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Radiation Protection Dosimetry Advance Access originally published online on March 24, 2006
Radiation Protection Dosimetry 2006 121(3):236-239; 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

The calculation of SAR from limb current in the female voxel phantom, NAOMI

P. J. Dimbylow*

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

* Corresponding author: peter.dimbylow{at}hpa-rp.org.uk

Received October 19, 2005, amended February 17, 2006, accepted February 19, 2006


  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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