Results 171 to 180 of about 8,314,246 (206)

Gender differences in primary mitral regurgitant volumes at specific regurgitant fractions as assessed by magnetic resonance imaging

International Journal of Cardiovascular Imaging, 2021
Guidelines suggest using a regurgitant fraction of 50% and regurgitant volume of 60 ml for determination of severe mitral insufficiency. Recent MRI data has suggested that a regurgitant fraction of 40% defines severe primary mitral insufficiency. We sought to determine whether there were gender differences in primary mitral regurgitant volumes for ...
Chad House, William B Nelson
exaly   +3 more sources

Color doppler echocardiographic assessment of the change in the mitral regurgitant volume

American Heart Journal, 1987
We studied the possibility that a mitral regurgitant Doppler signal area on a two-dimensional color Doppler echocardiogram can reflect changes in mitral regurgitant volume in 24 patients with several types of mitral regurgitation. In 20 patients, mitral regurgitant Doppler signal areas were clear enough to measure.
Akira Kisanuki, A Kisanuki, C Tei
exaly   +4 more sources

Calculation of Regurgitant Volume Using Echocardiographic Volumetric Method for Accurate Diagnosis of Severe Mitral Regurgitation

Journal of the American Society of Echocardiography
Recent studies have shown suboptimal results of the proximal isovelocity surface area (PISA) method and the American Society of Echocardiography (ASE) algorithm for diagnosing severe primary mitral regurgitation (MR). The aim of this study was to evaluate the accuracy of regurgitant volume (RegVol) calculated using volumetric transthoracic ...
Jae Kwan Song
exaly   +3 more sources

Value of the proximal flow convergence method for quantification of the regurgitant volume in mitral regurgitation

Clinical Research in Cardiology, 2004
The purpose of this study was to evaluate whether the underlying mechanism of mitral regurgitation influences the reliability of the proximal flow con- vergence method to assess the regurgitant volume. Furthermore, the mode of imaging the flow convergence region and different correction algorithms for calculation of the regurgitant volume were compared.
Nikolaus Marx, M Kochs, G Grossmann
exaly   +3 more sources

Extracellular Volume in Primary Mitral Regurgitation

JACC: Cardiovascular Imaging, 2021
This study used cardiovascular magnetic resonance (CMR) to evaluate whether elevated extracellular volume (ECV) was associated with mitral valve prolapse (MVP) or if elevated ECV was a consequence of remodeling independent of primary mitral regurgitation (MR) etiology.Replacement fibrosis in primary MR is more prevalent in MVP; however, data on ECV as ...
Danai, Kitkungvan, Eric Y, Yang, Kinan C, El Tallawi, Sherif F, Nagueh, Faisal, Nabi, Mohammad A, Khan, Duc T, Nguyen, Edward A, Graviss, Gerald M, Lawrie, William A, Zoghbi, Robert O, Bonow, Miguel A, Quinones, Dipan J, Shah   +12 more
openaire   +2 more sources

Quantification of Eccentric Mitral Regurgitation by Regurgitant Volume

2007 IEEE/ICME International Conference on Complex Medical Engineering, 2007
To investigate and verify that real-time 3-dimensional (RT-3D) color Doppler is capable of quantifying the eccentric miral regurgitation (MR) by computing regurgitant volume (RV). 34 patients (mean age 37.13 plusmn 18.28 years) with confirmed eccentric MR were undergone RT-3D echocardiography.
Wang Tianfu, Wen Xiaohui, null Li Deyu, Rao Li, Tang Hong, Lin Jiangli   +5 more
openaire   +1 more source

Diagnostic value of mitral regurgitant jet volume in the assessment of mitral regurgitation severity by general imaging three-dimensional quantification

The International Journal of Cardiovascular Imaging, 2020
Accurate quantification of mitral regurgitation (MR) severity is critical for appropriate clinical decision making regarding surgical intervention. General imaging three-dimensional quantification (GI3DQ) method allows for direct measurement of mitral regurgitant jet volume (MRJvol) with the help of three-dimensional (3D) color flow Doppler imaging ...
Wugang Wang, Yong Jiang, Junfang Li, Kun Gong, Liang Zhao, Guozhang Tang, Yuanyuan Meng, Zhibin Wang   +7 more
openaire   +2 more sources

Mitral or aortic regurgitation: quantification of regurgitant volumes with cine MR imaging.

Radiology, 1988
A new, rapid magnetic resonance (MR) imaging method, cine MR imaging, was used to determine the regurgitant fraction (RF) in patients with left-sided regurgitant lesions. Right and left ventricular stroke volumes were determined with cine MR imaging and a modified Simpson formula in ten healthy volunteers and 23 patients known to have either ...
U, Sechtem, P W, Pflugfelder, M M, Cassidy, R D, White, M D, Cheitlin, N B, Schiller, C B, Higgins   +6 more
openaire   +2 more sources

Volume overload hypertrophy in a closed-chest model of mitral regurgitation

American Journal of Physiology-Heart and Circulatory Physiology, 1988
Chronic volume overload hypertrophy as seen in mitral regurgitation in humans eventually may cause left ventricular dysfunction. Longitudinal study of the mechanisms leading to such dysfunction is difficult in humans and more easily performed in an animal model.
J P, Kleaveland, W G, Kussmaul, T, Vinciguerra, R, Diters, B A, Carabello   +4 more
openaire   +2 more sources

Left ventricular volumes by echocardiography in chronic aortic and mitral regurgitations

Scandinavian Cardiovascular Journal, 2016
Objectives Cut-off values for left ventricular (LV) dimensions indicating severe valve regurgitation have not been defined. The aim of this study was to establish echocardiographic cut-off values for LV dimensions indicating severe chronic aortic (AR) or mitral (MR) regurgitation.
Odd, Bech-Hanssen, Christian Lars, Polte, Kerstin M, Lagerstrand, Åse A, Johnsson, Bahaa M, Fadel, Sinsia A, Gao   +5 more
openaire   +2 more sources