结核性脑膜炎的MRI诊断分析

目的:分析结核性脑膜炎的MRI表现特征。方法:回顾性分析12例结核性脑膜炎患者的MRI表现。结果:MR平扫可发现5例位于基底池的脑膜病灶;增强扫描有11例脑膜异常强化,伴脑膜、脑内粟粒型结核灶,6例结核性室管膜炎2例,颅神经受损1例,轻度脑膜炎患者无脑膜异常强化1例。结论:活动性结核性脑膜炎的MRI主要表现为基底池的脑膜强化局灶性或弥漫性强化,以软脑膜-蛛网膜型强化多见,可伴脑膜、脑实质内粟粒型结核病灶。

MRI Diagnosis of Tuberculous Meningitis

Objective:To study the MRI finding of tuberculous meningitis'.Methods:Retrospectively analyze the MRI findings of 12 tuberculous meningitis.Results:On uncontrasted T1WI and T2WI images,meningeal lesions in the basal cistern region were detected in 5 cases.Abnormal meningeal thickening and enhancement were found in 11 patients.Meningeal and cerebral miliary tuberculous foci were demonstrated in 6 cases.Ependymal involvement was found in 2 patients and cranial nerves were affected in 1 patient.No abnormal meningeal enhancement was detected in 1 mild cases.Conclusion:Enhanced lesions in the basal cistern region is the main MRI finding in tuberculous meningitis.Focal or diffuse meningeal enhanced may found in active tuborculosis,and miliary tuberculous.