目的 探讨CT与MRI在诊断病毒 性脑炎中的临床价值以及差异对比。方 法 选取2013年4月-2016年5月我院经脑 脊液常规检查确诊的41例病毒性脑炎患 者，以41例患者的CT和MRI影像学资料及 临床资料病例为基础，比较两个检查手 段在病毒性脑炎诊断方面的影像差异以 及诊断符合率。结果 41例病毒性脑炎患 者，在CT影像诊断中确定为病毒性脑炎 者32 例，误诊为其它疾病有4例，因影 像显示无异常漏诊者5例，阳性检测率为 78.0%。在MRI检查后，41例患者中正确 诊断出病毒性脑炎者38例，1例误诊，2 例漏诊，阳性检测率为92.7%。结论 CT 和MRI在诊断病毒性脑炎中均有典型的影 像判断特征，并且能提供病灶位置、形 态等特征参数，但MRI扫描检查对病毒性 脑炎的诊断更加准确，误诊和漏诊率更 低、阳性检测率更高，诊断符合率明显 要高于CT扫描，因此MRI的应用价值更 高，值得临床进一步推广。

Objective To investigate the diagnosis value and comparative analysis of CT and MRI in the diagnosis of viral encephalitis. Methods Retrospectively analyze clinical and CT + MRI data of 41 patients confirmed through cerebrospinal fluid routine examination in our hospital from April 2013 to May 2016, and compare image difference and diagnostic accuracy of the two inspection methods on viral encephalitis. Results Among 41 patients, 32 cases are identified as viral encephalitis through CT imaging, while 4 cases are misdiagnosed as other diseases, and 5 cases are missed due to no abnormal image display. The positive detection rate was 78.0%. While after MRI inspection, 38 patients are correctly diagnosed as viral encephalitis among 41 patients, 1 case is misdiagnosed and 2 cases are missed. The positive detection rate was 92.7%. Conclusion CT and MRI both have typical imaging characteristics of judgment in the diagnosis of viral encephalitis, which can provide the lesion location, shape and other characteristics parameters. However, MRI scanning in diagnosis of viral encephalitis turns out be more accurate and of lower misdiagnosis rate, whose diagnosis rate is significantly higher than CT scanning. Therefore, the application value of MRI higher and it is worthy of further promotion.