A semiconductor laser used for direct measurement of the blood perfusion of tissue.

de Mul, F F; Koelink, M H; Weijers, A L; Greve, J; Aarnoudse, J G; Graaff, R; Dassel, A C · IEEE Trans Biomed Eng · 1993

basic_science · Level V

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Abstract

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.

Medical subject headings