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目的 通过对10台60Co后装近距离治疗机性能进行检测,调查四川省60Co后装近距离治疗机质量控制现状,探讨60Co后装近距离治疗机质量控制的测试方法.方法 根据标准WS 262-2017《后装γ源近距离治疗质量控制检测规范》的检测方法对60Co后装近距离治疗机6项质量控制检测项目进行检测.结果 1颗60Co放射源活度相对偏差为-9.9％,超出了±5％的要求范围.一台60Co后装近距离治疗机放射源累计定位误差不在标准限值内.结论60Co后装近距离治疗机在制定计划和治疗前,应该对每颗60Co后装源活度进行质量控制检测,定期对后装机各项性能指标质量控制,加强对机器性能的维护.“,”Objective By testing the performance of 10 60Co sources afterloading brachytherapy machines, the quality control status in Sichuan province was investigated, and research the test methods for quality control. Methods According to the test methods of the standard WS 262-2017 “Inspection specification for quality control of γ-ray sources afterloading brachytherapy ”, 6 quality control test items of 60 Co afterloading brachytherapy machine were tested.Results The relative deviation of the activity of a 60Co source was-9.9％, which exceeds the range of ± 5.0％. The source cumulative positioning error of 1 machine is not within the standard limit. Conclusion Before making the plan and treatment, the quality control test should be carried out on the activity of every 60Co afterloading brachytherapy source and the performance of afterloading brachytherapy machine. The maintenance of machine performance should be strengthened.