Remote estimation of blood pulse pressure via temporal tracking of reflected secondary speckles pattern

Abstract

We present a novel technique for remote noncontact blood pulse pressure measurement. It is based on tracking both temporal and amplitude changes of reflected secondary speckle produced in human skin when illuminated by a laser beam. The implemented technique extracts the difference between the systolic and the diastolic blood pressure. Experimental results are presented showing good agreement when compared with conventional measurement methods. © 2010 Society of Photo-Optical Instrumentation Engineers.