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螺旋CT（spiralCT，SCT）是90年代问世的新型CT，它利用滑环技术将扫描架的固定部与转动部相连，在病人以一定恒速通过扫描架时进行连续快速的体积数据采集，获得的连续数据能以任意间隔重建成横断面像。同普通CT扫描相比，它的最大特点和优势就是扫描速度快，可在20～30秒内完
Spin CT (CTT) is a new type of CT that came out in the 90’s. It uses the slip ring technology to connect the fixed part of the gantry and the rotating part, and acquires the continuous and rapid volume data when the patient passes the gantry at a constant speed Continuous data can be reconstructed into cross-sectional images at arbitrary intervals. Compared with ordinary CT scan, its greatest feature and advantage is the scanning speed, can be completed in 20 to 30 seconds