脑膜瘤磁共振成像诊断和相关病理

目的 探讨脑膜瘤磁共振成像表现特点及其相关病理类型.方法 回顾性分析38例经手术病理证实的脑膜瘤MRI表现,从其信号特点、肿瘤-脑组织界面、瘤周水肿、脑膜尾征、病灶增强后MRI信号均匀度等方面进行归纳、分析,并对照观察相关病理学资料.结果 脑膜瘤绝大多数T1WI呈等信号,T2WI呈稍高信号和混杂信号,脑膜尾征具有诊断价值.结论 脑膜瘤MRI征象有较高的敏感性和特征性,绝大多数能在术前作出正确诊断.

MRI diagnosis of meningioma and related pathology

Objective To assess the correlation between the MRI features of meningioma and related pathology. Methods Thirty-eight cases of meningioma confirmed by surgery and pathology were reviewed, and their MRI features of the meningioma and histological type were analyzed, including the signal appearance of the tumor, tumorbrain interface status, peritumorous edema, tail sign, and the signal uniformity after enhance. Results MRI signal features of meningioma included low SI on T1 W images, high and mixed SI on T2 W images, and there was diagnostic values of tail sign. Conclusion The MRI features of meningiomas have high sensitivity and characteristic feature, and most of meningiomas could be diagnosed before operation according to MRI features.