Bernard C, Galloy M A, Marçon F, Prevot J, Hoeffel J C, Pernot C
Service de radiologie, hôpital d'Enfants, Vandoeuvre.
Arch Mal Coeur Vaiss. 1988 Oct;81(10):1277-80.
The authors present a case of double aortic arch explored by MRI and discuss the advantages and disadvantages of MRI as compared to other noninvasive imaging methods, such as ultrasounds and digital angiography, in congenital pathology of the aorta. Because it provides good quality images, can explore the aorta in all three dimensions, has optimal vascular contrast without contrast injection and carries no risk, MRI is indispensable in all cases where ultrasonography finds its limitations. Besides, the subjective factor inherent in the operator is very small, and MRI is the best available method to study the relations between the aorta and the surrounding organs; this is particularly important in case of double aortic arch owing to compression of the neighbouring organs with, notably, stridor. However, the vascular map is less accurate than with angiography, and the cost, the problem of access to the machines and the long time required for acquisitions limit the use of MRI.
作者介绍了一例通过磁共振成像（MRI）检查的双主动脉弓病例，并讨论了在主动脉先天性病变中，与其他非侵入性成像方法（如超声和数字血管造影）相比，MRI的优缺点。由于MRI能提供高质量图像，可从三维空间对主动脉进行检查，无需注射造影剂就能获得最佳血管对比度且无风险，因此在超声检查存在局限性的所有病例中，MRI都不可或缺。此外，操作人员固有的主观因素非常小，MRI是研究主动脉与周围器官关系的最佳可用方法；在双主动脉弓病例中，由于邻近器官受压，尤其是出现喘鸣时，这一点尤为重要。然而，血管造影图不如血管造影精确，而且成本、设备使用问题以及采集所需的长时间限制了MRI的应用。
