足月新生儿动脉缺血性脑梗死早期MRI特点与不同MRI序列的新生儿动脉缺血性脑梗死诊断价值研究

Early MRI characteristics of full-term neonatal arterial ischemic stroke and diagnostic value research of neonatal arterial ischemic stroke by different MRI sequence

目的探究足月新生儿动脉缺血性脑梗死(NAIS)早期磁共振成像(MRI)特点与不同MRI序列的NAIS诊断价值。方法回顾性分析16例MRI确诊为NAIS患儿的临床资料及MRI资料。结果 16例患儿在常规的MRI检查中13例T1WI信号异常;16例T2WI信号异常。16例患儿在首次磁共振扩散加权成像(DWI)检查中均出现了异常的信号。结论常规MRI检查可以帮助了解NAIS的病情,DWI检查可以早期判断NAIS。NAIS早期磁共振血管造影(MRA)大多数显示病区大脑中动脉(MCA)分支增多,与成人的脑梗死血管狭窄或完全闭塞不同。

Objective To investigate early magnetic resonance imaging（MRI） characteristics of fullterm neonatal arterial ischemic stroke（NAIS） and diagnostic value research of NAIS by different MRI sequence. Methods A retrospective analysis was made on clinical data and MRI data in 16 diagnosed NAIS infants by MRI. Results Among the 16 cases, there were 13 cases with abnormal T1 WI signal in conventional MRI examination and 16 cases with abnormal T2 WI signal. All the 16 cases had abnormal signal in the first examination by diffusion weighted imaging（DWI）. Conclusion Conventional MRI examination can show condition of NAIS, and DWI examination can provide early diagnosis of NAIS. Early magnetic resonance angiography（MRA） of NAIS mainly shows increased middle cerebral artery（MCA） branches, which is different from hemadostenosis or vascular occlusion in adult cerebral infarction.