CT球管故障原因复杂多样,按故障部位可大致分为管芯、管套和散热器故障,而管芯故障以真空度下降,管芯内打火,灯丝开路或半开路,玻璃管壳破碎,旋转阳极不转,X线量不足为主;管套故障则以管套内打火和管套内漏油为主;散热器故障以风扇、油泵损坏和过滤阻塞为主。笔者在长期大量的 The causes of CT tube failures are complex and varied. Fault locations can be broadly categorized into failures of the die, the jacket, and the radiator. The failure of the die is reduced by the degree of vacuum, the ignition in the die, the open or semi-open circuit of the filament, and the breakage of the glass envelope. The rotating anode does not turn and the X-ray quantity is insufficient. The fault of the pipe sleeve is mainly caused by the ignition in the pipe sleeve and the oil leakage in the pipe sleeve. The radiator fault is mainly caused by the damage of the fan, the oil pump and the filter blocking. The author has a lot of long-term