Haughton V M
Eur Neurol. 1982;21(3):198-203. doi: 10.1159/000115481.
As the resolution and versatility of CT equipment have improved, the role of CT in the spine has expanded. The purpose of this paper is to review briefly the CT appearance of the normal lumbar root sheaths, the dural sac, and the intervertebral discs, and to illustrate the CT diagnosis of herniated nucleus pulposus, bulging annulus, and diastematomyelia. In herniated discs CT shows a focal protrusion of the disc margin, in a bulging annulus it shows a generalized extension of the disc margin beyond the vertebral body margins. In diastematomyelia CT shows two spinal cords always with dimensions less than that of the normal spinal cord. Replacement of myelography by CT in these conditions and others involving the lumbar spinal canal can be anticipated.
随着CT设备分辨率和多功能性的提高，CT在脊柱方面的作用得到了扩展。本文旨在简要回顾正常腰神经根鞘、硬脊膜囊和椎间盘的CT表现，并阐述椎间盘突出、椎间盘膨出和脊髓纵裂的CT诊断。在椎间盘突出时，CT显示椎间盘边缘的局灶性突出；在椎间盘膨出时，CT显示椎间盘边缘广泛延伸至椎体边缘之外。在脊髓纵裂时，CT显示两条脊髓，其尺寸总是小于正常脊髓。可以预期，在这些情况以及其他涉及腰椎管的情况下，CT将取代脊髓造影。
