CT球管是CT机最容易损坏的零件之一，具有一定的使用寿命。最客观的衡量标准是曝光次数的多少。如何延长球管的使用寿命，我们采取如下措施：1在不影响诊断的前提下，适当降抵扫描条件，适时调鳖扫描参数CT图像的质量与检测器接收的光子数量有密切关系。接收的光子越少，图像密 The CT tube is one of the most easily damaged parts of the CT machine and has a certain service life. The most objective measure is the number of exposures. How to extend the service life of the tube, we take the following measures: 1 Under the premise of not affecting the diagnosis, the scanning conditions are properly reduced, and the quality of the CT image of the scan parameter is closely related to the number of photons received by the detector. The less photons received, the image density