Author(s)

G. Villermain Lecolier, P. Billaudel, E. Perrin, B. Scherpereel, J.C. Pire & Y. Laval

Abstract

Detection of periodic micro movements using a non destructive method G. Villermain Lecolier", P. Billaudel", E. Perrin", B. Scherpereel\ J.C. Pire^ & Y. Laval^ ^Laboratoire d'Applications de la Microelectronique, Universite de Reims Champagne Ardenne, B.P. 347, 51062 Reims cedex, France ^Centre Hospitallier Universitaire, 4$ Rue Cognac Jay, 51092 Reims cedex, France ABSTRACT In normal tissues Arterioles exhibit spontaneous oscillatory changes of diameter. This activity, named vasomotion is presumed to be a control factor in tissue liquidian exchanges, this paper presents a non invasive method to detect this periodic micromovements in vivo. The device is made of an eddy-current sensor joined up to a PC prototyping board. A software has been developed to provide the functioning of the system. Several off line data processes like parametric and non parametric spectral analysis have been studied. We have realised a set of measurements on a test bench to determine

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