足月新生儿缺氧缺血性脑病一周内CT分度诊断指标的研究

目的探讨1周内正常新生儿与足月新生儿缺氧缺血性脑病患儿（HIE）颅脑CT影像学特点。方法对108例正常新生儿和173例HIE患儿行颅脑CT扫描，取特定的扫描层面及位置，双侧对称检测脑实质密度的CT值。结果正常新生儿灰质密度CT值范围20—28Hu；HIE轻度CT值范围17—20Hu，中度14—17Hu，重度14Hu以下。结论出生1周内正常新生儿与HIE患儿颅脑CT值测量指标对HIECT诊断具有重要意义。

The study of CT scoring target in neonates hypoxic-ischemic encephalopathy

objective To study the CT features and its corretation of normal neonates and neonatal hypoxic-ischemic encephalopathy.(HIE).Methods 108 cases of normal neonate brains were scanned,the CT ralue of bilateral cerebral of rehted slices.On this basis,a quantitative classification criteria was made for 173cases of neonatal HIE.Results The CT value normal neonates of were ranging from 27～39 Hu for cerebral cortex and from 20 to 28 Hu for cerebral medulla.Neonates with HIE could be classified into three degrees aecording to CT value(17～19 Hu for gentle degree,14～16.9 Hu for moderate degree and below 14 Hu for gerere degree).Condusion The measuring CT value of cerebral cortex and medulla for normal neonates and neonatal HIE can play a significant role in clinical diagnosis of HIE.