X 线计算机断层扫描装置(CT),是二十世纪中的一项重大科技成就。它是综合应用 X 线技术、计算机技术、信号检测、图象重建和图象处理等现代科学手段的先进医用诊断设备。X 线 CT 装置对人体各组织的密度和空间分辩能力及对三维物体的显示方面具有独特的优点,它的断层图象,可以诊 X-ray computed tomography (CT) is a major scientific achievement of the twentieth century. It is an advanced medical diagnostic device that integrates modern scientific means such as X-ray technology, computer technology, signal detection, image reconstruction and image processing. The X-ray CT device has unique advantages in density and spatial resolution of human tissues and in the display of three-dimensional objects. Its tomographic images can be consulted