Method and apparatus for measuring perfusion of biological tissu

Surgery – Diagnostic testing – Cardiovascular

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600479, 600437, 600438, 600300, A61B 502, A61B 800, A61B 600, A61B 500

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active

061323802

ABSTRACT:
Perfusion measurement method. The method includes detecting a signal emanating from the tissue and processing the signal to detect fluctuations substantially spatially correlated on a length scale less than 1 centimeter. The fluctuations are then analyzed to obtain a measure of perfusion. In one embodiment, the detected fluctuations are substantially correlated with fluctuations of a biological parameter such as the cardiac cycle or the respiratory cycle.

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Dymling et al, "Measurement of Blood Perfusion in Tissue Using Doppler Ultrasound", Ultrasound in Medicine and Biology, 1991, vol. 17, No. 5, pp. 433-444, 1991.
Buhrer et al. "Subtraction Procedure for the Registration of Tissue Perfusion with Doppler Ultrasound", Ultrasound in Med. & Biol. 22(5):651-658 (1996).

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