Estimation of volume flow rate by surface integration of velocity vectors from color Doppler images

Y Sun, P Ask, B Janerot-Sjöberg, L Eidenvall… - Journal of the American …, 1995 - Elsevier
A new Doppler echocardiographically based method has been developed to quantify
volume flow rate by surface integration of velocity vectors (SIVV). Electrocardiographic-gated
color Doppler images acquired in two orthogonal planes were used to estimate volume flow
rate through a bowl-shaped surface at a given time and distance from the probe. To provide
in vitro validation, the method was tested in a hydraulic model representing a pulsatile flow
system with a restrictive orifice. Accurate estimates of stroke volume (±10%) were obtained …
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