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Knut Matres bilde

Knut Matre

Emeritus
  • E-postknut.matre@uib.no
  • Besøksadresse
    Haukeland universitetssykehus, Laboratoriebygget
    5009 Bergen
  • Postadresse
    Postboks 7804
    5020 Bergen

Ultralydmetoder i medisin

Hjertekontraksjon

Akustiske fantomer

Underviser ultralydmetoder for studenter i:

medisin

fysikk

legers videre- og etterutdanning

Lærebok
  • Vis forfatter(e) (2009). Innføring i abdominal ultrasonografi. Fagbokforlaget.
Vitenskapelig artikkel
  • Vis forfatter(e) (2022). Markers of Subclinical Atherosclerosis in Severe Obesity and One Year after Bariatric Surgery. Journal of Clinical Medicine.
  • Vis forfatter(e) (2021). The influence of region of interest width in fetal 2D-speckle tracking echocardiography late in pregnancy. The International Journal of Cardiovascular Imaging.
  • Vis forfatter(e) (2021). Speckle tracking derived strain in neonates: planes, layers and drift. The International Journal of Cardiovascular Imaging. 1-13.
  • Vis forfatter(e) (2021). One-year impact of bariatric surgery on left ventricular mechanics: results from the prospective FatWest study. European Heart Journal Open (EHJ Open).
  • Vis forfatter(e) (2021). Impact of arterio-ventricular interaction on first-phase ejection fraction in aortic stenosis. European Heart Journal-Cardiovascular Imaging. 1-8.
  • Vis forfatter(e) (2021). Effect of temporal and spatial smoothing on speckle–tracking-derived strain in neonates. Pediatric Cardiology. 743-752.
  • Vis forfatter(e) (2020). Left ventricular myocardial oxygen demand and subclinical dysfunction in patients with severe obesity referred for bariatric surgery. NMCD. Nutrition Metabolism and Cardiovascular Diseases. 1-9.
  • Vis forfatter(e) (2020). Covariables of myocardial function in women and men with increased body mass index. High Blood Pressure & Cardiovascular Prevention. 1-8.
  • Vis forfatter(e) (2019). Left ventricular myocardial dysfunction in young and middle-aged ischemic stroke patients: the Norwegian stroke in the young study. Journal of Hypertension. 538-545.
  • Vis forfatter(e) (2019). Left ventricular dysfunction after two hours of polarizing or depolarizing cardioplegic arrest in a porcine model. Perfusion. 67-75.
  • Vis forfatter(e) (2019). Effect of fitness on cardiac structure and function in overweight and obesity (the FATCOR study). NMCD. Nutrition Metabolism and Cardiovascular Diseases. 710-717.
  • Vis forfatter(e) (2019). A left ventricular phantom for 3D echocardiographic twist measurements. Biomedizinische Technik.
  • Vis forfatter(e) (2018). Left Ventricular Systolic Myocardial Function in Ankylosing Spondylitis . Arthritis care & research. 1276-1283.
  • Vis forfatter(e) (2017). Myocardial energy metabolism and ultrastructure with polarizing and depolarizing cardioplegia in a porcine model . European Journal of Cardio-Thoracic Surgery. 180-188.
  • Vis forfatter(e) (2017). Measured acoustic intensities for clinical diagnostic ultrasound transducers and correlation with thermal index. Ultrasound in Obstetrics and Gynecology. 236-241.
  • Vis forfatter(e) (2016). The influence of acute unloading on left ventricular strain and strain rate by speckle tracking echocardiography in a porcine model. American Journal of Physiology. Heart and Circulatory Physiology. H1330-H1339.
  • Vis forfatter(e) (2016). Optimal acquisition settings for speckle tracking echocardiography-derived strains in infants: An in vitro study. Ultrasound in Medicine and Biology. 1660-1670.
  • Vis forfatter(e) (2016). Myocardial function after polarizing versus depolarizing cardiac arrest with blood cardioplegia in a porcine model of cardiopulmonary bypass. European Journal of Cardio-Thoracic Surgery. 130-139.
  • Vis forfatter(e) (2016). Measured acoustic intensities for clinical diagnostic ultrasound transducers and correlation with thermal index. Ultrasound in Obstetrics and Gynecology. 236-241.
  • Vis forfatter(e) (2016). Disease activity is associated with reduced left ventricular systolic myocardial function in patients with rheumatoid arthritis. Annals of the Rheumatic Diseases. 371-376.
  • Vis forfatter(e) (2016). Carvedilol-enriched cold oxygenated blood cardioplegia improves left ventricular diastolic function after weaning from cardiopulmonary bypass. Journal of Cardiothoracic and Vascular Anesthesia. 859-868.
  • Vis forfatter(e) (2015). Myocardial function in aortic stenosis - insights from radial multilayer Doppler strain. Cardiovascular Ultrasound. 8 sider.
  • Vis forfatter(e) (2015). Intracoronary insulin administered at reperfusion in a porcine model of acute coronary syndrome. European Heart Journal: Acute Cardiovascular Care. 230-240.
  • Vis forfatter(e) (2015). Esmolol added in repeated, cold, oxygenated blood cardioplegia improves myocardial function after cardiopulmonary bypass. Journal of Cardiothoracic and Vascular Anesthesia. 684-693.
  • Vis forfatter(e) (2014). Reperfusion therapy with low-dose insulin or insulin-like growth factor 2; myocardial function and infarct size in a porcine model of ischaemia and reperfusion. Basic & Clinical Pharmacology & Toxicology. 438-447.
  • Vis forfatter(e) (2014). Effect of microbubble contrast on intracranial blood flow velocity assessed by transcranial Doppler. Journal of Ultrasound. 21-26.
  • Vis forfatter(e) (2013). The effects of reducing the thermal index for bone from 1.0 to 0.5 and 0.1 on common obstetric pulsed wave Doppler measurements in the second half of pregnancy. Acta Obstetricia et Gynecologica Scandinavica. 790-796.
  • Vis forfatter(e) (2013). The effect of ultrasound output level on obstetric biometric measurements. Ultrasound in Medicine and Biology. 37-43.
  • Vis forfatter(e) (2013). Multi-layer radial systolic strain vs. one-layer strain for confirming reperfusion from a significant non-occlusive coronary stenosis. European Heart Journal-Cardiovascular Imaging. 24-37.
  • Vis forfatter(e) (2013). Is strain by Speckle Tracking Echocardiography dependent on user controlled spatial and temporal smoothing? An experimental porcine study. Cardiovascular Ultrasound. 14 sider.
  • Vis forfatter(e) (2013). Accuracy of real-time single- and multi-beat 3-D speckle tracking echocardiography in vitro. Ultrasound in Medicine and Biology. 1006-1014.
  • Vis forfatter(e) (2012). Ultrasound safety in early pregnancy: reduced energy setting does not compromise obstetric Doppler measurements. Ultrasound in Obstetrics and Gynecology. 438-443.
  • Vis forfatter(e) (2012). Rome III subgroups of functional dyspepsia exhibit different characteristics of antral contractions measured by strain rate imaging. Ultraschall in der Medizin. 233-240.
  • Vis forfatter(e) (2011). Left ventricular strain, rotation, and torsion as markers of acute myocardial ischemia. American Journal of Physiology. Heart and Circulatory Physiology. H2142-H2154.
  • Vis forfatter(e) (2011). Antiapoptotic Intervention in Repeated Blood Cardioplegia: A Porcine Study of Myocardial Function. Annals of Thoracic Surgery. 784-792.
  • Vis forfatter(e) (2010). Radial deformation by tissue Doppler imaging in multiple myocardial layers. Scandinavian Cardiovascular Journal. 82-91.
  • Vis forfatter(e) (2010). Myocardial deformation in aortic valve stenosis – relation to left ventricular geometry. Heart. 106-112.
  • Vis forfatter(e) (2009). Strain measurement during antral contractions by ultrasound strain rate imaging: influence of erythromycin. Neurogastroenterology and Motility. 170-179.
  • Vis forfatter(e) (2009). Quantification of Valvular Regurgitation Area and Geometry Using HPRF 3-D Doppler. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. 975-982.
  • Vis forfatter(e) (2009). Multidose cold oxygenated blood is superior to a single dose of bretschneider HTK-cardioplegia in the pig. Annals of Thoracic Surgery. 1205-1213.
  • Vis forfatter(e) (2008). Freehand real-time elastography: Impact of scanning parameters on image quality and In Vitro intra- and interobserver validations. Ultrasound in Medicine and Biology. 1638-1650.
  • Vis forfatter(e) (2008). Esmolol before 80 min of cardiac arrest with oxygenated cold blood cardioplegia alleviates systolic dysfunction. An experimental study in pigs. European Journal of Cardio-Thoracic Surgery. 9-17.
  • Vis forfatter(e) (2008). Crohn's disease: Comparison of in vitro ultrasonographic images and histology. Scandinavian Journal of Gastroenterology. 719-726.
  • Vis forfatter(e) (2007). Three-dimensional ultrasonography can detect the modulation of kidney volume in two-kidney, one-clip hypertensive rats. Ultrasound in Medicine and Biology. 1882-1888.
  • Vis forfatter(e) (2007). Multilayer radial systolic strain can identify subendocardial ischemia: An experimental tissue Doppler imaging study of the porcine left ventricular wall. European Heart Journal-Cardiovascular Imaging. 420-430.
  • Vis forfatter(e) (2006). In vitro strain measurement in the porcine antrum using ultrasound Doppler strain rate imaging. Ultrasound in Medicine and Biology.
  • Vis forfatter(e) (2006). In vitro strain measurement in the porcine antrum using Doppler strain rate imaging. Ultrasound in Medicine and Biology. 513-522.
  • Vis forfatter(e) (2006). A multimodal laser Doppler and endosonographic distension device for studying mechanosensation and mucosal blood flow in the oesophagus. Neurogastroenterology and Motility. 243-248.
  • Vis forfatter(e) (2005). Radial strain gradient across the normal myocardial wall in open-chest pigs measured with Doppler strain rate imaging. Journal of the American Society of Echocardiography. 1066-1073.
  • Vis forfatter(e) (2005). Assessment of regional timing of left ventricular sytolic longitudinal movement by Doppler tissue synchronization imaging in structurally normal hearts. European Heart Journal-Cardiovascular Imaging. 336-343.
  • Vis forfatter(e) (2004). Volume estimation of small phantoms and rat kidneys using three-dimensional ultrasonography and a position sensor. Ultrasound in Medicine and Biology. 1109-1117.
  • Vis forfatter(e) (2004). An anaesthetic protocol in the young domestic pig allowing neuromuscular blockade for studies of cardiac function following cardioplegic arrest and cardiopulmonary bypass. Acta Anaesthesiologica Scandinavica. 1144-1154.
  • Vis forfatter(e) (2003). The effect of body weight on the degree of blood velocity profile skewness in the aortic annulus in domestic pigs. Laboratory Animals. Journal of the Laboratory Animal Science Association. 72-80.
  • Vis forfatter(e) (2003). In vitro evaluation of ultrasound Doppler strain rate imaging: modification for measurement in a slowly moving tissue phantom. Ultrasound in Medicine and Biology. 1725-1734.
  • Vis forfatter(e) (2002). Strain during gastric contractions can be measured using Doppler ultrasonography. Ultrasound in Medicine and Biology. 1457-1465.
  • Vis forfatter(e) (2002). Release of cardiac troponin I after temporally graded acute coronary ischaemia with electrocardiographic ST depression. International Journal of Cardiology. 243-251.
  • Vis forfatter(e) (2002). Percutaneous assessment of coronary blood flow and cardiac biomarkers. Ultrasound in Medicine and Biology. 39-48.
  • Vis forfatter(e) (2002). Mechanical properties in the human gastric antrum using B-mode ultrasonography and antral distension. American Journal of Physiology - Gastrointestinal and Liver Physiology. G368-G375.
  • Vis forfatter(e) (2002). In vitro agreement between magnetic resonance imaging and intraluminal Doppler ultrasound for high flow velocity measurements. Scandinavian Cardiovascular Journal. 180-186.
  • Vis forfatter(e) (2002). Determination of plasma volume in anaesthetized piglets using the carbon monoxide (CO) method. Laboratory Animals. Journal of the Laboratory Animal Science Association. 344-350.
  • Vis forfatter(e) (1999). Velocity distribution in the ascending aorta in pigs during chronotropic and inotropic stimulation. Scandinavian Cardiovascular Journal. 199-205.
  • Vis forfatter(e) (1999). In vitro volume estimation of kidneys using three-dimensional ultrrasonography and a position sensor. European Journal of Ultrasound. 65-73.
  • Vis forfatter(e) (1998). Resetting of RBF autoregulation during acute pressure reduction in hypertensive rats. American Journal of Physiology. Regulatory Integrative and Comparative Physiology. 343-349.
  • Vis forfatter(e) (1998). In vitro evaluation of three-dimensional ultrasonography based on magnetic scanhead tracking. Ultrasound in Medicine and Biology. 1161-1167.
  • Vis forfatter(e) (1998). Dieulafoy's vascular malformation: role of endoscopic ultrasonography in therapeutic decision-making. Scandinavian Journal of Gastroenterology. 104-108.
  • Vis forfatter(e) (1998). Dieulafoy's vascular malformation: Role of endoscopic ultrasonography in therapeutic decision-making. Scandinavian Journal of Gastroenterology. 104-108.
  • Vis forfatter(e) (1998). Dieulafoy's vascular malformation: Role of endoscopic ultrasonography in therapeutic decision-making. Scandinavian Journal of Gastroenterology. 104-108.
  • Vis forfatter(e) (1997). Effects of velocity distribution. Diameter measurement and velocity tracing on the accuracy of cardiac output measurement by pulsed Doppler echocardiography in the aortic annulus. Ultrasound in Medicine and Biology. 177-185.
  • Vis forfatter(e) (1997). Effects of velocity distribution, diameter measurement and velocity tracing on the accuracy of cardiac output measurement by pulsed Doppler echocardiography in the aortic annulus. Ultrasound in Medicine and Biology. 177-185.
  • Vis forfatter(e) (1997). Effect of velocity distribution, diameter measurement and velocity tracing on the accuracy of cardiac output measurement by pulsed Doppler echocardiography in the aortic anulus of pigs. Ultrasound in Medicine and Biology. 177-185.
  • Vis forfatter(e) (1996). Velocity distribution in the aortic annulus in patients with primary dilated and ischemic cardiomyopathy measured using Doppler ultrasound. European Journal of Ultrasound. 211-221.
  • Vis forfatter(e) (1996). Three-dimensional cross-sectional velocity distribution in the ascending aorta in cardiac patients. Clinical Physiology. 239-258.
  • Vis forfatter(e) (1996). Three-dimensional cross-sectional velocity distribution in the ascending aorta in cardiac patients. Clinical Physiology. 239-258.
  • Vis forfatter(e) (1996). A practical method for estimating enclosed volumes using 3D ultrasound. European Journal of Ultrasound. 83-92.
  • Vis forfatter(e) (1995). Volume measurements of the antrum by 3D-ultrasonography and flow measurements through the pylorus by duplex technique. Digestive Diseases and Sciences. 97-100.
  • Vis forfatter(e) (1995). Velocity distribution in the left ventricular outflow tract in patients with aortic stenosis: effect on the measurement of aortic valve area by using continuity equation. European Heart Journal. 383-393.
  • Vis forfatter(e) (1995). The velocity distribution in the aortic anulus at different times during systole is mainly determined by the pattern of flow convergence in the left ventricular outflow tract: an experimental study using Doppler colour flow mapping. Clinical Physiology. 597-610.
  • Vis forfatter(e) (1995). Intraluminal recording of cross-sectional blood velocity distribution of human ascending aorta by ultrasound Doppler technique. Medical and Biological Engineering and Computing. 171-177.
  • Vis forfatter(e) (1995). In vivo comparison of 3D ultrasonography and Magnetic Response Imaging in volume estimation of human kidneys. Ultrasound in Medicine and Biology. 25-32.
  • Vis forfatter(e) (1994). Volume measurement of gastric antrum by 3-D ultrasonography and flow measurements through the pylorus by duplex technique. Digestive Diseases and Sciences. 97-100.
  • Vis forfatter(e) (1994). Volume estimation of the gastric antrum and the gallbladder in patients with non-ulcer dyspepsia and erosive prepyloric changes, using three-dimensional ultrasonography. Neurogastroenterology and Motility. 263-270.
  • Vis forfatter(e) (1994). Myocardial contraction patterns in non-ischaemic and ischaemic regions during acute coronary insufficiency. European Heart Journal. 424-433.
  • Vis forfatter(e) (1994). Intraluminal recording of cross-sectional blood velocity distribution of human ascending aorta by ultrasound doppler technique. Medical and Biological Engineering and Computing. 171-177.
  • Vis forfatter(e) (1994). In vitro evaluation of three-dimensional ultrasonography in volume estimation of abdominal organs. (Tilknyttet prosjektet: Pasienter med funksjonell dyspepsi studert v.h.a. 3-dimensjonal ultralyd.). Ultrasound in Medicine and Biology. 157-165.
  • Vis forfatter(e) (1994). Comparison of transit-time and Doppler ultrasound methods for measurement of flow in aortocoronary bypass grafts during cardiac surgery. The thoracic and cardiovascular surgeon. 170-174.
  • Vis forfatter(e) (1994). Comparison of transit-time and Doppler ultrasound methods for measurement of flow in aortocoronary bypass grafts during cardiac surgery. The thoracic and cardiovascular surgeon. 170-174.
  • Vis forfatter(e) (1993). Velocity distribution in the left ventricular outflow tract and the aortic anulus measured with Doppler colour flow mapping in normal subjects. European Heart Journal. 1179-1188.
  • Vis forfatter(e) (1993). New device shows enlarged antrum in dyspeptic patients. Internat Gastroenterol Observer. 5-6.
  • Vis forfatter(e) (1992). Untersuchungen der gastroduodenalen Motilität mit Realtime Ultrasonographie. Ultraschall in Klinik und Praxis.
  • Vis forfatter(e) (1992). Trabsendoskopische Ultraschalldiagnostik bei Läsionen im Oberen Verdauungstrakt im Rahmen der Routineendoskopi. Ultraschall in Klinik und Praxis. 99-103.
  • Vis forfatter(e) (1992). Effect of mesangiolysis on autoregulation of renal blood flow and glomerular filtration in rats. American Journal of Physiology - Renal, fluid and electrolyte physiology. F361-F366.
  • Vis forfatter(e) (1992). Coronary artery stenosis provokes nonuniformity of twodimensional deformation in the anterior wall of the feline left ventricle. European Heart Journal. 981-989.
  • Vis forfatter(e) (1992). Coronary artery stenosis provokes non-uniformity of two-dimensional deformation in the anterior wall of the feline left ventricle. European Heart Journal. 981-989.
  • Vis forfatter(e) (1992). Antroduodenal motility and movements of luminal contents studied by Duplex-sonography. Gastroenterology. 1583-1590.
  • Vis forfatter(e) (1990). Gradual reduction of coronary perfusion pressure in cats: changes in transmural distribution of blood flow. Scandinavian Journal of Clinical and Laboratory Investigation. 787-796.
  • Vis forfatter(e) (1987). Local myocardial function following coronary occlusion in cats. Effect on non-ischaemic regions. Clinical Physiology. 511-523.
Faglig foredrag
  • Vis forfatter(e) (2018). Left ventricular dysfunction after two hours of polarizing or depolarizing cardioplegic arrest in a porcine model of cardiopulmonary bypass.
Vitenskapelig foredrag
  • Vis forfatter(e) (2016). Myocardial energy status and ultrastructure with polarizing and depolarizing cardioplegic arrest in a porcine model.
  • Vis forfatter(e) (2014). Polariserende versus depolariserende kardioplegi med repetert, kaldt oksygenert blod i en eksperimentell dyremodell.
  • Vis forfatter(e) (2013). Quantitative myocardial perfusion analysis with contrast-enhanced ultrasound bolus tracking - preliminary animal results.
  • Vis forfatter(e) (2012). Multilayer radial strain analysis can detect successful reperfusion from a significant non-occlusive coronary stenosis. An experimental porcine study.
  • Vis forfatter(e) (2012). Experimental and clinical measurements of multilayer strain using TDI.
  • Vis forfatter(e) (2011). Tissue doppler imaging in open-chest pigs before and after pericardiotomy.
  • Vis forfatter(e) (2011). Multilayer strain can identify reperfusion from coronary stenosis.
  • Vis forfatter(e) (2011). Left ventricular strain and rotation as markers of acute myocardial ischemia.
  • Vis forfatter(e) (2011). Esmolol added to cold repeated oxygenated blood cardioplegia may increase cardiac function the first hours after declamping in a swine model.
  • Vis forfatter(e) (2010). Multilayer radial strain measurements detect reduction in myocardial perfusion before longitudinal, circumferential, radial strain and rotation. An experimental porcine study.
  • Vis forfatter(e) (2010). Low-grade coronary stenosis is first detected by multilayer strain measurements. An experimental porcine study.
  • Vis forfatter(e) (2010). Insulin-like growth factor-II in blood cardioplegia enhances myocardial contractility and stimulates anti-apoptotic mechanisms after reperfusion.
  • Vis forfatter(e) (2009). Insulinlignende vekstfaktor-II i blodkardioplegi øker kontraktilitet av myokard og stimulerer anti-apoptotiske mekanismer etter reperfusjon.
  • Vis forfatter(e) (2008). Quantification of Valvular Regurgitation Area and Geometry using HPRF 3D Doppler.
  • Vis forfatter(e) (2005). Muscularis mucosae, fibrosis and nodular lymphocyte aggregates in Crohn's disease - novel ultrasonographic findings in vitro.
  • Vis forfatter(e) (2001). Percutaneous assessment of coronary blood flow and cardiac markers.
  • Vis forfatter(e) (2000). A novel method using color Doppler ultrasonography to study relative strain of the muscle layers during antral contractions.
  • Vis forfatter(e) (2000). A novel method using color Doppler ultrasonography to study relative strain of the muscle layers during antral contractions.
  • Vis forfatter(e) (1996). Anpassning av TEE proben for stadieindelning av tumører i øvre gastrointestinalkanalen och preliminære resultat av 3D visualisering med multiplanprob.
  • Vis forfatter(e) (1995). In vitro evaluation of three-dimensional ultrasonography based on magnetic scanhead tracking. Oral presentation.
  • Vis forfatter(e) (1994). In Vivo Comparison of 3D Ultrasonography and Magnetic Resonance Imaging in Volume Estimation of Abdominal Organs.
  • Vis forfatter(e) (1994). Evaluering av 3D ultrasonografi in vitro. (Tilknyttet prosjektet: Pasienter med funksjonell dyspepsi studert v.h.a. 3-dimensjonal ultralyd.).
  • Vis forfatter(e) (1994). 3D ultrasonography compared with magnetic resonance imaging in volume estimation of human kidneys in vivo.
Leder
  • Vis forfatter(e) (2013). 22nd World Congress on Ultrasound in Obstetrics and Gynecology, 9-13 September 2012, Copenhagen, Denmark: presentations and awards. Ultrasound in Obstetrics and Gynecology. 114-120.
Fagbok
  • Vis forfatter(e) (2011). 2011 Joint National Ph.D. Conference in Medical Imaging and MedViz Conference. Norwegian Research School in Medical Imaging, MedViz, University of Bergen.
  • Vis forfatter(e) (2009). Innføring i abdominal ultrasonografi. Fagbokforlaget.
Mastergradsoppgave
  • Vis forfatter(e) (2011). Utvikling av testrigg for ultralyd volum- og strainmålingar i hjarta.
  • Vis forfatter(e) (2011). Ultrasound phantom for myocardium. (Master thesis).
Populærvitenskapelig artikkel
  • Vis forfatter(e) (1996). Evaluering av undervisningen i indremedisin ved Universitetet i Bergen. Effekt av økning i studenttall, ny studieplan og innføring i nytt studiested. UPED-skrift. 142-161.
  • Vis forfatter(e) (1996). Evaluering av undervisningen i indremedisin ved Universitetet i Bergen. Effekt av økning i studenttall, ny studieplan og innføring i nytt studiested. UPED-skrift. 142-161.
Brev til redaktøren
  • Vis forfatter(e) (2016). Response to: 'Disease activity and left ventricular systolic function in rheumatoid arthritis' by Giollo et al. Annals of the Rheumatic Diseases. e84-e84.
  • Vis forfatter(e) (2016). Reply: Esmolol Added in Cardioplegia. Journal of Cardiothoracic and Vascular Anesthesia. e9-e10.
Doktorgradsavhandling
  • Vis forfatter(e) (2019). Polarizing versus depolarizing blood cardioplegia. An experimental study of myocardial function, metabolism and ultrastructure following cardiopulmonary bypass and cardioplegic arrest.
  • Vis forfatter(e) (2017). Cardiac performance after adrenergic blocker-enriched blood cardioplegia. An evaluation of left ventricular function by pressure volume loops and myocardial deformation.
  • Vis forfatter(e) (2015). Myocardial protection and anti-apoptotic intervention at reperfusion. Experimental studies in translational porcine models of myocardial ischemia and reperfusion.
  • Vis forfatter(e) (2013). Myocardial deformation during ischemia and reperfusion. An experimental study of regional left ventricular function by Tissue Doppler Imaging and Speckle Tracking Echocardiography.
  • Vis forfatter(e) (2011). A Porcine Model for Studies of Cardioplegia. Assessment of left ventricular myocardial function after cardioplegic arrest by pressure-volume loops, tissue Doppler imaging and microspheres.
  • Vis forfatter(e) (2009). Left ventricular structure and systolic function in aortic valve stenosis : influence of global left ventricular load, gender and hypertension. 1-2009.
  • Vis forfatter(e) (1988). Invasive ultrasound for assessment of cardiac function : application of transit-time ultrasound for evaluation of myocardial contraction, and Doppler ultrasound for measure- ment of cardiac output.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
  • Vis forfatter(e) (2012). Real Time Image-Based Tracking of 4D Ultrasound Data. 8 sider.
  • Vis forfatter(e) (2011). Medical imaging. 28 sider.
  • Vis forfatter(e) (2005). The Use of Ultrasound in Biomechanics. 31 sider.
  • Vis forfatter(e) (2005). Basic Technologies in Ultrasound. 21 sider.
  • Vis forfatter(e) (1995). In vitro evaluation of three dimensional ultrasonography in volume estimation of organs. 2 sider.
Sammendrag/abstract
  • Vis forfatter(e) (2016). A twisting left ventricular ultrasound phantom for evaluation of 3D speckle tracking twist measurements. European Heart Journal, Supplement. ii51-ii51.
  • Vis forfatter(e) (2015). Optimizing speckle tracking echocardiography strain measurements in infants: an in-vitro phantom study . European Heart Journal-Cardiovascular Imaging. 102-129.
  • Vis forfatter(e) (2014). Determinants of left ventricular systolic function after transcatheter aortic valve implantation. European Heart Journal-Cardiovascular Imaging.
  • Vis forfatter(e) (2012). The effect of ultrasound power level on obstetric biometric measurements. Acta Obstetricia et Gynecologica Scandinavica. 124-124.
  • Vis forfatter(e) (2011). Multilayer radial strain measurements can detect early reperfusion from ischemia. An experimental porcine study. European Heart Journal-Cardiovascular Imaging. ii83-ii83.
  • Vis forfatter(e) (2011). Increased systolic strain rate early after transcatheter aortic valve implantation. European Heart Journal-Cardiovascular Imaging. ii37-ii37.
  • Vis forfatter(e) (2011). Impact of aortic valve stenosis and hypertension on radial strain in multiple layers. European Heart Journal, Supplement. 1008-1009.
  • Vis forfatter(e) (2011). Accuracy of real-time single and multi beat 3D speckle tracking echocardiography in vitro. European Heart Journal-Cardiovascular Imaging. ii5-ii6.
  • Vis forfatter(e) (2010). Multilayer radial strain measurements detect reduction in myocardial perfusion before longitudinal, circumferential, radial strain and rotation. An experimental porcine study. European Heart Journal-Cardiovascular Imaging. ii3-ii4.
  • Vis forfatter(e) (2009). 2D Longitudinal Myocardial Strain: A More Sensitive Parameter of Left Ventricular Dysfunction in Aortic Valve Stenosis? Circulation. S372-S373.
  • Vis forfatter(e) (2008). The differential impact of static and pulsatile blood pressure components on regional myocardial deformation in patients with asymptomatic aortic valve stenosis. A SEAS substudy. Journal of Hypertension. S255-S256.
  • Vis forfatter(e) (2005). Systolic radial strain in 3 layers across the myocardial wall in normal humans. European Heart Journal-Cardiovascular Imaging. S92.
  • Vis forfatter(e) (2005). Radial strain in 4 layers across the left ventricular wall. An experimental TVI study in pigs demonstrating the influence of ischaemia. European Heart Journal-Cardiovascular Imaging. S192.
  • Vis forfatter(e) (1991). Left coronary artery stenosis provokes nonuniformity of myocardial contraction. Hjerteforum. Abstr. 91.
Poster
  • Vis forfatter(e) (2015). Polarizing versus depolarizing cardiac arrest with repeated, cold, oxygenated blood cardioplegia in a translational porcine model.
  • Vis forfatter(e) (2011). Doppler strain rate imaging in open-chest pigs before and after pericardiotomy.
  • Vis forfatter(e) (2011). Assessing load independent measures of contractility by pressure-strain loops during acute preload reduction.
  • Vis forfatter(e) (2004). Assessment of Regional Timing of Left Ventricular Longitudinal Movement by Tissue Synchronization Imaging.
  • Vis forfatter(e) (2002). A Doppler ultrasound method to study strain of antral contractions.
  • Vis forfatter(e) (2001). Strain rate imaging- a novel Doppler ultrasound method to study antral contractions.
  • Vis forfatter(e) (1995). The dynamic change of the systolic velocity distribution in the aortic annulus is closely related to the pattern of flow convergence in the left ventricular outflow tract.
  • Vis forfatter(e) (1993). The velocity distribution in the left ventricular outflow tract: effect on aortic stenosis area measurement.
  • Vis forfatter(e) (1993). Flow velocity distribution in the aortic annulus in patients with congestive heart failure.
Vitenskapelig oversiktsartikkel/review
  • Vis forfatter(e) (2019). What is left ventricular strain in healthy neonates? A systematic review and meta-analysis. Pediatric Cardiology. 1-11.
  • Vis forfatter(e) (2013). Doppler av kar. Indremedisineren. 14-17.

Se fullstendig oversikt over publikasjoner i CRIStin.

1. Effect of left ventricular hypertrophy on myocardial strain and torsion

2. Studies on myocardial dysfunction following ischemia and reperfusion

3. Develoment of acoustic phantoms

4. Accuracy of cardiac 3D deformation methods

 

B.Sc. i anvendt fysikk, Heriot-Watt University, Edinburgh, Skottland

M.Sc. i medisinsk fysikk, Aberdeen University, Skottland

dr.philos, Universitetet i Bergen