螺旋CT检查在腰椎间盘突出的应用探讨

On the Application of Spiral CT Scanning in Diagnosis of Lumbar Disc Herniation

目的：评价螺旋CT在诊断腰椎间盘突出症中的价值.方法：对80例CT诊断为腰椎间盘突出症患者的CT资料进行回顾性分析.结果：本组腰椎间盘突出好发于L4～5和L5 ～S1椎间隙,突出方向以中央型和侧突型多见,突出程度以突出型多见.其主要CT征象表现：①髓核向椎管内突出在椎体后缘或外侧缘形成外凸的软组织影;②硬膜囊受压变形;③神经根受压或堙没,神经移位或变粗;④椎间盘突出钙化影;⑤Schmorl结节形成和真空现象.结论：CT能清楚显示腰椎间盘突出及其方向、大小、程度以及硬膜囊、神经根受压情况,是诊断腰椎间盘突出症的首选方法.

Objectives： To evaluate the value of Spiral CT examination in the diagnosis of lumbar disc hermiation. Methods： A retrospective analysis was made on the CT data about the patients with lumbar disc herniation. Results： in this group, the disease of lumbar disc herniation often occurred in the L4-5 or L5 ～ S1 intervertebral space. Most are in the direction of central or lateral protrusion and the degree of protruding - type, the major CT features are ： 1, nucleus pulposus herniation protrudes toward the canalis spinalis and forms prominent shadow of soft tissue in the posterior or lateral margin of vertebral; 2. The dural sac deforms under compression ; 3, the nerve roots are compressed or submerged and nerves transposes or become thicker; 4, the intervertebral disc protrudes into the calcifi- cation image ; 5, Schmorl nodes form and vacuum phenomena. Conclusion： CT examination can clearly show the protrusion, direction and degree of lumbar intervertebral disc as well as compression of dural sac and nerve roots, so it is the best method for diagnosis of lumbar disc herniation.