Detection of tissue abnormality through blood perfusion differen

Details Detection of tissue abnormality through blood perfusion differen Detection of tissue abnormality through blood perfusion differen

1991-05-13

1993-08-10

Cohen, Lee S.

Surgery

Truss

Pad

12866002, 12866003, 128 24AA, A61B 806, A61B 808

Patent

active

052339947

ABSTRACT:
A method for accentuating the differences in blood perfusion between normal and tumorous tissue is provided which comprises the steps of measuring the blood perfusion in a local area of the body, heating the local area, then measuring the blood perfusion for variations or inhomogenieties in blood perfusion after the local area has been subjected to heating. As a result of heating normal tissue will generally exhibit increased blood perfusion compared with its preheated condition and as compared with blood perfusion in tumorous tissue, rendering the tumorous tissue more susceptible to detection by techniques such as ultrasonic Doppler blood flow measurement. Apparatus for performing the inventive method is described, including an ultrasonic scanhead which includes a high intensity transducer for heating tissue to be scanned, and an array transducer for performing Doppler measurements of the tissue before and after it has been heated.

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