Citation

Hirata A, Asano T, Fujiwara O. Phys. Med. Biol. 2008; 53(18): 5223-5238.

Copyright

(Copyright © 2008, IOP Publishing)

DOI

10.1088/0031-9155/53/18/025

PMID

unavailable

Abstract

The temperature elevations in anatomically based human phantoms of an adult and a 3-year-old child were calculated for radio-frequency whole-body exposure. Thermoregulation in children, however, has not yet been clarified. In the present study, we developed a computational thermal model of a child that is reasonable for simulating body-core temperature elevation. Comparison of measured and simulated temperatures revealed thermoregulation in children to be similar to that of adults. Based on this finding, we calculated the body-core temperature elevation in a 3-year-old child and an adult for plane-wave exposure at the basic restriction in the international guidelines. The body-core temperature elevation in the 3-year-old child phantom was 0.03. C at a wholebodyaveraged specific absorption rate of 0.08W kg(-1), which was 35% smaller than in the adult female. This difference is attributed to the child's higher body surface area-to-mass ratio. KW: Hyperthermia in automobiles

Language: en