超声与MRI联合评估胎儿颅后窝池增宽的临床应用-东南大学学报医学版

超声与MRI联合评估胎儿颅后窝池增宽的临床应用

单位：1. 南京市妇幼保健院超声科, 江苏南京 210004;
2. 南京市妇幼保健院放射科, 江苏南京 210004

分类号：R714.53

出版年·卷·期（页码）：2017·36·第一期（62-66）

摘要：

目的：探讨超声联合核磁共振成像（MRI）检查评估胎儿颅后窝池增宽的价值。方法：选择121例超声检查发现胎儿颅后窝池增宽或可疑合并其他颅脑结构病变的胎儿为研究对象，其中43例于超声检查1周内行MRI检查。分别将超声、MRI的检查结果与产后随访结果进行对比分析。结果：颅后窝池宽度的超声测量值与MRI测量值差异无统计学意义（P=0.327）。两种检查方法结果一致的有34例（79%），超声较MRI提供更明确诊断结果1例（2.3%），MRI较超声提供更明确诊断结果10例（23%）。结论：产前超声对诊断和鉴别各种颅后窝池增宽的病因有重要临床意义；MRI检查可弥补超声检查因胎儿体位、羊水少及孕妇自身原因造成的局限性，还可发现更多颅脑结构病变，提供更明确的产前诊断信息。

Objective:To evaluate the clinical value of ultrasonography combined with MRI in prenatal diagnosis of fetal cisterna magna dilatation.Methods:One hundred and twenty-one fetuses diagnosed with cisterna magna dilatation or associate with additional central nervous system on ultrasonography enrolled this study,among them 43 fetuses were examined by MRI in one week after prenatal ultrasonography.The results of prenatal ultrasonography and MRI were retrospectively analyzed.Results:There was no significate difference in values of cisterna magna measuremed by ultrasonography or MRI(P=0.327).The same result were obtained in 34 fetuses (79%) by the ultrasonography or MRI,MRI provided more accurate informations than ultrasonography in 10 fetuses(23%),but less accurate in one fetus(2.3%).Conclusions:Ultrasonography is an effective method in diagnosis and differential diagnosis of fetal cisterna magna dilatation.Prenatal MRI have its own advantages and is an important supplement to ultrasound in fetuses with central nervous system and provide more accurate diagnosis.

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