磁共振成像在胎儿肺部发育畸形诊断中的应用

目的 探讨磁共振成像技术在胎儿肺部发育畸形诊断中的应用价值。方法 对产前四维超声检查诊断或怀疑有肺部发育畸形的胎儿25例,在超声检查后2 d内进行磁共振检查,应用快速成像技术和特殊扫描序列(FIESTA 序列、T2 SSFSE 序列、FIRM 序列、DWI序列、SSFSE Thick Slab 序列)完成对胎儿的胸部横断位、矢状位、冠状位三方位扫描。结果 产前磁共振检查发现先天性肺囊腺瘤样畸形(CCAM)16例,肺隔离症(BPS)5例,先天性膈疝2例,产前磁共振检查对于得到随访结果的22例胎儿诊断均正确。结论 磁共振成像技术对于确定胎儿肺部发育畸形病变范围程度、肺部受压情况、正常肺组织定量以及判断胎儿预后方面有着明显的优势。

Application of MRI in the diagnosis of fetal lung malformation

Objective To explore the applicative value of MR imaging in the diagnosis of fetal lung malformation.Methods Twenty-five fetuses diagnosed or suspected as lung malformation by prenatal four dimensional ultrasound in had MR scanning within 2 days after ultrasound examination.Transversal,sagittal and coronal scanning of fetal chest had been done through fast imaging techniques and special scanning sequences(FIESTA,T2 SSFSE,FIRM and DWI and SSFSE Thick Slab Sequence).Results There were 16 cases of congenital cystic adenomatoid malformation,5 cases of pulmonary sequestration and 2 cases of congenital diaphragmatic hernia.MRI results had been confirmed by follow-up results.Conclusions MR imaging shows superiority in determining the scope of fetal lung malformation,extent of pulmonary compression,quantification of normal lung tissue and prognosis of fetus.