Analysis on the Decrease of Planning Target Volume in the Case of Lung Radiation Surgery with the Application of Respiratory Gated Radiotherpy Method / 의학물리
Korean Journal of Medical Physics
;
: 263-268, 2008.
Artigo
em Coreano
| WPRIM
| ID: wpr-93132
ABSTRACT
The application of a respiratory gated radiotherpy method to the lung radiation surgery was evaluated compared with the conventional method in which the whole tumor motion range is considered in the delineation of PTV (Planning target volume). The four dimensional CT simulation images were acquired for the five NSCLC (Non-small cell lung cancer) patients for radiation surgery. The respiratory gated plan was prepared with the 50% phase CT images and the conventional method was planned based on the ITV (Internal target volume) which include all the target volumes created in each phase CT images within a whole respiratory period. The DVH (Dose volume histogram) of OAR (Organ at risk) which calculated in each method was compared for the evaluation of the plan properness. The relative decrease of OARs' DVH were verified in the application of respiratory gated method. The average decrease rate were 16.88+/-9.97% in the bronchus, 34.13+/-19.15% in the spinal cord, 28.42+/-18.49% in the chest wall and 32.48+/-16.66% in the lung. Based on these results, we can verified the applicability and the effectiveness of the respiratory gated method in the lung radiation surgery.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Medula Espinal
/
Brônquios
/
Parede Torácica
/
Tomografia Computadorizada Quadridimensional
/
Pulmão
Limite:
Humanos
Idioma:
Coreano
Revista:
Korean Journal of Medical Physics
Ano de publicação:
2008
Tipo de documento:
Artigo
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