The effect of finite-difference time-domain resolution and power-loss computation method on SAR values in plane-wave exposure of Zubal phantom

In this paper, the anatomically realistic body model Zubal is exposed to a plane wave. A finite-difference time-domain (FDTD) method is used to obtain field data for specific-absorption-rate (SAR) computation. It is investigated how the FDTD resolution, power-loss computation method and positioning...

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Bibliographic Details
Published inPhysics in medicine & biology Vol. 53; no. 2; pp. 445 - 452
Main Authors Uusitupa, T M, Ilvonen, S A, Laakso, I M, Nikoskinen, K I
Format Journal Article
LanguageEnglish
Published England IOP Publishing 21.01.2008
Subjects
Body Burden
Computer Simulation
Energy Transfer
Environmental Exposure
Equipment Design
Equipment Failure Analysis
Finite Element Analysis
Models, Biological
Relative Biological Effectiveness
Reproducibility of Results
Sensitivity and Specificity
Whole-Body Counting - instrumentation
Whole-Body Counting - methods
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Summary:In this paper, the anatomically realistic body model Zubal is exposed to a plane wave. A finite-difference time-domain (FDTD) method is used to obtain field data for specific-absorption-rate (SAR) computation. It is investigated how the FDTD resolution, power-loss computation method and positioning of the material voxels in the FDTD grid affect the SAR results. The results enable one to estimate the effects due to certain fundamental choices made in the SAR simulation.
ISSN:0031-9155
1361-6560
DOI:10.1088/0031-9155/53/2/011