MRI征象在恶性脑膜瘤术前诊断中的价值

Value of MRI features in preoperative diagnosis of malignant meningioma

目的:探讨MRI征象在恶性脑膜瘤术前诊断中的价值。方法:回顾性分析23例恶性脑膜瘤的MRI征象,并随机抽取同期34例良性脑膜瘤作为对照。结果:分叶征、囊变坏死、瘤脑界面、瘤脑界面的边缘、T1WI信号、信号不均匀性、强化不均匀性、强化程度、脑膜尾征的有无及形态与脑膜瘤良、恶性相关。结论:恶性脑膜瘤的MRI表现具有一定的特征性,评价某些MRI征象对恶性脑膜瘤的术前定性诊断具有重要意义。

Objective： To investigate the value of MRI features in preoperative diagnosis of malignant meningioma. Methods： MRI findings in 23 patients with malignant meningioma were analyzed retrospectively, and 34 cases of benign meningiomas in the same period were randomly selected as control. Results： Lobulation, cystic necrosis, tumor-brain interface, tumor-brain interface rim, signal intensity in T1WI, signal inhomogeneity, inhomogeneous contrast enhancement, the degree of contrast enhancement and dural tail sign are related to the gradings of meningioma. Conclusion： Malignant meningiomas do have characteristic MRI features, to evaluate some MRI features has important significance in qualitative diagnosing malignant meningioma before operation.