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.
|