Blood Coagulation Measurements Using Dynamic Speckle Technique?

M.M. PATIÑO-VELASCO, C. ANDRADE-ERASO, J. VÁSQUEZ-LÓPEZ; M. TRIVI, H.J. RABAL.

Paraná

Congreso; VI Latin American Congress on Biomedical Engineering CLAIB 2014; 2014

CLAIB

A series of coagulometers have been developedwith the aim of making easier the measurement of coagulationtimes. A phenomenon that emerges as an alternative for thedevelopment of these devices is the use of dynamic laser speckles.It is based on the analysis of time variations of a specklepattern produced by interference of multiple coherent waveletsscattered by the sample. We present the results of applyingcorrelation analysis to dynamic speckle produced by samplesof capillary blood clotting without using any reactive. We alsopropose a numerical model which describes the obtainedcurves and a method for measuring coagulation time from thisanalysis.