新生儿缺氧缺血性脑病的CT扫描技术

Neonatal hypoxic-ischemic encephalopathy the hybrid CT scan technology

目的探讨新生儿缺氧缺血性脑病(HIE)的CT表现。方法对326例临床诊断为HIE及颅内出血的新生儿进行头颅CT扫描,主要采用5 mm×5 mm层厚、间距法;部分病例选择第2~8层采用5 mm×5 mm层厚、间距,其他层面采用10 mm×10 mm层厚、间距的方法进行扫描。并对CT表现进行分析。结果本组241例表现出不同程度的HIE,累及额叶最为多见,共225例,其中单纯累及额叶45例,累及2个以上脑叶180例;多脑叶弥散性低密度影16例;合并脑实质及蛛网膜下腔小量出血86例(大面积出血病例被除外)。分度为Ⅰ级35例,Ⅱ级157例,Ⅲ级36例,Ⅳ级13例。结论 CT值下降是诊断HIE的重要依据之一。

Objective In neonatal hypoxic ischemic encephalopathy（HIE）CT.Methods The clinical diagnosis of 326 cases were examined by CT scan and HIE and neonatal intracranial hemorrhage in newborn,mainly uses the 5X5mm layer thickness,spacing method,in some cases second^8 layer using 5 mm×5 mm layer thickness,spacing,and other aspects of the 10 mm×10 mm layer thickness,spacing method scan.And the CT features were analysed,finally 241 cases showed different degrees of HIE.Results This group of 241 cases involving the frontal lobe is the most common,a total of 225 cases,of which only involving the frontal lobe in 45 cases,180 cases involving more than two lobes of the brain;16 cases of diffuse low density multi-lobes of the brain;the combined brain parenchyma and cobwebsmall subarachnoid hemorrhage 86 cases（cases of major hemorrhage were excluded）.Indexing grade Ⅰ 35 cases;157 cases of grade II;36 cases of grade Ⅲ;13 cases of grade Ⅳ.Conclusion The decrease of CT is one of the important basis for the diagnosis of HIE.