多点同時計測が可能なレーザードップラー流速計を用いたリアルタイム血流計測システムの開発に関する研究

抄録

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.