目的探讨脑囊虫病的磁共振表现及误诊原因,提高对脑囊虫病的认识。方法经病理活检或临床确诊的曾经误诊的脑囊虫病6例,回顾分析其MR影像学表现。结果多发病灶4例、12个,单发病灶2例,均位于额顶叶皮髓质交界区,5个病灶T1WI囊液信号高于脑脊液,T2WI呈高信号,9个病灶T2WI显示囊内容物呈低信号,或高低混杂信号。病灶周围均可见水肿带,并呈环形强化。4例误诊为转移瘤,2例误诊为脑脓肿。结论MR是诊断脑囊虫病的重要检查方法,重视流行病学,提高对MR征象的认识,可以避免误诊。

Objective To discuss the MRI manifestation of pial neurocysticercosis.Methods Twenty-eight patients with pial neurocysticercosis verified by clinic were retrospectively studied.All patients were performed with plain MR scan and contrast enhancement.Results There were 120 lesions found in subarachnoid space.Typical MRI manifestations like parenchymal neurocysticercosis were found in lesions located in the sulcus and longititudinal fissure cistern.They could be identified as active stage,degenerative and necrotic stage,calcific stage.The MRI manifestations of the lesions located in lateral sulcus and basal cisterns were atypical and could be divided into larger cysts and racemose.Conclusion The manifestations of pial neurocysticercosis are complicated and various.It is important to recognize its typical and atypical manif1estations corretivelyin in diagnosis and therapy.