Publications by authors named "Sigmund Frigstad"

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An automated bladder volume measurement algorithm by pixel classification using random forests.
Pavan Annangi, Sigmund Frigstad, S B Subin, Anders Torp, Sundararajan Ramasubramaniam

Annu Int Conf IEEE Eng Med Biol Soc· August 2016

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Automated interventricular septum thickness measurement from B-mode echocardiograms.
Navneeth Subramanian, Dirk Padfield, Sheshadri Thiruvenkadam, Anand Narasimhamurthy, Sigmund Frigstad

Med Image Comput Comput Assist Interv· November 2010

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Real-time simultaneous triplane contrast echocardiography gives rapid, accurate, and reproducible assessment of left ventricular volumes and ejection fraction: a comparison with magnetic resonance imaging.
Siri Malm, Sigmund Frigstad, Einar Sagberg, Per Arvid Steen, Terje Skjarpe

J Am Soc Echocardiogr· December 2006

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Quantitative adenosine real-time myocardial contrast echocardiography for detection of angiographically significant coronary artery disease.
Siri Malm, Sigmund Frigstad, Hans Torp, Rune Wiseth, Terje Skjarpe

J Am Soc Echocardiogr· April 2006

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Automatic timing of aortic valve closure in apical tissue Doppler images.
Svein Arne Aase, Asbjørn Stoylen, Charlotte Bjork Ingul, Sigmund Frigstad, Hans Torp

Ultrasound Med Biol· January 2006

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Effects of ultrasound contrast during tissue velocity imaging on regional left ventricular velocity, strain, and strain rate measurements.
Siri Malm, Sigmund Frigstad, Asbjorn Stoylen, Hans Torp, Einar Sagberg

J Am Soc Echocardiogr· January 2006

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Quantification of resting myocardial blood flow velocity in normal humans using real-time contrast echocardiography. A feasibility study.
Siri Malm, Sigmund Frigstad, Frode Helland, Kjetil Oye, Stig Slordahl

Cardiovasc Ultrasound· June 2005

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Accurate and reproducible measurement of left ventricular volume and ejection fraction by contrast echocardiography: a comparison with magnetic resonance imaging.
Siri Malm, Sigmund Frigstad, Einar Sagberg, Henrik Larsson, Terje Skjaerpe

J Am Coll Cardiol· September 2004

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Determinants of myocardial hypoperfusion analyzed for the interventricular septum using power Doppler harmonic imaging with contrast echocardiography in humans: a methodologic approach for clinical practice.
Andreas Hagendorff, Alexander Göckritz, Andre Wunderlich, Sigmund Frigstad, Dietrich Pfeiffer

J Am Soc Echocardiogr· May 2002

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Improved contrast to tissue ratio at higher harmonics.
Ayache Bouakaz, Sigmund Frigstad, Folkert J Ten Cate, Nico de Jong

Ultrasonics· May 2002

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Super harmonic imaging: a new imaging technique for improved contrast detection.
Ayache Bouakaz, Sigmund Frigstad, Folkert J Ten Cate, Nico de Jong

Ultrasound Med Biol· January 2002

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