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Abstract

Microwave tumor detection apparatus includes a probe having a working end arranged to contact tissue. Positioned in the probe is at least one rectangular waveguide each waveguide having an aperture at the working end of the probe. The waveguides constitute antennas tuned to receive microwave radiation emitted by the tissue opposite the working end of the probe. Each waveguide is coupled electrically and mechanically to a dedicated radiometer in the probe for detecting the temperature of tissue opposite that waveguide. These radiometers have thermally conductive casings which are mounted to a common heat sink and are insulated so that all of the radiometers have a uniform thermal distribution. Also, a thin thermally insulating interface pad may be located between the working end of the probe and the tissue contacted by the probe to prevent such contact from causing changes in the surface temperature of the tissue. A method of detecting breast tumors is also disclosed.

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First Claim