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Sensitivity of radio-photoluminescence glass dosimeters to accumulated doses
BACKGROUND: This study investigated the effect of accumulated doses on radio-photoluminescence glass dosimeters (RPLGDs) from measurements involving mega-voltage photons. METHODS: Forty-five commercially available RPLGDs were irradiated to estimate their dose responses. Photon beams of 6, 10, and 15...
Autores principales: | , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7714242/ https://www.ncbi.nlm.nih.gov/pubmed/33270667 http://dx.doi.org/10.1371/journal.pone.0234829 |
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author | Kim, Dong Wook Sung, Jiwon Son, Jaeman Shin, Han-Back Kim, Min-Joo Noh, Yu-Yun Kim, Hojae Han, Min Cheol Kim, Jihun Han, Su Chul Chang, Kyung Hwan Kim, Hojin Park, Kwangwoo Yoon, Myonggeun Kim, Jinsung Shin, Dongho |
author_facet | Kim, Dong Wook Sung, Jiwon Son, Jaeman Shin, Han-Back Kim, Min-Joo Noh, Yu-Yun Kim, Hojae Han, Min Cheol Kim, Jihun Han, Su Chul Chang, Kyung Hwan Kim, Hojin Park, Kwangwoo Yoon, Myonggeun Kim, Jinsung Shin, Dongho |
author_sort | Kim, Dong Wook |
collection | PubMed |
description | BACKGROUND: This study investigated the effect of accumulated doses on radio-photoluminescence glass dosimeters (RPLGDs) from measurements involving mega-voltage photons. METHODS: Forty-five commercially available RPLGDs were irradiated to estimate their dose responses. Photon beams of 6, 10, and 15 MV were irradiated onto the RPLGDs inside a phantom, which were divided into five groups with different doses and energies. Groups 1 and 2 were irradiated at 1, 5, 10, 50, and 100 Gy in a sequential manner; Group 3 was irradiated 10 times with a dose of 10 Gy; and Groups 4 and 5 followed the same method as that of Group 3, but with doses of 50 Gy and 100 Gy, respectively. Each device was subjected to a measurement reading procedure each time irradiation. RESULTS: For the annealed Group 1, RPLGD exhibited a linearity response with variance within 5%. For the non-annealed Group 2, readings demonstrated hyperlinearity at 6 MV and 10 MV, and linearity at 15 MV. Following the 100 Gy irradiation, the readings for Group 2 were 118.7 ± 1.9%, 112.2 ± 2.7%, and 101.5 ± 2.3% at 6, 10, and 15 MV, respectively. For Groups 3, 4, and 5, the responsiveness of the RPLGDs gradually decreased as the number of repeated irradiations increased. The percentage readings for the 10th beam irradiation with respect to the readings for the primary beam irradiation were 84.6 ± 1.9%, 87.5 ± 2.4%, and 93.0 ± 3.0% at 6 MV, 10 MV, and 15 MV, respectively. CONCLUSIONS: The non-annealed RPLGD response to dose was hyperlinear for the 6 MV and 10 MV photon beams but not for the 15 MV photon beam. Additionally, the annealed RPLGD exhibited a fading phenomenon when the measurement was repeated several times and demonstrated a relatively large fading effect at low energies than at high energies. |
format | Online Article Text |
id | pubmed-7714242 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-77142422020-12-09 Sensitivity of radio-photoluminescence glass dosimeters to accumulated doses Kim, Dong Wook Sung, Jiwon Son, Jaeman Shin, Han-Back Kim, Min-Joo Noh, Yu-Yun Kim, Hojae Han, Min Cheol Kim, Jihun Han, Su Chul Chang, Kyung Hwan Kim, Hojin Park, Kwangwoo Yoon, Myonggeun Kim, Jinsung Shin, Dongho PLoS One Research Article BACKGROUND: This study investigated the effect of accumulated doses on radio-photoluminescence glass dosimeters (RPLGDs) from measurements involving mega-voltage photons. METHODS: Forty-five commercially available RPLGDs were irradiated to estimate their dose responses. Photon beams of 6, 10, and 15 MV were irradiated onto the RPLGDs inside a phantom, which were divided into five groups with different doses and energies. Groups 1 and 2 were irradiated at 1, 5, 10, 50, and 100 Gy in a sequential manner; Group 3 was irradiated 10 times with a dose of 10 Gy; and Groups 4 and 5 followed the same method as that of Group 3, but with doses of 50 Gy and 100 Gy, respectively. Each device was subjected to a measurement reading procedure each time irradiation. RESULTS: For the annealed Group 1, RPLGD exhibited a linearity response with variance within 5%. For the non-annealed Group 2, readings demonstrated hyperlinearity at 6 MV and 10 MV, and linearity at 15 MV. Following the 100 Gy irradiation, the readings for Group 2 were 118.7 ± 1.9%, 112.2 ± 2.7%, and 101.5 ± 2.3% at 6, 10, and 15 MV, respectively. For Groups 3, 4, and 5, the responsiveness of the RPLGDs gradually decreased as the number of repeated irradiations increased. The percentage readings for the 10th beam irradiation with respect to the readings for the primary beam irradiation were 84.6 ± 1.9%, 87.5 ± 2.4%, and 93.0 ± 3.0% at 6 MV, 10 MV, and 15 MV, respectively. CONCLUSIONS: The non-annealed RPLGD response to dose was hyperlinear for the 6 MV and 10 MV photon beams but not for the 15 MV photon beam. Additionally, the annealed RPLGD exhibited a fading phenomenon when the measurement was repeated several times and demonstrated a relatively large fading effect at low energies than at high energies. Public Library of Science 2020-12-03 /pmc/articles/PMC7714242/ /pubmed/33270667 http://dx.doi.org/10.1371/journal.pone.0234829 Text en © 2020 Kim et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Kim, Dong Wook Sung, Jiwon Son, Jaeman Shin, Han-Back Kim, Min-Joo Noh, Yu-Yun Kim, Hojae Han, Min Cheol Kim, Jihun Han, Su Chul Chang, Kyung Hwan Kim, Hojin Park, Kwangwoo Yoon, Myonggeun Kim, Jinsung Shin, Dongho Sensitivity of radio-photoluminescence glass dosimeters to accumulated doses |
title | Sensitivity of radio-photoluminescence glass dosimeters to accumulated doses |
title_full | Sensitivity of radio-photoluminescence glass dosimeters to accumulated doses |
title_fullStr | Sensitivity of radio-photoluminescence glass dosimeters to accumulated doses |
title_full_unstemmed | Sensitivity of radio-photoluminescence glass dosimeters to accumulated doses |
title_short | Sensitivity of radio-photoluminescence glass dosimeters to accumulated doses |
title_sort | sensitivity of radio-photoluminescence glass dosimeters to accumulated doses |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7714242/ https://www.ncbi.nlm.nih.gov/pubmed/33270667 http://dx.doi.org/10.1371/journal.pone.0234829 |
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