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目的分析不同脑膜病变(不包括脑膜瘤导致的脑膜改变)MRI表现,探讨MRI对不同病因所致脑膜异常强化的诊断及鉴别诊断。方法资料完整的脑膜病变28例,MRI常规扫描后均加增强扫描(Gd-DTPA0.1mmol/kg)。对显示脑膜异常强化的病例进行回顾性分析。结果有7例MRI平扫显示脑膜有异常表现,增强扫描28例均有异常表现。按脑膜主要异常强化方式可以分为:硬脑膜-蛛网膜强化10例,软脑膜-蛛网膜强化15例,全脑膜强化3例。按病因不同分为:感染性脑膜炎8例,脑膜转移瘤12例,脑梗死2例,开颅术6例。结论不同脑膜病变MRI上表现形式不同,特别是MRI增强扫描。MRI检查有助于明确脑膜病变。全面分析MRI表现并结合临床对鉴别不同病因的脑膜病变具有重要作用。
Objective To analyze the MRI findings of different meningeal lesions (excluding meningeal changes caused by meningioma) and to explore the diagnostic and differential diagnosis of meningeal abnormalities caused by different etiologies. Methods Data of 28 cases of complete meningeal lesions, MRI scan after all enhanced scanning (Gd-DTPA0.1mmol / kg). Retrospective analysis of cases showing enhanced meningeal abnormalities. Results 7 cases of MRI showed abnormal manifestations of the meninges, enhanced scanning in 28 cases showed abnormalities. According to the main abnormal enhancement of meninges can be divided into: dural - arachnoid enhancement in 10 cases, pia mater - arachnoid enhancement in 15 cases, 3 cases of meningeal enhancement. According to different causes are divided into: 8 cases of infectious meningitis, meningioma in 12 cases, 2 cases of cerebral infarction, craniotomy in 6 cases. Conclusion Different forms of meningeal MRI manifestations on MRI, especially MRI enhanced scan. MRI examination helps to clarify the meningeal lesions. A comprehensive analysis of MRI manifestations combined with clinical evaluation of different causes of meningeal lesions has an important role.