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US 4,228,805 AGranted
Method of measuring blood perfusion
AssigneeRCA Corporation
InventorsArye Rosen, William P. Santamore
Life of this patent
Estimating the term…
Abstract
A method of measuring fluid perfusion of tissue by irradiating the tissue with microwave energy of a predetermined rate, amplitude and frequency to uniformly heat a given volume of said tissue, interrupting the irradiation and measuring the rate of temperature decay of said given volume of tissue as a measure of fluid perfusion of the given volume of tissue.
Claims4
A method of determining the fluid perfusion of tissue comprising the steps of:
- irradiating said tissue with microwave frequency signals to elevate a given volume of said tissue uniformly to a predetermined temperature, said signals having a predetermined rate, amplitude and frequency to uniformly heat said given volume;
- interrupting said irradiating signals;
- and
- measuring the rate of temperature decay of said volume of tissue from said predetermined temperature, said rate of temperature decay being indicative of the thermal conductivity of said volume of tissue and thus the fluid perfusion of said volume of tissue.
1 more element
Dependencies are inferred from the claim text.