摘要
目的评价CT和MRI在诊断颅底鼻内型脑膜脑膨出中的价值。方法回顾性分析7例经手术和病理证实的颅底鼻内型脑膜脑膨出的CT与MRI表现。结果7例颅底鼻内型脑膜脑膨出中有1例合并脑积水。4例行CT和MRI扫描,2例仅行CT扫描,1例仅行MRI检查。冠状位CT扫描见筛骨骨质缺损,MRI见鼻腔内囊状异常脑脊液信号,并向上与颅内蛛网膜下腔直接相通,其内有少量脑组织信号。结论CT和MRI能正确诊断该型脑膜或脑膜脑膨出,CT显示颅底骨质缺损大小、部位优于MRI,MRI可清楚显示疝出物及其与脑底的关系。
Objective: To evaluate the values of CT and MRI in diagnosing skull basal intranasal encephalomeningocele.Methods: CT and MRI features of 7 cases confirmed by operation and pathology were retrospectively analyzed. Results: CT and MRI demonstrated that all cases were skull basal intranasal encephalomeningocele and 1 case was accompanied with hydrocephalus. MRI demonstrated that was herniation of glial tissue and meninges into the nasal cavity, the signals were abnormal cerebrospinal fluid signal and it was attached to intracranial subarachnoid cavity. Conclusions: CT and MRI could diagnose encephalomeningocele correctly. CT could clearly manifest the size and location of bony defect of the skull base, and location of the hernia. MRI was better than CT in displaying the contents of hernia, and the relationship between hernia and the skull base. Coronal and axial imaging planes with MR T1- and T2-weighted sequences are required to demonstrate the hernia and its intracerebral connection.
出处
《中国临床医学影像杂志》
CAS
2004年第1期8-9,34,共3页
Journal of China Clinic Medical Imaging
