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ABSORPTION OF MICROWAVE RADIATION BY THE ANESTHETIZED RAT: ELECTROMAGNETIC AND THERMAL HOTSPOTS IN BODY AND TAIL
Citation:
D'Andrea, J., R. Emmerson, J. DeWitt, AND O. Gandhi. ABSORPTION OF MICROWAVE RADIATION BY THE ANESTHETIZED RAT: ELECTROMAGNETIC AND THERMAL HOTSPOTS IN BODY AND TAIL. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-87/536.
Description:
Anatomic variability in the deposition of radio frequency electromagnetic energy in mammals as been well documented. ecent study [D'Andrea et al. 1985] reported specific absorption rat (SAR) hotspots in the brain, rectum, and tail of rat carcasses exposed to 360- and to 2,450-MHz microwave radiation. egions of intense energy absorption are generally thought to be of little consequence when predicting thermal effects of microwave irradiation because it is presumed the heat to equilibrate tissue temperature within the body. xperiments on anesthetized, male Long-Evans rats (200-260 g) irradiated for 10 or 16 min with 2,450, 700, or 360 MHz radiation at SARs of 2 W/kg, 6W/kg, or 10 W/kg indicated that postirradiation temperatures in the rectum and tail were significantly higher in rats irradiated at 360 MHz and higher in the tail at 2,450 MHz than temperatures resulting from exposure to 700 MHz. his effect was found for whole-body-averages SARs as low as 6 W/kg at 360 MHz and 10 W/g at 2,450 MHz. n contrast, brain temperatures in the anesthetized rats were not different from those measured in the rest of the body following microwave exposure.