Computational simulations of mitral regurgitation quantification using the flow convergence method: Comparison of hemispheric and hemielliptic formulae

1996 ◽  
Vol 24 (5) ◽  
pp. 561-572 ◽  
Author(s):  
Joanne Hopmeyer ◽  
Erika Whitney ◽  
Dana A. Papp ◽  
Manisha S. Navathe ◽  
Robert A. Levine ◽  
...  
Keyword(s):  
Mitral Regurgitation ◽  
Method Comparison ◽  
Computational Simulations ◽  
Convergence Method ◽  
Flow Convergence

scholarly journals Quantification of Mitral Regurgitation by the Proximal Flow Convergence Method-Comparison of Transthoracic and Transesophageal Echocardiography

2002 ◽  
Vol 25 (11) ◽  
pp. 517-524 ◽  
Author(s):  
Georg Grossmann ◽  
Jochen Wöhrle ◽  
Matthias Kochs ◽  
Martin Giesler ◽  
Vinzenz Hombach ◽  
...  
Keyword(s):  
Mitral Regurgitation ◽  
Transesophageal Echocardiography ◽  
Method Comparison ◽  
Convergence Method ◽  
Flow Convergence

Pulsatile Flow Computational Simulations of Mitral Regurgitation

1998 ◽  
Vol 120 (2) ◽  
pp. 245-254 ◽  
Author(s):  
J. Hopmeyer ◽  
P. W. Wilkerson ◽  
K. M. Thorvig ◽  
R. A. Levine ◽  
A. P. Yoganathan
Keyword(s):  
Mitral Regurgitation ◽  
Flow Rate ◽  
Pulsatile Flow ◽  
Three Dimensional ◽  
Computational Simulations ◽  
Clear Zone ◽  
Regurgitant Flow ◽  
Convergence Method ◽  
Flow Convergence ◽  
Complicating Factors

The noninvasive quantification of mitral regurgitation remains an important clinical goal. Recently, the flow convergence method was developed to estimate the regurgitant flow rate. This study used three-dimensional pulsatile flow computational simulations to evaluate the accuracy of the flow convergence method in the presence of complicating factors such as ventricular confinement, noncircular orifice shape, and the presence of aortic outflow. Results showed that in the absence of aortic outflow and ventricular confinement, there was a plateau zone where the calculated flow rate by the hemispheric formula approximated the true flow rate, independent of the orifice shape. In the presence of aortic outflow and in chambers of physiologic dimensions, there was no longer a clear zone where the hemispheric formula was valid. The hemi-elliptic modiflcation of the flow convergence method worked in all cases, independent of the degree of ventricular confinement or the presence of aortic outflow. Therefore, application of the hemi-elliptic formula should be considered in future clinical studies.

scholarly journals IMPACT OF THE ETIOLOGY OF MITRAL REGURGITATION ON CALCULATION OF REGURGITANT VOLUME USING THE PROXIMAL FLOW CONVERGENCE METHOD

2013 ◽  
Vol 61 (10) ◽  
pp. E882
Author(s):  
Byung Joo Sun ◽  
Jeong Yoon Jang ◽  
Seungmo Kang ◽  
Yun-Sil Choi ◽  
Min Kyoung Jang ◽  
...  
Keyword(s):  
Mitral Regurgitation ◽  
Regurgitant Volume ◽  
Convergence Method ◽  
Flow Convergence
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