脑弥漫性轴索损伤的CT诊断（附40例分析）

在急性脑外伤患者的ＣＴ片研究弥漫性轴索损伤的ＣＴ征象，目的是为ＤＡＩ的诊断提供影像学依据。回顾性分析经临床确诊的４０例ＤＡＩ患者的早期ＣＴ表现，结合文献提出ＤＡＩ的ＣＴ诊断标准：脑白质内单发或多发无占位效应的小出血灶，中线结构无移位；蛛网膜下腔出血或脑池内出血；脑室内出血；弥漫性脑肿胀。

CT Diagnosis of Diffuse Axonal Injury:Analysis of 40 Cases

The purpose of this aticle is to study the CT signs in diffuse axonal injury(DAI)of acute brain injury.Materials and Methods:CT signs of 40 cases of DAI confirmed clinically were reviewed.The criterion of CT diagnosis consists:Of the presence one or more hemorrhagic lesions(less than 2cm in diameter)at white matter without space occupying effect,and no middle line structure deviation;subarachnoid hemorrhage(SAH)or intracerebral cisterna hemorrhage.intraventricular hemorrhage and acute diffuse brain swelling.Results:CT scans of 40 cases with DAI of early phase showed one or more small hemorrhage lesions less than 2cm in diameter at cerebralhemisphere 18 cases, basal nuclei 3,copus collosum 2,thalamus 1,SAH and/or intracerebral cisterna hemorrhage 16 and intraventricular hemorrhage 9.All cases showed acute brain swelling.Conclusion:It is believed that the criterion of DAI in CT imaging were corresponded to that of in clinic. CT can provide reliable evidence for clinical diagnosis of DAI.