Output dose investigation and analysis of external beam radiotherapy in Beijing / 中国辐射卫生
Chinese Journal of Radiological Health
; (6): 123-128, 2021.
Artigo
em Chinês
| WPRIM (Pacífico Ocidental)
| ID: wpr-973666
Biblioteca responsável:
WPRO
ABSTRACT
Objective@#To study the output dose of external beam radiotherapy in Beijing and analyze the cause of output dose deviation. Guidance is given on the selection of measurement methods, calculation formulas and parameters.@*Methods@#During 2020, the output doses of medical electron accelerators, tomotherapy, cyberknife, and γ-knife were meas- ured based on the water absorbed dose calibration factor combined with the requirements in the IAEA TRS398 and TRS483 reports, and low-energy X-rays were measured based on the air kerma calibration factor combined with the requirements in the AAPM protocal. The output dose was measured and compared with the preset irradiation value.@*Results @#A total of 59 external beam radiation therapy equipments’s output dose were investigated.2 of the 49 accelerators’s absolute value of relative deviation between the system indication value and the measurement exceeded 3%; the deviation of other external beam radiotherapy equipments was less than 3%.@*Conclusion @#A unified method and multi-party quality control can ensure the accuracy of the output dose. In the routine operation of the equipment, the hospital should strictly implement periodic inspections to ensure accurate and reliable radiotherapy.
Texto completo:
Disponível
Base de dados:
WPRIM (Pacífico Ocidental)
Idioma:
Chinês
Revista:
Chinese Journal of Radiological Health
Ano de publicação:
2021
Tipo de documento:
Artigo