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DISCUSSION PAPER: STRONG DEPENDENCE OF WHOLE ANIMAL ABSORPTION ON POLARIZATION AND FREQUENCY OF RADIO‐FREQUENCY ENERGY *
Author(s) -
Gandhi O. P.
Publication year - 1975
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.1975.tb36028.x
Subject(s) - absorption (acoustics) , frequency band , radio frequency , specific absorption rate , radio spectrum , polarization (electrochemistry) , imaging phantom , optics , free space , physics , nuclear magnetic resonance , computational physics , materials science , chemistry , atomic physics , antenna (radio) , telecommunications , astronomy , computer science
A two-plate stripline is used to determine wide-band radio-frequency (285-4000 MHz) absorption characteristics of 96-390-g rats and brain-phantom prolate spheroidal bodies. The results compare well to those for free space irradiation. At resonance, for E along the long dimension (â), a power deposition nine times higher than that for the H parallel â orientation is observed. For rats in the k parallel â configuration, the frequencies of peak absorption and the maximum absorption at these values demonstrate W-1/3 and W 2/3 dependencies, respectively, upon the weight W of the animal. This finding implies that whole animal absorption is a size- and shape-dependent phenomenon.