目的探讨反面部正中矢状切面检查手法在胎儿胼胝体及小脑超声探查中的应用。方法对5000例孕妇行胎儿筛查,同时采用冠状切面、轴切面+反面部正中矢状切面检查手法和单纯冠状切面、轴切面检查手法。比较两种检查手法阳性检出率及筛查情况。结果两种检查手法颅内结构异常阳性检出率比较无统计学差异(P>0.05)。冠状切面、轴切面+反面部正中矢状切面检查手法检出胼胝体及小脑结构异常或发育不良12例,多于行单纯冠状切面、轴切面检查手法检出的3例(P<0.05)。结论在常规检查手法基础上加入反面部正中矢状切面检查手法,对颅脑常规切面超声检查有重要补充作用。 Objective To investigate the application of reverse sagittal median sagittal plane examination in fetal corpus callosum and cerebellar ultrasonography. Methods Fetal screening was performed on 5000 pregnant women. At the same time, coronal, axial and reverse sagittal plane sagittal and axial coronal planes were used. Compare the positive detection rate and screening of the two methods. Results There was no significant difference in positive detection rate of intracranial structures between the two methods (P> 0.05). Coronal section, axial section + reverse sagittal median sagittal examination of the corpus callosum and cerebellar structure abnormalities or dysplasia detected in 12 cases, more than the line simple coronal section, axial section examination detected 3 cases (P <0.05). Conclusions The method of checking the median sagittal section of the reverse face is added to the routine examination, which plays an important role in routine ultrasound examination of the brain.