病毒性脑炎的CT诊断

目的：进一步认识病毒性脑炎的CT特征，以提高CT诊断的准确性，方法：回顾性分析19例病毒性脑炎的临床及CT资料，其中单纯疱疹病毒（HSV）脑炎13例，EB病毒（EBV）脑炎6例，均行CT平扫，16例行增强扫描，结果：13例HSV脑炎均累及颞叶和脑岛，单侧受累者11例，双侧2例，6例EBV脑炎均累及双侧基底节核团，其中4例累及双侧壳核，随访病变消失，另2例累及双侧豆状核和尾状核，随访仅见尾状核病变消失。结论：HSV脑炎及EBV脑炎的CT表现具有一定特征性，CT对判断EBV脑炎的预后有一定价值。

CT diagnosis of viral encephalitis

Objective:To make a further recognition of CT characteristics of viral encephalitis to improve its diagnostic accuracy.Methods:The clinical materials and CT findings of 19 cases with viral encephalitis were analyzed retrospectively.Those patients included 13 of herpes simplex viral(HSV) encephalitis and 6 of Epstein Barr viral(EBV) encephalitis.Plain CT scans were performed in all patients and an additional enhanced CT scans in 16.Results:HSV encephalitis of 13 cases involved unilateral temporal lobe and insula in 11 cases and bilateral in 2.EBV encephalitis of 6 cases involved bilateral basal ganglia nucleuses,and additional bilateral putamen nucleuses were involved in 4 cases,which became normal on follow up.In another 2 cases,bilateral lenticular and caudate nucleuses were involved,but only caudate nucleuses involved became normal on follow up.Conclusion:HSV and EBV encephalitis have certain CT features. Moreover ,CT is valuable for evaluating the prognosis of EBV encephalitis.