Beaumont Health System, Royal Oak, MI.
Semin Perinatol. 2013 Oct;37(5):334-9. doi: 10.1053/j.semperi.2013.06.010.
Fetal MRI is now a well-established imaging modality for the diagnostic evaluation of fetuses with congenital anomalies. In this article, the authors provide a brief overview of the physical principles involved in fetal MRI imaging, the sequences that are used in clinical practice today, current indications, and limitations. A review of current evidence supports the following indications for fetal MRI: suspected central nervous system anomalies, neck and oropharyngeal masses, diaphragmatic hernia, abdominal masses or bowel pathology not fully characterized by ultrasonography, and suspected fetal infection. Other indications should be decided on a case-by-case basis with close collaboration between the departments of maternal-fetal medicine and radiology. More research is needed to determine the role of fetal MRI in functional neuroimaging at higher magnetic field strengths (3T).
胎儿 MRI 现已成为一种成熟的影像学诊断工具，可用于评估先天性畸形胎儿。本文简要介绍了胎儿 MRI 成像涉及的物理原理、目前临床应用的序列、当前的适应证和局限性。对现有证据的回顾支持胎儿 MRI 的以下适应证：疑似中枢神经系统异常、颈部和口咽肿块、横膈疝、超声检查未能充分明确的腹部肿块或肠部病变，以及疑似胎儿感染。其他适应证应根据具体情况，由母胎医学和放射科密切协作决定。需要更多的研究来确定在更高场强（3T）下胎儿 MRI 在功能神经影像学中的作用。
