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...

Full description

Bibliographic Details
Main Authors: Carlos Eduardo deAlmeida, Ricardo Ochoa, Marilene Coelho de Lima, Mariano Gazineu David, Evandro Jesus Pires, José Guilherme Peixoto, Camila Salata, Mario Antônio Bernal
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2014-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC4270754?pdf=render
_version_ 1819131048999518208
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.
first_indexed 2024-12-22T09:09:19Z
format Article
id doaj.art-eff9d3679a3c4c9e93831eb9f38934a4
institution Directory Open Access Journal
issn 1932-6203
language English
last_indexed 2024-12-22T09:09:19Z
publishDate 2014-01-01
publisher Public Library of Science (PLoS)
record_format Article
series PLoS ONE
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
work_keys_str_mv AT carloseduardodealmeida afeasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT ricardoochoa afeasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT marilenecoelhodelima afeasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT marianogazineudavid afeasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT evandrojesuspires afeasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT joseguilhermepeixoto afeasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT camilasalata afeasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT marioantoniobernal afeasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT carloseduardodealmeida feasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT ricardoochoa feasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT marilenecoelhodelima feasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT marianogazineudavid feasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT evandrojesuspires feasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT joseguilhermepeixoto feasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT camilasalata feasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources
AT marioantoniobernal feasibilitystudyoffrickedosimetryasanabsorbeddosetowaterstandardfor192irhdrsources