The Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins Hospital, 601 N. Caroline Street, Room 4214, Baltimore, MD 21287, USA.
Skeletal Radiol. 2012 Jan;41(1):15-31. doi: 10.1007/s00256-011-1143-1. Epub 2011 Apr 10.
Peripheral nerves often traverse confined fibro-osseous and fibro-muscular tunnels in the extremities, where they are particularly vulnerable to entrapment and compressive neuropathy. This gives rise to various tunnel syndromes, characterized by distinct patterns of muscular weakness and sensory deficits. This article focuses on several upper and lower extremity tunnels, in which direct visualization of the normal and abnormal nerve in question is possible with high resolution 3T MR neurography (MRN). MRN can also serve as a useful adjunct to clinical and electrophysiologic exams by discriminating adhesive lesions (perineural scar) from compressive lesions (such as tumor, ganglion, hypertrophic callous, or anomalous muscles) responsible for symptoms, thereby guiding appropriate treatment.
周围神经经常在四肢的有限的纤维骨性和纤维肌性隧道中穿行，在这些部位特别容易受到卡压和压迫性神经病的影响。这就导致了各种隧道综合征的发生，其特征是明显的肌肉无力和感觉缺失模式。本文重点介绍了几个上肢和下肢的隧道，在这些隧道中，使用高分辨率 3T MR 神经成像（MRN）可以直接观察到正常和异常的神经。MRN 还可以通过区分引起症状的黏连性病变（神经周围瘢痕）和压迫性病变（如肿瘤、神经节、肥厚性胼胝体或异常肌肉），作为临床和电生理检查的有用补充，从而指导适当的治疗。
