论文部分内容阅读
目的探讨儿童重症病毒性脑炎磁共振(MRI)影像的特点及其临床意义。方法回顾分析福建医科大学附属第一医院2004-06—2005-10经临床确诊的30例儿童重症病毒性脑炎MRI及临床资料,所有病例常规做SE序列轴位、矢状位T1WI、T2WI,必要时加扫T2WI冠状位;6例加扫弥散加权成像(DWI)。结果25例MRI影像发现异常,主要表现为T1WI呈稍低或等信号,T2WI呈稍高异常信号,DWI呈明显高信号,表观弥散系数(ADC)值降低。结论MRI可早期发现病毒性脑炎,是病毒性脑炎影像学检查的首选方法,对病毒性脑炎的定位、早期诊断、病情严重性及预后评价具有重要价值;DWI比T2WI显示病变更清晰且能作定量评价;MRI表现病灶累及范围越广泛,则病情越重,预后越差。
Objective To investigate the characteristics and clinical significance of magnetic resonance imaging (MRI) in children with severe viral encephalitis. Methods A retrospective analysis of the first affiliated hospital of Fujian Medical University 2004-06-2005-10 clinically diagnosed 30 cases of children with severe viral encephalitis MRI and clinical data, all cases routinely do SE sequence axial, sagittal T1WI, T2WI, T2WI coronal scan was performed if necessary; 6 cases were treated with DWI. Results MRI findings of 25 cases were abnormal. The main manifestations were slightly lower or equal signal on T1WI, slightly higher signal on T2WI, obviously higher signal on DWI, and lower apparent diffusion coefficient (ADC). Conclusion MRI can detect viral encephalitis early and is the preferred method of imaging for viral encephalitis, which has important value for the localization, early diagnosis, severity of illness and prognosis of viral encephalitis. DWI shows more clearly than T2WI And can be used for quantitative evaluation. The more extensive the range of MRI manifestations, the more severe the disease is and the worse the prognosis is.