Winter T C, Nghiem H V, Freeny P C, Hommeyer S C, Mack L A
Department of Radiology, University of Washington Medical Center, Seattle 98195, USA.
Radiographics. 1995 Jul;15(4):771-80. doi: 10.1148/radiographics.15.4.7569128.
Three-dimensional (3D) helical computed tomographic (CT) angiography is a promising method of determining vascular anatomy. This technique is useful in delineating the arterial anatomy of the liver, demonstrating the normal anatomy and vascular variants in a highly visual fashion. The "typical" hepatic arterial anatomy occurs in only 55% of the population, and numerous variants exist; the standard classification system for hepatic arterial anatomy includes 10 variations. After helical scanning, postprocessing with reconstruction algorithms such as shaded surface display and maximum-intensity projection provides highly graphic, easily understandable views of vascular anatomy. The 3D CT angiograms, with their global view of the anatomy and inherent advantage of volumetric rotation of the vascular system, are useful to surgeons and others with limited experience in interpreting axial anatomy. Determination of hepatic arterial anatomy with 3D CT angiography has already been shown to be clinically useful in patients being evaluated for liver transplantation.
三维（3D）螺旋计算机断层扫描（CT）血管造影术是一种很有前景的确定血管解剖结构的方法。该技术在描绘肝脏动脉解剖结构方面很有用，能以高度直观的方式展示正常解剖结构和血管变异。“典型”的肝动脉解剖结构仅见于55%的人群，且存在众多变异；肝动脉解剖结构的标准分类系统包括10种变异。螺旋扫描后，使用如遮蔽表面显示和最大密度投影等重建算法进行后处理，可提供血管解剖结构的高度清晰、易于理解的视图。3D CT血管造影具有解剖结构的整体视图以及血管系统容积旋转的固有优势，对外科医生和其他解读轴向解剖结构经验有限的人员很有用。3D CT血管造影术确定肝动脉解剖结构已被证明在接受肝移植评估的患者中具有临床实用性。
