脑膜瘤的MRI表现与诊断价值

MRI manifestations of meningioma and its diagnostic value

目的探讨脑膜瘤MRI特征,提高临床诊断水平。方法分析经病理证实的32例脑膜瘤患者的MRI检查结果。结果脑膜瘤在T1WI图像往往表现为较为均一的低信号20例(占62.5%)或等信号12例(占37.5%);在T2WI上呈稍高信号21例(占65.6%)或等信号6例(占18.8%);增强后浓密均一强化者20例(占62.5%)。结论 MRI对脑膜瘤诊断有较高的价值。

Objective To explor the MR imaging classification of Men ingiomas.Methods 32cases of Meningiomas which were operated and identified with pathological exam inations were analyzed retrospectively.Results On T1WI,20 cases（62.5%） were homogeneously hypointense or slightly hypointense;12 cases（37.5%） were isointense.On T2WI,21 cases（65.6%） were slightly hyperintense;6 cases（18.8%） were isointense.Conclusion The knowledge of characteristic MR imaging is helpful to preoperative diagnosis in the patients with Meningiomas.