APPARATUS AND METHOD FOR HIGH RESOLUTION TEMPERATURE MEASUREMENT AND FOR HYPERTHERMIA THERAPY

摘要

An apparatus and method for increasing the resolution of a linear array fiber Bragg gratings by applying a plastic coating haying a high CTE over the optical fiber. Apparatus and method for determining the temperature of each o succession of points along a tissue portion during hyperthermia treatment incl an optical fiber with a succession of closely spaced fiber Bragg gratings. Each grating is responsive to a different wavelength and is sensitive to ambient temperature to change that wavelength as a function sf temperature. A tunabl laser operative continuously over a range of wavelengths including those to w the gratings respond is used to interrogate the gratingb. Sensitivity-enhancing coatings are used on the fibers and the lasers are tuned over very short time cycles.