摘要
目的：探讨恶性脑膜瘤的ＭＲＩ表现。材料与方法：手术病理证实的恶性脑膜瘤１９例，所有病例均行ＭＲ检查，其中部分病例还做了ＣＴ检查。结果：Ｔ１加权像病灶以等、低混杂信号多见（１７／１９），Ｔ２加权像均表现为均匀或混杂高信号；增强检查，肿瘤以不均匀强化最常见（１６／１９）；肿瘤边缘不规则，呈“蕈”形，肿瘤部分或全部境界模糊。结论：恶性脑膜瘤ＭＲＩ表现具有一定特异性，但须与良性脑膜瘤。
Objective: To report the MRI features of malignant meningiomas.Materials and Methods:The histopathologic study were performed in 19 cases with malignant meningioma. All patients were evaluated with MRI, meanwhile, CT scan was also executed in 11 cases.Results:The tumor showed isoor hypointensity on T1weighted image, hyperintensity on T2weighted image; MRI findings also included: Irregular outline with mushroomlike, incomplete capsule and inhomogenous contrast enhancement in lesion.Conclusions: A lot of significant signs of malignant meningiomas could be found on MRI, but it is to differentiate malignant meningiomas from benign meningiomas, malignant glioma and solitary matastasis.
出处
《临床放射学杂志》
CSCD
北大核心
1998年第4期199-201,共3页
Journal of Clinical Radiology
