SWI在早产儿缺血缺氧性脑损伤诊断中的临床应用

发布时间：2018-04-12 23:19

本文选题：磁敏感加权成像 + 缺血缺氧性脑损伤　；参考：《放射学实践》2015年07期

【摘要】：目的:探讨磁共振磁敏感加权成像(SWI)在早产儿缺氧缺血性脑损伤(HIBD)临床诊断及分度中的临床应用价值。方法:选取经临床诊断为早产HIBD患儿30例,采用Siemens 3.0T超导型MR扫描仪,所有病例均行头颅常规序列及SWI扫描。比较常规MRI序列与SWI间差异,以及SWI扫描对轻、重度HIBD颅内出血灶、静脉扩张检出率的差异,分别进行非参数检验及卡方检验。结果:SWI检出患儿颅内出血灶数量多,在出血灶大小、范围及边界清晰度显示方面,SWI均明显优于MRI常规序列。SWI检出的颅内异常扩张静脉在MRI常规图像上未见显示。轻、重度早产HIBD患儿的颅内出血灶检出率差异具有统计学意义(χ2=4.464,P=0.035);颅内静脉扩张检出率差异有统计学意义(χ2=4.649,P=0.031),且重度HIBD患儿颅内出血合并静脉扩张的检出率高于轻度HIBD患儿(χ2=5.714,P=0.017)。结论:SWI对早产儿HIBD颅内出血、深静脉扩张的检出率高于常规MRI序列,可对早产儿HIBD临床分度提供影像学依据。
[Abstract]:Objective: to evaluate the clinical value of magnetic resonance magnetic sensitivity weighted imaging (MRI) in the diagnosis and grading of HIBD in premature infants with hypoxic-ischemic brain injury (HIBD).Methods: 30 cases of preterm HIBD were selected and Siemens 3.0T superconducting Mr scanner was used. All cases were scanned by routine sequence of head and SWI.To compare the difference between conventional MRI sequence and SWI, and to compare the difference of SWI scan in detecting intracranial hemorrhage foci and venous dilatation in mild and severe HIBD, non-parametric test and chi-square test were performed respectively.Results the number of intracranial hemorrhage foci was more than that of MRI. The abnormal intracranial dilated veins detected by MRI were better than those detected by MRI routine sequence. The abnormal intracranial dilated veins were not shown on the conventional MRI images.Conclusion the detection rate of deep vein dilatation in HIBD of premature infants is higher than that of routine MRI sequence. It can provide imaging evidence for clinical grading of HIBD in premature infants.
【作者单位】：武汉大学中南医院放射科;
【分类号】：R445.2;R743.3

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