脑裂头蚴病的MRI诊断

目的分析、探讨脑裂头蚴病的脑部MRI征象。方法搜集经临床确诊的脑裂头蚴病15例，回顾性分析其脑部的MRI征象。结果15例脑裂头蚴病患者脑内单发或多发不对称病灶共21个，顶叶8个，额叶6个，颞叶2个，枕叶2个，基底节、小脑半球及桥脑各1个。病灶MRI表现为T1WI呈稍低信号，T2WI呈较高信号，病灶周围脑实质可见大片状水肿。增强扫描10例，病灶均显示强化，大部分呈环形、串珠状或匐行管状强化。6例MRI复查发现2例病灶强化的位置及形态有改变。结论脑裂头蚴病的脑部MRI表现具有一定的特征性，增强扫描及追踪复查至关重要。

MRI diagnosis of cerebral sparganosis

Objective To analyze and evaluate the characteristics of cerebral sparganosis on MRI. Methods MRI appearances of 15 cases of cerebral sparganosis proven by pathology or serological test were retrospectively studied. Results A total of 21 lesions were found, some of them were single and some were multiple but asymmetrical. 8 lesions were found in parietal lobe, 6 in frontal lobe, 2 in temporal lobe, 2 in occipital lobe, 1 in basal ganglia, 1 in cerebellar hemisphere and 1 in pens. The lesions carried slightly hypointense on TI-weighted images and moderate hyperintense on T2-weighted images. Most lesions showed perilesional brain parenchyma edema. Enhanced MRI was performed in 10 cases, and all of them demonstrated abnormal enhancement such as peripheral ring-type, tortuous beaded shape or serpiginous tubular shape enhancement. Follow-up MR images in 6 cases were analyzed, and the location and shape of the lesions changed in 2 of them. Conclusion There are some specific MRI findings on cerebral sparganosis. Enhanced MRI and follow-up examination are important for the diagnosis of cerebral sparganosis.