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Specific absorption rate in models of man and monkey at 225 and 2,000 MHz
Author(s) -
Olsen Richard G.,
Griner Toby A.
Publication year - 1987
Publication title -
bioelectromagnetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.435
H-Index - 81
eISSN - 1521-186X
pISSN - 0197-8462
DOI - 10.1002/bem.2250080406
Subject(s) - specific absorption rate , torso , absorption (acoustics) , body surface , physics , range (aeronautics) , nuclear magnetic resonance , optics , computational physics , materials science , anatomy , biology , mathematics , computer science , telecommunications , geometry , antenna (radio) , composite material
Full‐size models of a man and a rhesus monkey were exposed to radiofrequency (RF) radiation at 225 MHz. The model of man was also exposed to 2,000 MHz. Specific absorption rates (SARs) were measured in partial‐body sections, such as the arms, legs, etc., using gradient‐layer calorimeters. Also, front‐surface thermographic images were obtained to qualitatively show the heating patterns. For all of the configurations used, the SAR in the limbs was much higher than in the torso. Agreement (whole‐body SARs) with spheroidal models was better for both models at 225 MHz than at 2,000 MHz. These results indicate that in the frequency range two orders of magnitude above whole‐body resonance, SAR in the limbs significantly contributes to the whole‐body average SAR.