北京生物医学工程

CT常见故障数据分析与预防性维护

Common fault data analysis and preventive maintenance of CT

作者：杨升富张桂平王丽娇林薇薇欧伟光

单位：暨南大学附属第一医院（广州 510632） <p>广东省食品药品职业技术学校（广州 510663）<br />通信作者：欧伟光，高级工程师。E-mail：ouwg3105@126.com</p>

分类号：R318.6

出版年·卷·期（页码）：2022·41·5（521-525）

摘要：

目的以医院CT设备故障现象和易损件分类统计，探讨加强CT设备预防性维护措施在降低CT设备故障和更换易损件应用效果。方法以医院在用两台CT为研究对象，结合2014-2020年两台CT的常见故障数据进行分析。其中于2019年开始基于医院的CT使用情况进行预防性维护，之后对2014-2020年间两台CT的设备故障和易损件更换情况分别进行分类统计，并分年度对比探讨预防性维护是否有影响；最后对2017-2020年两台CT的球管更换情况和相应球管曝光次数进行统计分析，探讨预防性维护能否延长其球管寿命。结果 2014-2020年度期间，CT高发故障依次为软件故障、计算机硬件故障、网络及电缆故障和机械故障，占比分别为27.12%、24.58%、17.37%、13.14%，共计占CT总故障82.21%；CT高发易损件依次为板卡、鼠标、碳刷、轴承油、球管、高压电缆和电源。分年度进行对照CT设备采取预防性维护措施后，年度故障发生次数平稳，年度易损件更换次数变化不大，CT球管更换次数减少，单支球管的平均曝光次数增加。结论针对高发故障进行预防性维护可以有效减少CT故障发生，增加CT球管曝光次数，整体提升CT的使用质量。

Objective Based on the hospital CT equipment failure phenomenon and the classification statistics of vulnerable parts, we explored the application effect of strengthening CT equipment preventive maintenance measures in reducing CT equipment faults and replacing vulnerable parts. Method The common fault data of two CTs in hospital from 2014 to 2020 were analyzed. . The preventive maintenance was started in 2019 based on the CT usage in the hospital, after which the equipment breakdown and vulnerable parts replacement of the two CTs from 2014-2020 were classified and compared by year to explore whether preventive maintenance has an impact; finally, the tube replacement and exposure times of the two CTs from 2017 to 2020 were statistically analyzed to explore whether preventive maintenance can prolong the life of the tube. Results In the period of 2014-2020, the high incidence of CT failures were software failures, computer hardware failures, network and cable failures, and mechanical failures, with 27.12%, 24.58%, 17.37%, and 13.14% respectively, which accounted for 82.21% of the total CT failures; High incidence of CT vulnerable parts are, boards, mouse, carbon brushe, bearing oil, ball tube, high-voltage cable and power supply. We found that the number of annual failures was stable, the number of annual vulnerable parts replacement did not change a lot, the number of CT bulb tube replacement decreased, and the average exposures times of a single tube has increased after the preventive maintenance measures were taken against the CT equipment by years. Conclusions Preventive maintenance for high-incidence failures can effectively reduce the occurrence of CT failures, increase the times of CT tube exposure, and improve the overall quality of CT use.

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