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https://hdl.handle.net/2440/90867
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Type: | Journal article |
Title: | Peripheral photon and neutron doses from prostate cancer external beam irradiation |
Author: | Bezak, E. Takam, R. Marcu, L. |
Citation: | Radiation Protection Dosimetry, 2015; 167(4):591-601 |
Publisher: | Oxford University Press (OUP) |
Issue Date: | 2015 |
ISSN: | 0144-8420 1742-3406 |
Statement of Responsibility: | Eva Bezak, Rundgham Takam and Loredana G. Marcu |
Abstract: | Peripheral photon and neutron doses from external beam radiotherapy (EBRT) are associated with increased risk of carcinogenesis in the out-of-field organs; thus, dose estimations of secondary radiation are imperative. Peripheral photon and neutron doses from EBRT of prostate carcinoma were measured in Rando phantom. (6)LiF:Mg,Cu,P and (7)LiF:Mg,Cu,P glass-rod thermoluminescence dosemeters (TLDs) were inserted in slices of a Rando phantom followed by exposure to 80 Gy with 18-MV photon four-field 3D-CRT technique. The TLDs were calibrated using 6- and 18-MV X-ray beam. Neutron dose equivalents measured with CR-39 etch-track detectors were used to derive readout-to-neutron dose conversion factor for (6)LiF:Mg,Cu,P TLDs. Average neutron dose equivalents per 1 Gy of isocentre dose were 3.8±0.9 mSv Gy(-1) for thyroid and 7.0±5.4 mSv Gy(-1) for colon. For photons, the average dose equivalents per 1 Gy of isocentre dose were 0.2±0.1 mSv Gy(-1) for thyroid and 8.1±9.7 mSv Gy(-1) for colon. Paired (6)LiF:Mg,Cu,P and (7)LiF:Mg,Cu,P TLDs can be used to measure photon and neutron doses simultaneously. Organs in close proximity to target received larger doses from photons than those from neutrons whereas distally located organs received higher neutron versus photon dose. |
Keywords: | Humans Prostatic Neoplasms Radiation Dosage Thermoluminescent Dosimetry Phantoms, Imaging Neutrons Photons Particle Accelerators Male Organs at Risk |
Description: | First published online: January 5, 2015 |
Rights: | © The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com |
DOI: | 10.1093/rpd/ncu362 |
Published version: | http://dx.doi.org/10.1093/rpd/ncu362 |
Appears in Collections: | Aurora harvest 2 Physics publications |
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