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Med Eng Phys. 1994 Mar;16(2):105-11.

Measuring the steady-state value and the dynamics of the skin blood flow using the non-contact laser speckle method.

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  • 1GSF-Research Centre for Environment and Health, Oberschleissheim, Germany.


The non-contact laser speckle method provides a measure of skin blood flow with a time resolution of 1 s. Information about different characteristics of the blood flow can be obtained from measurements of the steady state and from the time course during ischaemia and reactive hyperaemia. Special signal processing, a microprocessor and a computer program facilitate the analysis of the data. They consider disturbances which come from a common tissue movement and from convulsions of the limbs. Measurements prove a decreased steady-state value and prolonged half-times during ischaemia and reactive hyperaemia when patients with peripheral arterial occlusive disease are compared with healthy subjects.

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