脊髓多发性硬化的 MRI 诊断

MRI diagnosis of multiple sclerosis in the spinal cord

目的：提高对脊髓多发性硬化ＭＲＩ特征的认识。材料与方法：对１４例脊髓多发性硬化患者进行颈部ＭＲＩ检查。对病变的长度，横断面上病变大小、位置及病变的强化进行评价。结果：１４例患者共发现病变３１个。脊髓多发性硬化ＭＲＩ特征性表现为：大多数病变矢状位长度小于２个椎体（８７．１％），病变长度大于宽度，病变局部脊髓正常或轻度肿胀。横断面上病变位于脊髓周边，面积多小于脊髓断面（１／２）（９０．３％），病变在急性或活动期有强化。结论：ＭＲＩ不仅可以发现脊髓多发硬化病变，并且能显示其特征性表现，有助于与其他脊髓内病变进行鉴别。

Puropse: To increase the ability to recognize the characteristic MRI features of multiple sclerosis (MS) in the spinal cord. Materials and methods: Fourteen patients with multiple sclerosis underwent MR examination of the cervical spine. The MS plaques were evaluated for lesion length, size on cross section, 1ocation, and lesion enhancement. Results: Thirty one demyelination plaques of the cervical spinal cord were found in the 14 patients, MRI features showed that the majority of plaques was less than two vertebra body in length (87.1%); the plaques appeared larger in length than in width. The involved cord segment was normal or with mild localized swelling. The plaques were located peripherally and occupied less than 50% of the cross sectional area of the cord (90.3%). The plaques in acute or active stage were enhanced by Gd DTPA. Conclusion: The lesion of spinal multiple sclerosis and its characteristic manifestations could be well demonstrated on MRI, this would help to differentiate multiple sclerosis from other lesions of the spinal cord.