成人正常鞍区脑膜的MRI

MRI manifestations of adult normal cerebral meninges in the sellar region

目的 :评价成人正常鞍区脑膜的MRI表现。方法 :选择因突发听力丧失 ,或因健康体检而行头颅MRI平扫和增强检查者共29例 ,分别观察记录这29例的正中矢状面图像中平扫T1WI、T2WI和增强T1WI硬脑膜的显示情况。结果 :MRI平扫T1WI在鞍底下后方见到硬脑膜者5例 (17 24 %)、T2WI仅7例 (24 14 %)在鞍隔显示硬脑膜 ,增强后硬脑膜分别于筛板处显示3例 (10 34 %) ,蝶骨面见到8例 (27 59 %) ,交叉沟与鞍结节25例 (86 21 %) ,鞍隔25例 (86 21 %) ,鞍底29例 (100 %)。结论 :本研究显示了成人正常鞍区脑膜的MRI表现 ,这在对鞍区病变的诊断中 ,具有重要的参考价值。

Objective:To evaluate the MRI manifestations of adult normal cerebral meninges in the sellar region.Methods:29patients with sudden hearing loss or healthy physical examination selected fromour hospital were examined by using MRI unenhanced and enhanced scanning in skull.The median sagittal MRI imaging of duramater was recorded in unenhanced T 1 WI,T 2 WI and enhanced T1WI respectively.Results:On the unenhanced MRI,the duramater of the inferior-posterior sellar floor was visible in5cases(17.24%)in T 1 WI,that of the sellar diaphragm was identified in7cases(24.14%)in T 2 WI.On the enhanced MRI,the duramater of the cribriform plate was visible in3cases(10.34%),the sphenoidale plane was visible in8cases(27.59%),the chiasmatic sulcus and sellar tuberculum were identified in25cases(86.21%),the sellar diaphragm was identified in25cases(86.21%),the floor of sella was seen in29cases(100%).Conclusion:This study demonstrates the MRI manifestations of adult normal cerebral meninges in the sellar region,it has an importment reference value in diagnosing the sellar region diseases.