Accuracy of ultrasonography in diagnosis of fetal central nervous system malformation

BACKGROUND Prenatal examination is an important measure for the screening and diagnosis of fetal malformations.AIM To investigate the accuracy of ultrasonography in the diagnosis of fetal central nervous system(CNS)malformations.METHODS One hundred and thirteen pregnant women suspected of having fetal CNS malformations were examined at our hospital from December 2018 to October 2020 using two-dimensional ultrasonography and three-dimensional ultrasonography,respectively.RESULTS According to the pathological results,there were 79 cases of CNS malformations and 34 cases of non-CNS malformations among the 113 pregnant women suspected of having fetal CNS malformation.Fifty-one cases of CNS malformation and 26 cases of non-CNS malformation were detected by two-dimensional ultrasonography,and 73 cases of CNS malformation and 30 cases of non-CNS malformation were detected by three-dimensional ultrasonography.The diagnostic sensitivity(92.41%)and accuracy(91.15%)of three-dimensional ultrasonography were higher than those of two-dimensional ultrasonography(64.56% and 68.14%,respectively)(P=0.000).The specificity of three-dimensional ultrasonography(88.24%)was higher than that of two-dimensional ultrasonography(76.47%);however,the difference was not significant(P=0.203).CONCLUSION Three-dimensional ultrasonography has high application value in the diagnosis of fetal CNS malformations.In addition,the image quality is clear,and the diagnostic sensitivity and accuracy are high.

快速MRI联合母体血清标志物诊断孕中期胎儿CNS发育畸形

本文探讨快速磁共振成像(MRI)联合母体血清标志物检测诊断孕中期胎儿中枢神经系统(CNS)发育畸形的应用价值。选取112例孕中期疑似胎儿CNS发育畸形的孕妇作为研究对象,均进行MRI检查和母体血清标志物检测。结果显示,胎儿CNS发育畸形发生率为18.75%;快速MRI检出19例胎儿CNS畸形,其中真阳性18例;胎儿CNS畸形母体孕中期血清甲胎蛋白(AFP)、游离β-人绒毛膜促性腺激素(Free-β-hCG)水平高于未畸形母体,妊娠相关血浆蛋白A(PAPP-A)、游离雌三醇(uE3)水平低于未畸形母体(P<0.05);母体血清AFP、Free-β-hCG、PAPP-A、uE3水平均为孕中期胎儿CNS畸形独立影响因素(P<0.05);快速MRI联合母体血清AFP、Free-β-hCG、PAPP-A、uE3水平诊断孕中期胎儿CNS发育畸形的曲线下面积(AUC)为0.961。快速MRI联合母体血清标志物检测在孕中期胎儿CNS发育畸形诊断中具有较高的应用价值。