新生儿缺氧缺血性脑病:前10天的MRI和CT表现对比分析

目的：比较新生儿缺氧缺血性脑病前10d的MRI和CT征象，探讨更适合的检查方法。方法：回顾性分析和记录32例新生儿HIE的MRI和CT异常征象。结果：32例HIE患儿MRI均有不同程度的异常征象，主要表现为脑水肿28例，皮层下及深部脑白质斑点状和弯曲条状高信号（T1WI)15例，基底节及丘脑斑点状高信号（T1WI）9例，蛛网膜下腔出血或硬膜下血肿15例；CT仅27例有异常表现，以脑水肿为主要表现，仅见9例伴有蛛网膜下腔出血或硬膜下血肿。结论：新生儿HIE前10d MRI比CT能发现更多有价值的诊断征象，有助于早期准确诊断。

Hypoxic-ischemic encephalopathy in neonates:MRI vs CT findings with in the first 10 days

Objective:To investigate the optimal method of diagnosing hypoxic ischemic encephalopathy(HIE) in enonates during the first 10 days by comparing MRI to CT findings.Methods:The MRI and CT findings of HIE in 32 cases were reviewed retrospectively.Results:Abnormalitis were found in all of the 32 cases on MR images,by which the common signs were brain edema as a hypointensity area in white matter on T 1WI (n=28),streaklike and spotty hyperintensity in white matter(n=15),hyperintensity in the areas of basal ganglia and thalami(n=9),and subarachnoid or subdural hemorrhage(n=15).On the another hand,abnormalities were found in 27 cases on CT images,whose most common sign was brain edema.Conclusion:MR can find more useful signs than CT in HIE of neonates during the first 10 days of onset seizure,and the signs are helpful in early diagnosis.