Discussion on the Constancy Testing and Maintenance Management of CT
Objective:To explore the role of constancy testing of CT equipment on quality control work and equipment maintenance management.Methods:Collect the data including the workload,maintenance,repair,and quality control,execution the constancy test and analyze the data for CT value(water),uniformity,and noise for 3 CTs in the imaging center in hospital from 2022 to 2023.Results:Three CTs saw an increase in the number of patients examined in 2023 compared to 2022,with increases of 13.1％,75.0％,and 35.1％ respectively.They had been instances of hardware replacements such as X-ray tube and detector module.The constancy test results for CT value (water) were-0.42-2.84HU,-1.62--0.27HU and-1.0-1.6HU,the constancy test results for uniformity were-3.04--0.84HU,-1.34-1.61HU and-1.4-1.7HU,the constancy test results for noise were 0.246％-0.281％,0.214％-0.249％ and 0.251％-0.304％.They all conform to the standard of WS 519-2019.Conclusion:The increase in CT examination workload requires an enhanced focus on routine inspections and maintenance of the equipment.CT constancy testing can reflect changes in the quality of the equipment,serving as an important reference for medical institutions to formulate quality assurance and maintenance plans.
computed tomographyquality controlconstancy testweighted CT dose indexCT value (water)
万方数据
维普
