Objectives. This study was designed lo examine the accuracy of proximal accelerating flow
calculations in estimating regurgitant flow rate or volume in patients with different types of …

BACKGROUND The ability of transesophageal color Doppler echocardiography to provide
high-resolution images of both cardiac structure and blood flow in real time is advantageous …

Objective To compare the proximal convergence method for quantification of mitral
regurgitation with findings on concomitant left ventriculography. Material and Methods In 41 …

Doppler color flow imaging is a rapid, noninvasive method to estimate the severity of mitral
regurgitation (MR) in adult patients; theoretically, it should be possible to use the technique …

There is not yet a completely satisfactory Doppler method for determining the severity of
valvular regurgitation. Recently, interest has focused on the so‐called “flow convergence …

Doppler color flow mapping of a proximal isovelocity surface area (PISA), calculated from a
blue‐red aliasing radius, has been shown in vitro to be accurate for estimating volume flow …

Background: Prior studies have reconstructed mitral regurgitant flow in three dimensions
displaying gray scale renditions of the jets, which were difficult to differentiate from …

OBJECTIVES.: The purpose of this study was to develop a rational and objective method for
selecting a region in the proximal flow field where the hemispheric formula for calculating …

Background Recent studies have shown that many instrument and physiological factors limit
the ability of color Doppler total jet area within the receiving chamber to predict the severity …

Valvular regurgitation results in a high velocity, turbulent flow disturbance in the receiving
cardiac chamber which is readily distinguished from normal intracardiac flow by Doppler …