Abstract
Objective:To optimize maintenance strategy for computerized tomography(CT)equipment of hospital on the basis of fault tree model,and to enhance the accuracy and effectiveness of maintenance for CT equipment of hospitals.Methods:The fault tree analysis model was applied to conduct a comprehensive analysis for faults of CT equipment.By determining the top events,intermediate events,bottom events,and the application of logical gates,a fault tree model of CT equipment was constructed,which was utilized to conduct quantitative analysis for faults of CT equipment,and propose optimized maintenance strategies.Twenty CT equipment of clinical use at Bainaohu Hospital of People's Hospital of Xinjiang Uygur Autonomous Region and People's Hospital of Xinjiang Uygur Autonomous Region during January and December 2024 were selected.According to different management modes for equipment,they were managed respectively by using conventional management mode and management mode with fault tree model,with 10 equipment in each mode.The fault rate of CT equipment,maintenance quality for equipment,satisfaction of operators,and maintenance effect for equipment were compared between the two management modes.Results:In the 30 equipment faults of using management mode with fault tree model,the fault rate of CT self-equipment and the fault rate of improperly manual operation of them were respectively 13.33%(4/30)and 16.67%(5/30),all of which were lower than 40.00%(24/60)and 41.67%(25/60)of 60 faults of using conventional management mode,and the differences of them were significant(x2=6.636,5.625,P<0.05).The fault rate of predictive judgement of using management mode with fault tree model was 90%(27/30),which was higher than 58.33%(35/60)of using conventional management mode,and the difference was significant(x2=9.358,P<0.05).The increased extents of response time for fault,repair time,and average management cost of CT equipment of using management mode with fault tree model were less than those of conventional management mode,and the differences were statistically significant(t=10.938,10.909,7.074,P<0.05).The satisfaction scores of the operators of CT equipment for operation quality,usage operation,and maintenance and repair of CT equipment of using management mode with fault tree model were higher than those of using conventional management mode,and the differences were statistically significant(t=18.470,10.629,5.347,P<0.05).The average repair rate and availability rate of CT equipment of using management mode with fault tree model were higher than those of using conventional management mode,and the differences were statistically significant(t=10.834,13.093,P<0.05),while the average recurrence rate of the fault of using management mode with fault tree model was lower than that of using conventional management mode,and the difference was statistically significant(t=21.452,P<0.05).Conclusion:The optimization of maintenance strategy of CT equipment of hospital on the basis of the fault tree model can significantly reduce the fault rate of equipment,and improve operation quality of equipment,and increase satisfaction of operators,which can achieve better maintenance effect for equipment.关键词
故障树模型/计算机体层成像(CT)/维修策略/优化研究Key words
Fault tree analysis model/Computed tomography(CT)/Maintenance strategy/Optimization research分类
医药卫生
