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| Analysis of CT machine quality control and radiation protection test results in Luoyang from 2016 to 2017 |
| WANG Xinai1, WANG Haisheng1, LI Ruzhen2, LI Zhe1 |
1. Luoyang Center for Disease Control and Prevention, Luoyang 471000 China;
2. Luoyang Municipal Bureau of Health and Family Planning Supervision |
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Abstract Objective Understand testing index of CT machine quality control and protection status of CT machine room in Luoyang city.Methods By random sampling method, 55 CT machines in 45 hospitals in Luoyang in 2016, 37 CT machines in 32 hospitals in Luoyang in 2017 were tested for quality control, radiation level around the machine room was detected, and the test results were analyzed and evaluated.Results The test results of quality control showed that the qualified rate in 2016 was 63.60% and that in 2017 was 89.20%, with statistically significant differences (P < 0.05). In 2016, the qualified rate of primary, secondary and tertiary hospitals was between 60.00% and 65.52%; in 2017, the qualified rate of primary hospitals was 78.90%; and the qualified rate of both secondary and tertiary hospitals was 100.00%. In 2016, the qualified rate of detection by a 16-row less CT machine was 51.85%, 70.60% by 16-row CT machine, and 81.80% by a 64-row CT machine or above. In 2017, the qualified rate of detection was 86.60%, 85.70% and 100.00% respectively. The qualification rate of the single index of the quality control test of the CT machine was 76.36% in 2016, while the rest were above 90.0%. The qualification rate of the single index in 2017 was all above 90.0%. According to the radiation level test results around the CT machine room, the qualified rate in 2016 was 98.04%, and the qualified rate in 2017 was 97.30%.Conclusion In 2016, the qualified rate of CT machine quality control in luoyang was relatively low. Although it was greatly improved in 2017, the supervision still needs to strengthen, with the emphasis on the supervision of primary and lower level hospitals.
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Received: 20 July 2019
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