Experimental observation of distributed pulse wave velocity with a noncontact portable shearing-speckle interferometer

N. Hayashi; R. Hanayama; K. Ishii

doi:10.1117/12.2672585

11 August 2023 Experimental observation of distributed pulse wave velocity with a noncontact portable shearing-speckle interferometer

N. Hayashi, R. Hanayama, K. Ishii

Author Affiliations +

Proceedings Volume 12622, Optical Methods for Inspection, Characterization, and Imaging of Biomaterials VI; 1262211 (2023) https://doi.org/10.1117/12.2672585
Event: SPIE Optical Metrology, 2023, Munich, Germany

Conference Poster

Abstract

Preventive medicine is growing in importance, with vascular stiffness being a key factor. Blood flow velocity plays a crucial role in assessing vascular health. If velocity exceeds 12 m/s, it indicates an unhealthy vascular condition. Traditional methods of measuring blood flow velocity involve contact-based systems, but there is a rising demand for non-contact alternatives. Two common non-contact methods are Doppler laser interferometry and shearing-speckle interferometry. The latter is simpler, cost-effective, and mitigates the impact of body movement. This study aimed to develop a blood flow velocity measurement device using shearing-speckle interferometry. Experimental results demonstrated successful estimation of blood flow velocity using this method, showing potential for its application in preventive medicine to monitor and diagnose vascular stiffness.

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N. Hayashi, R. Hanayama, and K. Ishii "Experimental observation of distributed pulse wave velocity with a noncontact portable shearing-speckle interferometer", Proc. SPIE 12622, Optical Methods for Inspection, Characterization, and Imaging of Biomaterials VI, 1262211 (11 August 2023); https://doi.org/10.1117/12.2672585

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