Three-dimensional spiral CT angiography of the abdomen: initial clinical experience.
Three-dimensional spiral CT angiography of the abdomen: initial clinical experience.
复制标题
腹部三维螺旋CT血管造影：初步临床经验。
作者：
G. D. Rubin;M D Dake;S. Napel;C H McDonnell;R. Jeffrey
螺旋CT(螺旋CT)是一种将管子连续旋转和床面连续进给相结合的新技术。这允许编辑具有连续解剖信息的数据集，而无需像在常规CT中那样在切片界面处建立任意边界。螺旋扫描仪独特的数据收集方法与动态静脉造影剂团注相结合，可以成像腹部血管，特别是主动脉、肾动脉和内脏循环。通过各种图像处理技术，包括表面渲染和最大强度投影，可以获得主动脉及其主要分支的良好解剖细节。作者在15例患者中应用了这项技术，可靠地显示了三级主动脉分支和三级脾-门静脉解剖细节，非常清晰。检测到的病理情况包括肾动脉狭窄、腹主动脉夹层、腹主动脉瘤和腹膜搭桥术闭塞。
Spiral computed tomography (CT) is a new technology that couples continuous tube rotation with continuous table feed. This allows compilation of a data set that has continuous anatomic information without the establishment of arbitrary boundaries at section interfaces as in conventional CT. The unique method of data collection of the spiral scanner has been combined with a dynamic intravenous contrast material bolus to image abdominal vasculature, specifically, the aorta, renal arteries, and splanchnic circulation. Through various techniques of image processing, including surface renderings and maximum-intensity projections, it is possible to obtain excellent anatomic detail of the aorta and its major branches. The authors applied this technique in 15 patients and reliably saw third-order aortic branches as well as third-order splenic-portal venous anatomic detail with remarkable clarity. Pathologic conditions detected include stenotic renal arteries, abdominal aortic dissection, abdominal aortic aneurysm, and celiac bypass graft occlusion.