Analysis of quality control and radiation protection testing data of selected medical electron linear accelerators in Shandong Province, China
10.13491/j.issn.1004-714X.2025.06.007
- VernacularTitle:山东省部分医用电子直线加速器质量控制检测和防护水平抽样监测结果分析
- Author:
Bao TAO
1
;
Hui SHANG
1
;
Lihei DE
2
;
Ying GUO
2
;
Tao XU
2
;
Yiwei ZHANG
2
Author Information
1. The Provincial Hospital Affiliated to Shandong First Medical University Medical Engineering Management Office, Jinan 250000, China.
2. Shandong Zhongce Calibration Quality Control Technology Co., Ltd. Radiation Detection Division, Jinan 250000, China.
- Publication Type:OriginalArticles
- Keywords:
Medical electron linear accelerator;
Quality control;
Protection level
- From:
Chinese Journal of Radiological Health
2025;34(6):824-829
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the status of quality control of medical electron linear accelerators and radiation protection of machine rooms housing these accelerators in Shandong Province. Methods A total of 52 medical electron linear accelerators in 40 hospitals across Shandong Province were selected as the study subjects. A series of indicators were tested according to relevant quality control testing specifications and radiation protection testing standards. Statistical analysis was performed using SPSS 25.0. Results The five performance indicators of the 52 medical electron linear accelerators, including offset of the radiation beam axis relative to the equal center point (hereinafter referred to as the equal center point offset), dose deviation, output dose repeatability, output dose linearity, and uniformity of the square X-ray radiation field (10 cm × 10 cm), all had a qualified rate of 100%. The dose deviation of accelerators in secondary hospitals was superior to that in tertiary hospitals. The output dose linearity and uniformity of the square X-ray radiation field of accelerators in tertiary hospitals were superior to those in secondary hospitals. All machine rooms housing the investigated medical electron linear accelerators were qualified in radiation protection testing. Conclusion The performance indicators of the medical electron linear accelerators investigated in this study and the radiation protection of machine rooms all complied with national standards. Relevant hospitals should continue to strictly implement radiation protection standards and strengthen the supervision of the equipment sites.
