[Use experience and problems in the optimization of intensity modulated radiation therapy (IMRT)--Focus on head & neck].
Nihon Hoshasen Gijutsu Gakkai Zasshi
; 66(8): 879-84, 2010 Aug 20.
Article
em Ja
| MEDLINE
| ID: mdl-20953103
ABSTRACT
We present the main points of the optimization in IMRT. The skin surface of the planned target volume was reduced by a few millimeters, in view of the limitations of a calculation grid in accurately estimating the influence of build-up or contamination of electrons. Air cavities such as nasal or oral cavities were, in general, filled with water equivalent density in the dose calculation. Planned target volume was contracted by 5 mm when PTV of a higher prescribed dose was delineated adjacent to it. The 5 mm width of ring-shaped ROI was set at 5 mm outside of the entire PTV to eliminate hot spots. Physical quality assurance is extremely important to eradicate unexpected dose inhomogeneity, and meticulous efforts are required.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Radioterapia de Intensidade Modulada
/
Neoplasias de Cabeça e Pescoço
Limite:
Humans
Idioma:
Ja
Ano de publicação:
2010
Tipo de documento:
Article