Blondiaux Eléonore, Garel Catherine
Department of Radiology, Hôpital d'Enfants Armand-Trousseau, Paris, France.
Acta Radiol. 2013 Nov;54(9):1046-54. doi: 10.1258/ar.2012.120428. Epub 2013 Apr 30.
The purpose of this article is to analyze the advantages and limitations of prenatal ultrasonography (US) and magnetic resonance imaging (MRI) in the evaluation of the fetal brain. These imaging modalities should not be seen as competitive but rather as complementary. There are wide variations in the world regarding screening policies, technology, skills, and legislation about termination of pregnancy, and these variations markedly impact on the way of using prenatal imaging. According to the contribution expected from each technique and to local working conditions, one should choose the most appropriate imaging modality on a case-by-case basis. The advantages and limitations of US and MRI in the setting of fetal brain imaging are displayed. Different anatomical regions (midline, ventricles, subependymal area, cerebral parenchyma, pericerebral space, posterior fossa) and pathological conditions are analyzed and illustrated in order to compare the respective contribution of each technique. An accurate prenatal diagnosis of cerebral abnormalities is of utmost importance for prenatal counseling.
本文旨在分析产前超声检查（US）和磁共振成像（MRI）在评估胎儿脑部方面的优势与局限性。这些成像方式不应被视为相互竞争，而应是互补的。在全球范围内，关于妊娠终止的筛查政策、技术、技能和立法存在很大差异，这些差异显著影响产前成像的使用方式。根据每种技术预期的贡献以及当地的工作条件，应逐案选择最合适的成像方式。展示了US和MRI在胎儿脑部成像中的优势与局限性。为了比较每种技术的各自贡献，对不同的解剖区域（中线、脑室、室管膜下区域、脑实质、脑周间隙、后颅窝）和病理状况进行了分析和说明。准确的产前脑部异常诊断对于产前咨询至关重要。
