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Echocardiographic Assessment Of Heart Valve Regurgitant Flow Using The Flow Convergence Method

has been suggested that regurgitant flow rate can be determined from the flow convergence region by assuming it to be an isovelocity hemisphere with the aliasing velocity obtained from color Doppler flow mapping defining the radius. The computer simulation and model experiments in this study show that the velocity profile is not hemispherical and that the shape depends on the distance from the orifice. To calculate regurgitant flow in this way, corrections for the actual flow have to be performed.