특징
-Conventional laser tissue blood flowmeter
-Many kinds of probes are available.
-Specialized probes can be ordered

성능
The tissue under study is irradiated by the laser light through the opticalfiber probe, and the light is scattered many times in the tissue.
Some of the photons are scattered by erythrocytes in the tissue, and light does shift in frequency related to the moving velocity of the erythrocytes. Also ,
the amplitude of the scattered light is propotional to the volume of the e rythrocytes in the tissue.
The blood flow signals are obtained from the frequency shift and its amplitude.