Results 131 to 140 of about 6,465 (169)
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Journal of the American Society of Echocardiography, 2022
Quantification of mitral regurgitation (MR) by echocardiography is integral to assessing lesion severity and entails the integration of multiple Doppler-based parameters. These methods are founded primarily upon the principle of proximal isovelocity surface area (PISA), a two-dimensional (2D) method known to involve several assumptions regarding MR jet
Alexandre This, Marcus Schreckenberg
exaly +3 more sources
Quantification of mitral regurgitation (MR) by echocardiography is integral to assessing lesion severity and entails the integration of multiple Doppler-based parameters. These methods are founded primarily upon the principle of proximal isovelocity surface area (PISA), a two-dimensional (2D) method known to involve several assumptions regarding MR jet
Alexandre This, Marcus Schreckenberg
exaly +3 more sources
Journal of Tongji Medical University, 1990
A method for quantification of regurgitant volume in mitral regurgitation (MR) was studied. 31 cases of MR were investigated with color Doppler. The reliability of measuring velocity by Doppler and the influence of pressure gradient on MR were assessed and confirmed by experimental device. The results suggested that the best method in quantification of
Wang Xin-Fang, J E Wang, Xin-Fang Wang
exaly +3 more sources
A method for quantification of regurgitant volume in mitral regurgitation (MR) was studied. 31 cases of MR were investigated with color Doppler. The reliability of measuring velocity by Doppler and the influence of pressure gradient on MR were assessed and confirmed by experimental device. The results suggested that the best method in quantification of
Wang Xin-Fang, J E Wang, Xin-Fang Wang
exaly +3 more sources
Color doppler echocardiographic assessment of the change in the mitral regurgitant volume
American Heart Journal, 1987We 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.
Yutaka Otsuji +2 more
exaly +4 more sources
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 M House, William B Nelson
exaly +3 more sources
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 M House, William B Nelson
exaly +3 more sources
European Heart Journal Cardiovascular Imaging
Abstract Aims In patients with ventricular functional mitral regurgitation (VFMR) undergoing transcatheter edge-to-edge repair (M-TEER), the prognostic significance of the ratio between mitral regurgitant volume and left atrial volume (LAV) remains unclear.
Shingo Sakata +2 more
exaly +3 more sources
Abstract Aims In patients with ventricular functional mitral regurgitation (VFMR) undergoing transcatheter edge-to-edge repair (M-TEER), the prognostic significance of the ratio between mitral regurgitant volume and left atrial volume (LAV) remains unclear.
Shingo Sakata +2 more
exaly +3 more sources
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 ...
Ga Yun Kim +13 more
exaly +3 more sources
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 ...
Ga Yun Kim +13 more
exaly +3 more sources
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.
Georg Großmann +2 more
exaly +3 more sources
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.
Georg Großmann +2 more
exaly +3 more sources
Extracellular Volume in Primary Mitral Regurgitation
JACC: Cardiovascular Imaging, 2021This 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 +12 more
openaire +2 more sources
Quantification of Eccentric Mitral Regurgitation by Regurgitant Volume
2007 IEEE/ICME International Conference on Complex Medical Engineering, 2007To 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 +5 more
openaire +1 more source
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 +7 more
openaire +2 more sources
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 +7 more
openaire +2 more sources