Dosimetric and qualitative analysis of kinetic properties of millennium 80 multileaf collimator system for dynamic intensity modulated radiotherapy treatments.
J Cancer Res Ther
;
2007 Jan-Mar; 3(1): 23-8
Artigo
em Inglês
| IMSEAR
| ID: sea-111380
ABSTRACT
The aim of this paper is to analyze the positional accuracy, kinetic properties of the dynamic multileaf collimator (MLC) and dosimetric evaluation of fractional dose delivery for the intensity modulated radiotherapy (IMRT) for step and shoot and sliding window (dynamic) techniques of Varian multileaf collimator millennium 80. Various quality assurance tests such as accuracy in leaf positioning and speed, stability of dynamic MLC output, inter and intra leaf transmission, dosimetric leaf separation and multiple carriage field verification were performed. Evaluation of standard field patterns as pyramid, peaks, wedge, chair, garden fence test, picket fence test and sweeping gap output was done. Patient dose quality assurance procedure consists of an absolute dose measurement for all fields at 5 cm depth on solid water phantom using 0.6 cc water proof ion chamber and relative dose verification using Kodak EDR-2 films for all treatment fields along transverse and coronal direction using IMRT phantom. The relative dose verification was performed using Omni Pro IMRT film verification software. The tests performed showed acceptable results for commissioning the millennium 80 MLC and Clinac DHX for dynamic and step and shoot IMRT treatments.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Garantia da Qualidade dos Cuidados de Saúde
/
Radiometria
/
Planejamento da Radioterapia Assistida por Computador
/
Humanos
/
Cinética
/
Desenho de Equipamento
/
Radioterapia de Intensidade Modulada
Tipo de estudo:
Pesquisa qualitativa
Idioma:
Inglês
Revista:
J Cancer Res Ther
Assunto da revista:
Neoplasms
/
Therapeutics
Ano de publicação:
2007
Tipo de documento:
Artigo
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