Gierada D S, Erickson S J, Haughton V M, Estkowski L D, Nowicki B H
Department of Radiology, Medical College of Wisconsin, Milwaukee 53226.
AJR Am J Roentgenol. 1993 May;160(5):1059-65. doi: 10.2214/ajr.160.5.8470576.
Imaging of the sacral plexus requires evaluation of both intradural and extradural components with cross-sectional techniques. Although CT is useful, individual extradural sacral nerves and the sacral plexus usually cannot be distinguished from adjacent structures. The higher contrast resolution provided by MR imaging allows the region of the sacral plexus to be examined in greater detail. With MR imaging, the constant relationship of the neural components to one another, and the gluteal vessels in their course from the sacrum to the greater sciatic foramen, can be shown consistently. An understanding of the anatomy of this area in multiple planes can aid in more accurate localization of abnormalities involving the sacral plexus. This pictorial essay reviews the MR appearance of the region of the sacral plexus.
骶丛成像需要使用横断面技术对硬膜内和硬膜外成分进行评估。虽然CT有用，但硬膜外的骶神经和骶丛通常无法与相邻结构区分开来。磁共振成像（MR成像）提供的更高对比度分辨率使得骶丛区域能够得到更详细的检查。通过MR成像，可以始终如一地显示神经成分之间的固定关系，以及臀血管从骶骨到坐骨大孔的走行过程。了解该区域在多个平面的解剖结构有助于更准确地定位涉及骶丛的异常情况。这篇图文并茂的文章回顾了骶丛区域的MR表现。
