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Evaluation of Aortic Valve Stenosis Using Cardiovascular Magnetic Resonance Comparison of an Original Semiautomated Analysis of Phase-Contrast Cardiovascular Magnetic Resonance With Doppler Echocardiography

Evaluation of Aortic Valve Stenosis Using Cardiovascular Magnetic Resonance Comparison of an... Evaluation of Aortic Valve Stenosis Using Cardiovascular Magnetic Resonance Comparison of an Original Semiautomated Analysis of Phase-Contrast Cardiovascular Magnetic Resonance With Doppler Echocardiography Carine Defrance, MD; Emilie Bollache, MS; Nadjia Kachenoura, PhD; Ludivine Perdrix, MD; Nataliya Hrynchyshyn, MD; Eric Bruguière, MD; Alban Redheuil, MD, PhD; Benoit Diebold, MD, PhD; Elie Mousseaux, MD, PhD Background—Accurate quantification of aortic valve stenosis (AVS) is needed for relevant management decisions. However, transthoracic Doppler echocardiography (TTE) remains inconclusive in a significant number of patients. Previous studies demonstrated the usefulness of phase-contrast cardiovascular magnetic resonance (PC-CMR) in noninvasive AVS evaluation. We hypothesized that semiautomated analysis of aortic hemodynamics from PC-CMR might provide reproducible and accurate evaluation of aortic valve area (AVA), aortic velocities, and gradients in agreement with TTE. 2 2 Methods and Results—We studied 53 AVS patients (AVA =0.87±0.44 cm ) and 21 controls (AVA =2.96±0.59 cm ) TTE TTE who had TTE and PC-CMR of aortic valve and left ventricular outflow tract on the same day. PC-CMR data analysis included left ventricular outflow tract and aortic valve segmentation, and extraction of velocities, gradients, and flow rates. Three AVA measures were performed: AVA based on Hakki formula, AVA based on continuity equation, CMR1 CMR2 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Circulation: Cardiovascular Imaging Wolters Kluwer Health

Evaluation of Aortic Valve Stenosis Using Cardiovascular Magnetic Resonance Comparison of an Original Semiautomated Analysis of Phase-Contrast Cardiovascular Magnetic Resonance With Doppler Echocardiography

Circulation: Cardiovascular Imaging , Volume 5 (5) – Sep 1, 2012

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Copyright
© 2012 American Heart Association, Inc.
ISSN
1941-9651
eISSN
1942-0080
DOI
10.1161/CIRCIMAGING.111.971218
pmid
22798520
Publisher site
See Article on Publisher Site

Abstract

Evaluation of Aortic Valve Stenosis Using Cardiovascular Magnetic Resonance Comparison of an Original Semiautomated Analysis of Phase-Contrast Cardiovascular Magnetic Resonance With Doppler Echocardiography Carine Defrance, MD; Emilie Bollache, MS; Nadjia Kachenoura, PhD; Ludivine Perdrix, MD; Nataliya Hrynchyshyn, MD; Eric Bruguière, MD; Alban Redheuil, MD, PhD; Benoit Diebold, MD, PhD; Elie Mousseaux, MD, PhD Background—Accurate quantification of aortic valve stenosis (AVS) is needed for relevant management decisions. However, transthoracic Doppler echocardiography (TTE) remains inconclusive in a significant number of patients. Previous studies demonstrated the usefulness of phase-contrast cardiovascular magnetic resonance (PC-CMR) in noninvasive AVS evaluation. We hypothesized that semiautomated analysis of aortic hemodynamics from PC-CMR might provide reproducible and accurate evaluation of aortic valve area (AVA), aortic velocities, and gradients in agreement with TTE. 2 2 Methods and Results—We studied 53 AVS patients (AVA =0.87±0.44 cm ) and 21 controls (AVA =2.96±0.59 cm ) TTE TTE who had TTE and PC-CMR of aortic valve and left ventricular outflow tract on the same day. PC-CMR data analysis included left ventricular outflow tract and aortic valve segmentation, and extraction of velocities, gradients, and flow rates. Three AVA measures were performed: AVA based on Hakki formula, AVA based on continuity equation, CMR1 CMR2

Journal

Circulation: Cardiovascular ImagingWolters Kluwer Health

Published: Sep 1, 2012

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