目的 研究磁共振成像(MRI)检查 与超声在诊断及鉴别胎儿先天性肺囊性 腺瘤样病变中应用。方法 选取我院2013 年1月至2016年6月110例临床怀疑为胎儿 先天性肺囊性腺瘤样病变的孕妇为研究 对象，所有患者均在产前行MRI检查和超 声检查，102例胎儿出生后接受手术病理 检查，8例尸解检查。结果 MRI检查的灵 敏度、特异度、准确率分别为98.98%、 83.33%、97.27%，超声检查的灵敏度、特 异度、准确率分别为97.94%、41.67%、 91.74%。MRI检查的特异度、准确率显著 高于超声检查(P＜0.05)。结论 MRI检查 具有视野广、软组织分辨率高等优点，相 较于超声检查可以更准确的诊断和鉴别胎 儿先天性肺囊性腺瘤样病变，对胎儿状况 的综合评估具有重要意义。

Objective To study the application of magnetic resonance imaging (MRI) and ultrasound in the diagnosis and differential diagnosis of fetal congenital pulmonary cystic adenomatoid lesions. Methods 110 patients with suspected fetal congenital pulmonary cystic adenomatoid lesions in our hospital between January 2013 and June 2016 were studied. All patients underwent MRI and ultrasound examination before delivery. After birth, 102 newborns received operation and pathological examination, and 8 cases were examined by autopsy. Results The sensitivity, specificity and accuracy of MRI were 98.98%, 83.33% and 97.27%, respectively while those of ultrasound were 97.94%, 41.67% and 91.74% respectively. The specificity and accuracy of MRI examination were significantly higher than those of ultrasound (P<0.05). Conclusion MRI has advantages of wide view and high resolution of soft tissue. Compared with ultrasound, MRI can be used for more accurate diagnosis and differential diagnosis of fetal congenital pulmonary cystic adenomatoid lesions, which is of important significance in comprehensive evaluation of the fetal status.