恶性脑膜瘤的CT、MRI影像分析  

Imaging Analysis of Malignant Meningiomas by CT and MRI

作　　者：杜凤山[1] 蒋博民[1] 崔现成[1] 张乐[1] 王鹏[1] 

机构地区：[1]解放军第252医院放射科,河北保定071000

出　　处：《临床军医杂志》2008年第6期930-932,共3页Clinical Journal of Medical Officers

摘　　要：目的探讨恶性脑膜瘤的CT、MRI的影像学特征,以提高诊断正确率,为临床手术提供可靠依据。方法回顾性分析近几年来我院经手术病理证实的恶性脑膜瘤(35例)的CT、MRI资料。结果恶性脑膜瘤:(1)T2WI信号及密度不均29例(82.1%);(2)T1WI信号不均27例(77.1%);(3)边缘不规则21例(60%);(4)粗短的硬脑膜尾征19例(54.2%);(5)颅骨受侵8例(22.8%);(6)瘤内钙化14例(40%);(7)多发2例(占5.7%)。结论恶性脑膜瘤的影像学表现具有一定的特征性,定性诊断需要综合分析,注意与良性脑膜瘤的鉴别。Objective To improve the qualitative diagnosis rate and provide reliable basis for clinical treatment by studying MRI and CT features of malignant meningioma. Methods Retrospective analysis was done with CT and MRI imaging of malignant meningiomas of 35 cases which were verified by operation and pathological examination. Results （ 1 ） 29 cases （ 82.1% ） of malignant menhigiomas showed a mixed signal intensity on T2WI. （2） 27 cases （77.1%） showed an ashighor mixed signal intensity on T1WI. （3） 21 cases （60%） showed a nodular or lobular contour. （4） 19 cases （54.2%） showed a short irregular dural tail shape. （5） 8 cases （22.8%） showed an adjacent bony destruction. （6） 14 cases （40%） showed a calcification in the tumors. （7） 2 cases （5.7%） appeared to be multiple. Conclusion Meningiomas show characteristic presentation on CT and MRI imaging, and the accuracy of diagnosis can be elevated in combination with other clinical data. We should pay more attention to the differentiation between benign and malignant meningiomas.

关 键 词：脑肿瘤 恶性脑膜瘤 X线计算机体层摄影术 核磁共振成像 

分 类 号：R739.45[医药卫生—肿瘤]