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.

Automatic solution for detection, identification and biomedical monitoring of a cow using remote sensing for optimised treatment of cattle

“…In previous works we were able to develop photonic sensor in order to measure human biomedical parameters (Zalevsky et al, 2009;Beiderman et al, 2010;Beiderman et al, 2011b;Cojoc et al, 2012;Beiderman et al, 2012;Shenhav et al, 2012;Margalit et al, 2014). Our previous measurements included heartbeat rate and shape (Zalevsky et al, 2009), blood pulse pressure (Beiderman et al, 2010), estimation for glucose concentration in the blood stream (Beiderman et al, 2011b), intra-ocular pressure (IOP) in the eye (Margalit et al, 2014), estimation of amount of alcohol in the blood stream (Shenhav et al, 2012) and even using our sensor as a tool for early detection of malaria infected red blood cells (Cojoc et al, 2012). For some of those parameters such glucose concentration and IOP the alternative is invasive or at least non pleasant procedure for the human patient.…”

Speckle pattern processing by digital image correlation

“…This method, which has found wide application in nondestructive testing of materials [9][10][11], is also a promising method of diagnostics in biology and medicine [7,[12][13][14][15]. The method of digital speckle correlation is also suitable for the remote measurement of microdisplacements and speed of various processes [15][16][17].…”

The Influence of the Radiation Source Parameters on the Accuracy of Digital Speckle Correlation Method

“…The authors [10] consider a number of advantages of this method by comparing it with other methods, in particular with the Doppler method. In their work they also consider the ways of non-contact blood pressure measurement, using digital speckle correlation.…”