A semiconductor laser used for direct measurement of the blood perfusion of tissue.
An instrument consisting merely of a semiconductor laser in its own housing was used to measure the blood perfusion in tissue. Use is made of the feedback of Doppler-scattered light to the photodiode in the laser housing. A recording perfusion of a finger under occlusion of blood flow in the arm is shown.
de Mul
F F
FF
University of Twente, Department of Applied Physics, Enschede, The Netherlands.
Koelink
M H
MH
Weijers
A L
AL
Greve
J
J
Aarnoudse
J G
JG
Graaff
R
R
Dassel
A C
AC
D001783:Blood Flow Velocity; D005069:Evaluation Studies as Topic; D005385:Fingers / Q000098:blood supply*; D006801:Humans; D017078:Laser-Doppler Flowmetry / Q000295:instrumentation* / Q000379:methods; D012666:Semiconductors