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Steffen Ringgaard

Research Profile

Concepts & Ideas

Living Beings

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Heart Valve Prosthesis

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Three-Dimensional Imaging

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Image Processing, Computer-Assisted

Anatomy

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Publications

TOP 3
Morten Smerup; P Agger; J M Hasenkam; P P Lunkenheimer; P Niederer; J Partridge; M Pedersen; S Petersen; Steffen Ringgaard; R H Anderson
A mathematical model of the mechanical link between shortening of the cardiomyocytes and systolic deformation of the left ventricular myocardium.
Thomas Lass; Maria Kirstine Møller-Madsen; Hans Henrik Møller Nielsen; Steffen Ringgaard; John Michael Hasenkam
Dynamic geometry of the left ventricular outflow tract of pigs with induced supravalvular aortic stenosis.
Steen Fjord Pedersen; Steffen Ringgaard; Troels Thim; Erling Falk; Won Yong Kim; William P Paaske; Samuel A Thrysøe
Determination of acute vascular injury and edema in porcine carotid arteries by T2 weighted cardiovascular magnetic resonance.

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2013: Morten Smerup; P Agger; J M Hasenkam; P P Lunkenheimer; P Niederer; J Partridge; M Pedersen; S Petersen; Steffen Ringgaard; R H Anderson
A mathematical model of the mechanical link between shortening of the cardiomyocytes and systolic deformation of the left ventricular myocardium.
Technology and health care : official journal of the European Society for Engineering and Medicine 2013;21(1):63-79.
2012: Thomas Lass; Maria Kirstine Møller-Madsen; Hans Henrik Møller Nielsen; Steffen Ringgaard; John Michael Hasenkam
Dynamic geometry of the left ventricular outflow tract of pigs with induced supravalvular aortic stenosis.
European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery 2012;42(4):e80-5.
2012: Steen Fjord Pedersen; Steffen Ringgaard; Troels Thim; Erling Falk; Won Yong Kim; William P Paaske; Samuel A Thrysøe
Determination of acute vascular injury and edema in porcine carotid arteries by T2 weighted cardiovascular magnetic resonance.
The international journal of cardiovascular imaging 2012;28(7):1717-24.
2012: Jean Farup; Tue Kjølhede; Andreas B Møller; Steffen Ringgaard; Henrik Sørensen; Poul F Vestergaard; Jens Bojsen-Møller; Ulrik Dalgas; Kristian Vissing
Muscle morphological and strength adaptations to endurance vs. resistance training.
Journal of strength and conditioning research / National Strength & Conditioning Association 2012;26(2):398-407.
2012: Maria Maersk; Steen B Pedersen; Arne Astrup; Anita Belza; Elizaveta Chabanova; Steffen Ringgaard; Hans Stødkilde-Jørgensen; Henrik Thomsen; Bjørn Richelsen
Sucrose-sweetened beverages increase fat storage in the liver, muscle, and visceral fat depot: a 6-mo randomized intervention study.
The American journal of clinical nutrition 2012;95(2):283-9.
2012: Zhiyang Zhou; Zhiyu Zhou; Lijin Zou; Cody Bünger; Shaoming Chen; Haisheng Li; Steffen Ringgaard; Jiacheng Ye; Xuenong Zou
T1ρ-MR imaging technique to distinguish four-layered zonal structure of articular cartilage for detecting early-onset osteoarthritis.
Journal of X-ray science and technology 2012;20(4):437-46.
2012: Steen Fjord Pedersen; Steffen Ringgaard; Michael P Robich; Samuel A Thrysøe; Hans Erik Bøtker; Esben S S Hansen; William P Paaske; Won Yong Kim
Assessment of intramyocardial hemorrhage by T1-weighted cardiovascular magnetic resonance in reperfused acute myocardial infarction.
Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance 2012;14():59.
2011: Torben Harsløf; Louise Wamberg; Louise Møller; Hans Stødkilde-Jørgensen; Steffen Ringgaard; Steen Pedersen; Bente L Langdahl
Rosiglitazone decreases bone mass and bone marrow fat.
The Journal of clinical endocrinology and metabolism 2011;96(5):1541-8.
2011: Casper Bindzus Foldager; Michael Pedersen; Steffen Ringgaard; Cody Bünger; Martin Lind
Chondrocyte gene expression is affected by very small iron oxide particles-labeling in long-term in vitro MRI tracking.
Journal of magnetic resonance imaging : JMRI 2011;33(3):724-30.
2011: Steen Fjord Pedersen; Steffen Ringgaard; Troels Thim; Samuel A Thrysøe; Erling Falk; William P Paaske; Won Yong Kim
Determination of edema in porcine coronary arteries by T2 weighted cardiovascular magnetic resonance.
Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance 2011;13():52.
2011: Steen F Pedersen; Samuel A Thrysøe; William P Paaske; Troels Thim; Erling Falk; Steffen Ringgaard; Won Y Kim
CMR assessment of endothelial damage and angiogenesis in porcine coronary arteries using gadofosveset.
Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance 2011;13():10.
2010: Henrik Jensen; Morten O Jensen; Morten Smerup; Steffen Ringgaard; Thomas S Sørensen; Niels Trolle Andersen; Per Wierup; J Michael Hasenkam; Sten L Nielsen
Three-dimensional assessment of papillary muscle displacement in a porcine model of ischemic mitral regurgitation.
The Journal of thoracic and cardiovascular surgery 2010;140(6):1312-8.
2010: Henrik Jensen; Morten O Jensen; Morten Smerup; Steffen Ringgaard; Niels Trolle Andersen; Per Wierup; J Michael Hasenkam; Sten L Nielsen
Does down-sized ring annuloplasty induce papillary muscle relocation in ischemic mitral regurgitation?
The Journal of heart valve disease 2010;19(6):692-700.
2010: Christoffer Laustsen; Steffen Ringgaard; Michael Pedersen; Niels Chr Nielsen
Quadrupolar-coupling-specific binomial pulse sequences for in vivo 23Na NMR and MRI.
Journal of magnetic resonance (San Diego, Calif. : 1997) 2010;206(1):139-46.
2010: Jonas Amstrup Funder; Steffen Ringgaard; Markus Winther Frost; Per Wierup; Kaj-Erik Klaaborg; Vibeke E Hjortdal; Hans Nygaard; J Michael Hasenkam
Aortic root distensibility and cross-sectional areas in stented and subcoronary stentless bioprostheses in pigs.
Interactive cardiovascular and thoracic surgery 2010;10(6):976-80.
2010: Jonas A Funder; Markus W Frost; Steffen Ringgaard; Kaj-Erik Klaaborg; Per Wierup; Vibeke E Hjortdal; Hans Nygaard; J Michael Hasenkam
In-vivo blood velocity and velocity gradient profiles downstream of stented and stentless aortic heart valves.
The Journal of heart valve disease 2010;19(3):292-303.
2009: Henrik Jensen; Morten O Jensen; Morten Smerup; Stefan Vind-Kezunovic; Steffen Ringgaard; Niels T Andersen; Rikke Vestergaard; Per Wierup; J Michael Hasenkam; Sten L Nielsen
Impact of papillary muscle relocation as adjunct procedure to mitral ring annuloplasty in functional ischemic mitral regurgitation.
Circulation 2009;120(11 Suppl):S92-8.
2009: Henrik Pedersen; Sebastian Kozerke; Steffen Ringgaard; Kay Nehrke; Won Yong Kim
k-t PCA: temporally constrained k-t BLAST reconstruction using principal component analysis.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2009;62(3):706-16.
2009: Hans Kristian Brødløs; Morten B Bramsen; Peter Agger; Henrik Jensen; Marianne Bjerre; Steffen Ringgaard; Per Wierup; Sten Lyager Nielsen; J Michael Hasenkam; Morten Smerup
A catheter based chronic porcine model of post-infarct dilated heart failure.
Scandinavian cardiovascular journal : SCJ 2009;43(4):260-6.
2009: Tore Christiansen; Søren K Paulsen; Jens M Bruun; Kristian Overgaard; Steffen Ringgaard; Steen Pedersen; Vincenzo Positano; Bjørn Richelsen
Comparable reduction of the visceral adipose tissue depot after a diet-induced weight loss with or without aerobic exercise in obese subjects: a 12-week randomized intervention study.
European journal of endocrinology / European Federation of Endocrine Societies 2009;160(5):759-67.
2009: Vincenzo Positano; Tore Christiansen; Maria Filomena Santarelli; Steffen Ringgaard; Luigi Landini; Amalia Gastaldelli
Accurate segmentation of subcutaneous and intermuscular adipose tissue from MR images of the thigh.
Journal of magnetic resonance imaging : JMRI 2009;29(3):677-84.
2009: Henrik Pedersen; Sebastian Kelle; Steffen Ringgaard; Bernhard Schnackenburg; Eike Nagel; Kay Nehrke; Won Yong Kim
Quantification of myocardial perfusion using free-breathing MRI and prospective slice tracking.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 2009;61(3):734-8.
2009: Lau Brix; Steffen Ringgaard; Allan Rasmusson; Thomas Sangild Sørensen; W Yong Kim
Three dimensional three component whole heart cardiovascular magnetic resonance velocity mapping: comparison of flow measurements from 3D and 2D acquisitions.
Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance 2009;11():3.
2009: Jian Guo Wen; Gui Xian Wang; Yue Chen; Steffen Ringgaard; Lars Vinter-Jensen; Troels Munch Jørgensen; Zhenzhen Li; Hans Stødkilde-Jørgensen; Søren Nielsen; Jens Christian Djurhuus; Jørgen Frøkiaer
Long-term EGF treatment partially prevents reduction of renal blood flow in response to neonatally induced partial unilateral ureteral obstruction.
Nephron. Experimental nephrology 2009;111(2):e51-9.
2009: Morten Smerup; Eva Nielsen; Peter Agger; Jesper Frandsen; Peter Vestergaard-Poulsen; Johnnie Andersen; Jens Nyengaard; Michael Pedersen; Steffen Ringgaard; Vibeke Hjortdal; Paul P Lunkenheimer; Robert Henry Anderson
The three-dimensional arrangement of the myocytes aggregated together within the mammalian ventricular myocardium.
Anatomical record (Hoboken, N.J. : 2007) 2009;292(1):1-11.
2008: Christian L Hansen; Steffen Ringgaard; Hans Stødkilde-Jørgensen; Frans van der Berg; Anders Hans Karlsson
Diffusion of NaCl in meat studied by (1)H and (23)Na magnetic resonance imaging.
Meat science 2008;80(3):851-6.
2008: Kristian Vissing; Mads Brink; Simon Lønbro; Henrik Sørensen; Kristian Overgaard; Kasper Danborg; Jesper Mortensen; Ole Elstrøm; Nikolaj Rosenhøj; Steffen Ringgaard; Jesper L Andersen; Per Aagaard
Muscle adaptations to plyometric vs. resistance training in untrained young men.
Journal of strength and conditioning research / National Strength & Conditioning Association 2008;22(6):1799-810.
2008: Marianne Bjerre; Henrik Jensen; Jane Dahl Andersen; Steffen Ringgaard; Morten Smerup; Per Wierup; J Michael Hasenkam; Sten L Nielsen
Chronic ischemic mitral regurgitation induced in pigs by catheter-based coronary artery occlusion.
The Journal of heart valve disease 2008;17(3):283-9.
2008: Henrik Jensen; Morten Ø Jensen; Steffen Ringgaard; Morten Smerup; Thomas S Sorensen; Won Y Kim; Erik Sloth; P Wierup; J Michael Hasenkam; Sten L Nielsen
Geometric determinants of chronic functional ischemic mitral regurgitation: insights from three-dimensional cardiac magnetic resonance imaging.
The Journal of heart valve disease 2008;17(1):16-22; discussion 23.
2007: Pia Ryhammer; Michael Pedersen; Steffen Ringgaard; Hanne Ravn
Regional pulmonary perfusion using model-free analysis of contrast-enhanced MRI in meconium-aspirated piglets.
Journal of magnetic resonance imaging : JMRI 2007;26(2):296-303.
2007: Jan Møller Nielsen; Steen B Kristiansen; Steffen Ringgaard; Torsten Toftegaard Nielsen; Allan Flyvbjerg; Andrew N Redington; Hans Erik Bøtker
Left ventricular volume measurement in mice by conductance catheter: evaluation and optimization of calibration.
American journal of physiology. Heart and circulatory physiology 2007;293(1):H534-40.
2007: R G Larsen; Steffen Ringgaard; Kristian Overgaard
Localization and quantification of muscle damage by magnetic resonance imaging following step exercise in young women.
Scandinavian journal of medicine & science in sports 2007;17(1):76-83.
2006: Maheshwaran K Kolandavel; Ernst-Torben Fruend; Steffen Ringgaard; Peter G Walker
The effects of time varying curvature on species transport in coronary arteries.
Annals of biomedical engineering 2006;34(12):1820-32.
2005: Morten Smerup; Jonas A Funder; Camilla Nyboe; Christian Høyer; Troels Fogh Pedersen; Lars Ribe; Steffen Ringgaard; Won Yong Kim; Erik Morre Pedersen; Niels Trolle Andersen; Sten L Nielsen; J Michael Hasenkam
Strut chordal-sparing mitral valve replacement preserves long-term left ventricular shape and function in pigs.
The Journal of thoracic and cardiovascular surgery 2005;130(6):1675-82.
2005: Steffen Ringgaard; Michael Pedersen; Jonas Rickers; Lars O Johansson; Peter Börnert; Erik Morre Pedersen
Spiral coronary angiography using a blood pool agent.
Journal of magnetic resonance imaging : JMRI 2005;22(2):213-8.
2004: Steffen Ringgaard; Sten A Oyre; Erik Morre Pedersen
Arterial MR imaging phase-contrast flow measurement: improvements with varying velocity sensitivity during cardiac cycle.
Radiology 2004;232(1):289-94.
2004: Sheng Ping Wu; Steffen Ringgaard; Erik Morre Pedersen
Three-dimensional phase contrast velocity mapping acquisition improves wall shear stress estimation in vivo.
Magnetic resonance imaging 2004;22(3):345-51.
2004: Sheng Ping Wu; Steffen Ringgaard; Sten A Oyre; Michael S Hansen; Stokholm Rasmus; Erik Morre Pedersen
Wall shear rates differ between the normal carotid, femoral, and brachial arteries: an in vivo MRI study.
Journal of magnetic resonance imaging : JMRI 2004;19(2):188-93.
2004: Niels Kristian Kristiansen; Steffen Ringgaard; Hans Nygaard; Jens Christian Djurhuus
Effect of bladder volume, gender and body position on the shape and position of the urinary bladder.
Scandinavian journal of urology and nephrology 2004;38(6):462-8.
2004: Mia N Andersen; Steffen Ringgaard; J Michael Hasenkam; Hans Nygaard
Quantitative haemodynamic evaluation of aortic cannulas.
Perfusion 2004;19(5):323-30.
2004: Niels Kristian Kristiansen; Steffen Ringgaard; Hans Nygaard; Jens Christian Djurhuus
MRI assessment of the influence of body position on the shape and position of the urinary bladder.
Scandinavian journal of urology and nephrology 2004;38(1):53-61.
2002: Jian Guo Wen; Steffen Ringgaard; Troels Munch Jørgensen; Hans Stødkilde-Jørgensen; Jens Christian Djurhuus; Jørgen Frøkiaer
Long-term effects of partial unilateral ureteral obstruction on renal hemodynamics and morphology in newborn rats: a magnetic resonance imaging study.
Urological research 2002;30(4):205-12.
2002: Jian Guo Wen; Jørgen Frøkiaer; J B Zhao; Steffen Ringgaard; Troels Munch Jørgensen; Jens Christian Djurhuus
Severe partial ureteric obstruction in newborn rats can produce renal dysplasia.
BJU international 2002;89(7):740-5.
2000: R Stokholm; Sten A Oyre; Steffen Ringgaard; H Flaagoy; William P Paaske; Erik Morre Pedersen
Determination of wall shear rate in the human carotid artery by magnetic resonance techniques.
European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery 2000;20(5):427-33.
2000: Jian Guo Wen; Y Chen; Steffen Ringgaard; Jørgen Frøkiaer; Troels Munch Jørgensen; Hans Stødkilde-Jørgensen; Jens Christian Djurhuus
Evaluation of renal function in normal and hydronephrotic kidneys in rats using gadolinium diethylenetetramine-pentaacetic acid enhanced dynamic magnetic resonance imaging.
The Journal of urology 2000;163(4):1264-70.
1999: S Dalager-Pedersen; E Falk; Steffen Ringgaard; Ingrid Bayer Kristensen; Erik Morre Pedersen
Effects of temperature and histopathologic preparation on the size and morphology of atherosclerotic carotid arteries as imaged by MRI.
Journal of magnetic resonance imaging : JMRI 1999;10(5):876-85.
1999: Erik Morre Pedersen; Sten A Oyre; M Agerbaek; Ingrid Bayer Kristensen; Steffen Ringgaard; Peter Boesiger; William P Paaske
Distribution of early atherosclerotic lesions in the human abdominal aorta correlates with wall shear stresses measured in vivo.
European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery 1999;18(4):328-33.
1999: J Michael Hasenkam; Steffen Ringgaard; Kim C Houlind; R M Botnar; Hans Stødkilde-Jørgensen; Peter Boesiger; Erik Morre Pedersen
Prosthetic heart valve evaluation by magnetic resonance imaging.
European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery 1999;16(3):300-5.
1999: Jian Guo Wen; Steffen Ringgaard; Jørgen Frøkiaer; Troels Munch Jørgensen; Hans Stødkilde-Jørgensen; Jens Christian Djurhuus
Contralateral compensatory kidney growth in rats with partial unilateral ureteral obstruction monitored by magnetic resonance imaging.
The Journal of urology 1999;162(3 Pt 2):1084-9.
1999: Erik Morre Pedersen; S Kozerke; Steffen Ringgaard; Markus Scheidegger; Peter Boesiger
Quantitative abdominal aortic flow measurements at controlled levels of ergometer exercise.
Magnetic resonance imaging 1999;17(4):489-94.
1999: Steffen Ringgaard; R M Botnar; CB Djurhuus; H Stodkilde-Jorgensen; J Michael Hasenkam; P Boesiger; E M Pedersen
High-resolution assessment of velocity fields and shear stresses distal to prosthetic heart valves using high-field magnetic resonance imaging.
The Journal of heart valve disease 1999;8(1):96-103.
1998: Sten A Oyre; William P Paaske; Steffen Ringgaard; S Kozerke; M Erlandsen; Peter Boesiger; Erik Morre Pedersen
Automatic accurate non-invasive quantitation of blood flow, cross-sectional vessel area, and wall shear stress by modelling of magnetic resonance velocity data.
European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery 1998;16(6):517-24.
1998: Sten A Oyre; Steffen Ringgaard; S Kozerke; William P Paaske; Markus Scheidegger; Peter Boesiger; Erik Morre Pedersen
Quantitation of circumferential subpixel vessel wall position and wall shear stress by multiple sectored three-dimensional paraboloid modeling of velocity encoded cine MR.
Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine 1998;40(5):645-55.
1998: Sten A Oyre; Steffen Ringgaard; S Kozerke; William P Paaske; M Erlandsen; Peter Boesiger; Erik Morre Pedersen
Accurate noninvasive quantitation of blood flow, cross-sectional lumen vessel area and wall shear stress by three-dimensional paraboloid modeling of magnetic resonance imaging velocity data.
Journal of the American College of Cardiology 1998;32(1):128-34.
1997: Steffen Ringgaard; T Madsen; E M Pedersen; Hans Stødkilde-Jørgensen; Hans Nygaard; J Michael Hasenkam
Quantitative evaluation of flow patterns in perfusion cannulae by a new magnetic resonance imaging method.
Perfusion 1997;12(6):411-6.
1997: Steffen Ringgaard; T Christiansen; M Bak; Erik Morre Pedersen; Hans Stødkilde-Jørgensen; Allan Flyvbjerg
Measurement of renal vein blood flow in rats by high-field magnetic resonance.
Kidney international 1997;52(5):1359-63.
1997: Sten A Oyre; Erik Morre Pedersen; Steffen Ringgaard; Peter Boesiger; William P Paaske
In vivo wall shear stress measured by magnetic resonance velocity mapping in the normal human abdominal aorta.
European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery 1997;13(3):263-71.
1995: PG Walker; Erik Morre Pedersen; Sten A Oyre; L Flepp; Steffen Ringgaard; R S Heinrich; Stephen Patrick Walton; J Michael Hasenkam; H S Jorgensen; Ajit P Yoganathan
Magnetic resonance velocity imaging: a new method for prosthetic heart valve study.
The Journal of heart valve disease 1995;4(3):296-307.