CT灌注技术是近年来随着CT机软硬件技术的进步,以研究组织和器官血流动力学变化为目的、在同层动态CT及图像处理技术上发展起来的。多层螺旋CT克服了普通螺旋CT单层灌注成像的局限性,提高了长轴(Z轴)方向的空间分辨率,能进行0.5s以下的快速扫描,具有快速、准确、无创、三维的评 CT perfusion technology in recent years with the CT machine hardware and software technology advances in order to study the organization and organ hemodynamic changes for the purpose of the same layer dynamic CT and image processing technology developed. Multi-slice spiral CT overcomes the limitations of single-slice perfusion imaging in general spiral CT and improves the spatial resolution in the direction of the long axis (Z axis). It can perform rapid scanning below 0.5s with rapid, accurate, non-invasive and three-