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Opt Lett. 2009 Nov 15;34(22):3556-8. doi: 10.1364/OL.34.003556.

Portable optical tissue flow oximeter based on diffuse correlation spectroscopy.

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Center for Biomedical Engineering, University of Kentucky, Lexington, Kentucky 40506, USA.


A portable diffuse correlation spectroscopy (DCS) flowmeter has been extended to measure both tissue blood flow and oxygenation (namely, DCS flow oximeter). For validation purposes, calf muscle blood oxygenation during cuff inflation and deflation was measured concurrently using the DCS flow oximeter and a commercial tissue oximeter. The oxygenation traces from the two measurements exhibited similar dynamic responses, and data were highly correlated (r(mean)>0.9, P<10(-5), n=10). The portable, inexpensive, and easy-to-use DCS flow oximeter holds promise for bedside monitoring of tissue blood flow and oxygenation in clinics.

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