第二代双源CT大螺距模式低辐射剂量血管成像进展

Application of high-pitch and low-dose mode using dual-source CT by computed tomography angiography

双源CT应用临床以来,在CT血管造影方面越来越显示出其独特优势,其较高的时间和空间分辨率及较快的扫描速度使获得高质量的图像成为可能.双源CT大螺距扫描模式在血管成像方面具有图像质量好、有效射线剂量低、扫描时间快等优点.笔者就第二代双源CT大螺距模式在血管成像方面的进展及临床应用价值进行综述.

Given the unique advantages of dual-source computed tomography （DSCT）,such as high temporary and spatial resolutions and fast scanning speed,its application in angiography has made possible for high-quality images to be obtained.In high-pitch scanning mode,DSCT can obtain high-quality angiography images with low effective radiation dose at a short scan time.This paper reviewed the progress and clinical applications of high-pitch mode DSCT in computed tomography angiography.