脊髓栓系综合征的MRI表现

MRI in the Tethered Spinal Cord Syndrome

目的：评价MRI对脊髓栓系综合征的诊断价值。材料和方法：回顾性分析46例脊髓栓系综合征患者的MRI表现。结果：脊膜膨出及脊髓脊膜膨出／脂髓膨出20例（43.5％）。椎管内脂肪瘤／脂肪沉积18例（391％）。脊髓终丝增粗17例（37％），脊髓纵裂12例（21．6％）。脊髓圆锥空洞／软化灶8例（17％）。皮样囊肿2例（4．4％）。结论：MRI可明确显示引起脊髓栓系的原因，矢状位扫描可显示病变全貌，横轴位可准确显示脊髓空洞、圆锥或终丝粘连部位，对椎管闭合不全也能较好地显示，可以为手术治疗提供可靠依据。

Purose To evaluate diagnostic value of MRI in tethered spinal cord syndrome. Materials and methods: The MRI asppearances of 46 cases with tethered spinal cord syndrome were analyzed retrospectively. Results: There were 20 cases (43. 5 % )with meningocele 、 myelomeningocele or lipomgelomeningocele. 18 cases (39. 1 % ) with lipoma. 17 cases (37 % ) with tight fiflum terminal. 12 case (26.1 % )with diastematomyelia. 8 cases(17. 4 % ) with myelomalacia or cavitary leison in the conus. 2 cases (4. 4 % ) with epidermoid. Conclusion: MRI can directly display the cause of tethered spinal cord. Sagittal image can show the orerview of abnormality. Axial image can showconus cavitary leison and adherent part. MRI also can better display spinal dysrhaphia and provide reliable preoperative information.