Accession Number : ADA186581

Title :   Improvements in Techniques of Microwave Thermography.

Descriptive Note : Annual summary rept. 15 Nov 82-15 Nov 83,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE RESEARCH LAB OF ELECTRONICS

Personal Author(s) : Barrett, Alan H

PDF Url : ADA186581

Report Date : 06 Jun 1985

Pagination or Media Count : 12

Abstract : During the period 15 November 1982 to 15 November 1983 our research has been concentrated in two areas: (1) the design, construction, and testing of a reflection-compensating radiometer, and (2) a theoretical investigation of the variation of microwave penetration depth in human tissue as a function of the aperture size of the contact antenna. The radiometer operates at 1.4 GHz in the unbalanced mode and gives the reflection coefficient and the microwave temperature of the emitter corrected for reflections. The penetration depth of microwaves in body tissues depends critically on the aperture size and is significantly less than the penetration depth computed from the usual plane wave (or far field) approximation. Keywords: Microwave thermography.

Descriptors :   *MICROWAVES, *RADIOMETERS, *THERMOGRAPHY, ANTENNAS, APERTURES, COEFFICIENTS, DEPTH, FAR FIELD, HUMAN BODY, PENETRATION, PLANE WAVES, REFLECTION, SIZES(DIMENSIONS), TEMPERATURE, THEORY, TISSUES(BIOLOGY), EMISSION

Subject Categories : Medicine and Medical Research
      Medical Facilities, Equipment and Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE