Zobrazeno 1 - 10
of 91
pro vyhledávání: '"Hélio, Yoriyaz"'
Autor:
Paula Cristina Guimarães Antunes, Paulo de Tarso Dalledone Siqueira, Julian Barbosa Marco Shorto, Hélio Yoriyaz
Publikováno v:
Brachytherapy. 22:80-92
In this paper we present a phantom designed to provide conditions to generate set of "true" independent reference data as requested by TG-186, and mitigating the scarcity of experimental studies on brachytherapy validation. It was used to perform acc
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 7, Iss 2A (2019)
The Monte Carlo method for radiation transport has been adapted for medical physics application. More specifically, it has received more attention in clinical treatment planning with the development of more efficient computer simulation techniques. I
Externí odkaz:
https://doaj.org/article/d0649b3f0fba4e919b686e1996c5faa1
Autor:
Amanda Cristina Mazer, Marcos Vinicius Nakaoka Nakandakari, Victor Augusto Bertotti Ribeiro, Paulo de Tarso Dalledone Siqueira, Julian Marco Barbosa Shorto, Hélio Yoriyaz
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 7, Iss 2A (2019)
Ionizing radiation therapies have been improving over the years, becoming more specific for each patient. Thereby, as the treatment planning system (TPS) complexities increases, the quality assurance (QA) methods have to be in constant evolution. One
Externí odkaz:
https://doaj.org/article/5c141f06fd074f04b469837f6749976a
Autor:
Henrique Carvalhinho Büll, Mario Ribeiro Neto, Carlos Eduardo Bravin Maistro, Hélio Yoriyaz, Caroline Castilhano Sampaio
Publikováno v:
Revista Brasileira de Física Médica. 17:649
Este trabalho avaliou retrospectivamente correções de imagens planares de pacientes já submetidos a tratamentos de neuroeixo, a fim de quantificar a magnitude dos erros de posicionamento e aplicá-los em diferentes técnicas de radioterapia em arc
Autor:
Celine Van Beveren, Erik Roelofs, Evert J. Van Limbergen, An-Sofie Verrijssen, R. Voncken, Brigitte Reniers, Maaike Berbee, Hélio Yoriyaz, Frank Verhaegen, Murillo Bellezzo, Gabriel P. Fonseca
Publikováno v:
Brachytherapy, 19(4), 544-553. Elsevier Science
PURPOSE: Dose escalation yields higher complete response to rectal tumors, which may enable the omission of surgery. Dose escalation using 50 kVp contact x-ray brachytherapy (CXB) allow the treatment of a selective volume, resulting in low toxicity a
Autor:
Amanda Cristina Mazer, Hélio Yoriyaz
Publikováno v:
Revista Brasileira de Física Médica. 16:676
Em Radioterapia Guiada por Imagem (IGRT), é comum a aquisição de diversas imagens de um paciente e, por consequência, a realização de registro de imagem para a comparação entre elas. Devido a isso, é fundamental que sejam realizados tanto um
Autor:
Julian Marco Barbosa Shorto, Hélio Yoriyaz, Tassio A. Cavalieri, Paulo T.D. Siqueira, Frederico A. Genezini
Publikováno v:
Applied Radiation and Isotopes. 150:31-38
TLDs dosimeters are frequently presented as a viable choice for dosimetric studies when dealing with mixed neutron-gamma radiation fields. However, this choice is not without some drawbacks, because not only TLD response is highly dependent on partic
Autor:
João Manuel Oliveira, Hélio Yoriyaz, Larissa Frediani, Silmara Luci Vernucio, Paula Cristina Guimarães Antunes
Publikováno v:
Revista Brasileira de Física Médica. 15:576
Foi proposta a utilização do processo de Análise de Modos de Falha e de suas Consequências (FMEA) como ferramenta de decisão para a escolha e priorização dos testes de comissionamento para novos equipamentos. Um aplicador de Vienna para braqui
Autor:
Erik Roelofs, An-Sofie Verrijssen, Brigitte Reniers, M. Barbée, E. Van Limbergen, Frans Verhaegen, Murillo Bellezzo, C. Van Beveren, R. Voncken, Gabriel P. Fonseca, Hélio Yoriyaz
Publikováno v:
Radiotherapy and Oncology. 152:S1102-S1103
Autor:
Murillo, Bellezzo, Gabriel P, Fonseca, Robert, Voncken, An-Sofie, Verrijssen, Celine, Van Beveren, Erik, Roelofs, Hélio, Yoriyaz, Brigitte, Reniers, Evert J, Van Limbergen, Maaike, Berbée, Frank, Verhaegen
Publikováno v:
Brachytherapy. 19(4)
Dose escalation yields higher complete response to rectal tumors, which may enable the omission of surgery. Dose escalation using 50 kVp contact x-ray brachytherapy (CXB) allow the treatment of a selective volume, resulting in low toxicity and organs