管电流是ＣＴ机的重要参数之一 ,要求其值准确、稳定。而准确稳定又取决于灯丝加热电压的正确性 ,长期使用 ,灯丝钨丝不断蒸发及外界因素的影响 ,灯丝电压大小 ,ｍＡ波形变化将引起机器故障及影响Ｘ线管寿命 ,我们进行长期跟踪检测 ,用ｍＡ波形对Ｘ线管灯丝电压进行精度调整 , Tube current is one of the important parameters of the CT machine, and its value is required to be accurate and stable. Accurate and stable depends on the correctness of the heating voltage of the filament. For long-term use, the continuous evaporation of the tungsten filament and the influence of external factors, the size of the filament voltage, and changes in the mA waveform will cause machine failure and affect the life of the X-ray tube. We conduct long-term follow-up inspections. , using mA waveforms to adjust the X-ray tube filament voltage accuracy,