Performance test and evaluation on Halcyon medical linear accelerator
- Author:
PENG Jun zhe ZHAI He zheng CHEN Dong hui ZHAI Zi po LONG Hui jia CHENG Yan meng
- Publication Type:Journal Article
- Keywords:
Medical linear accelerator Quality control Protective performance Detection Evaluation
- From:
China Occupational Medicine
2022;52(04):458-
- CountryChina
- Language:Chinese
-
Abstract:
Abstract: Objective
To evaluate the key quality control and protective performance test of Halcyon medical linear accelerator.
Methods WS 674-2020Specification for Testing of Quality Control in Medical Linear Accelerator（
According to the hereinafter
WS 674-2020） ，
referred to and the manufacturer´s manual the performance of the first Halcyon medical linear accelerator in
Results ， ，
Hunan Province was tested. The results showed that all ten indicators of the accelerator including dose deviation
， ， （ ， ， ， -
repeatability linearity daily stability and symmetry the results were 0.10% 0.03% 0.04% 0.50% and 100.50% 100.80%
）， - -
respectively met the requirements of WS 674 2020. The results of manufacturer quality control indicators such as dose rate
， ，
stability in beam gantry rotation isocenter and mechanical position accuracy megavolt image parameters and cone beam
computer tomography image parameters met the requirements of the manufacturer´s regulations. Due to the special structure and
， - ：
function of the accelerator it is difficult to detect the parameter required by WS 674 2020 as below the radiation leakage
- ， ， ， ，
outside the M zone the uniformity the indicators related to the light field the offset of the radiation beam axis the zero scale
Conclusion -
position of the rotating motion scale and others. It is difficult to carry out complete testing according to WS 6742020
for Halcyon medical linear accelerator and it is urgent for the state to issue relevant testing standards to standardize and
strengthen the quality control testing of various accelerators.
