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Radiation Protection Dosimetry Advance Access originally published online on January 8, 2008
Radiation Protection Dosimetry 2008 130(2):186-205; doi:10.1093/rpd/ncm487
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© The Author 2008. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Dosimetry calculations for internal electron sources using a Korean reference adult stylised phantom

S. Park1, J. K. Lee1, C. Lee2 and C. Lee3,*

1 Department of Nuclear Engineering, Hanyang University, 17 Haengdang, Seongdong, Seoul, South Korea
2 MD Anderson Cancer Center Orlando, Orlando, FL, USA
3 Department of Nuclear and Radiological Engineering, University of Florida, FL, USA

* Corresponding author: choonsiklee{at}gmail.com

Received May 30, 2007, amended November 2, 2007, accepted November 8, 2007

Absorbed fractions (AFs) and specific absorbed fractions (SAFs) for internally deposited electron were calculated using a Korean reference adult stylised phantom, where a total of 15 internal organ volumes and external body dimension were designed to match average Korean adult male. The walls of oesophagus, stomach, colon and urinary bladder were additionally divided into the mucosal layer and residual wall to accommodate dose calculation for weakly penetrating electron. The mucosal wall thicknesses were determined by the data reported in the International Commission on Radiological Protection Publication 89 and other literature resources and by direct measurements. The Monte Carlo transport code MCNPX (version 2.5.0) was employed to calculate the electron energy deposited. The SAFs and AFs for monoenergetic electrons with the energies ranging from 10 keV to 2 MeV were calculated. The results were compared with those of the revised Oak Ridge National Laboratory phantoms and showed considerable differences up to 150% in SAFs, whereas no substantial differences were observed in the AFs.


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