【摘要】 目的研究脑裂头蚴病的CT和MRI特点。资料与方法回顾性分析25例确诊为脑裂头蚴病患者的临床、CT和MRI资料:其中15例行MRI检查,2例行CT检查,余8例既行CT又行MRI检查。结果所有病例均可见脑白质水肿和变性。单侧发病24例;单侧侧脑室扩大22例。MRI冠、矢状位增强扫描图像上可见"隧道征"10例,串珠样强化13例。CT增强图像上见单环形强化2例。6例CT见"针尖"样钙化,MRI仅见3例。6例术前病例随访中发现病灶位置改变。18例行开颅术,7例行立体定向靶穿刺术治疗;5例发现有活虫,呈白色线样并有缓慢蠕动。结论脑裂头蚴病具有明显的影像学特征,如"隧道征"、串珠样强化、游走性。若结合临床资料和实验室检查(酶联免疫吸附试验),脑裂头蚴病的诊断并不困难。更多还原

【Abstract】 Objective To investigate the CT and MR features of cerebral sparganosis. Materials and Methods The clinical data,laboratory tests,CT and MR findings of 25 patients with cerebral sparganosis were retrospectively studied. Fifteen patients underwent MR scan,two patients underwent CT scan,the remaining eight patients underwent both CT and MR scan. Results The degeneration and edema of cerebral white matter showed in all patients. All cases except one had unilateral lesions. Twenty-two patients had ipsilateral ventricular dilatation. On postcontrast coronal and sagittal MR images,tunnel-sign was demonstrated in ten patients. Thirteen cases showed beaded-like enhancement on the MR images. Solitary ring enhancement was showed on CT images in 2 patients. Punctate calcifications were showed in 6 patients on the CT images,but only in 3 on the MR images. On the preoperative follow-up examination,lesion location changed in 6 patients. Finally,18 patients performed craniotomy and 7 patients performed stereotactic targeting biopsy. In 5 patients,an intact live,whitish,stringlike worm was found. The dead or degenerated worms were found in other 20 patients. Conclusion Cerebral sparganosis had typical imaging characteristic,such as tunnel-sign,beaded-shaped enhancement and focal transmigration. MR is superior to CT in demonstrating the extent,number of lesions except punctat calcifications otherwise. Combined with clinical data and enzyme-linked immunosorbent assay (ELISA),the definitive diagnosis of cerebral sparganosis was not difficult.更多还原