GEANT4 tuning for pCT development
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1063/1.3608985 http://hdl.handle.net/11449/72662 |
Resumo: | Proton beams in medical applications deal with relatively thick targets like the human head or trunk. Thus, the fidelity of proton computed tomography (pCT) simulations as a tool for proton therapy planning depends in the general case on the accuracy of results obtained for the proton interaction with thick absorbers. GEANT4 simulations of proton energy spectra after passing thick absorbers do not agree well with existing experimental data, as showed previously. Moreover, the spectra simulated for the Bethe-Bloch domain showed an unexpected sensitivity to the choice of low-energy electromagnetic models during the code execution. These observations were done with the GEANT4 version 8.2 during our simulations for pCT. This work describes in more details the simulations of the proton passage through aluminum absorbers with varied thickness. The simulations were done by modifying only the geometry in the Hadrontherapy Example, and for all available choices of the Electromagnetic Physics Models. As the most probable reasons for these effects is some specific feature in the code, or some specific implicit parameters in the GEANT4 manual, we continued our study with version 9.2 of the code. Some improvements in comparison with our previous results were obtained. The simulations were performed considering further applications for pCT development. © 2011 American Institute of Physics. |
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GEANT4 tuning for pCT developmentGEANT4 codeMonte Carlo simulationsProton computed tomography (pCT)Proton beams in medical applications deal with relatively thick targets like the human head or trunk. Thus, the fidelity of proton computed tomography (pCT) simulations as a tool for proton therapy planning depends in the general case on the accuracy of results obtained for the proton interaction with thick absorbers. GEANT4 simulations of proton energy spectra after passing thick absorbers do not agree well with existing experimental data, as showed previously. Moreover, the spectra simulated for the Bethe-Bloch domain showed an unexpected sensitivity to the choice of low-energy electromagnetic models during the code execution. These observations were done with the GEANT4 version 8.2 during our simulations for pCT. This work describes in more details the simulations of the proton passage through aluminum absorbers with varied thickness. The simulations were done by modifying only the geometry in the Hadrontherapy Example, and for all available choices of the Electromagnetic Physics Models. As the most probable reasons for these effects is some specific feature in the code, or some specific implicit parameters in the GEANT4 manual, we continued our study with version 9.2 of the code. Some improvements in comparison with our previous results were obtained. The simulations were performed considering further applications for pCT development. © 2011 American Institute of Physics.Instituto Politécnico Universidade Do Estado Do Rio de Janeiro, Rua Alberto Rangel, s/n, 28630-050 Nova Friburgo, RJUniversidade Tecnológica Federal Do Paraná, Av. Sete de Setembro 3165, 80230-901, Curitiba, PRCentro de Aplicaciones Tecnologicas Y Desarrollo Nuclear, HavanaInstituto de Biociências de Botucatu UNESP, Distrito de Rubião Jr. s/n, 18618-000, Botucatu, SPLaboratório de Instrumentação Nuclear COPPE UFRJ, Av. Horácio Macedo 2030, 21941-914 Rio de Janeiro, RJInstituto de Biociências de Botucatu UNESP, Distrito de Rubião Jr. s/n, 18618-000, Botucatu, SPUniversidade do Estado do Rio de Janeiro (UERJ)Universidade Tecnológica Federal Do ParanáCentro de Aplicaciones Tecnologicas Y Desarrollo NuclearUniversidade Estadual Paulista (Unesp)Universidade Federal do Rio de Janeiro (UFRJ)Yevseyeva, OlgaDe Assis, Joaquim T.Evseev, IvanSchelin, Hugo R.Paschuk, Sergei A.Milhoretto, EdneySetti, João A. P.Díaz, Katherin S.Hormaza, Joel M. [UNESP]Lopes, Ricardo T.2014-05-27T11:25:59Z2014-05-27T11:25:59Z2011-09-09info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject340-344application/pdfhttp://dx.doi.org/10.1063/1.3608985AIP Conference Proceedings, v. 1351, p. 340-344.0094-243X1551-7616http://hdl.handle.net/11449/7266210.1063/1.36089852-s2.0-800524150472-s2.0-80052415047.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAIP Conference Proceedingsinfo:eu-repo/semantics/openAccess2023-11-11T06:11:30Zoai:repositorio.unesp.br:11449/72662Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:22:40.311450Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
GEANT4 tuning for pCT development |
title |
GEANT4 tuning for pCT development |
spellingShingle |
GEANT4 tuning for pCT development Yevseyeva, Olga GEANT4 code Monte Carlo simulations Proton computed tomography (pCT) |
title_short |
GEANT4 tuning for pCT development |
title_full |
GEANT4 tuning for pCT development |
title_fullStr |
GEANT4 tuning for pCT development |
title_full_unstemmed |
GEANT4 tuning for pCT development |
title_sort |
GEANT4 tuning for pCT development |
author |
Yevseyeva, Olga |
author_facet |
Yevseyeva, Olga De Assis, Joaquim T. Evseev, Ivan Schelin, Hugo R. Paschuk, Sergei A. Milhoretto, Edney Setti, João A. P. Díaz, Katherin S. Hormaza, Joel M. [UNESP] Lopes, Ricardo T. |
author_role |
author |
author2 |
De Assis, Joaquim T. Evseev, Ivan Schelin, Hugo R. Paschuk, Sergei A. Milhoretto, Edney Setti, João A. P. Díaz, Katherin S. Hormaza, Joel M. [UNESP] Lopes, Ricardo T. |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Estado do Rio de Janeiro (UERJ) Universidade Tecnológica Federal Do Paraná Centro de Aplicaciones Tecnologicas Y Desarrollo Nuclear Universidade Estadual Paulista (Unesp) Universidade Federal do Rio de Janeiro (UFRJ) |
dc.contributor.author.fl_str_mv |
Yevseyeva, Olga De Assis, Joaquim T. Evseev, Ivan Schelin, Hugo R. Paschuk, Sergei A. Milhoretto, Edney Setti, João A. P. Díaz, Katherin S. Hormaza, Joel M. [UNESP] Lopes, Ricardo T. |
dc.subject.por.fl_str_mv |
GEANT4 code Monte Carlo simulations Proton computed tomography (pCT) |
topic |
GEANT4 code Monte Carlo simulations Proton computed tomography (pCT) |
description |
Proton beams in medical applications deal with relatively thick targets like the human head or trunk. Thus, the fidelity of proton computed tomography (pCT) simulations as a tool for proton therapy planning depends in the general case on the accuracy of results obtained for the proton interaction with thick absorbers. GEANT4 simulations of proton energy spectra after passing thick absorbers do not agree well with existing experimental data, as showed previously. Moreover, the spectra simulated for the Bethe-Bloch domain showed an unexpected sensitivity to the choice of low-energy electromagnetic models during the code execution. These observations were done with the GEANT4 version 8.2 during our simulations for pCT. This work describes in more details the simulations of the proton passage through aluminum absorbers with varied thickness. The simulations were done by modifying only the geometry in the Hadrontherapy Example, and for all available choices of the Electromagnetic Physics Models. As the most probable reasons for these effects is some specific feature in the code, or some specific implicit parameters in the GEANT4 manual, we continued our study with version 9.2 of the code. Some improvements in comparison with our previous results were obtained. The simulations were performed considering further applications for pCT development. © 2011 American Institute of Physics. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-09-09 2014-05-27T11:25:59Z 2014-05-27T11:25:59Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1063/1.3608985 AIP Conference Proceedings, v. 1351, p. 340-344. 0094-243X 1551-7616 http://hdl.handle.net/11449/72662 10.1063/1.3608985 2-s2.0-80052415047 2-s2.0-80052415047.pdf |
url |
http://dx.doi.org/10.1063/1.3608985 http://hdl.handle.net/11449/72662 |
identifier_str_mv |
AIP Conference Proceedings, v. 1351, p. 340-344. 0094-243X 1551-7616 10.1063/1.3608985 2-s2.0-80052415047 2-s2.0-80052415047.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
AIP Conference Proceedings |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
340-344 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808128801879621632 |