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

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7 Author(s)
de Mul, F.F.M. ; Dept. of Appl. Phys., Twente Univ., Enschede, Netherlands ; Koelink, M.H. ; Weijers, A.L. ; Greve, J.
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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.

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Biomedical Engineering, IEEE Transactions on  (Volume:40 ,  Issue: 2 )