| Chen Xue,Liu Qingfen,Yin Chen,et al.Analyses of quality control testing results of medical X-ray diagnostic equipment in Tianjin in 2019[J].Chinese Journal of Radiological Medicine and Protection,2020,40(9):692-697 |
| Analyses of quality control testing results of medical X-ray diagnostic equipment in Tianjin in 2019 |
| Received:April 07, 2020 |
| DOI：10.3760/cma.j.issn.0254-5098.2020.09.007 |
| KeyWords:Medical X-ray diagnostic equipment Quality control Status test |
| FundProject: |
| Author Name | Affiliation | E-mail | | Chen Xue | Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin 300192, China | | | Liu Qingfen | Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin 300192, China | | | Yin Chen | Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin 300192, China | | | Wei Chao | Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin 300192, China | | | Gao Jie | Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin 300192, China | | | Li Song | Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin 300192, China | | | Yu Chengcheng | Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin 300192, China | | | Zhang Wenyi | Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin 300192, China | | | Wu Quan | Institute of Radiation Medicine, Chinese Academy of Medical Sciences, Tianjin 300192, China | wuquan@irm-cams.ac.cn |
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| Abstract:: |
| Objective To understand the current status of quality control of medical X-ray diagnostic equipment in Tianjin, discuss the problems existing in the process of quality control, and provide technical basis for the relevant regulatory agencies. Methods Using stratified random sampling, a total of 401 pieces of medical X-ray diagnostic equipment distributed over 111 medical institutions in Tianjin was used for this study. X-ray multifunctional dosimeters and other types of equipment were used to perform quality control testing and evaluation under the relevant health industry standards. Results The initial testing pass rate of these equipment was 90.0%, with the pass rates of X-ray imaging equipment lower than those of X-ray fluoroscopy equipment, digital subtraction angiography (DSA) and X-ray computed tomography (CT) (χ2=9.203,3.383,5.754,P<0.05). Among the imaging equipment, the screen X-ray equipment had the lowest pass rate, followed by the breast X-ray equipment and medical digital radiography (DR). The main unqualified items were output repeatability, deviation of tube voltage indication and limit spatial resolution. DR accounted for the highest percentage of X-ray equipment that were below testing condition. The unqualified proportion of X-ray imaging equipment was higher than that of X-ray fluoroscopy equipment (χ2=8.216,P <0.05). Among the imaging equipment, the screen X-ray equipment was seen to have the highest unaqualified proportion, followed by computed radiography (CR). Among the 401 devices in this study, the initial testing pass rates of private medical institutions was not statistically different from those of public medical institutions (P>0.05). The initial pass rates of domestic equipment was lower than those of imported equipment (χ2=4.576,P<0.05). Conclusions The performance of medical X-ray diagnostic equipment in Tianjin needs to be further improved. Medical institutions should pay attention to the quality control testing of medical X-ray diagnostic equipment. The relevant regulatory agencies should strengthen oversight and management of equipment that contains unqualified items, no baseline values and below the testing conditions. |
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