Eik-Nes, Sturla. (2017) Quantitative Doppler analysis using color flow imaging and adaptive signal processing. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Doctoral dissertation
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. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Masters thesis
Bech, Solveig; Torp, Hans; Salles, Sebastien. (2017) Motion Tracking by Transverse Oscillations in 3D Cardiac Ultrasound Imaging. Norges teknisk-naturvitenskapelige universitet Norges teknisk-naturvitenskapelige universitet
Masters thesis
Iversen, Daniel Høyer; Løvstakken, Lasse; Lindseth, Frank; Torp, Hans. (2014) Improved Methods for Navigated 3-D Vascular Ultrasound Imaging. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181 (2014:190)
Doctoral dissertation
Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2014) New ultrasound flow modalities for evaluation of congenital heart defects. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181 (2014:275)
Doctoral dissertation
Fredriksen, Tonje Dobrowen; Torp, Hans; Haugen, Bjørn Olav. (2014) Quantitative Doppler Methods in Cardiovascular Imaging. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181 (2014:312)
Doctoral dissertation
Crosby, Jonas; Torp, Hans; Remme, Espen W.; Skallerud, Bjørn Helge. (2009) Ultrasound-based quantification of myocardial deformation and rotation. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181; 2009:33 (Dissertations at the Faculty of Medicine, 0805-7680; 384)
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. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181 (2008:26)
Doctoral dissertation
Aase, Svein Arne; Torp, Hans. (2008) Methods for improving quality and efficiency in quantitative echocardiography: Aspects of using high frame rate. Norges teknisk-naturvitenskapelige universitet Doktoravhandlinger ved NTNU, 1503-8181 (2008:53)
Doctoral dissertation
Haaverstad, Rune; Samstad, Stein; Torp, Hans. (2002) "Blood motion imaging" - enforbedret ultralyd teknikk for hjerte-kar undersøkelser. Viteskapelige forhandlinger Viteskapelige forhandlinger
Report

Outreach

2025

Poster

Klcovansky, Jakob Josef Maria; Torp, Hans; Nyrnes, Siri Ann. (2025) NeoDoppler instantly displays cerebral blood flow velocities during cardiac surgery and intensive care. 9th World Congress of Pediatric Cardiology and Cardiac Surgery (WCPCCS) , Hong Kong 2025-12-06 - 2025-12-11

2024

Poster

Howell, Alison; Ytrehus, Lina Magret Eikebø; Mertens, Luc; Nyrnes, Siri Ann; Sun, Liqun; Amerom, Joshua van. (2024) Cardiac - Cerebrovascular Hemodynamics and Acquired Neonatal Brain Injury during Perinatal Transition in Transposition of the Great Arteries: The Feasibility of Multi-Modal Imaging. AEPC , Porto 2024-05-08 - 2024-05-11
Poster

Ustad, Astrid; Jarmund, Anders Hagen; Torp, Hans; Øyvind, Salvesen; Nyrnes, Siri Ann. (2024) Variations in cerebral hemodynamics in healthy infants measured continuously by trans-fontanel Doppler. Pediatric Academic Societies Meeting (PAS) , Toronto 2024-05-02 -
Academic lecture

Jarmund, Anders Hagen; Kristiansen, Steinar; Leth-Olsen, Martin; Vogt, Ella Christina Stray; Nervik, Ingunn; Torp, Hans. (2024) Perioperativ cerebral emboli-deteksjon med høy-frekvent Doppler-ultralyd. NFUDs symposium , Drammen 2024-04-24 -

2023

Poster

Leth-Olsen, Martin; Døhlen, Gaute; Torp, Hans; Nyrnes, Siri Ann. (2023) Dynamic Autoregulation in Infants Undergoing Cardiac Surgery. 8th World Congress of Pediatric Cardiology and Cardiac Surgery , Washington D.C. 2023-08-27 - 2023-09-01
Poster

Klcovansky, Jakob Josef Maria; Torp, Hans; Nyrnes, Siri Ann. (2023) Cerebral Blood Flow Monitoring for Instant Display of Circulatory Events During Cardiac Surgery. 8th World Congress of Pediatric Cardiology and Cardiac Surgery , Washington DC 2023-08-27 - 2023-09-01

2022

Interview

Nyrnes, Siri Ann; Torp, Hans; Okstad, Gunnar. (2022) Teknobedrift utnytter spedbarns myke skalle. Adresseavisen og MN24 Adresseavisen og MN24 [Journal] 2022-10-26
Lecture

Vik, Sigrid Dannheim; Støen, Ragnhild; Torp, Hans; Nyrnes, Siri Ann. (2022) Kontinuerlig overvåkning av hjernens blodstrøm hos spedbarn under generell anestesi. Ultralydsymposium , Oslo 2022-04-27 - 2022-04-29
Poster

Vik, Sigrid Dannheim; Støen, Ragnhild; Torp, Hans; Nyrnes, Siri Ann. (2022) NeoDoppler monitoring of cerebral blood flow during general anesthesia in infants. Pediatric Academic Societies , Denver 2022-04-21 - 2022-04-26
Academic lecture

Leth-Olsen, Martin; Torp, Hans; Døhlen, Gaute; Nyrnes, Siri Ann. (2022) NeoDoppler - Events and trends in cerebral blood flow during cardiac surgery measured by NeoDoppler. The 50th Nordic Paediatric Cardiology Meeting 2022 , Gothenburg 2022-09-28 - 2022-09-30

2021

Poster

Wifstad, Sigurd Vangen; Løvstakken, Lasse; Avdal, Jørgen; Torp, Hans; Fiorentini, Stefano. (2021) Automatic quantification of valvular insufficiency using 3D Doppler imaging and deep learning. Probabilistic AI summer school , Virituelt 2021-06-14 - 2021-06-18
Academic lecture

Wifstad, Sigurd Vangen; Løvstakken, Lasse; Avdal, Jørgen; Torp, Hans; Fiorentini, Stefano. (2021) Automatic quantification of valve insufficiency using 3D Doppler ultrasound and deep learning. CIUS conference , Virituelt 2021-04-28 -
Poster

Wifstad, Sigurd Vangen; Løvstakken, Lasse; Avdal, Jørgen; Torp, Hans; Fiorentini, Stefano. (2021) Automatic quantification of valvular insufficiency using 3D Doppler imaging and Deep Learning. International Ultrasonics Symposium 2021 , Virituelt 2021-09-11 - 2021-09-16
Poster

Ødegård, Siv Steinsmo; Torp, Hans; Follestad, Turid; Leth-Olsen, Martin; Støen, Ragnhild; Nyrnes, Siri Ann. (2021) Low frequency cerebral arterial and venous flow oscillations in healthy neonates measured by NeoDopper. Pediatric Academic Societies Meeting (PAS) 2021 2021-04-28 - 2021-06-04
Lecture

Indimath, Shivanandan; Fiorentini, Stefano; Avdal, Jørgen; Torp, Hans; Johansen, Tonni Franke; Bøklepp, Bjarne Rosvoll. (2021) Estimation of fluid velocity profile and crack geometry for influx/efflux while drilling oil and gas boreholes using Doppler ultrasound. ISNT NDE 2021 , Online 2021-12-09 - 2021-12-11
Poster

Leth-Olsen, Martin; Døhlen, Gaute; Grindheim, Guro; Torp, Hans; Nyrnes, Siri Ann. (2021) NeoDoppler - Continuous cerebral blood flow monitoring during cardiac surgery and interventions in children with congenital heart disease. AEPC 2021 - 54th annual meeting for european paediatric and congenital heart disease , Gøteborg - digitalt 2021-05-25 - 2021-05-27

2020

Academic lecture

Jarmund, Anders Hagen; Ødegård, Siv Steinsmo; Torp, Hans; Nyrnes, Siri Ann. (2020) Characterization of Instant Hemodynamic Responses to Tilt in Healthy Term Neonates using NeoDoppler. Euroson - Young Investigator Award , Online session 2020-06-12 - 2020-06-12
Poster

Faldaas, Bjørn Ove; Nielsen, Erik Waage; Storm, Benjamin Stage; Lappegård, Knut Tore; How, Ole-Jakob; Nilsen, Bent Aksel. (2020) Abstract 301: RescueDoppler: Non-invasive Handsfree Carotid Doppler Ultrasound For Continuous Hemodynamic-guided Resuscitation. Resuscitation Science Symposium , Chicago, Illinois 2020-11-05 -
Poster

Leth-Olsen, Martin; Døhlen, Gaute; Torp, Hans; Nyrnes, Siri Ann. (2020) Monitoring of cerebral high intensity transient signals during catheter interventions and surgery for congenital heart disease in infants using NeoDoppler. EACVI - Best of imaging 2020 2020-12-11 - 2020-12-12
Academic lecture

Espeland, Torvald; Salles, Sebastien; Støylen, Asbjørn; Berg, Erik Andreas Rye; Hammer, Tommy; Amundsen, Brage H.. (2020) Measuring myocardial mechanical wave velocities using 3D – initial clinical results. MEETING ON MYOCARDIAL FUNCTION IMAGING , Leuven 2020-02-06 - 2020-02-07

2019

Academic lecture

Torp, Hans; Løvstakken, Lasse. (2019) Super‐resolution power-Doppler imaging. IEEE International Ultrasonic Symposium , Glasgow 2019-10-07 - 2019-10-09
Poster

Fiorentini, Stefano; Ekroll, Ingvild Kinn; Torp, Hans; Avdal, Jørgen. (2019) Flowline tracking Doppler. 2019 IEEE International Ultrasonics Symposium (IUS) , Glasgow 2019-10-06 - 2019-10-09
Academic lecture

Leth-Olsen, Martin; Torp, Hans; Døhlen, Gaute; Nyrnes, Siri Ann. (2019) NeoDoppler - Hjernens sirkulasjon ved sykdom i barnehjertet. De 32. norske perinataldager , Kristiansand 2019-11-07 - 2019-11-08
Academic lecture

Magelssen, Malgorzata Isabela; Palmer, Cameron Lowell; Hjorth-Hansen, Anna; Nilsen, Hans Olav; Kiss, Gabriel; Torp, Hans. (2019) The feasibility and reliability of automatic quantitative analyses of mitral annular plane systolic excursion by hand-held ultrasound devices. Norsk Cardiologisk Selskaps Høstmøte 2019 , Oslo 2019-11-24 - 2019-11-26
Academic lecture

Ødegård, Siv Steinsmo; Torp, Hans; Leth-Olsen, Martin; Skånøy, Wenche; Ustad, Astrid; Nyrnes, Siri Ann. (2019) NeoDoppler - hjernens sirkulasjon hos friske nyfødte. Perinataldagene 2019 , Kristiansand 2019-11-07 - 2019-11-08
Poster

Berg, Erik Andreas Rye; Avdal, Jørgen; Espeland, Torvald; Torp, Hans; Aakhus, Svend. (2019) New 3D Doppler flow method for quantitation of aortic regurgitation. EuroEcho 2019 , Wien 2019-12-04 - 2019-12-07
Interview

Nyrnes, Siri Ann; Torp, Hans; Krüger, Frida Jørstad. (2019) Ny teknologi kan hindre hjerneskade hos for tidlig fødte barn. NRK NRK [Internet] 2019-03-14
Academic lecture

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 assessment of aortic stenosis severity. MEETING ON MYOCARDIAL FUNCTION IMAGING , Leuven 2019-02-07 - 2019-02-08
Academic lecture

Salles, Sebastien; Løvstakken, Lasse; Espeland, Torvald; Wigen, Morten Smedsrud; Fadnes, Solveig; Støylen, Asbjørn. (2019) 3D mechanical wave trajectory mapping in the left ventricle using Clutter Filter Wave Imaging. 2019 IEEE International Ultrasonics Symposium 2019-10-06 - 2019-10-09

2018

Poster

Golfetto, Cristiana; Ekroll, Ingvild Kinn; Torp, Hans; Avdal, Jørgen. (2018) 3D Coronary Blood Flow Imaging: A Comparison of Automatic Adaptive Clutter Filters. 2018 IEEE International Ultrasound Symposium 2018-10-22 - 2018-10-25
Academic lecture

Vik, Sigrid Dannheim; Torp, Hans; Støen, Ragnhild; Nyrnes, Siri Ann. (2018) NeoDoppler- Ny ultralydteknologi for kontinuerlig måling av cerebral blodstrøm hos nyfødte. Pediaterdagene 2018 , Trondheim 2018-01-17 - 2018-01-19
Lecture

Salles, Sebastien; Løvstakken, Lasse; Espeland, Torvald; Rodriguez-Molares, Alfonso; Aase, Svein Arne; Støylen, Asbjørn. (2018) 4D mechanical wave velocity mapping using clutter filter wave imaging. Healthy Subjects versus patients. IEEE IUS 2018 2018-10-22 - 2018-10-25
Academic lecture

Karabiyik, Yücel; Avdal, Jørgen; Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2018) Limiting spectral broadening in Pulsed Wave Doppler. Scandinavian Symposium on Physical Acoustics , Geilo, Norway 2018-01-27 - 2018-01-30
Interview

Torp, Hans; Nyrnes, Siri Ann; Stoltz, Kenneth. (2018) Liten, nett og lett. Midtpunkt Midtpunkt [Journal] 2018-12-12
Lecture

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. IEEE Ultrasonics Symposium 2018-10-22 - 2018-10-25
Lecture

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. International Ultrasonics Symposium 2018 , Kobe 2018-10-22 - 2018-10-25
Academic lecture

Avdal, Jørgen; Rodriguez-Molares, Alfonso; Berg, Erik Andreas Rye; Torp, Hans. (2018) Volume flow estimation in valvular jets using 3D high frame rate ultrasound. IEEE International Ultrasonics symposium 2018 2018-10-23 - 2018-10-25
Poster

Fatemi, Ali; Torp, Hans; Rodriguez-Molares, Alfonso. (2018) A dynamic Generalized Coherence Factor based on Van Cittert-Zernike theorem. International Ultrasonics Symposium 2018 , Kobe 2018-10-22 - 2018-10-25
Poster

Grue, Jahn Frederik; Storve, Sigurd; Torp, Hans; Mjølstad, Ole Christian; Støylen, Asbjørn; Haugen, Bjørn Olav. (2018) Reference values for automatic measurements of tissue Doppler indices. ESC Congress 2018 , Munich 2018-08-25 - 2018-08-29
Poster

Magelssen, Malgorzata Isabela; Palmer, Cameron Lowell; Hjorth-Hansen, Anna; Nilsen, Hans Olav; Kiss, Gabriel; Torp, Hans. (2018) The feasibility, accuracy and reliability of fully automatic analyses of left ventricular systolic longitudinal function by pocket-size imaging device. ESC Congress 2018 , Munich 2018-08-25 - 2018-08-29
Poster

Grue, Jahn Frederik; Storve, Sigurd; Torp, Hans; Mjølstad, Ole Christian; Støylen, Asbjørn; Haugen, Bjørn Olav. (2018) Reference values for automatic measurements of tissue Doppler indices. Kardiologisk høstmøte , Oslo 2018-10-25 - 2018-10-27

2017

Academic lecture

Grue, Jahn Frederik; Storve, Sigurd; Dalen, Håvard; Mjølstad, Ole Christian; Salvesen, Øyvind; Samstad, Stein. (2017) Automatic measurements of tissue doppler indices to detect left ventricular dysfunction. NCS Vårmøte 2017 , Trondheim 2017-06-08 - 2017-06-10
Academic lecture

Vik, Sigrid Dannheim; Torp, Hans; Støen, Ragnhild; Nyrnes, Siri Ann. (2017) NeoDoppler- Ny ultralydteknologi for kontinuerlig måling av cerebral blodstrøm hos nyfødte. Perinataldagene 2017 , Ålesund 2017-11-15 - 2017-11-17
Interview

Skjesol, Hilde; Vik, Sigrid Dannheim; Mauseth, Siri Ann; Torp, Hans; Nyrnes, Siri Ann. (2017) Tøff start på livet for Nina. Adresseavisen Adresseavisen [Journal] 2017-12-27
Poster

Hjorth-Hansen, Anna; Graven, Torbjørn; Gundersen, Guri Holmen; Skjetne, Kyrre; Stølen, Stian; Kleinau, Jens Olaf. (2017) Feasibility and reliability of echocardiographic recording by nurses supported by interpretation via telemedicine. ESC EuroEcho-Imaging 2017 , Barcelona 2017-09-06 - 2017-09-09
Academic lecture

Arneberg, Helene Caroline; Andersen, Thea Anette; Lorås, Liv; Torp, Hans; Scholbach, Thomas; Eggebø, Torbjørn Moe. (2017) Blood flow calculated in the uterine arteries based on the PixelFlux method. NFUD Symposium , Tønsberg 2017-05-03 - 2017-05-05
Poster

Golfetto, Cristiana; Torp, Hans; Ekroll, Ingvild Kinn. (2017) Adaptive Clutter Filtering in High Frame Rate 3D Coronary Imaging. 2017 IEEE International Ultrasonics Symposium 2017-09-06 -
Poster

Arneberg, Helene Caroline; Andersen, Thea Anette; Lorås, Liv; Torp, Hans; Scholbach, Thomas; Eggebø, Torbjørn Moe. (2017) Sammenheng mellom blodstrøm i uterinarteriene og fostervekst. Norsk Gynekologisk Forening Årsmøte , Stavanger 2017-10-25 - 2017-10-27
Poster

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. 27th World Congress on Ultrasound in Obstetrics and Gynecology , Wien 2017-09-16 - 2017-09-19
Poster

Grue, Jahn Frederik; Storve, Sigurd; Mjølstad, Ole Christian; Salvesen, Øyvind; Samstad, Stein; Torp, Hans. (2017) Automatic measurements of tissue doppler indices to detect left ventricular dysfunction. ESC Congress 2017 , Barcelona 2017-08-26 - 2017-08-30
Lecture

Giskeødegård, Guro F.; Bathen, Tone Frost; Sjøbakk, Torill Eidhammer; Grinde, Maria Tunset; Hill, Deborah Katherine; Madssen, Torfinn Støve. (2017) DE VERDIFULLE BILDENE. Forskningstorget 2017 , Trondheim 2017-09-22 - 2017-09-23
Poster

Grue, Jahn Frederik; Storve, Sigurd; Mjølstad, Ole Christian; Eriksen-Volnes, Torfinn; Samstad, Stein; Torp, Hans. (2017) Automatic measurements of left ventricular longitudinal function for inexperienced users. EuroEcho-Imaging , Lisboa 2017-12-06 - 2017-12-09
Academic lecture

Golfetto, Cristiana; Torp, Hans; Ekroll, Ingvild Kinn. (2017) Adaptive Clutter Filtering in Coronary Arteries. Artimino 2017 2017-06-11 - 2017-06-14
Poster

Salles, Sebastien; Løvstakken, Lasse; Torp, Hans. (2017) Clutter filter wave imaging (CFWI): a new way to visualize and detect mechanical waves propagation. IEEE Ultrasonics Symposium 2017 2017-09-06 -
Lecture

Salles, Sebastien; Torp, Hans. (2017) Motion Tracking by Transverse Oscillations in 3D Cardiac Ultrasound Imaging. IEEE Ultrasonics Symposium 2017 2017-09-06 - 2017-09-09

2016

Lecture

Torp, Hans. (2016) Diagnose av koronarsykdom uten bruk av kateter med 3D ultralyd, CT og matematiske strømningsmodeller. Teknologien endrer samfunnet , Trondheim 2016-04-19 - 2016-04-19
Lecture

Karabiyik, Yucel; Avdal, Jørgen; Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2016) Data Adaptive 2-D Tracking Doppler. IEEE International Ultrasonics symposium 2016-09-21 - 2016-09-21
Poster

Avdal, Jørgen; Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans Garman. (2016) Combined 2D Vector and Tracking Doppler for improved blood flow quantification. International ultrasonics symposium 2016-09-18 - 2016-09-21
Academic lecture

Karabiyik, Yücel; Avdal, Jørgen; Ekroll, Ingvild Kinn; Torp, Hans; Løvstakken, Lasse. (2016) Data Adaptive 2-D Tracking Doppler. IEEE International Ultrasonics Symposium , Tours, France 2016-09-18 - 2016-09-21
Interview

Aakervik, Anne-Lise; Vik, Sigrid Dannheim; Mauseth, Siri Ann; Støen, Ragnhild; Torp, Hans; Nyrnes, Siri Ann. (2016) Bedre vilkår for premature barn. NTNU Discovery NTNU Discovery [Internet] 2016-10-06
Poster

Salles, Sebastien; Torp, Hans. (2016) Smartphone-based portable ultrasound automatic segmentation of the left Ventricle. IEE IUS IEEE Ultrasonics Symposium 2016 2016-09-03 - 2016-09-07

2015

Poster

Palmer, Cameron Lowell; Kiss, Gabriel; Torp, Hans; Haugen, Bjørn Olav; Eik-Nes, Sturla; Tegnander, Eva. (2015) Mobile 3D augmented-reality system for ultrasound applications. IEEE IUS 2015 , Taipei 2015-10-21 - 2015-10-23
Poster

Ekroll, Ingvild Kinn; Avdal, Jørgen; Swillens, Abigail Emily; Torp, Hans; Løvstakken, Lasse. (2015) Multi-angle imaging for robust vector Doppler and coherent compounding. IEEE International Ultrasonics symposium 2015-10-21 - 2015-10-24
Academic lecture

Kiss, Gabriel; Khan, Naiad Hossain; Tegnander, Eva; Eik-Nes, Sturla; Torp, Hans. (2015) Fast ultrasound signal and image processing on a tablet device. IEEE IUS Ultrasonics Symposium , Taipei 2015-10-21 - 2015-10-24
Academic lecture

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. IEEE IUS Ultrasonics Symposium 2015-10-21 - 2015-10-24
Academic lecture

Palmer, Cameron Lowell; Haugen, Bjørn Olav; Tegnander, Eva; Eik-Nes, Sturla; Torp, Hans; Kiss, Gabriel. (2015) Mobile 3D augmented-reality system for ultrasound applications. IEEE IUS Ultrasonics Symposium , Taipei 2015-10-21 - 2015-10-24
Academic lecture

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. IEEE IUS Ultrasonics Symposium , Taipei 2015-10-21 - 2015-10-24
Poster

Grue, Jahn Frederik; Storve, Sigurd; Samstad, Stein; Mjølstad, Ole Christian; Dalen, Håvard; Torp, Hans. (2015) Automatic measurements of mitral annular excursion using color tissue Doppler to detect left ventricular dysfunction. EuroEcho-Imaging 2015 , Sevilla 2015-12-02 - 2015-12-05
Lecture

Rodriguez-Molares, Alfonso; Løvstakken, Lasse; Denarie, Bastien; Torp, Hans. (2015) Busting the ghost in coherent plane-wave imaging. IEEE International Ultrasonics Symposium 2015 , Taipei 2015-10-21 - 2015-10-24
Academic lecture

Kiss, Gabriel; Palmer, Cameron Lowell; Torp, Hans. (2015) Patient Adapted Augmented Reality System for Real-Time Echocardiographic Applications. MICCAI AR Workshop , Munchen 2015-10-05 - 2015-10-09
Academic lecture

Karabiyik, Yücel; Ekroll, Ingvild Kinn; Avdal, Jørgen; Torp, Hans; Løvstakken, Lasse. (2015) Adaptive Spectral Estimation Methods in Color Flow Imaging. The Artimino Conference on Medical Ultrasound Technology , Sweden 2015-07-06 - 2015-10-06
Academic lecture

Karabiyik, Yücel; Ekroll, Ingvild Kinn; Avdal, Jørgen; Torp, Hans; Løvstakken, Lasse. (2015) Adaptive Spectral Estimation Methods in Color Flow Imaging. IEEE International Ultrasonics Symposium , TAIPEI, TAIWAN 2015-10-21 - 2015-10-24
Academic lecture

Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2015) Improved quality of freehand 3-D ultrasound color flow imaging by multi-angle compounding. IEEE International Ultrasonics symposium 2015-10-21 - 2015-10-24

2014

Poster

Heger, Max; Stavdahl, Øyvind; Torp, Hans. (2014) Ultrasound Strain Rate Imaging of Individual Muscle Motor Units. 2014 IEEE International Ultrasonics Symposium , Chicago, Illinois 2014-09-03 - 2014-09-06
Academic lecture

Kiss, Gabriel; Storve, Sigurd; Haugen, Bjørn Olav; Torp, Hans. (2014) Augmented Reality Based Tools for Echocardiographic Acquisitions. IEEE Ultrasonics Symposium , Chicago 2014-09-03 - 2014-09-06
Interview

Hernes, Toril A. Nagelhus; Løvstakken, Lasse; Måsøy, Svein-Erik; Torp, Hans. (2014) Jubler over forskningsseier i Trondheim. Adresseavisen Adresseavisen [Journal] 2014-11-21
Poster

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 Ultrasonics Symposium , Chicago 2014-09-03 - 2014-09-06
Poster

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 Ultrasonics Symposium , Chicago 2014-09-03 -
Academic lecture

Kiss, Gabriel; Torp, Hans. (2014) Multi-modal visualization and augmentation for cardiac applications. Virtual physiological human conference , Trondheim 2014-09-09 - 2014-09-12
Poster

Storve, Sigurd; Grue, Jahn Frederik; Samstad, Stein; Dalen, Håvard; Haugen, Bjørn Olav; Torp, Hans. (2014) AUTOMATIC REAL-TIME MEASUREMENT OF ECHOCARDIOGRAPHIC INDICES OF LEFT VENTRICULAR SYSTOLIC AND DIASTOLIC FUNCTION. EuroEcho-Imaging 2014 2014-12-03 - 2014-12-06

2013

Poster

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. AEPC 2013 , London 2013-05-22 - 2013-05-25
Poster

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. 5th National PhD Conference in Medical Imaging , Trømsø 2013-10-03 - 2013-10-04
Academic lecture

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. IEEE International Ultrasonics Symposium , Prague 2013-07-21 - 2013-07-25

2012

Academic lecture

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. IEEE International Ultrasonics Symposium , Dresden 2012-10-07 - 2012-10-10
Poster

Brønstad, Espen Stene; Åsen, Jon Petter; Torp, Hans; Kiss, Gabriel. (2012) Visibility driven visualization of 3D cardiac ultrasound data on the GPU. IEEE International Ultrasonics Symposium , Dresden 2012-10-07 - 2012-10-10
Academic lecture

Ford, Steven Thomas; Viola, Ivan; Bruckner, Stefan; Torp, Hans; Kiss, Gabriel. (2012) HeartPad: Real-Time Visual Guidance for Cardiac Ultrasound. Workshop at SIGGRAPH ASIA (WASA) 2012 , Singapore 2012-11-26 - 2012-11-27
Academic lecture

Pettersen, Viggo; Bjørkøy, Kåre; Torp, Hans. (2012) Registration on dynamic movements in the diaphragm related to vertical larynx height in four professional classic singers. PAS 7 , Las Vegas 2012-10-17 - 2012-10-20
Academic lecture

Bjørkøy, Kåre; Torp, Hans. (2012) Ultrasound registration on Tongue Movements in speaking and singing tasks; a singlesubject study on a young lyrical soprano. Svenska Sång och Talförbundets årskonferanse , Jönköping 2012-08-08 - 2012-08-10
Academic lecture

Denarie, Bastien; Bjåstad, Tore; Torp, Hans. (2012) Real-time 3-D echocardiography: can we increase the framerate by a factor five?. 4th National PhD Conference in Medical Imaging , Trondheim 2012-11-28 - 2012-11-28
Poster

Dikici, Engin; orderud, fredrik; Torp, Hans. (2012) Best Linear Unbiased Estimator for Kalman Filter Based Left Ventricle Tracking in 3D+T Echocardiography. Mathematical Methods in Biomedical Image Analysis - IEEE , Breckenridge 2012-01-09 - 2012-01-10
Poster

Dikici, Engin; orderud, fredrik; Kiss, Gabriel; Thorstensen, Anders; Torp, Hans. (2012) Doo-Sabin Surface Models with Biomechanical Constraints for Kalman Filter Based Endocardial Wall Tracking in 3D+T Echocardiography. British Machine Vision Conference , Guildford 2012-09-03 - 2012-09-07
Poster

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 2012 , Dresden 2012-10-07 - 2012-10-10
Poster

Iversen, Daniel Høyer; Lindseth, Frank; Torp, Hans; Løvstakken, Lasse. (2012) Improved 3-D reconstruction of vascular flow based on plane wave imaging. IEEE ultrasonics conference 2012-10-07 - 2012-10-09
Poster

Fredriksen, Tonje Dobrowen; Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans. (2012) 2D Tracking Doppler: A New Method to Limit Spectral Broadening in Pulsed Wave Doppler. IEEE Ultrasonics Symposium 2012-10-07 - 2012-10-10
Academic lecture

Ekroll, Ingvild Kinn; Dahl, Torbjørn; Torp, Hans; Løvstakken, Lasse. (2012) In vivo Vector Flow Imaging With Retrospective Pulsed Wave Doppler. IEEE, International ultrasonics symposium 2012 2012-10-07 - 2012-10-10
Academic lecture

Fadnes, Solveig; Nyrnes, Siri Ann; Swillens, Abigail; Torp, Hans; Løvstakken, Lasse. (2012) Shunt quantification in congenital heart disease based on two-dimensional speckle tracking. 4th PhD Conference in Medical Imaging , Trondheim 2012-11-28 - 2012-11-29
Academic lecture

Fadnes, Solveig; Nyrnes, Siri Ann; Swillens, Abigail; Torp, Hans; Løvstakken, Lasse. (2012) Shunt quantification in congenital heart disease based on two-dimensional speckle tracking. 2012 IEEE International Ultrasonics Symposium , Dresden 2012-10-07 - 2012-10-10
Poster

Fadnes, Solveig; Nyrnes, Siri Ann; Swillens, Abigail; Torp, Hans; Løvstakken, Lasse. (2012) Shunt quantification in congenital heart disease based on two-dimensional speckle tracking. 2012 IEEE International Ultrasonics Symposium , Dresden 2012-10-07 - 2012-10-10
Academic lecture

Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2012) Model-based correction of angle-dependencies in navigated 3-D flow imaging during neurosurgical interventions. Nansen Neuroscience Network meeting 2012-05-29 - 2012-05-29

2011

Interview

Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2011) Kan redde nyfødte med hjertefeil. Forskning.no Forskning.no [Internet] 2011-01-05
Interview

Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2011) Kan redde flere nyfødte med hjertefeil. NRK NRK [Internet] 2011-01-05
Interview

Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2011) Lettere å finne hjertefeil. Barnehage.no - Nyheter Barnehage.no - Nyheter [Internet] 2011-01-05
Academic lecture

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. IEEE International Ultrasonics Symposium , Orlando, Florida 2011-10-18 - 2011-10-21
Poster

Prieur, Fabrice Jean Gabriel; Johansen, Tonni Franke; Torp, Hans. (2011) Fast 3D simulation of second harmonic ultrasound field. 3rd National PhD Conference in Medical Imaging , Oslo 2011-11-21 - 2011-11-22
Academic lecture

Denarie, Bastien; Torp, Hans; Haugen, Geir Ultveit; Sørnes, Anders Rasmus; Bjåstad, Tore. (2011) Motion Compensated Synthetic Transmit Beam Technique for Real-time Echocardiography. IEEE International Ultrasonics Symposium 2011 (IUS 2011) , Orlando, Florida 2011-10-18 - 2011-10-21
Poster

Brekke, Birger; Aase, Svein Arne; Torp, Hans; Bjåstad, Tore; Støylen, Asbjørn. (2011) 3D Tissue Doppler imaging with ultra high frame rate. EEE International Ultrasonics Symposium 2011 , Orlando 2011-10-18 - 2011-10-21
Poster

Brekke, Birger; Aase, Svein Arne; Torp, Hans; Støylen, Asbjørn; Bjåstad, Tore. (2011) Mechanical waves in the heart. The 2nd National PhD conference in Medical Imaging and the Annual MedViz conference 2011-01-17 - 2011-01-18
Poster

Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2011) Change in left ventricular vortex flow before and after surgery for coarctation of the aorta in an infant shown with plane wave imaging and flow speckle tracking. 45th Annual Meeting Association for European Paediatric Cardiology , Granada 2011-05-18 - 2011-05-21
Poster

Alnes, Solveig Søvik; Swillens, Abigail; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2011) Clutter filtering issues in speckle tracking for two-dimensional blood velocity estimation. IEEE International Ultrasonics Symposium 2011 , Orlando 2011-10-18 - 2011-10-21
Academic lecture

Løvstakken, Lasse; Nyrnes, Siri Ann; Haugen, Bjørn Olav; Torp, Hans. (2011) Latest technology for 2D blood flow analysis. Euroecho & other Imaging Modalities , Budapest 2011-12-07 - 2011-12-10
Academic lecture

Løvstakken, Lasse; Nyrnes, Siri Ann; Haugen, Bjørn Olav; Torp, Hans. (2011) Angle-independent quantification of complex flow patterns in congenital heart disease. IEEE International Ultrasonics Symposium , Orlando 2011-10-18 - 2011-10-21
Academic lecture

Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2011) 3-D flow imaging in neurosurgery -Improved flow detection and quantification of neurovascular flow. Medical Imaging Medical Imaging , Oslo 2011-11-21 - 2011-11-22
Poster

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. Euroecho 2011 , Budapest 2011-12-07 - 2011-12-10
Poster

Denarie, Bastien; Bakstad, Ole Jørgen; Løvstakken, Lasse; Bjåstad, Tore; Torp, Hans. (2011) FieldSim3: a unified ultrasound simulation platform. 3rd National PhD Conference in Medical Imaging 2011-11-21 - 2011-11-22
Poster

Denarie, Bastien; Bjåstad, Tore; Sørnes, Anders Rasmus; Haugen, Geir U.; Kristoffersen, Kjell; Torp, Hans. (2011) Real-time motion compensation for efficient 3D echocardiography. MedViz and National PhD Conference in Medical Imaging 2011 2011-01-17 - 2011-01-18
Academic lecture

Ekroll, Ingvild Kinn; Løvstakken, Lasse; Torp, Hans. (2011) Improved spectral Doppler in medical ultrasound based on spatiotemporal adaptive signal processing. 2011 Joint National Ph.D. Conference in Medical Imaging and MedViz Conference 2011-01-17 - 2011-01-18
Poster

Ekroll, Ingvild Kinn; Swillens, Abigail; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2011) Simultanous quantification of flow and tissue velocities based on multi-angle plane wave imaging with extended velocity range. IEEE International Ultrasonics Symposium 2011 (IUS 2011) 2011-10-17 - 2011-10-21
Poster

Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2011) Flow speckle tracking for detailed visualization of flow patterns in neonates with congenital heart defects. Euroecho & other Imaging Modalities 2011 , Budapest 2011-12-07 -
Poster

Hansen, Harald Edvard Mølmen; Støylen, Asbjørn; Thorstensen, Anders; Torp, Hans; Dalen, Håvard. (2011) Left ventricular strain by indexed motion mode - normal values according to age and sex. EuroEcho 2011 , Budapest 2011-12-07 - 2011-12-10
Poster

Dalen, Håvard; Thorstensen, Anders; Hansen, Harald Edvard Mølmen; Torp, Hans; Støylen, Asbjørn. (2011) Comparison of longitudinal strain by m-mode and a combination of tissue Doppler and speckle tracking. EuroEcho 2011 , Budapest 2011-12-07 - 2011-12-10
Poster

Iversen, Daniel Høyer; Lindseth, Frank; Unsgård, Geirmund; Torp, Hans; Løvstakken, Lasse. (2011) Model-based correction of angle-dependencies in navigated3-D flow imaging during neurosurgical interventions. IEEE ultrasonics conference 2011 , Orlando 2011-10-18 - 2011-10-21

2010

Academic lecture

Mjølstad, Ole Christian; Haraldseth, Olav; Torp, Hans; Haugen, Bjørn Olav. (2010) Opplæring, bruk og nytte av den nye håndholdte ultralydmaskinen. Midt-Norsk Kardiologisk Forum 2010 , Trondheim 2010-11-18 - 2010-11-19
Lecture

Mjølstad, Ole Christian; Haraldseth, Olav; Torp, Hans; Haugen, Bjørn Olav. (2010) The Vscan, an ultrasound innovation. Norwegian Healthcare and Life Science Innovation Expo - Shanghai 2010 , Shanghai 2010-09-08 - 2010-09-25
Poster

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. EUROECHO 2010 , København 2010-12-11 - 2010-12-11
Academic lecture

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. 22nd International Conference of the Society for Medical Innovation and Technology , Trondheim 2010-09-02 - 2010-09-04
Academic lecture

Løvstakken, Lasse; Torp, Hans. (2010) Extended Velocity Range in Color Flow Imaging using Parallel Receive Beamforming. IEEE International Ultrasonics Symposium , San Diego 2010-10-11 - 2010-10-14
Academic lecture

Skaug, Thomas Renhult; Hergum, Torbjørn; Amundsen, Brage H.; Skjærpe, Terje; Torp, Hans; Haugen, Bjørn Olav. (2010) Tredimensjonal kvantitering av klaffelekkasjer. Høstmøte i Ekkokardiografi , Tønsberg 2010-10-15 - 2010-10-16
Poster

Jasaityte, Ruta; Amundsen, Brage H.; Barbosa, Daniel; Loeckx, Dirk; Kiss, Gabriel; Orderud, Fredrik. (2010) Comparison of 3D strain estimation by splineMIRIT with standard 2D speckle tracking. EuroEcho , Copenhagen 2010-12-08 - 2010-12-11
Poster

Aase, Svein Arne; Snare, Sten Roar; Dalen, Håvard; Støylen, Asbjørn; Torp, Hans. (2010) Echocardiography without ECG. EuroEcho 2010 , København 2010-12-08 -
Poster

Amundsen, Brage H.; Jasaityte, Ruta; Kiss, Gabriel; Barbosa, Daniel; D'hooge, Jan R M; Torp, Hans. (2010) Regional three-dimensional strain measurements in the left ventricle: a comparison with wall motion score. EuroEcho , Copenhagen 2010-12-08 - 2010-12-11
Poster

Barbosa, Daniel; Kiss, Gabriel; Orderud, Fredrik; Amundsen, Brage H.; Jasaityte, Ruta; Loeckx, Dirk. (2010) Fully automatic estimation of ejection fraction in 3D cardiac ultrasound: validation in a clinical setting. EuroEcho , Copenhagen 2010-12-08 - 2010-12-11
Academic lecture

Kiss, Gabriel; Steen, Erik; Åsen, Jon Petter; Torp, Hans. (2010) GPU volume rendering in 3D echocardiography: real-time preprocessing and ray-casting. IEEE international ultrasonics symposium , San Diego 2010-10-11 - 2010-10-14

2009

Poster

Aase, Svein Arne; Snare, Sten Roar; Mjølstad, Ole Christian; Dalen, Håvard; Orderud, Fredrik; Torp, Hans. (2009) QRS detection and cardiac cycle separation without ECG. IEEE International Ultrasonics Symposium 2009-09-20 - 2009-09-23
Academic lecture

Skaug, Thomas Renhult; Hergum, Torbjørn; Amundsen, Brage H.; Torp, Hans; Haugen, Bjørn Olav. (2009) Mitral regurgitation quantified by three-dimensional (3D) echocardiography- a comparison with Magnetic Resonance Imaging (MR). NCS Vintermøte , Lillehammer 2009-01-30 - 2009-01-30
Poster

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 2009-09-20 - 2009-09-23
Poster

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. EuroEcho , Madrid 2009-12-11 - 2009-12-11
Interview

Mjølstad, Ole Christian; Haugen, Bjørn Olav; Snare, Sten Roar; Torp, Hans. (2009) Bærbar ultralyd, utprøvning i allmennpraksis. NRK, Lørdagsrevyen NRK, Lørdagsrevyen [TV] 2009-10-31
Academic lecture

Løvstakken, Lasse; Bjåstad, Tore Grüner; Hergum, Torbjørn; Kirkhorn, Johan; Nyrnes, Siri Ann; Torp, Hans. (2009) Real-time high frame rate flow imaging using plane-waves and parallel receive beamforming – an in vivo investigation. IEEE International Ultrasonics Symposium , Roma 2009-09-20 - 2009-09-23
Academic lecture

Swillens, Abigail; Segers, Patrick; Torp, Hans; Løvstakken, Lasse. (2009) Two-dimensional flow velocity estimation in the carotid bifurcation: a study of crossed-beam vector Doppler and speckle tracking using computational fluid dynamics. IEEE International Ultrasonics Symposium , Roma 2009-09-20 - 2009-09-23
Academic lecture

Torp, Hans; Løvstakken, Lasse. (2009) Estimation and Imaging of Blood Flow Velocity. IEEE International Ultrasonics Symposium , Roma 2009-09-20 - 2009-09-23
Poster

Snare, Sten Roar; Torp, Hans. (2009) Estimating Frequency Dependent Attenuation to Improve Automatic Time Gain Compensation in B-mode Imaging. IEEE International Ultrasonics Symposium 2009-11-02 - 2009-11-05
Academic lecture

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. IEEE international ultrasonics symposium , Rome 2009-09-20 - 2009-09-23
Academic lecture

Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2009) Gir ny ultralydmetode bedre avbilding av lungeveneblodstrøm hos nyfødte?. Høstmøte i ekkokardiografi 2009 , Tønsberg 2009-10-16 - 2009-10-17
Academic lecture

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. IEEE international ultrasonics symposium , Rome 2009-09-20 - 2009-09-23
Poster

Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans. (2009) Plane wave imaging for high frame rate flow visualisation in neonates with congenital heart disease. Euroecho 2009 , Madrid 2009-12-09 - 2009-12-12
Poster

Kiss, Gabriel; Amundsen, Brage H.; Thorstensen, Anders; Torp, Hans. (2009) Quantitative comparison of LV volumes in 3D echocardiography and cardiac magnetic resonance imaging. EUROECHO , Madrid 2009-12-09 - 2009-12-12
Academic lecture

Nyrnes, Siri Ann; Løvstakken, Lasse; Skogvoll, Eirik; Torp, Hans; Haugen, Bjørn Olav. (2009) Does a new ultrasound flow modality improve visualisation of neonatal pulmonary veins?. 5th World Congress of Paediatric Cardiology and Cardiac Surgery , Cairns 2009-06-21 - 2009-06-26
Poster

Kiss, Gabriel; Nielsen, Espen; Orderud, Fredrik; Torp, Hans. (2009) Performance optimization of block matching in 3D echocardiography. IEEE international ultrasonics symposium , Rome 2009-09-20 - 2009-09-23

2008

Poster

Frijlink, Martijn Egbert; Løvstakken, Lasse; Torp, Hans. (2008) Fundamental and Third Harmonic Operation of a Medical Phased Array Transducer. Ultrasonics Symposium , Beijing 2008-11-02 - 2008-11-05
Poster

Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2008) The coronary arteries visualised by a new ultrasound flow modality. EuroEcho 2008 , Lyon 2008-12-13 - 2008-12-13
Poster

Aase, Svein Arne; Torp, Hans; Amundsen, Brage H.; Bjåstad, Tore; Støylen, Asbjørn. (2008) Peak systolic velocity by upper edge of pulsed wave tissue Doppler spectrums cause overestimation compared to M-mode in normal subjects. Euroecho 2008 , Lyon 2008-12-10 - 2008-12-13
Poster

Løvstakken, Lasse; Ibrahim, Khalid Shaker Oklah; Vitale, Nicola; Henriksen, Siri; Kirkeby-Garstad, Idar; Torp, Hans. (2008) Blood Flow Imaging - A new 2-D ultrasound modality for enhanced intraoperative visualization of blood flow patterns in coronary anastomoses. Medical Imaging Laboratory Day , Trondheim 2008-11-20 -
Poster

Swillens, Abigail; Løvstakken, Lasse; Torp, Hans; Segers, Patrick. (2008) A comparison of multidimensional flow estimation techniques using computational fluid dynamics: speckle tracking versus vector Doppler. IEEE International Ultrasonics Symposium , Beijing 2008-11-02 - 2008-11-05
Poster

Frijlink, Martijn Egbert; Løvstakken, Lasse; Torp, Hans. (2008) Fundamental and Third Harmonic Operation of a Medical Phased Array Transducer. Medical Imaging Laboratory Day , Trondheim 2008-11-20 -
Lecture

Torp, Hans; Krokstad, Steinar; Svebak, Sven; valen, snorre; Aase, Andreas; Åse, Tone. (2008) Se musikken i kroppen. Researchers Night , Blæst 2008-09-26 - 2008-09-26
Interview

Pettersen, Viggo; Bjørkøy, Kåre; Torp, Hans. (2008) Les ultrasons au secours du chant. [Journal] 2008-01-04
Academic lecture

Skaug, Thomas Renhult; Hergum, Torbjørn; Amundsen, Brage H.; Torp, Hans; Haugen, Bjørn Olav. (2008) Quantification of mitral regurgitation- a new three-dimensional (3D) Doppler method. EuroEcho 2008 , Lyon 2008-12-11 - 2008-12-11
Academic lecture

Torp, Hans; Løvstakken, Lasse. (2008) Estimation and Imaging of Tissue Motion and Blood Velocity. 2008 IEEE International Ultrasonics Symposium - Short course , Beijing 2008-11-02 - 2008-11-05
Academic lecture

Hergum, Torbjørn; Skaug, Thomas Renhult; Matre, Knut; Torp, Hans. (2008) Quantification of Valvular Regurgitation Area and Geometry using HPRF 3D Doppler. 2008 IEEE International Ultrasonics Symposium , Beijing 2008-11-02 - 2008-11-05

2007

Poster

Amundsen, Brage H.; Crosby, Jonas; Steen, Per Arvid; Torp, Hans; Støylen, Asbjørn; Slørdahl, Stig Arild. (2007) Regional myocardial strain measured by four different automated echocardiographic methods - a comparison with MRI tagging. ESC 2007 , Wien 2007-08-30 - 2007-09-03
Poster

Orderud, Fredrik; Hansegård, Jøger; Amundsen, Brage H.; Torp, Hans; Rabben, Stein Inge. (2007) Real-time Left Ventricular Volume Measurements in 3D Echocardiograms. EuroEcho 2007 , Lisboa 2007-12-05 - 2007-12-08
Poster

Løvstakken, Lasse; Yu, Alfred C. H.; Torp, Hans. (2007) In Vivo Investigation of Filter order Influence in Eigen-based Clutter Filtering for Color Flow Imaging. IEEE International Ultrasonics Symposium , New York 2007-10-28 - 2007-10-31
Poster

Oddershede, Niels; Løvstakken, Lasse; Torp, Hans. (2007) Multi-dimensional spectrum analysis for 2-D vector velocity estimation. IEEE International Ultrasonics Symposium , New York 2007-10-28 - 2007-10-31
Poster

Løvstakken, Lasse; Orderud, Fredrik; Torp, Hans. (2007) Real-time Indication of Acoustic Window for Phased-Array Transducers in Ultrasound Imaging. IEEE International Ultrasonics Symposium , New York 2007-10-28 - 2007-10-31
Academic lecture

Amundsen, Brage H.; Crosby, Jonas; Steen, Per Arvid; Torp, Hans; Støylen, Asbjørn; Slørdahl, Stig Arild. (2007) Comparison of different methods for non-invasive evaluation of regional deformation. Myocardial Velocity and Deformation Imaging , Leuven 2007-02-09 - 2007-02-10
Interview

Pettersen, Viggo; Bjørkøy, Kåre; Torp, Hans. (2007) Der klangene dannes. [Journal] 2007-10-05
Academic lecture

Pettersen, Viggo; Bjørkøy, Kåre; Torp, Hans. (2007) Observations on Vertical Laryngeal Positions in Classical Singing. PEVOC 7 (Pan European Voice Conference) , Groningen, Nederland,http://www.pevoc7.nl/ 2007-08-29 - 2007-09-01
Poster

Nyrnes, Siri Ann; Løvstakken, Lasse; Torp, Hans; Haugen, Bjørn Olav. (2007) A new ultrasound modality to visualise atrial septal defect flow in children. EuroEcho 2007 , Lisboa 2007-12-08 - 2007-12-08
Academic lecture

Vasseljen, Ottar; Fladmark, Anne Margrethe; Westad, Christian; Nygaard, Øystein P; Torp, Hans. (2007) Muscle activity onset in abdominal muscles recorded simultaneously by intramuscular electromyography and high-frame rate ultrasound imaging. 15th International Congress of the World Confederation for Physical Therapy , Vancouver 2007-06-02 - 2007-06-06

2006

Poster

Hernes, Toril A. Nagelhus; Myhre, Hans Olav; Mårvik, Ronald; Unsgård, Geirmund; Langø, Thomas; Kaspersen, John Harald. (2006) Ultrasound and MR for improved diagnostics therapy, monitoring, activation and guidance. EU konferanse , Barcelona 2006-09-15 - 2006-09-20
Poster

Løvstakken, Lasse; Tangen, Thor Andreas; Bjærum, Steinar; Torp, Hans. (2006) Optimum velocity estimation in ultrasound color flow imaging in presence of clutter noise. IEEE International ultrasonics symposium , Vancouver 2006-10-03 - 2006-10-06
Poster

Hergum, Torbjørn; Crosby, Jonas; Langhammer, Marit Jordet; Torp, Hans. (2006) The Effect of Including Fiber Orientation in Simulated 3D Ultrasound Images of the Heart. IEEE International Ultrasonics Symposium , Vancouver 2006-10-03 - 2006-10-06
Poster

Hergum, Torbjørn; Horne, Øyvind; Haugen, Bjørn Olav; Samstad, Stein; Soma, Johannes; Torp, Hans. (2006) Determining mitral regurgitant jet area using three dimensional color-flow. Euroecho 10 2006-12-05 - 2006-12-09
Poster

Hergum, Torbjørn; Crosby, Jonas; Langhammer, Marit Jordet; Torp, Hans. (2006) The Effect of Including Fibre Orientation in Simulated 3D Ultrasound Images of the Heart. 2006 IEEE International Ultrasonics Symposium , Vancouver 2006-10-03 - 2006-10-06
Poster

Aase, Svein Arne; Torp, Hans; Støylen, Asbjørn. (2006) Relation between Aortic Valve Closure by high frame rate B-mode and end systolic events in Tissue Doppler velocity/time curves. Euroecho 10 , Praha 2006-12-06 - 2006-12-09
Poster

Aase, Svein Arne; Torp, Hans; Støylen, Asbjørn. (2006) The duration of aortic valve closure. Euroecho 10 , Praha 2006-12-06 - 2006-12-09
Academic lecture

Blaas, Harm-Gerd; Taipale, Pekka; Torp, Hans; Eik-Nes, Sturla. (2006) Volumberegninger av humane embryos og tidlige foster med tredimensjonal ultralys: En studie om volummålinger og dens reproduserbarhet. Norsk gynekologisk forenings årsmøte , Oslo 2006-08-31 - 2006-09-02
Academic lecture

Løvstakken, Lasse; Torp, Hans. (2006) Blood Flow Imaging (BFI) – En ny metode for visualisering av 2D blodstrømsforhold med ultralyd. Årsmøte for Norsk Forening for Ultralyddiagnostikk (NFUD) , Trondheim 2006-04-27 - 2006-04-29

2005

Academic lecture

Ingul, Charlotte Bjørk; Slørdahl, Stig Arild; Torp, Hans; Marwick, Thomas H.. (2005) Impact of Age and Hemodynamics on Strain Rate During Dobutamine Stress Echocardiography: Is Designation of a Normal Range Feasible?. ESC Congress 2005 , Stockholm 2005-09-03 -
Poster

Crosby, Jonas; Helle-valle, Thomas; Amundsen, Brage H.; Torp, Hans. (2005) Tracking of Regional Left Ventricular Rotation by Tissue Doppler Imaging. 2005 IEEE International Ultrasonics Symposium , Rotterdam 2005-09-18 - 2005-09-21
Poster

Malm, S; Amundsen, B; Torp, Hans; Støylen, Asbjørn; Sagberg, E; Skjærpe, Terje. (2005) Fractional myocardial infarct area size estimated by recontructed 3-dimensional parametric strain rate imaging. EuroEcho , Firenze 2005-12-07 - 2005-12-10
Poster

Brekke, Svein; Rabben, Stein Inge; Støylen, Asbjørn; Steen, Erik; Haugen, Asbjørn; Haugen, Geir U.. (2005) Real-time volume stitching in 4D echocardiography. IEEE UFFC Ultrasonic Symposium , Rotterdam 2005-09-18 - 2005-09-21
Poster

Bjåstad, Tore; Aase, Svein Arne; Torp, Hans. (2005) Velocity Sensitivity Mapping in Tissue Doppler Imaging. Ultrasonics Symposium 2005 , Rotterdam 2005-09-18 - 2005-09-21
Poster

Bjåstad, Tore; Aase, Svein Arne; Torp, Hans. (2005) Velocity Sensitivity Mapping in Tissue Doppler Imaging. IEEE Ultrasonics Symposium , Rotterdam 2005-09-18 - 2005-09-21
Poster

Dursun, Safiye Emilie Slettvold; Varslot, Trond; Johansen, Tonni Franke; Angelsen, Bjørn Atle J.; Torp, Hans. (2005) Fast 3D simulation of 2nd harmonic ultrasound field from arbitrary transducer geometries. 2005 IEEE-UFFC Ultrasonics Symposium , Rotterdam 2005-09-18 - 2005-09-21
Poster

Amundsen, Brage H.; Løvstakken, Lasse; Samstad, Stein; Torp, Hans; Slørdahl, Stig Arild. (2005) Blood Flow Imaging by ultrasound– improved visualisation of flow direction in carotid stenoses using speckle tracking. Annual Congress of European Society of Cardiology 2005 , Stockholm 2005-09-03 - 2005-09-07
Poster

Crosby, Jonas; Helle-valle, Thomas; Amundsen, Brage H.; Torp, Hans. (2005) Tracking of Regional Left Ventricular Rotation by Tissue Doppler Imaging. 2005 IEEE International Ultrasonics Symposium , Rotterdam 2005-09-18 - 2005-09-21
Academic lecture

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. 2005 IEEE International Ultrasonics Symposium , Rotterdam 2005-09-18 - 2005-09-21
Academic lecture

Ingul, Charlotte Bjørk; Slørdahl, Stig Arild; Torp, Hans; Marwick, Thomas H.. (2005) Impact of Age and Hemodynamics on Strain Rate During Dobutamine Stress Echocardiography: Is Designation of a Normal Range Feasible?. 16th Annual Scientific Sessions of the American Society of Echocardiography , BOSTON 2005-05-15 - 2005-05-18
Poster

Amundsen, Brage H.; Malm, Siri; Rustad, Lene Anette; Crosby, Jonas; Støylen, Asbjørn; Torp, Hans. (2005) Måling av strain i myokard med speckle tracking – sammenligning av to ulike metoder. Norsk Cardiologisk Selskaps Vårmøte 2005 , Bergen 2005-05-26 - 2005-05-28
Poster

Amundsen, Brage H.; Malm, Siri; Rustad, Lene Anette; Crosby, Jonas; Støylen, Asbjørn; Torp, Hans. (2005) Speckle tracking echocardiography: angle-independent strain measurements with better repeatability than strain from tissue Doppler imaging. EuroEcho 9 , Firenze 2005-12-07 - 2005-12-10
Poster

Amundsen, Brage H.; Malm, Siri; Rustad, Lene Anette; Støylen, Asbjørn; Torp, Hans; Slørdahl, Stig Arild. (2005) Improved feasibility and reduced variability of echocardiography myocardial strain measurements with 2D strain compared to strain by tissue Doppler imaging. Annual Congress of the European Society of Cardiology 2005 , Stockholm 2005-09-03 - 2005-09-07
Poster

Hergum, Torbjørn; Rabben, Stein Inge; Torp, Hans. (2005) Ultra-Fast Ultrasound 3D Imaging Simulator. 2005 IEEE Ultrasonics Symposium , Rotterdam 2005-09-18 - 2005-09-21
Poster

Amundsen, Brage H.; Løvstakken, Lasse; Samstad, Stein; Torp, Hans; Slørdahl, Stig Arild. (2005) Ny ultralydmetode for bedre framstilling av flowretning i carotis-stenoser: Blood Flow Imaging (BFI). Norsk Cardiologisk Selskaps Vårmøte 2005 , Bergen 2005-05-26 - 2005-05-28
Poster

Løvstakken, Lasse; Bjærum, Steinar; Kristoffersen, Kjell; Haaverstad, Rune; Torp, Hans. (2005) Real-time Adaptive Clutter Rejection Filtering in Color Flow Imaging Using Power Method Iterations. IEEE International Ultrasonics Symposium , Rotterdam 2005-09-18 - 2005-09-21
Poster

Amundsen, Brage H.; Malm, Siri; Rustad, Lene Anette; Støylen, Asbjørn; Torp, Hans; Slørdahl, Stig Arild. (2005) Two different speckle tracking echocardiography methods for measuring strain in the left ventricle. Annual Congress of the European Society of Cardiology 2005 , Stockholm 2005-09-03 - 2005-09-07
Poster

Crosby, Jonas; Helle-valle, Thomas; Amundsen, Brage H.; Torp, Hans. (2005) Measurement of Regional Left Ventricular Rotation by Tissue Doppler Imaging. Eureecho 9 , Firenze 2005-12-07 - 2005-12-10
Academic lecture

Brekke, Svein; Rabben, Stein Inge; Støylen, Asbjørn; Steen, Erik; Torp, Hans. (2005) Real-time volume stitching in 4D echocardiography. IEEE UFFC Ultrasonic Symposium , Rotterdam 2005-09-18 - 2005-09-21
Academic lecture

Amundsen, Brage H.; Rognmo, Ø; Hatlen, Gudrun; Støylen, Asbjørn; Torp, Hans; Slørdahl, Stig Arild. (2005) Improved diastolic function after endurance exercise training in patients with stable coronary artery disease. 6. Nordiske kongress i preventiv kardiologi og hjertrehabilitering , Tønsberg 2005-06-16 - 2005-06-18
Academic lecture

Amundsen, Brage H.; Malm, Siri; Rustad, Lene Anette; Crosby, Jonas; Støylen, Asbjørn; Torp, Hans. (2005) Speckle tracking ekkokardiografi for måling av lang-akse strain i venstre ventrikkel-sammenligning med strain fra vevs-Doppler. Norsk Cardiologisk Selskaps Vårmøte 2005 , Bergen 2005-05-26 - 2005-05-28
Academic lecture

Amundsen, Brage H.; Malm, Siri; Rustad, Lene Anette; Crosby, Jonas; Støylen, Asbjørn; Torp, Hans. (2005) Clinical feasibility of speckle tracking echocardiography. Norsk Cardiologisk Selskaps Vintermøte 2005 , Lillehammer 2005-01-28 - 2005-01-30
Academic lecture

Amundsen, Brage H.; Crosby, Jonas; Malm, Siri; Rustad, Lene Anette; Helle-Valle, T; Støylen, Asbjørn. (2005) Non-invasive myocardial strain measured by speckle tracking echocardiography. Medical Technology Seminar , Trondheim 2005-06-09 - 2005-06-09

2004

Academic lecture

Ibrahim, Khalid Shaker Oklah; Løvstakken, Lasse; Kirkeby-Gaarstad, I.; Torp, Hans; Mårvik, Ronald; Haaverstad, Rune. (2004) Effect of the cardiac cycle and ultrasonic mode on the LIMA-LAD anastomosis in epicardial imaging. Abstract-book: Scandinavian Society for Research in Cardiothoracic Surgery meeting, Geilo, Norway 2004-03-14 -
Academic lecture

Ibrahim, Khalid Shaker Oklah; Løvstakken, Lasse; Kirkeby-Gaarstad, I.; Torp, Hans; Vik-Mo, Harald; Haaverstad, Rune. (2004) Cardiac cycle and ultrasound mode does not influence the intraperative epicardial assessment of the LIMA-LAD anastomosis. First Conference of Arab Faculties of Medicine Society and first Conference of Jordanian Faculties of Medicine 2004-04-19 - 2004-04-22
Academic lecture

Amundsen, Brage; Helle-Valle, T; Torp, Hans; Lyseggen, E; Vartdal, T; Støylen, Asbjørn. (2004) Validation of a new ultrasound method for measuring myocardial strain combining speckle tracking and tissue Doppler imaging. ESC Annual Congress , München 2004-08-29 - 2004-09-01
Academic lecture

Amundsen, Brage H.; Helle-Valle, T; Crosby, Jonas; Torp, Hans; Støylen, Asbjørn; Ihlen, H. (2004) Måling av myocardial strain med ultralyd speckle tracking. Havna-møtet, Norsk Cardiologisk Selskap , Tønsberg 2004-10-15 - 2004-10-16
Academic lecture

Brekke, Svein; Ingul, Charlotte Bjørk; Aase, Svein Arne; Torp, Hans. (2004) Increasing frame rate in ultrasound imaging by temporal morphing using tissue Doppler. 2004 IEEE International Ultrasonics, Ferroelectrics, and Frequency Control 50th Anniversary Joint Conference , Montreal 2004-08-24 - 2004-08-27
Poster

Aase, Svein Arne; Støylen, Asbjørn; Ingul, Charlotte Bjørk; Frigstad, Sigmund; Torp, Hans. (2004) Automated Detection of Aortic Valve Closure in Apical Tissue Doppler Images. IEEE UFFC symposium , Montreal 2004-08-23 - 2004-08-27
Poster

Ingul, Charlotte Bjørk; Støylen, Asbjørn; Torp, Hans; Slørdahl, Stig Arild. (2004) Automated quatification of dobutamine stress echocardiography by strain rate and strain is feasible. Euroecho 8 , Athen 2004-12-01 - 2004-12-04
Poster

Ingul, Charlotte Bjørk; Torp, Hans; Berg, Sigrid; Aase, Svein Arne; Støylen, Asbjørn; Slørdahl, Stig Arild. (2004) Automatic measurement of strain rate is timesaving and has comparable accuracy to manual measurement. Vårmøte 2004 , Trondheim 2004-05-27 - 2004-05-29
Poster

Amundsen, Brage; Helle-Valle, T; Torp, Hans; Crosby, Jonas; Støylen, Asbjørn; Ihlen, H. (2004) Ultrasound speckle tracking reduces angle dependency of myocardial strain estimates- Validation by sonomicrometry. Euroecho 8 , Athen 2004-12-01 - 2004-12-04
Poster

Ingul, Charlotte Bjørk; Torp, Hans; Støylen, Asbjørn; Slørdahl, Stig Arild. (2004) Strain rate values based on tissue Doppler velocity or speckle tracking are different. Euroecho 8 , Athen 2004-12-01 - 2004-12-04
Poster

Aase, Svein Arne; Støylen, Asbjørn; Ingul, Charlotte Bjørk; Frigstad, Sigmund; Torp, Hans. (2004) Automated Detection of Aortic Valve Closure in Apical Tissue Doppler Images. IEEE UFFC symposium , Montreal 2004-08-23 - 2004-08-27
Poster

Hergum, Torbjørn; Bjåstad, Tore; Torp, Hans. (2004) Parallel beamforming using synthetic transmit beams. IEEE UFFC symposium 2004-08-23 - 2004-08-27
Poster

Brekke, Svein; Ingul, Charlotte Bjørk; Aase, Svein Arne; Torp, Hans. (2004) Increasing frame rate in ultrasound imaging by temporal morphing using tissue Doppler. 2004 IEEE International Ultrasonics, Ferroelectrics, and Frequency Control 50th Anniversary Joint Conference , Montreal 2004-08-24 - 2004-08-27
Poster

Ingul, Charlotte Bjørk; Torp, Hans; Berg, Sigrid; Aase, Svein Arne; Støylen, Asbjørn; Slørdahl, Stig Arild. (2004) Automatic strain rate measurement from tissue Doppler combined with speckle tracking reduces measurement variability. Kardiologisk vårmøte 2004 , Trondheim 2004-05-27 - 2004-05-29
Poster

Ingul, Charlotte Bjørk; Torp, Hans; Berg, Sigrid; Aase, Svein Arne; Støylen, Asbjørn; Slørdahl, Stig Arild. (2004) Automatic measurement of strain rate is timesaving and has comparable accuracy to manual measurement. ESC Annual Congress , München 2004-08-28 - 2004-09-01
Poster

Hergum, Torbjørn; Bjåstad, Tore; Torp, Hans. (2004) Parallel beamforming using synthetic transmit beams. IEEE UFFC symposium , Montreal 2004-08-23 - 2004-08-27
Poster

Sagberg, Einar; Malm, Siri; Ingul, Charlotte Bjørk; Torp, Hans; Støylen, Asbjørn. (2004) Spatial velocity distribution for visualising velocity gradients. Feasibility and preliminary experience. Euroecho 8 , Athen 2004-12-01 - 2004-12-05
Academic lecture

Helle-Valle, T; Edvardsen, Thor; Crosby, Jonas; Amundsen, Brage H.; Smith, Hans Jørgen; Rosen, BD. (2004) New Non-Invasive Method for Assessment of LV Rotation - Speckle Tracking Echocardiography. EuroEcho 2004 , Athen 2004-12-01 - 2004-12-04
Academic lecture

Helle-Valle, T; Edvardsen, Thor; Crosby, Jonas; Amundsen, Brage H.; Smith, Hans Jørgen; Rosen, BD. (2004) New Non-Invasive Method for Assessment of LV Rotation - Speckle Tracking Echocardiography. AHA Scientific Sessions 2004 , New Orleans 2004-11-07 - 2004-11-10
Academic lecture

Sagberg, Einar; Malm, Siri; Ingul, Charlotte Bjørk; Torp, Hans; Støylen, Asbjørn. (2004) Feasibility of 3D reconstructed parametric strain rate data in recognition og myocardial infarction. Euroecho 8 , Athen 2004-12-01 - 2004-12-05
Academic lecture

Torp, Hans; Løvstakken, Lasse. (2004) Decomposition of flow signals into basis functions: Performance advantages, disadvantages, and computational complexity. IEEE International Ultrasonics Symposium , Montreal 2004-08-24 - 2004-08-27
Academic lecture

Løvstakken, Lasse; Bjærum, Steinar; Martens, Ditlef; Torp, Hans. (2004) Real-time Blood Motion Imaging - A 2D Blood Flow Visualization Technique. IEEE International Ultrasonics Symposium , Montreal 2004-08-24 - 2004-08-27
Academic lecture

Vasseljen, Ottar; Dahl, Haldis Haug; Mork, Paul Jarle; Torp, Hans. (2004) Muscle activity timing in Multifidus measured by high frame-rate ultrasound imaging. Fifth interdisciplinary Worldcongress on low back and pelvic pain , Melbourne 2004-11-13 - 2004-11-16

2003

Poster

Støylen, Asbjørn; Ingul, Charlotte Bjørk; Torp, Hans. (2003) 3-/4-dimensional parametric imaging allows quick visualisation of regional dysfunction and reverberation artefacts. ESC congress , Wien 2003-09-03 -
Poster

Ingul, Charlotte Bjørk; Støylen, Asbjørn; Torp, Hans; Skjærpe, Terje; Slørdahl, Stig Arild. (2003) Stunning recovery in acute myocardial infarction quantified by strain rate imaging. A clinical study. . Norsk Cardiologisk Selskaps Vintermøte , Lillehammer 2003-02-02 -
Academic lecture

Varslot, Trond; Dursun, Safiye; Johansen, Tonni Franke; Hansen, Rune; Angelsen, Bjørn Atle J.; Torp, Hans. (2003) Influence of Acoustic Intensity on the Second-harmonic Beam-profile. IEEE Ultrasonics Symposium , Honolulu, Hawaii 2003-10-08 -
Academic lecture

Ingul, Charlotte Bjørk; Støylen, Asbjørn; Torp, Hans; Skjærpe, Terje; Slørdahl, Stig Arild. (2003) Stunning recovery in acute myocardial infarction quantified by strain rate imaging. A clinical study. ESC congress , Wien 2003-09-03 -
Academic lecture

Ingul, Charlotte Bjørk; Støylen, Asbjørn; Torp, Hans; Skjærpe, Terje; Slørdahl, Stig Arild. (2003) Border zone in Acute Myocardial Infarction: Natural history and assessment by Ultrasound Strain Rate Imaging. ESC congress 2003 , Wien 2003-09-03 -
Academic lecture

Ingul, Charlotte Bjørk; Støylen, Asbjørn; Torp, Hans; Skjærpe, Terje; Slørdahl, Stig Arild. (2003) Border zone in Acute Myocardial Infarction: Natural history and assessment by Ultrasound Strain Rate Imaging. Norsk kardiologisk selskaps vårmøte , Bergen 2003-05-24 -
Academic lecture

Pettersen, Viggo; Bjørkøy, Kåre; Torp, Hans. (2003) Activity of the Neck and Shoulder Muscles and its Relation to VLP and Thorax Movement. PEVOC 2003 , GRAZ 2003-08-31 -
Academic lecture

Pettersen, Viggo; Bjørkøy, Kåre; Torp, Hans. (2003) Activity of the Neck and Shoulder Muscles and its Relation to VLP and Thorax Movement. PEVOC 2003 , GRAZ 2003-08-27 - 2003-08-31
Poster

Løvstakken, Lasse; Haaverstad, Rune; Aadahl, Petter; Bjærum, Steinar; Samstad, Stein; Torp, Hans. (2003) Quality Control of Off-Pump Coronary Heart Surgery using Ultrasound Color Flow Imaging with Adaptive Clutter Rejection Filters. 2003 IEEE International Ultrasonics Symposium , Honolulu, Hawaii, USA 2003-10-08 -

2002

Academic lecture

Torp, Hans. (2002) Quantifying myocardial deformation by strain (-rate) imaging. EuroEcho 6 , Munich, Germany 2002-12-07 -
Academic lecture

Bjærum, Steinar; Martens, Ditlef; Kristoffersen, Kjell; Torp, Hans. (2002) Blood Motion Imaging - A New Technique to Visualize 2D Blood Flow Patterns. IEEE Ultrasonic symposium , Munich, Germany 2002-10-11 -
Academic lecture

Langeland, Stian; Dhooge, Jan; Bijnens, Bart; Torp, Hans; Suetens, P.. (2002) A Simulation Study on the Performance of Different Estimators for Two-Dimensional Velocity Estimation. IEEE Ultrasonic Symposium , Munich, Germany 2002-10-11 -
Academic lecture

Torp, Hans. (2002) Signal processing in tissue Doppler and strain imaging. Workshop on Cardiac Deformation Imaging by Ultrasound , Leuven, Belgium 2002-10-12 -
Academic lecture

Torp, Hans. (2002) Flow measurements. IEEE International Ultrasonic symposium , Munich, Germany 2002-10-11 -
Academic lecture

Haaverstad, Rune; Samstad, Stein; Torp, Hans. (2002) "Blood Motion Imaging" -En forbedret ultralyd teknikk for hjerte-kar undersøkelser. Norsk Kirurgisk Forening, Årsmøte , Oslo 2002-10-25 -
Poster

Torp, Hans; Johansen, Tonni Franke. (2002) NONLINEAR WAVEPROPAGATION � A FAST 3D SIMULATION METHOD BASED ON QUASI-LINEAR APPROXIMATION OF THE SECOND HARMONIC FIELD. 2002 IEEE Ultrasonics Symposium , Munchen 2002-10-11 -
Academic lecture

Brekke, Svein; Tegnander, Eva; Torp, Hans; Eik-Nes, Sturla. (2002) Dynamic 3D Ultrasound Imaging of the Fetal Heart. 2002 IEEE International Ultrasonics Symposium , München 2002-10-11 -
Academic lecture

Brekke, Svein; Tegnander, Eva; Torp, Hans; Eik-Nes, Sturla. (2002) Dynamic 3D ultrasound imaging of the fetal heart. IEEE UFFC Ultrasonic Symposium 2002 , München 2002-10-08 - 2002-10-11
Academic lecture

Rabben, Stein Inge; Bjaerum, S.; Sorhus, V.; Torp, Hans. (2002) Ultrasound-based vessel wall tracking: an autocorrelation technique with RF center frequency estimation. EuroSon 2002, 14th Conference of the European Federation of Societies for Ultrasound in Medicine and Biology , Warsaw, Poland 2002-07-04 -

2001

Academic lecture

Bjærum, Steinar; Torp, Hans; Kristoffersen, Kjell. (2001) High frame rate tissue Doppler imaging. IEEE International Ultrasonics Symposium, Atlanta , Atlanta, USA 2001-10-10 -
Academic lecture

Haugen, Bjørn Olav; Berg, Sevald; Brecke, Kjell Morten; Samstad, Stein; Slørdahl, Stig Arild; Skjærpe, Terje. (2001) Measurement of volumetric blood flow and studies of velocity profiles based on a new dynamic three-dimensional freehand colour flow imaging method. Norsk Cardiologisk Selskaps Vintermøte , Lillehammer, Norge 2001-02-02 -
Lecture

Haugen, Bjørn Olav; Berg, Sevald; Brecke, Kjell Morten; Samstad, Stein; Torp, Hans; Slørdahl, Stig Arild. (2001) Three-dimensional ultrasound: Velocity profiles and Cardiac Output in Mitral and Aortic flow. Fagmøte i forbindelse med Bijoy Khandheiras (Mayo Clinic) besøk på IFBT , Trondheim 220201
Poster

Shai, Sonu; Kirkhorn, Johan; Frigstad, Sigmund; Torp, Hans. (2001) In vitro comparison of second harmonic, pulse inversion and power Doppler for ultrasound contrast agent detection. The Sixth European Symposium on Ultrasound Contrast Imaging , Rotterdam, Nederland, 25.-26. januar 2001

2000

Academic lecture

Kirkhorn, Johan; Frigstad, Sigmund; Torp, Hans. (2000) Comparison of Pulse Inversion and Second Harmonic for Ultrasound Contrast Detection. 2000 IEEE Ultrasonics Symposium , San Juan, Puerto Rico. 22-25 oktober 2000
Academic lecture

Kirkhorn, Johan; Frinking, Peter J.A.; Jong, Nico de; Torp, Hans; Frigstad, Sigmund. (2000) Initial experience with multi-pulse release imaging. The Fifth Heart Centre Symposium on Ultrasound Contrast Imaging , Rotterdam, Nederland. 20-21 januar, 2000
Academic lecture

Haugen, Bjørn Olav; Berg, Sevald; Brecke, Kjell Morten; Samstad, Stein; Torp, Hans; Slørdahl, Stig Arild. (2000) Velocity profiles in the aortic annulus based on three-dimensional (3D)freehand color flow imaging acquired at high frame rate. The 9`th Congress of World Federation for Ultrasound in Medicine and Biology. , Florenze, Italy. May 6-10, 2000.
Lecture

Haugen, Bjørn Olav; Berg, Sevald; Brecke, Kjell Morten; Samstad, Stein; Skjærpe, Terje; Slørdahl, Stig Arild. (2000) Tredimensjonal ultralyd: Hastighetsprofiler i mitralflow. Midtnorsk Cardiologisk Forum , Trondheim 1 Desember 2000
Poster

Slordahl, S; Bjaerum, S; Amundsen, Brage; Stoylen, A; Heimdal, Andreas; Rabben, S. (2000) High frame rate strain rate imaging of the ventricular septum in Healthy Subjects. 9th Congress of the World Federation for Ultrasound in Medicine and Biology , Florence, Italy
Poster

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. The Fourth Annual and Plenary Meeting of the Working Group on Echocardiography of the ESC. , Lisbon, Portugal, 6-9 December 2000.

1999

Academic lecture

Kirkhorn, Johan; Frinking, Peter J.A.; Jong, Nico de; Torp, Hans. (1999) Improved ultrasound contrast detection combining harmonic power Doppler with a release-burst. 1999 IEEE Ultrasonics Symposium , Lake Tahoe, Nevada, USA. 17-20 oktober 1999
Academic lecture

Kirkhorn, Johan; Frinking, Peter J.A.; Jong, Nico de; Torp, Hans. (1999) Improving the sensitivity of power-Doppler for ultrasound contrast imaging by using a high power release-burst. The Fourth Heart Centre Symposium on Ultrasound Contrast Imaging , Rotterdam, Nederland
Lecture

Haugen, Bjørn Olav; Berg, Sevald; Samstad, Stein; Torp, Hans; Skjærpe, Terje. (1999) Ny metode for måling av volumetrisk flow i aorta ved hjelp av dynamisk, tredimensjonal (3D) ekkokardiografi. Midtnorsk Cardiologisk Forum , Trondheim Desember 1999
Academic lecture

Bjærum, Steinar; Torp, Hans. (1999) The effect of accelerated tissue motion on clutter rejection in color flow imaging. 1999 IEEE Ultrasonics Symposium , Lake Tahoe, Oct. 1999

1998

Academic lecture

Holm, Henrik; Torp, Hans. (1998) Signal Models of Nonlinear Acoustics in Ultrasound Imaging. NORSIG'98 -- IEEE Nordic Signal Processing Symposium , Vigsø, Danmark
Academic lecture

Bjærum, Steinar; Torp, Hans. (1998) Blood Detection Performance in Moving Tissue. IEEE Ultrasonics Symposium , Sendai, Japan
Academic lecture

Kirkhorn, Johan; Fehske, Wolfgang; Torp, Hans. (1998) Densitometry on digital ultrasound data for quantitative evaluation of myocardial perfusion. Euroecho 2 , Trieste, Italia
Lecture

Heimdal, Andreas; Gilja, Odd Helge; Torp, Hans. (1998) Strain rate imaging of the stomach. Kultur og gastro , Nordheimsund
Academic lecture

Berg, Sevald; Samstad, Stein; Torp, Hans. (1998) Volumetric blood flow estimation using dynamic three-dimensional ultrasound color flow imaging. IEEE International Ultrasonics Symposium , [Mangler data]
Academic lecture

Slørdahl, Stig Arild; Berg, Sevald; Støylen, Asbjørn; Samstad, Stein; Torp, Hans. (1998) Left ventricular volumes from three-dimensional echocardiography by rapid freehand scanning using digital scan line data. XXth Congress of The European Society of Cardiology , [Mangler data]
Academic lecture

Heimdal, Andreas; Dhooge, Jan; Bijnens, Bart; Sutherland, George; Torp, Hans. (1998) In vitro validation of in-plane strain rate imaging. A new ultrasound technique for evaluating regional myocardial deformation based on tissue Dopp imaging. Euroecho 2 , Trieste, Italia
Academic lecture

Heimdal, Andreas; Dhooge, Jan; Bijnens, Bart; Sutherland, George; Torp, Hans. (1998) Effect of stationary reverberations and clutter filtering in Strain Rate Imaging. IEEE Ultrasonics Symposium , Sendai, Japan
Academic lecture

Berg, Sevald; Samstad, Stein; Torp, Hans. (1998) Dynamic three-dimensional freehand echocardiography: high framerate transthoracic valve reconstruction. American Heart Association 71st Scientific Sessions , [Mangler data]
Academic lecture

Blaas, Harm-Gerd; Eik-Nes, Sturla; Berg, Sevald; Torp, Hans. (1998) Sonoembryology using 3d ultrasonography. Euroson , Tours, Frankrike

1997

Academic lecture

Berg, Sevald; Samstad, Stein; Bjærum, Steinar; Torp, Hans. (1997) Quantitative transthoracic three-dimensional (3D) color flow imaging : a new method applied to mitral blood flow. The 12th Symposium on Echocardiology and 9th Meeting of the Int ernational Cardiac Doppler Society , Rotterdam
Academic lecture

Samstad, Stein; Bjærum, Steinar; Torp, Hans. (1997) Cross sectional flow velocity profiles from two-dimensional colour Doppler (2DCD) recorded with high framerate : a new method applied to mitral blood flow. 9th Meeting of the Internal Cardiac Doppler Society , Rotterdam
Academic lecture

Samstad, Stein; Bjærum, Steinar; Torp, Hans. (1997) Variability of E/A ratio of the mitral blood flow velocity pattern with the intraventricular site of velocity sampling. 9th Meeting of the Internal Cardiac Doppler Society , Rotterdam
Academic lecture

Heimdal, Andreas; Torp, Hans. (1997) Detecting small blood vessels in color flow imaging : a statistical approach. IEEE International Ultrasonics Symposium , Toronto
Academic lecture

Heimdal, Andreas; Torp, Hans; Støylen, Asbjørn; Urdalen, T.; Lund, A.V.. (1997) Real-time strain velocity imaging (SVI). IEEE International Ultrasonics Symposium , Toronto
Academic lecture

Bjærum, Steinar; Torp, Hans. (1997) Optimal adaptive clutter filtering in color flow imaging. IEEE Ultrasonics Symposium , Toronto

1996

Academic lecture

Mele, D.; Schwammenthal, E.; Fratola, C.; Pedini, I.; Torp, Hans; Alboni, F.. (1996) An objective technique for applying the PISA method to quantitate mitral regurgitation : initial clinical studies using the digital flow map. European Society of Cardiology , Birmingham
Academic lecture

Mæhle, Jørgen; Aakhus, S.; Bjørnstad, K.; Torp, Hans. (1996) How many echocardiographic views should be used to determine left ventricular dimensions and shape from three-dimensional reconstruction of endocardial surface?. European Society of Cardiology , Birmingham
Academic lecture

Bjørnstad, K.; Mæhle, Jørgen; Aakhus, S.; Torp, Hans. (1996) Quantitative indices of global left ventricular shape and function derived from three-dimensional echocardiographic reconstruction of endocardial surface in patients with and without myocardial infarction. European Society of Cardiology , Birmingham
Academic lecture

Torp, Hans. (1996) Future directions and possible solutions to current color Doppler limitations. Cardiac flow dynamics , Aspen, Colo.
Academic lecture

Heimdal, Andreas; Torp, Hans. (1996) Ultrasound clutter signal from vibrating muscles limits low velocity blood flow measurements. IEEE Ultrasonics Symposium , San Antonio, Tex.
Academic lecture

Ødegaard, Lars; Halvorsen, Emil; Ystad, Bjørnar; Torp, Hans; Angelsen, Bjørn Atle J.. (1996) Delay and amplitude focusing through the body wall : a simulation study. IEEE Ultrasonics Symposium , San Antonio, Tex.
Academic lecture

Torp, Hans; Bjærum, Steinar. (1996) Quality versus framerate in color flow imaging : an experimental study based on offline processing of RF-signals recorded from patients. IEEE Ultrasonics Symposium , San Antonio, Tex.

1989

Academic lecture

Berg, Sevald; Samstad, Stein; Torp, Hans. (1989) Dynamic three-dimensional freehand echocardiography: high framerate transthoracic valve reconstruction. American Heart Association 71st Scientific Sessions , [Mangler data]

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Hans Garman Torp

Hans Garman Torp

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