中文摘要：

目的探讨脊膜瘤的MRI诊断及相关临床分析。方法回顾性分析经手术治疗确诊的75例脊膜瘤病人的MRI检查及临床资料。结果75例均为单发，颈椎20例，胸椎53例，腰椎2例。72例发生在椎管内髓外硬膜下，3例发生在硬膜外。椎管内背侧60例，腹侧12例，3例累及椎管内外。圆形及卵圆形50例（占66．7％），宽基底丘状22例（约占29．0％），哑铃状3例（约占4．3％）。1例哑铃状肿瘤最大，大小约4．0cm×3．5cm×1．5cm。最小肿瘤直径约1．5cm。FSET1WI以等低信号为主，T2WI以等或略高信号为主。增强扫描，绝大多数肿瘤呈明显均匀强化，27例出现“硬膜尾征”。病人术前主要临床表现为肢体麻木无力，行走不稳。术后随访65例，症状明显好转组50例，不明显好转或加重组15例。结论通过MRI检查，绝大多数脊膜瘤可以正确诊断。

英文摘要：

Objective To investigate MR imaging diagnosis and clinical analysis of spinal meningioma. Methods MRI and clinical data in 75 patients with spinal meningiomas confirmed by operation were retrospectively analysed. Results The lesions in all patients were single and located in cervix in 20 ,thoracic in 53 and lumbus in 2. 72 foci occurred in the spinal subdural extramedullary and 3 in the epidural. 60 lesions lied at dorsal spinal canal, 12 lesions lied at ventral spinal canal and 3 lesions involved both inside and outside the spinal canal. 50 loci（ 66.7 % ）appeared as round or oval, 22 loci（ 29.0 %）were of wide base dome, and 3 lesions（ 4.3%）were dorabell. The size of maxmimum tumor was 4.0 cm × 3.5 cm × 1.5 cm and the minimum diameter was 1.5 cm. Meningiomas mainly showed isointensity or slightly low-signal intensity on FSE T1WI, and isointensity or slightly hypeintensity on T2WI. After enhanced scan, most tumors showed apparent homogeneous enhancement, and the ＂dural tail sign＂ was found in 27 cases of tumor. Preoperatively, the patient＇s symptoms included limb numbness and weakness,unsteady gait. After surgey,the symptoms improved in 50 eases,and no significant improvement in 15 cases. Conclusion The vast majority of spinal meningiomas can be diagnosed correctly by MRI.