摘要
目的:探讨磁共振成像在病毒性脑炎的早期诊断和预后评价中的价值。方法:回顾性分析经临床确诊的29例病毒性脑炎MRI资料,所有患者均行TSE T1W1、T2W1、液体衰减翻转恢复序列(FLAIR)序列及DWI序列扫描,其中13例行增强扫描。结果:29例患者中,病灶单发12例,多发17例;MRI主要表现为病灶T1W1呈略低信号,T2W1呈略高或高信号影,FLAIR和DWI呈均匀或不均匀性高信号。其异常信号改变在FLAIR和DWI上明显。增强扫描的13例病毒性脑炎中,5例出现斑片状及小点条状轻度强化。治疗1～3周后复查MRI,4例首次T2W1异常者恢复正常;其余病灶均有不同程度缩小,首次DWI异常者8例恢复正常,其余虽异常,但部分高信号区变为等信号或低信号。结论:MRI在病毒性脑炎诊断中有重要价值,有助于病毒性脑炎的早期诊断和预后评价。
Objective：To study the value of magnetic resonance imaging （MRI） in the early diagnosis and prognosis of viral encephalitis. Methods：MRI findings in 29 patients with viral encephalitis proved clinically were retrospeetively analyzed.The T1W1, T2W1 ,FLAIR and DWI sequences were performed in all cases and contrast enhancement scanning was performed in 13 cases.Results： The MRI manifestations of viral encephalitis showed relatively low or moderate signal intensity on T1W1 ,relatively high signal on T2W1 and significantly high intensity on FLAIR and DWI. Five of 13 eases with contrast enhancement seanning demonstrated slightly patch shape enhaneement.Of the follow-up cases,4 of the eases on T2W1 and 8 of them on DWI showed normal. Conclusion：MRI is one of the important methods in diagnosis of viral encephalitis ; it can provide important value for early diagnosis and prognosis.
出处
《现代医药卫生》
2008年第21期3175-3176,共2页
Journal of Modern Medicine & Health
关键词
脑炎
病毒性
磁共振成像
诊断和预后
Encephalitis
Viral
Magnetic resonance imaging
Diagnosis and prognosis
