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Accession Number:
ADP002083
Title:
In Vivo Temperature Measurements during Whole-Body Exposure of Macaca mulatta to Resonant and Nonresonant Frequencies,
Corporate Author:
SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TX
Report Date:
1981-10-01
Abstract:
Anesthetized rhesus monkeys, implanted with Vitek temperature probes in the wrist, ankle, thigh and biceps and fitted with a rectal probe, were exposed ventrally to planewave 219 MHz RFR E polarization at controlled environmental temperature. The variety of exposure parameters and anatomical sites, explored in many combinations, failed to reveal the existence of tissue hot spots, localized regions of greatly-elevated temperature. Exposure to a frequency near whole-body resonance 219 MHz produced a significant rise in body temperature at relatively low incident power levels when compared to comparable exposures to a frequency well above resonance 2.06 GHz explored in an earlier study. Whole-body SAR, however, was at a level where temperature increase would be anticipated. Lower set-point temperatures in the limbs, as well as increases in peripheral blood flow that are unaccounted for by models, probably act to negate the predicted effects of unequal energy absorption on local tissue temperature.
Supplementary Note:
This article is from 'Proceedings of Microwaves and Thermoregulation Held at New Haven Connecticut on 26-27 October 1981,' p95-107.
Pages:
0013
File Size:
0.00MB
