GE8800CT 机是 X 线型 CT 中的第三代产品,美国 GE 公司早已不再生产。但由于该机有较好的成像质量,较稳定的性能,加上价格便宜。近几年,从国外引进了几十台二手机。跟新机相比,产生图像环状伪影的可能性大大增加。一般说来,造成环状伪影的原因很多。以下以检修示例说明。 GE8800CT machine is X-ray CT in the third generation of products, the United States GE has long been no longer produced. However, due to the aircraft has better imaging quality, more stable performance, coupled with cheap. In recent years, dozens of second-hand machines have been imported from abroad. Compared with the new machine, the possibility of image ring artifacts greatly increased. In general, there are many reasons for ring artifacts. The following is an example of maintenance.