IN VIVO NON-INVASIVE MEASUREMENT OF BLOOD PARAMETERS USING LASER ENABLED SWEPT FREQUENCY ACOUSTIC INTERFEROMETRY

Abstract: state of art techniques for measurement of blood viscosity, rbc concentration and the like are in vitro methods. embodiments of the present disclosure provide a method and system for in vivo non-invasive measurement of blood parameters using laser enabled swept frequency acoustic interferometry (le-sfai) principle. a continuous wave laser diode based photo acoustic (cwpa) signal in frequency domain generated from laser excitation incident on a biological tissue of a subject carrying blood vessel is acquired by the ultrasound sensor and converted to a windowed time domain cwpa signal limited to two peaks. the signal characteristics such as risetime, amplitude, and time difference between first peak and the second peak are obtained to derive blood viscosity, red blood corpuscles (rbc) concentration, and blood vessel diameter.

Inventor(s): ABHIJEET GOREY, TAPAS CHAKRAVARTY, ANWESHA KHASNOBISH

CPC Classification: A61B5/0095 ({by applying light and detecting acoustic waves, i.e. photoacoustic measurements})

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