Author(s)

A. Bensalah & P. Flaud

Abstract

Ultrasonic indirect arterial wall shear rate measurement: comparison between a centre- line velocity method and curve fitting of velocity profiles. Effects of the convolution A. Bensalah" & P. Flaud& "Laboratoire d'Informatique et de Mathematiques Morocco ** Laboratoire de Biorheologie et d'Hydrodynamique Physico-chimique, Universite Paris VII, 2, Place Jussieu, 75005 Paris, France Numerous recent works have demonstrated the role of the arterial wall shear rate in the production of chemicals by endothelial cells Nevertheless in-vivo and noninvasive instantaneous wall shear rate measurement of this factor requires very precise velocity profiles knowledge . Such an accuracy is not generally possible to obtain , due to the finite volume sample measurement and the associated convolution effects . On the other hand the velocity data can be obtained with a good accuracy in the core of the vessel where the convolution effects are minimised . The indirec

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