Title :
Measurement of valvular regurgitant volume by gain-corrected Doppler in a pulsatile flow model
Author :
Cannon, Scott R. ; Richards, Kent L. ; Lujan, Michael
Abstract :
A pulsatile flow model was utilized to emulate hemodynamic conditions downstream from a regurgitant orifice. Doppler signals from a sample volume placed across the regurgitant orifice were acquired at a variety of Doppler gains, orifice areas, regurgitant volumes, and flow velocities. Doppler-predicted regurgitant volumes correlated well with measured volumes (R=0.88, SD=3.7, mean error 5.0 cc).<>
Keywords :
Doppler effect; biomedical ultrasonics; haemodynamics; pulsatile flow; volume measurement; flow velocity; gain-corrected Doppler; haemodynamic conditions emulation; orifice area; pulsatile flow model; regurgitant orifice; valvular regurgitant volume measurement;
Conference_Titel :
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1988.94492
