Department of Radiological Oncological and Anatomopathological Sciences, Policlinico Umberto I, "Sapienza" University of Rome, Viale Regina Elena 324, 00161, Rome, Italy,
Radiol Med. 2015 Apr;120(4):393-403. doi: 10.1007/s11547-014-0464-2. Epub 2014 Oct 28.
This study was done to evaluate the role of fetal magnetic resonance imaging (MRI) in the study of gastrointestinal malformations in comparison to prenatal ultrasound (US).
A prospective (2010-2012) study of 38 fetal MRI scans was performed on 38 fetuses between 24 and 38 weeks of gestation. All the fetuses had a US diagnosis of gastrointestinal anomalies. T2-weighted HASTE, T1-weighted fast gradient echo, TrueFISP and diffusion-weighted images of the fetal abdomen were obtained on a 1.5-Tesla magnet. All fetal MRI diagnoses were compared with postnatal US findings, autopsy or surgical reports.
Fetal MRI was able to confirm the sonographic findings in nine of 38 fetuses (23.7%), to provide additional information in 23 of 38 fetuses (60.6%), to exclude the US diagnosis in five cases (5.2%) and to change it in two cases (5.2%). It was not able to characterize a case of gastric duplication and a case of abdominal cystic lymphangioma (5.2%).
Fetal MRI can be used as a complementary imaging modality to US in prenatal evaluation of gastrointestinal anomalies and can be considered a valuable tool not only for confirming or excluding but also for providing additional information to fetal ultrasonographic findings.
本研究旨在评估胎儿磁共振成像（MRI）在胃肠道畸形研究中的作用，与产前超声（US）相比。
对 38 例 24 至 38 周妊娠胎儿进行前瞻性（2010-2012 年）研究。所有胎儿均有胃肠道异常的 US 诊断。在 1.5T 磁体上获得胎儿腹部 T2 加权 HASTE、T1 加权快速梯度回波、TrueFISP 和弥散加权图像。所有胎儿 MRI 诊断均与产后 US 结果、尸检或手术报告进行比较。
胎儿 MRI 能够在 38 例胎儿中的 9 例（23.7%）中证实超声检查结果，在 38 例胎儿中的 23 例（60.6%）中提供额外信息，在 5 例（5.2%）中排除 US 诊断，在 2 例（5.2%）中改变 US 诊断。它无法对胃重复畸形和腹部囊性淋巴管瘤进行特征化（5.2%）。
胎儿 MRI 可作为产前胃肠道畸形评估的超声补充成像方式，不仅可用于确认或排除，还可用于为胎儿超声检查结果提供额外信息，是一种有价值的工具。
