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Radiation Protection Dosimetry Advance Access published online on March 24, 2006
Radiation Protection Dosimetry, doi:10.1093/rpd/ncl032
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© HPA 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
Received October 19, 2005
Revised February 17, 2006
Accepted February 19, 2006

SCIENTIFIC AND TECHNICAL PAPER

THE CALCULATION OF SAR FROM LIMB CURRENT IN THE FEMALE VOXEL PHANTOM, NAOMI

P. J. Dimbylow 1 *

1 Radiation Protection Division, Health Protection Agency, Chilton, Didcot, Oxon OX11 0RQ, UK

* To whom correspondence should be addressed.
P. J. Dimbylow, E-mail: peter.dimbylow{at}hpa-rp.org.uk


  Abstract

Calculations of localised SAR in the legs and arms have been performed in a female voxel phantom, NAOMI. A finite difference method was used to solve the quasistatic potential equation from 0.1 to 80 MHz for a unit current injected into a limb. The relationship between limb current and SAR has been investigated. The values of localised SAR in the leg as a function of applied plane wave electric field are also predicted from the knowledge of limb currents calculated by the finite-difference time-domain (FDTD) method for whole-body exposure. Comparisons are made with the results of previous work for the normalised male model, NORMAN, and the implications for electromagnetic guidelines are discussed.


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