A feasibility study of Fricke dosimetry as an absorbed dose to water standard for 192Ir HDR sources.
High dose rate brachytherapy (HDR) using 192Ir sources is well accepted as an important treatment option and thus requires an accurate dosimetry standard. However, a dosimetry standard for the direct measurement of the absolute dose to water for this particular source type is currently not available...
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Public Library of Science (PLoS)
2014-01-01
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Series: | PLoS ONE |
Online Access: | http://europepmc.org/articles/PMC4270754?pdf=render |
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author | Carlos Eduardo deAlmeida Ricardo Ochoa Marilene Coelho de Lima Mariano Gazineu David Evandro Jesus Pires José Guilherme Peixoto Camila Salata Mario Antônio Bernal |
author_facet | Carlos Eduardo deAlmeida Ricardo Ochoa Marilene Coelho de Lima Mariano Gazineu David Evandro Jesus Pires José Guilherme Peixoto Camila Salata Mario Antônio Bernal |
author_sort | Carlos Eduardo deAlmeida |
collection | DOAJ |
description | High dose rate brachytherapy (HDR) using 192Ir sources is well accepted as an important treatment option and thus requires an accurate dosimetry standard. However, a dosimetry standard for the direct measurement of the absolute dose to water for this particular source type is currently not available. An improved standard for the absorbed dose to water based on Fricke dosimetry of HDR 192Ir brachytherapy sources is presented in this study. The main goal of this paper is to demonstrate the potential usefulness of the Fricke dosimetry technique for the standardization of the quantity absorbed dose to water for 192Ir sources. A molded, double-walled, spherical vessel for water containing the Fricke solution was constructed based on the Fricke system. The authors measured the absorbed dose to water and compared it with the doses calculated using the AAPM TG-43 report. The overall combined uncertainty associated with the measurements using Fricke dosimetry was 1.4% for k = 1, which is better than the uncertainties reported in previous studies. These results are promising; hence, the use of Fricke dosimetry to measure the absorbed dose to water as a standard for HDR 192Ir may be possible in the future. |
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issn | 1932-6203 |
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last_indexed | 2024-12-22T09:09:19Z |
publishDate | 2014-01-01 |
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spelling | doaj.art-eff9d3679a3c4c9e93831eb9f38934a42022-12-21T18:31:31ZengPublic Library of Science (PLoS)PLoS ONE1932-62032014-01-01912e11515510.1371/journal.pone.0115155A feasibility study of Fricke dosimetry as an absorbed dose to water standard for 192Ir HDR sources.Carlos Eduardo deAlmeidaRicardo OchoaMarilene Coelho de LimaMariano Gazineu DavidEvandro Jesus PiresJosé Guilherme PeixotoCamila SalataMario Antônio BernalHigh dose rate brachytherapy (HDR) using 192Ir sources is well accepted as an important treatment option and thus requires an accurate dosimetry standard. However, a dosimetry standard for the direct measurement of the absolute dose to water for this particular source type is currently not available. An improved standard for the absorbed dose to water based on Fricke dosimetry of HDR 192Ir brachytherapy sources is presented in this study. The main goal of this paper is to demonstrate the potential usefulness of the Fricke dosimetry technique for the standardization of the quantity absorbed dose to water for 192Ir sources. A molded, double-walled, spherical vessel for water containing the Fricke solution was constructed based on the Fricke system. The authors measured the absorbed dose to water and compared it with the doses calculated using the AAPM TG-43 report. The overall combined uncertainty associated with the measurements using Fricke dosimetry was 1.4% for k = 1, which is better than the uncertainties reported in previous studies. These results are promising; hence, the use of Fricke dosimetry to measure the absorbed dose to water as a standard for HDR 192Ir may be possible in the future.http://europepmc.org/articles/PMC4270754?pdf=render |
spellingShingle | Carlos Eduardo deAlmeida Ricardo Ochoa Marilene Coelho de Lima Mariano Gazineu David Evandro Jesus Pires José Guilherme Peixoto Camila Salata Mario Antônio Bernal A feasibility study of Fricke dosimetry as an absorbed dose to water standard for 192Ir HDR sources. PLoS ONE |
title | A feasibility study of Fricke dosimetry as an absorbed dose to water standard for 192Ir HDR sources. |
title_full | A feasibility study of Fricke dosimetry as an absorbed dose to water standard for 192Ir HDR sources. |
title_fullStr | A feasibility study of Fricke dosimetry as an absorbed dose to water standard for 192Ir HDR sources. |
title_full_unstemmed | A feasibility study of Fricke dosimetry as an absorbed dose to water standard for 192Ir HDR sources. |
title_short | A feasibility study of Fricke dosimetry as an absorbed dose to water standard for 192Ir HDR sources. |
title_sort | feasibility study of fricke dosimetry as an absorbed dose to water standard for 192ir hdr sources |
url | http://europepmc.org/articles/PMC4270754?pdf=render |
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