Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Patent
1996-12-24
1998-07-14
Lateef, Marvin M.
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
600549, A61B 500
Patent
active
057796351
ABSTRACT:
Microwave tumor detection apparatus includes a probe having a working end arranged to contact tissue. Positioned in the probe is a plurality of rectangular waveguides arranged in columns and rows such that each waveguide has an aperture at the working end of the probe that is oriented substantially perpendicular to the aperture of the waveguide in any adjacent column and row of the array. The waveguides constitute antennas tuned to receive microwave radiation emitted by the tissue opposite the working end of the probe. The waveguides are coupled electrically and mechanically to dedicated radiometers in the probe for detecting the temperatures of tissue opposite the waveguides. 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.
REFERENCES:
patent: 4428382 (1984-01-01), Walsall et al.
patent: 4815479 (1989-03-01), Carr
Lateef Marvin M.
Mantis Mercader Eleni
Microwave Medical Systems, Inc.
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