Assesing multileaf collimator effect on the build-up region using Monte Carlo method

Detalhes bibliográficos
Autor(a) principal: Zarza-Moreno, M.
Data de Publicação: 2008
Outros Autores: Teixeira, Nuno, Jesus, A. P., Mora, G.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.21/2987
Resumo: Previous Monte Carlo studies have investigated the multileaf collimator (MLC) contribution to the build-up region for fields in which the MLC leaves were fully blocking the openings defined by the collimation jaws. In the present work, we investigate the same effect but for symmetric and asymmetric MLC defined field sizes (2×2, 4×4, 10×10 and 3×7 cm2). A Varian 2100C/D accelerator with 120-leaf MLC is accurately modeled fora6MVphoton beam using the BEAMnrc/EGSnrc code. Our results indicate that particles scattered from accelerator head and MLC are responsible for the increase of about 7% on the surface dose when comparing 2×2 and 10×10 cm2 fields. We found that the MLC contribution to the total build-up dose is about 2% for the 2×2 cm2 field and less than 1% for the largest fields.
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spelling Assesing multileaf collimator effect on the build-up region using Monte Carlo methodPhysicsSurface doseBuild-up doseMLCIMRTMonte CarloPrevious Monte Carlo studies have investigated the multileaf collimator (MLC) contribution to the build-up region for fields in which the MLC leaves were fully blocking the openings defined by the collimation jaws. In the present work, we investigate the same effect but for symmetric and asymmetric MLC defined field sizes (2×2, 4×4, 10×10 and 3×7 cm2). A Varian 2100C/D accelerator with 120-leaf MLC is accurately modeled fora6MVphoton beam using the BEAMnrc/EGSnrc code. Our results indicate that particles scattered from accelerator head and MLC are responsible for the increase of about 7% on the surface dose when comparing 2×2 and 10×10 cm2 fields. We found that the MLC contribution to the total build-up dose is about 2% for the 2×2 cm2 field and less than 1% for the largest fields.RCIPLZarza-Moreno, M.Teixeira, NunoJesus, A. P.Mora, G.2013-12-10T18:05:16Z20082008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/2987engZarza-Moreno M, Teixeira N, Jesus AP, Mora G. Assesing multileaf collimator effect on the build-up region using Monte Carlo method. Pol J Med Phys Eng. 2008;14(3):163-82.1425-4689info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T09:43:02Zoai:repositorio.ipl.pt:10400.21/2987Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:12:39.807560Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Assesing multileaf collimator effect on the build-up region using Monte Carlo method
title Assesing multileaf collimator effect on the build-up region using Monte Carlo method
spellingShingle Assesing multileaf collimator effect on the build-up region using Monte Carlo method
Zarza-Moreno, M.
Physics
Surface dose
Build-up dose
MLC
IMRT
Monte Carlo
title_short Assesing multileaf collimator effect on the build-up region using Monte Carlo method
title_full Assesing multileaf collimator effect on the build-up region using Monte Carlo method
title_fullStr Assesing multileaf collimator effect on the build-up region using Monte Carlo method
title_full_unstemmed Assesing multileaf collimator effect on the build-up region using Monte Carlo method
title_sort Assesing multileaf collimator effect on the build-up region using Monte Carlo method
author Zarza-Moreno, M.
author_facet Zarza-Moreno, M.
Teixeira, Nuno
Jesus, A. P.
Mora, G.
author_role author
author2 Teixeira, Nuno
Jesus, A. P.
Mora, G.
author2_role author
author
author
dc.contributor.none.fl_str_mv RCIPL
dc.contributor.author.fl_str_mv Zarza-Moreno, M.
Teixeira, Nuno
Jesus, A. P.
Mora, G.
dc.subject.por.fl_str_mv Physics
Surface dose
Build-up dose
MLC
IMRT
Monte Carlo
topic Physics
Surface dose
Build-up dose
MLC
IMRT
Monte Carlo
description Previous Monte Carlo studies have investigated the multileaf collimator (MLC) contribution to the build-up region for fields in which the MLC leaves were fully blocking the openings defined by the collimation jaws. In the present work, we investigate the same effect but for symmetric and asymmetric MLC defined field sizes (2×2, 4×4, 10×10 and 3×7 cm2). A Varian 2100C/D accelerator with 120-leaf MLC is accurately modeled fora6MVphoton beam using the BEAMnrc/EGSnrc code. Our results indicate that particles scattered from accelerator head and MLC are responsible for the increase of about 7% on the surface dose when comparing 2×2 and 10×10 cm2 fields. We found that the MLC contribution to the total build-up dose is about 2% for the 2×2 cm2 field and less than 1% for the largest fields.
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-01-01T00:00:00Z
2013-12-10T18:05:16Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.21/2987
url http://hdl.handle.net/10400.21/2987
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Zarza-Moreno M, Teixeira N, Jesus AP, Mora G. Assesing multileaf collimator effect on the build-up region using Monte Carlo method. Pol J Med Phys Eng. 2008;14(3):163-82.
1425-4689
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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