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CT球管是CT机重要部件之一，价格昂贵具易损耗性。为提高经济效益与社会效益，延长其使用寿命，经对岛津SCT－300OTX运转8年间报损7只球管的使用及故障情况回顾性总结，分析研究CT球管使用寿命与运行强度关系，旨在探讨优化运行并延长其使用寿命的方法。至一般情况（1）1989年1
The CT tube is one of the important components of the CT machine, which is expensive and easy to lose. In order to increase economic and social benefits and extend its useful life, the retrospective review of the use and failure of the 7-tube loss of the Shimadzu SCT-300OTX during the eight years of operation has been carried out. The relationship between the service life of the CT tube and its operating strength has been analyzed. The aim is to explore ways to optimize operations and extend their useful life. To the general situation (1) 1989 1