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| The testing and analysis of quality control in 60Co sources afterloading brachytherapy machines in Sichuan Province |
| LIU Ran, MA Qiao, HU Bo, LI Changhong |
| Institute of Occupational Health and Radiological Health, Sichuan Center for Disease Control and Prevention, Chengdu 610041 China |
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Abstract 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 60Co 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.
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Received: 17 November 2018
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