Mitral effective regurgitant orifice area (EROA) using the flow convergence (FC) method is
used to quantify the severity of mitral regurgitation (MR). However, it is challenging and …

OBJECTIVE: Traditionally, a hemispheric assumption for the proximal flow convergence
region (PFCR) is used when calculating mitral regurgitant (MR) effective orifice area …

Geometry of the proximal isovelocity surface area (PISA) in functional mitral regurgitation
(MR) is elongated, leading to underestimation of the effective regurgitant orifice (ERO) area …

Mitral valve regurgitation (MR) is among the most prevalent and most significant valve
problems in the Western world. 1 Yet the accurate quantification of MR remains a significant …

Background Assessment of mitral regurgitation (MR) severity by echocardiography is
important for clinical decision making, but MR severity can be challenging to quantitate …

Background Proximal flow convergence is a promising method to quantify mitral
regurgitation but may overestimate flow when the flow field is constrained. This has not been …

Background Discrepancies have been observed between transthoracic echocardiography
(TTE) and cardiac magnetic resonance imaging (CMR) severity grading in primary mitral …

Objectives: This study sought to determine the effect of dynamic variations of mitral
regurgitant flow rate (MRFR) and effective regurgitant orifice area (EROA) on mitral …

Background Quantitation of regurgitation severity using the proximal isovelocity acceleration
(PISA) method to calculate effective regurgitant orifice (ERO) area has limitations …

The aim of our study was to evaluate 3-dimensional (3D) color Doppler proximal isovelocity
surface area (PISA) as a tool for quantitative assessment of mitral regurgitation (MR) against …