摘要
目的 研究病毒性脑炎患者头部核磁共振 (MRI)表现 ,以提高该病的早期诊断及判断预后。方法 回顾分析 5 3例病毒性脑炎 (男 30例 ,女 2 3例 ,平均年龄 31岁 ) ,其中 5 0例行头 CT检查 ,46例行头部 MRI检查 ,3例行头 MRI增强检查 ,10例行快速液体衰减反转回复 (FL AIR)检查。结果 行头 MRI检查的 46例中 ,有 16例脑内可见单发或多发病灶 ,主要位于皮层、皮层下、小脑半球等处。以颞叶受累最多见 (8例 ,占 6 1.5 %)。MRI可表现为长 T1 长 T2 信号。FL AIR可以更清晰地发现病灶。其中单纯疱疹病毒性脑炎具有特征性 MRI表现。结论 MRI优于 CT,能为病毒性脑炎的临床诊断提供重要依据。 FL AIR技术有助于更清晰的发现病灶 ,从而有助于该病的早期诊断。
Objective To investigate the magnetic resonance imaging(MRI)appearance of patients with viral encephalitis in order to facilitate its early diagnosis and judgement of prognosis.Methods 53 cases of viral encephalitis(30 male,23 female, mean age 31 years) were analyzed retrospectively,50 of which were examined with CT,46 MRI,3 postcontrast and 10 fluid attenuated inversion redocery (FLAIR).Results Of the 46 patients examined with MRI examination, multiple or single lesion located mainly in cortex, subcortex,cerebellum and so on was found in 16 cases,and the temporal lobe was mostly involved(8 cases,61.5%) because long T 1 and long T 2 signals on MRI were found there.Focuses were found more clearly with FLAIR technique. Characteristic appearance was found in herpes simplex encephalitis by MRI.Conclusion MRI was superior to CT because it could provide more important evidence for clinical diagnosis of viral encephalitis. FLAIR technique was helpful to early diagnosis of viral encephalitis because the leisions could be seen more clearly by it.
出处
《中国误诊学杂志》
CAS
2002年第1期50-52,共3页
Chinese Journal of Misdiagnostics
关键词
病毒性脑炎
诊断
磁共振成像
Encephalitis,viral/diagnosis
Magnetic resonance imaging
Retrospective studies
