Sharma Umesh, Ghai Sangeet, Paul Shashi Bala, Gulati Manpreet Singh, Bahl V K, Rajani Mira, Mukhopadhyay Sima
Department of Radiodiagnosis, All India Institute of Medical Sciences, New Delhi 110 029, India.
Clin Imaging. 2003 Jul-Aug;27(4):273-80. doi: 10.1016/s0899-7071(02)00551-x.
The relative noninvasive nature, easy accessibility, convenience and accuracy of helical CT in the rapid evaluation of not only the aorta and its branches, but the entire thorax/abdomen, makes it the best suited imaging modality for use in evaluation of aortic aneurysms and dissection. Excellent vascular opacification, the advantage of reconstructing overlapping scans without respiratory misregistration, multiplanar reconstruction and 3D rendering of the vessels highlight the benefits of helical CT. Helical CT evaluation combines the advantages of conventional CT, giving true information about the exact transverse and longitudinal extent of the aneurysm, the vessel wall, luminal thrombus and structures around the aorta, and those of aortography in the form 3D volumetric information display. The purpose of this essay is to present a spectrum of aortic aneurysms and dissection to highlight the role of helical CT in their evaluation.
螺旋CT相对无创的特性、易于获取、操作便捷以及在快速评估主动脉及其分支乃至整个胸腹部方面的准确性，使其成为评估主动脉瘤和主动脉夹层最合适的成像方式。出色的血管显影、重建重叠扫描而无呼吸配准错误的优势、血管的多平面重建和三维成像突出了螺旋CT的优点。螺旋CT评估结合了传统CT的优势，能提供有关动脉瘤的确切横向和纵向范围、血管壁、腔内血栓以及主动脉周围结构的真实信息，同时还具备血管造影以三维容积信息显示的优势。本文的目的是展示一系列主动脉瘤和主动脉夹层，以突出螺旋CT在其评估中的作用。
