The Proceedings of Mechanical Engineering Congress, Japan
Online ISSN : 2424-2667
ISSN-L : 2424-2667
2021
Session ID : J021-10
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Study on Development of Real-time Blood Flow Measurement System Using Multi-point Simultaneous Laser Doppler Velocimeter
*Ryo TeramotoTomoki Tajiri
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Abstract

In our laboratory, we have been measuring blood flow using Laser Doppler Velocimetry (LDV), which is a completely non-invasive measurement method using coherent laser light that has high spatial and temporal resolution and can measure even small areas. In LDV imaging, it is possible to visualize the measurement results by setting the sampling rate and velocity, but the processing time was not sufficient. Therefore, we conducted an experiment to see if we could accurately display the flow velocity as a waveform. We also observed the changes when we changed the configuration of the LDV and the solution used. We were able to calculate the pulsating flow at the measurement point as a velocity value from the waveform and confirm the flow velocity in real time. We also conducted measurements using two forms of measurement, forward scattering and backward scattering, and used bovine stored blood as the solution. As a result, we found that the accuracy was better with the forward scattering type, but the setting was severe.

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© 2021 The Japan Society of Mechanical Engineers
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