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OLS Field Name OLS Field Data
Main Title Comparison of Finite-Difference Time-Domain SAR Calculations with Measurements in a Heterogeneous Model of Man.
Author Spiegel, R. J. ; Fatmi, M. B. A. ; Stuchly, S. S. ; Stuchly., M. A. ;
CORP Author Health Effects Research Lab., Research Triangle Park, NC. ;Northrop Services, Inc., Research Triangle Park, NC. ;Ottawa Univ. (Ontario). Dept. of Electrical Engineering. ;Health and Welfare Canada, Ottawa (Ontario).
Publisher c1989
Year Published 1989
Report Number EPA/600/J-89/443;
Stock Number PB91-109355
Additional Subjects Absorption ; Computerized simulation ; Cells(Biology) ; Humans ; Comparison ; Finite difference theory ; Tissues(Biology) ; Heterogeneity ; Dosimetry ; Expansions(Mathematics) ; Time dependence ; Reprints ;
Holdings
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Status
NTIS  PB91-109355 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/04/1991
Collation 10p
Abstract
A finite-difference time-domain technique was used to calculate the specific absorption rate (SAR) at various sites in a heterogeneous block model of man. The block model represented a close approximation to a full-scale heterogeneous phantom model. Both models were comprised of a skeleton, brain, lungs, and muscle. Measurements were conducted in the phantom model using an implantable electric-field probe and a computer-controlled data acquisition system. The calculation and measurement of SAR distributions were compared primarily in the head (including the neck) and chest. To obtain the necessary spatial resolution with the computer model, the head and neck were modeled with approximately 105,000 cells, while 86,000 cells were used to configure the chest. Plane-wave fields, polarized in the E-orientation, were utilized to irradiate the models at exposure frequencies of 350 and 915 MHz. Reasonable correlation existed between the calculations and measurements. (Copyright (c) 1989 IEEE.)