新生儿缺氧缺血性脑病的MRI表现

目的:探讨新生儿缺氧缺血性脑病(HIE)的MRI表现。材料和方法:对87例临床确诊为HIE的患儿行MRI扫描,并对其MRI表现进行分析。结果:87例HIE患儿中,74例(85.1%)可见皮层、皮层下及深部白质T1WI迂曲条状、点状高信号;69例(79.3%)显示基底节、丘脑T1WI异常高信号及内囊后肢高信号消失;62例(71.3%)出现弥漫性脑水肿;58例(66.7%)可见颅内出血,包括蛛网膜下腔出血、硬膜下出血、脑室内出血及脑实质出血;19例(21.8%)可见侧脑室周围白质软化;7例(8.0%)可见脑梗死。结论:MRI在HIE正确诊断和早期治疗中具有重要临床价值。

MRI Features of Neonatal Hypoxic-ischemic Encephalopathy

abstract: To study the MRI features of neonatal hypoxic-ischemic encephalopathy. Materials and Methods: Eighty-seven cases of neonatal hypoxic-ischemic encephalopathy diagnosed clinically were examined by 2.0T MR system, then the MRI features were analysed. Results: On T1-weighted images, multiple streaklike and spotty hyperintensity lesions in the cortex, subcortical or perivertricular white matter were seen in 74(85.1%), abnormal hyperintensity in the areas of basal ganglia and thalamus and loss of hyperintensity at posterior limb of the internal capsule in 69(79.3%), diffuse cerebral edema in 62(71.3%),intra cranial hemorrhage including subarachnoid hemorrhage, subdural hemorrhage, intraventricular hemorrhage and cerebral hemorrhage in 58(66.7%), perivertricular leukomalacia in 19(21.8%), cerebral infarction in 7(8.0%). Conclusion: MRI is of great value in diagnosing neonatal HIE.