【摘要】 报告１８例婴儿感染性蛛网膜下腔增宽，均具有外部性脑积水的典型ＣＴ表现。通过对６例ＣＴ复查动态观察确认，这是一种暂时性交通性脑积水（室外型），随病情演变可在短期内增多、减少或消失。笔者认为这对于颅内感染（特别是脑膜炎）的诊断是一个有意义的ＣＴ征象。对本病的发生机制、动态变化、ＣＴ表现与诊断进行了讨论。更多还原

【Abstract】 The authors reported 18 cases with infective enlargement of subarachnoid spaces in in-fants.All patients showed typical CT findings of external hydrocephalus.Suggested to be a form oftransitory communicating hydrocephalus(extraventricular type)based on observations with follow upCT in 6 cases. The condition could aggravate,improve or disappear in accordance with changes of pa-tient’s clinical condition in a relatively short time, The authors suggested that it is a meaningful CT find-ing in the diagnosis of intracranial infections(particular meningitis).The CT findings diagnosis and dy-namic changes of this condition were discussed.更多还原