脑内囊虫病的磁共振诊断(附9例分析)

目的 描述脑内囊虫病的MRI的表现，探讨该病变的病理学改变特征及MRI的诊断价值。方法 对8例经临床及实验室检查证实及1例经手术病理证实的脑内囊虫病进行了MRI检查，对其MRI影像学表现特征进行了回顾性分析。结果 MR显示8例均为多发小病灶，1例为单发病灶，病灶位于四脑室。其中6例病灶位于脑实质，2例病灶位于脑实质及四叠体池。病灶在T1WI上圆形或卵圆形低信号，T2WI上呈高信号，部分囊壁上可见等信号的头节影。经钆喷替酸葡甲胺(GD-DTPA)增强后部分虫体有环形强化，其中有2例各有1个病灶呈结节状强化，病灶周围见明显水肿。结论 磁共振不仅能正确诊断和发现脑内囊虫病而且能正确描述囊虫病的病理特点。

MRI findings of intracranial cysticercosis

Objective To describe the MRI manifestations of intracranial cysticercosis and to discuss the pathologic feature and MRI diagnostic value. Methods Eight cases of intraeranial cysticereosis conformed by lab (n=8) and pathology (n=1) were studied with MR imaging. The MRI imaging features were retrospectively analyzed. Results MRI imaging demonstrated multiple small lesions in eight cases, and one lesions in forth ventricle. Lesions of 6 cases were localized in brain parenchymal, 2 cases in brain parenchymal and Quadrigeminal cistern. On T1WI, the lesions showed rounded low singal, On T2WI the lesions showed high signal, Some of the lesions show eccentric mural nodule (the invaginated scolex). Of the nine cases with GD-DTPA administration, the ring enhancement was seen in some of the lesions. Each of the two cases showed nodular enhancement with the around vasogenic edema. Conclusion MRI is a reliable method for demonstrating the pathology and a valuable tool for the diagnosis of intracrinal cystieercosis.