Vitenskapelig artikkel

• Prot, Victorien Emile; Aguilera, Hans Martin Dahl; Skallerud, Bjørn Helge et al. (2025). A method for non-invasive estimation of mitral valve annular regional strains. (ekstern lenke)
• Sadeghinia, Mohammad Javad; Persson, Robert; Ellensen, Vegard Skalstad et al. (2024). Quantified planar collagen distribution in healthy and degenerative mitral valve: biomechanical and clinical implications. (ekstern lenke)
• Erevik, Christine Bjørkvik; Kleiven, Øyunn; Frøysa, Vidar et al. (2024). Echocardiographic assessment of myocardial efficiency predicts exercise performance. (ekstern lenke)
• Erevik, Christine Bjørkvik; Kleiven, Øyunn; Frøysa, Vidar et al. (2024). Exercise-Induced Cardiac Troponin I Elevation Is Associated With Regional Alterations in Left Ventricular Strain in High-Troponin Responders. (ekstern lenke)
• Persson, Robert Matongo; Aguilera, Hans Martin Dahl; Grong, Ketil et al. (2024). Characterisation of global and regional mitral annular strains in an acute porcine model. (ekstern lenke)
• Berg-Hansen, Christian Engelsen; Sindre, Rasmus Bach; Grymyr, Lisa Marie Dale et al. (2024). Sex differences in left atrial volumes, mechanics, and stiffness in primary mitral regurgitation - a combined 2D and 3D echocardiographic study. (ekstern lenke)
• Khan, Umael; Urheim, Stig; Saeed, Sahrai (2023). Post-systolic shortening in the context of peri-myocarditis: two clinical imaging vignettes. (ekstern lenke)
• Hjertaas, Johannes Just; Einarsen, Eigir; Gerdts, Eva et al. (2023). Impact of aortic valve stenosis on myocardial deformation in different left ventricular levels: A three-dimensional speckle tracking echocardiography study. (ekstern lenke)
• Aguilera, Hans Martin Dahl; Persson, Robert; Haaverstad, Rune et al. (2023). In silico analysis provides insights for patient-specific annuloplasty in Barlow's disease. (ekstern lenke)
• Erevik, Christine Bjørkvik; Kleiven, Øyunn; Frøysa, Vidar et al. (2023). Myocardial inefficiency is an early indicator of exercise-induced myocardial fatigue. (ekstern lenke)
• Sadeghinia, Mohammadjavad; Aguilera, Hans Martin Dahl; Urheim, Stig et al. (2023). Mechanical behavior and collagen structure of degenerative mitral valve leaflets and a finite element model of primary mitral regurgitation. (ekstern lenke)
• Persson, Robert; Aguilera, Hans Martin Dahl; Kvitting, John-Peder et al. (2023). Mitral annular dynamics are influenced by left ventricular load and contractility in an acute animal model. (ekstern lenke)
• Aguilera, Hans Martin; Urheim, Stig; Persson, Robert et al. (2022). Finite element analysis of mitral valve annuloplasty in Barlow's disease. (ekstern lenke)
• Dumont, Karl-Andreas; Aguilera, Hans Martin; Persson, Robert et al. (2022). Mitral Annular Elasticity Determines Severity of Regurgitation in Barlow's Mitral Valve Disease. (ekstern lenke)
• Leinan, Paul Roger; Grønli, Thomas; Skjetne, Paal et al. (2022). Comparison of ultrasound vector flow imaging and CFD simulations with PIV measurements of flow in a left ventricular outflow trackt phantom - Implications for clinical use and in silico studies. (ekstern lenke)
• Cramariuc, Dana; Johnsen, Boel; Johannessen, Nicolai Maroni et al. (2021). An unusual cause of prosthetic aortic valve thrombosis detected by multimodality imaging. (ekstern lenke)
• Aguilera, Hans Martin; Urheim, Stig; Skallerud, Bjørn Helge et al. (2021). Influence of Annular Dynamics and Material Behavior in Finite Element Analysis of Barlow’s Mitral Valve Disease. (ekstern lenke)
• Kellermair, Joerg; Saeed, Sahrai; Ott, Helmut W. et al. (2020). High-molecular-weight von Willebrand Factor multimer ratio differentiates true-severe from pseudo-severe classical low-flow, low-gradient aortic stenosis. (ekstern lenke)
• Morud, John; Skjetne, Paal; Urheim, Stig et al. (2019). The effect of chordae tendineae on systolic flow. (ekstern lenke)
• Saeed, Sahrai; Smith, Jenna; Grigoryan, Karine et al. (2019). Impact of pulmonary hypertension on outcome in patients with moderate or severe tricuspid regurgitation. (ekstern lenke)
• Dumont, Karl-Andreas; Kvitting, John Peder Escobar; Karlsen, Jørn S. et al. (2018). Validation of a holographic display for quantification of mitral annular dynamics by three-dimensional echocardiography. (ekstern lenke)
• Kozlowski, Pawel; Urheim, Stig; Samset, Eigil (2017). Evaluation of a multi-view autostereoscopic real-time 3D ultrasound system for minimally invasive cardiac surgery guidance. (ekstern lenke)
• Broch, Kaspar; Marchi, Stefano De; Massey, Richard J et al. (2017). Left Ventricular Contraction Pattern in Chronic Aortic Regurgitation and Preserved Ejection Fraction: Simultaneous Stress-Strain Analysis by Three-Dimensional Echocardiography. (ekstern lenke)
• Bersvendsen, Jørn; Orderud, Fredrik; Lie, Øyvind Haugen et al. (2017). Semiautomated biventricular segmentation in three-dimensional echocardiography by coupled deformable surfaces. (ekstern lenke)
• Bersvendsen, Jørn; Toews, Matthew; Danudibroto, Adriyana et al. (2016). Robust spatio-Temporal registration of 4D cardiac ultrasound sequences. (ekstern lenke)
• Broch, Kaspar; Urheim, Stig; Lønnebakken, Mai Tone et al. (2016). Controlled release metoprolol for aortic regurgitation: a randomised clinical trial. (ekstern lenke)
• Broch, Kaspar; Urheim, Stig; Massey, Richard et al. (2016). Exercise capacity and peak oxygen consumption in asymptomatic patients with chronic aortic regurgitation. (ekstern lenke)
• Bersvendsen, Jørn; Orderud, Fredrik; Massey, Richard et al. (2016). Automated Segmentation of the Right Ventricle in 3D Echocardiography: A Kalman Filter State Estimation Approach. (ekstern lenke)
• Dumont, Karl-Andreas; Karlsen, Jørn Skaarud; Helle-Valle, Thomas Michael et al. (2015). Mitral valve analysis adding a virtual semi-transparent annulus plane for detection of prolapsing segments. (ekstern lenke)
• Ofstad, Anne Pernille; Urheim, Stig; Dalen, Håvard et al. (2015). Identification of a definite diabetic cardiomyopathy in type 2 diabetes by comprehensive echocardiographic evaluation: A cross-sectional comparison with non-diabetic weight-matched controls. (ekstern lenke)
• Beitnes, Jan Otto; Klæboe, Lars Gunnar; Karlsen, Jørn Skaarud et al. (2015). Mitral valve analysis using a novel 3D holographic display: a feasibility study of 3D ultrasound data converted to a holographic screen. (ekstern lenke)
• Skaug, Thomas; Amundsen, Brage H.; Hergum, Torbjørn et al. (2014). Quantification of aortic regurgitation using high-pulse repetition frequency three-dimensional colour Doppler. (ekstern lenke)
• Ofstad, Anne Pernille; Johansen, Odd Erik; Gullestad, Lars et al. (2014). Neutral impact on systolic and diastolic cardiac function of 2 years of intensified multi-intervention in type 2 diabetes: The randomized controlled Asker and Bærum Cardiovascular Diabetes (ABCD) study. (ekstern lenke)
• Bersvendsen, Jørn; Beitnes, Jan Otto; Urheim, Stig et al. (2014). Automatic measurement of aortic annulus diameter in 3-dimensional transoesophageal echocardiography. (ekstern lenke)
• Hansegård, Jøger; Urheim, Stig; Lunde, Ketil et al. (2009). Semi-automated quantification of left ventricular volumes and ejection fraction by real-time three-dimensional echocardiography. (ekstern lenke)
• Bjørnstad, Hans H; Bjørnstad, Tor H.; Urheim, Stig et al. (2009). Long-Term Assessment of Electrocardiographic and Echocardiographic Findings in Norwegian Elite Endurance Athletes. (ekstern lenke)
• Hansegård, Jøger; Urheim, Stig; Lunde, Ketil et al. (2007). Constrained Active Appearance Models for Segmentation of Triplane Echocardiograms. (ekstern lenke)
• Skulstad, Helge; Urheim, Stig; Edvardsen, Thor et al. (2006). Grading of myocardial dysfunction by tissue Doppler echocardiography: a comparison between velocity, displacement, and strain imaging in acute ischemia. (ekstern lenke)
• Wang, J; Urheim, Stig; Korinek, J et al. (2006). Analysis of Postsystolic Myocardial Thickening Work in Selective Myocardial Layers During Progressive Myocardial Ischemia. (ekstern lenke)
• Urheim, Stig; Rabben, Stein Inge; Skulstad, Helge et al. (2005). Regional myocardial work by strain Doppler echocardiography and LV pressure: a new method for quantifying myocardial function. (ekstern lenke)
• Lyseggen, Erik; Rabben, Stein Inge; Skulstad, Helge et al. (2005). Myocardial Acceleration During Isovolumic Contraction, Relationship to Contractility. (ekstern lenke)
• Lyseggen, Erik; Skulstad, Helge; Helle-Valle, T et al. (2005). Myocardial strain analysis in acute coronary occlusion. A tool to assess myocadial viability and reperfusion. (ekstern lenke)
• Urheim, Stig; Abraham, T P; Korinek, J et al. (2005). Increased right ventricular afterload induces postsystolic thickening of the ventricular septum in nonischemic hearts. (ekstern lenke)
• Wang, J; Abraham, T P; Korinek, J et al. (2005). Delayed onset of subendocardial diastolic thinning at rest identifies hypoperfused myocardium. (ekstern lenke)
• Urheim, Stig; Cauduro, S; Frantz, R et al. (2005). Relation of tissue displacement and strain to invasively determined right ventricular stroke volume. (ekstern lenke)
• Wang, J; Korinek, J; Urheim, Stig et al. (2005). Direct identification of subendocardial postsystolic thickening by intracardiac M-mode Doppler echocardiography. (ekstern lenke)
• Hansegård, Jøger; Urheim, Stig; Steen, Erik et al. (2005). Detection of the myocardial boundary in the left ventricle from simultaneously acquired triplane ultrasound images using multi view active appearance motion models. (ekstern lenke)
• Lueder, Thomas von; Kjekshus, Harald; Edvardsen, Thor et al. (2004). Mechanisms of elevated plasma endothelin-1 in CHF: congestion increases pulmonary synthesis and secretion of endothelin-1. (ekstern lenke)
• Rabben, S.I; Stergiopulos, N; Hellevik, LR et al. (2004). An ultrasound-based method for determining pulse wave velocity in fuperficial arteries. (ekstern lenke)
• Urheim, Stig; Edvardsen, Thor; Steine, Kjetil et al. (2003). Postsystolic shortening of ischemic myocardium: a mechanism of abnormal intraventricular filling. (ekstern lenke)
• Urheim, Stig; Bjørnerheim, R.; Endresen, Knut et al. (2002). Quantification of left ventricular diastolic pressure-volume relations during routine cardiac catheterization by two-dimensional digital echo quantification and left ventricula micromanometer. (ekstern lenke)
• Skulstad, Helge; Edvardsen, Thor; Urheim, Stig et al. (2002). Postsystolic shortening in ischemic myocardium:active contraction or passive recoil?. (ekstern lenke)
• Edvardsen, Thor; Urheim, Stig; Skulstad, Helge et al. (2002). Quantification of left ventricular systolic function by tissue Doppler echocardiography: Added value of measuring pre- and postejection velocities in ischimic myocardium. (ekstern lenke)
• Edvardsen, Thor; Urheim, Stig; Skulstad, Helge et al. (2000). Relative timing of myocardial and transmitral early filling velocities - a non-invasive marker of LV restoring forces. (ekstern lenke)
• Urheim, Stig; Edvardsen, Thor; Torp, Hans et al. (2000). Myocardial strain by Doppler echocardiography. Validation of a new method to quantify regional mayocardial function. (ekstern lenke)

Vitenskapelig oversiktsartikkel/review

• Ali, Abukar Mohamed; Packer, Erik; Omdal, Tom Roar et al. (2023). Echocardiography Assessment of Rheumatic Heart Disease: Implications for Percutaneous Balloon Mitral Valvuloplasty. (ekstern lenke)
• Dingen, Håvard; Urheim, Stig; Jordal, Stina et al. (2023). Echocardiographic assessment in infective endocarditis: Transthoracic or transesophageal echocardiography, or both?: Echocardiography in endocarditis. (ekstern lenke)
• Saeed, Sahrai; Ali, Abukar Mohamed; Wasim, Daanyaal et al. (2023). Correlation between Murmurs and Echocardiographic Findings; From an Imaging Cardiologist Point of View. (ekstern lenke)
• Smiseth, Otto A.; Torp, Hans; Opdahl, Anders et al. (2016). Myocardial strain imaging: How useful is it in clinical decision making?. (ekstern lenke)
• Urheim, Stig; Andersen, Kai; Aakhus, Svend (2012). Tredimensjonal ultralydundersøkelse i kardiologisk diagnostikk. (ekstern lenke)

Leder

• Cramariuc, Dana; Urheim, Stig (2023). Pulmonary hypertension in significant aortic valve disease: a dive into real-world data. (ekstern lenke)

Poster

• Aguilera, Hans Martin Dahl; Persson, Robert; Haaverstad, Rune et al. (2022). Mitral annulus strain by 3D echo reveals regional annular dysfunction in Barlow's disease. (ekstern lenke)
• Skulstad, Helge; Lyseggen, Erik; Edvardsen, Thor et al. (2003). The ratio between systolic lengthening and postsystolic shortening: a marker of myocardial viability. (ekstern lenke)
• Edvardsen, Thor; Urheim, Stig; Steine, Kjetil et al. (1999). Regional diastolisk funksjon under ischemi målt ved vevsdoppler. (ekstern lenke)
• Edvardsen, Thor; Urheim, Stig; Steine, Kjetil et al. (1999). Regional diastolic function during ischemia meassured with doppler tissue imaging. (ekstern lenke)
• Urheim, Stig; Steine, Kjetil; Edvardsen, Thor et al. (1997). Intraventrikulær diastolisk shunting ved akutt myokardischemi. (ekstern lenke)

Vitenskapelig foredrag

• Dahl, Sigrid Kaarstad; Simonsen, Are Johan; Leinan, Paul Roger et al. (2019). Beslutningsstøtte for behandlingsplanlegging av hjertesykdom basert på pasient-spesifikke strømningssimulering i hjertet. (ekstern lenke)
• Hansegård, Jøger; Urheim, Stig; Steen, Erik et al. (2005). Detection of the myocardial boundary in the left ventricle from simultaneously acquired triplane ultrasound images using multi view active appearance motion models. (ekstern lenke)
• Lyseggen, Erik; Skulstad, Helge; Helle-Valle, Thomas et al. (2004). Echocardiographic Markers of Myocardial Viability and Reperfusion - Combined Assessment of Segmental Lengthening/Shortening Ratio and Regional Compliance by Strain Doppler Echocardiography. (ekstern lenke)
• Lyseggen, Erik; Skulstad, Helge; Helle-Valle, Thomas et al. (2004). Echocardiographic Markers of Myocardial Viability and Reperfusion - Combined Assessment of Segmental Lengthening/Shortening Ratio and Regional Compliance by Strain Doppler Echocardiography. (ekstern lenke)
• Lueder, Thomas von; Kjekshus, Harald; Øie, Erik et al. (2003). Molecular Basis of Increased Plasma Endothelin-1 Levels in Congestive Heart Failure. (ekstern lenke)
• Lueder, Thomas von; Kjekshus, Harald; Edvardsen, Thor et al. (2003). Molecular Mechanisms of Increased Plasma Endothelin-1 Levels in Congestive Heart Failure. (ekstern lenke)
• Lueder, T Von; Kjekshus, Harald; Edvardsen, Thor et al. (2003). Regulation of endothelin-1 in heart failure: Pulmonary congetion increases plasma ET-1 levels by augmentin regional tissue ECE-1 activity. (ekstern lenke)
• Lueder, T Von; Kjekshus, Harald; Edvardsen, Thor et al. (2003). Regulation of emdothelin-1 in heart failure: Pulmonary congestion increases plasma ET-1 levels by augmentin regional tissue ECE-1 activity. (ekstern lenke)
• Lueder, T Von; Kjekshus, Harald; Edvardsen, Thor et al. (2003). Molecular mechanisms of increased plasma endothelin-1 levels in congestive heart failure. (ekstern lenke)
• Lueder, T Von; Kjekshus, Harald; Øie, Erik et al. (2003). Molecular basis of increased plasma endothelin-1 levels in congestive heart failure. (ekstern lenke)
• Lueder, T Von; Kjekshus, Harald; Edvardsen, Thor et al. (2003). Regulation of ET-1 in heart failure: Pulmonary congestion increase plasma ET-1 levels by up-regulation of regional tissue ECE-1 activity. (ekstern lenke)
• Lueder, Thomas von; Kjekshus, Harald; Edvardsen, Thor et al. (2003). Regulation of Endothelin-1 in Heart Failure: Pulmonary Congestion Increases Plasma ET-1 Levels by Augmenting Regional Tissue ECE-1 Activity. (ekstern lenke)
• Lueder, Thomas von; Kjekshus, Harald; Edvardsen, Thor et al. (2003). Regulation of ET-1 in Heart Failure: Pulmonary Congestion Increases Plasma ET-1 Levels by Up-Regulation of Regional Tissue ECE-1 Activity. (ekstern lenke)
• Urheim, Stig; Rabben, Stein Inge; Lyseggen, Erik et al. (2002). Regional myocardial work index by strain Doppler echocardiography and left ventricular pressure - a new method for quantifying myocardial function. (ekstern lenke)
• Edvardsen, Thor; Urheim, Stig; Skulstad, Helge et al. (2002). Identification of dyskinetic myocardium by Doppler tissue imaging - the importance of isovolumic phase analysis. (ekstern lenke)
• Skulstad, Helge; Urheim, Stig; Edvardsen, Thor et al. (2002). Tissue Doppler Echocardiography and strain Doppler echocardiography: a head-to-head comparision in moderate and severe ischemia. (ekstern lenke)
• Lyseggen, Erik; Rabben, Stein Inge; Skulstad, Helge et al. (2002). Myocardial acceleration during isovolumic contraction - is it really a sensitive index of myocardial function?. (ekstern lenke)
• Lyseggen, Erik; Skulstad, Helge; Urheim, Stig et al. (2002). Myocardial elasticity by Strain Doppler Echocardiography - a method to identify viable myocardium. (ekstern lenke)
• Rabben, Stein Inge; Stergiopulos, N; Hellevik, LR et al. (2002). An ultrasound-based method for determining pulse-wave velocity in the carotid artery. (ekstern lenke)
• Skulstad, Helge; Rabben, Stein Inge; Edvardsen, Thor et al. (2002). Mechanisms of post-ejection shortening in ischemic myocardium: an answer by regional pressure-segment length analysis. (ekstern lenke)
• Urheim, Stig; Bjørnerheim, Reidar; Endresen, Knut et al. (2001). Quantifications of left ventricular diastolic pressure-volume relations during routine catherization by two-dimensional digital echo quanticication and LV micromanometer. (ekstern lenke)
• Urheim, Stig; Edvardsen, Thor; Skulstad, Helge et al. (2001). Assessment of regional myocardial function by combined color flow imaging and strain Doppler echocardiography. (ekstern lenke)
• Skulstad, Helge; Edvardsen, Thor; Urheim, Stig et al. (2001). Afterload depedency of contraction patterns in ischaemic myocardial - consequences for assessment of myocardial viability by strain Doppler echocardiography. (ekstern lenke)
• Kjekshus, Harald; Edardsen, Tor; Urheim, Stig et al. (2001). Regional levels of plasma endothelin:Important roles of the pulmonary and splanchnic circulations in the secretions and clearance of ET-1 during the development of heart failure. (ekstern lenke)
• Urheim, Stig (2001). Studies of ventricular fluid-wall interactions by combined imaging of myocardial strain and intraventricular flow. Mini-symposium: Myocardial tissue Doppler and strain echocardiography. How to improve the techniques. (ekstern lenke)
• Urheim, Stig (2001). Validation of stranin Doppler echocardiography. (ekstern lenke)
• Urheim, Stig (2001). Studies of ventricular fluid wall interactions by combined imaging of myocardial strain and intraventricular flow. (ekstern lenke)
• Urheim, Stig (2001). Assessment of regional caontractile function by Doppler-derived strain. (ekstern lenke)
• Urheim, Stig (2001). Urheim, S. Validation of stranin Doppler echocardiography. (ekstern lenke)
• Urheim, Stig; Kjekshus, Harald; Edvartsen, T. et al. (2001). Marked non-uniformity in myocardial strain rate and strain by Doppler echocardiography in pacing-induced heart failure. (ekstern lenke)
• Kjekshus, Harald; Smiseth, Otto A.; Edvardsen, Thor et al. (2000). Regional levels of plasma endothelin: Important roles of the pulmonary and splanchnic circulations in the secretion and clearance of plasma ET-1 during the development of heart failure. (ekstern lenke)
• Edvardsen, Thor; Urheim, Stig; Skulstad, Helge et al. (1999). Relative timing of myocardial and transmitral early filling velocities - a non-invasive marker of LV restoring forces. (ekstern lenke)
• Edvardsen, Thor; Urheim, Stig; Steine, Kjetil et al. (1999). Doppler tissue imaging expresses non-uniformity of left ventricular diastolic function during regional ischemia. (ekstern lenke)
• Edvardsen, Thor; Urheim, Stig; Steine, Kjetil et al. (1998). Reversal of intraventricular flow during isovolumic relaxation - a marker of anterior myocardial ischemia. (ekstern lenke)
• Urheim, Stig; Steine, Kjetil; Edvardsen, Thor et al. (1997). Intraventricular diastolic shunting during acute myocardial ischemia. (ekstern lenke)
• Urheim, Stig; Steine, Kjetil; Edvardsen, Thor et al. (1997). Intraventrikulær diastolisk shunting ved akutt myokardischemi. (ekstern lenke)
• Edvardsen, Thor; Urheim, Stig; Steine, Kjetil et al. (1997). Reversal of intraventricular flow during isovolumic relaxation - A marker of anterior myocardial ischaemia. (ekstern lenke)

Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

• Aguilera, Hans Martin Dahl; Prot, Victorien Emile; Skallerud, Bjørn Helge et al. (2019). Finite Element Analysis of a Barlow Mitral Valve: Patient Specific Geometry and Comparison With Three-Dimensional Echocardiographic Data. (ekstern lenke)
• Leinan, Paul Roger; Skjetne, Paal; Morud, John et al. (2017). Velocity profiles in a 2D model of the left ventricular outflow tract, pathological case study using PIV and CFD modeling. (ekstern lenke)

Doktorgradsavhandling

• Urheim, Stig (2005). Quantification of myocardial function by Doppler echocardiography. (ekstern lenke)

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