Secchi F, Giardino A, Nardella V G, Sardanelli F
Università degli Studi di Milano, Facoltà di Medicina e Chirurgia.
Pediatr Med Chir. 2010 Nov-Dec;32(6):260-9.
Magnetic resonance imaging (MRI) allows a static and cinetic study of congenital heart diseases avoiding patient exposure to ionizing radiation. It allows for evaluating cardiac morphology, heart function with accurate ventricular volume estimation, flow quantification with gradient and regurgitant fraction estimation, and vascular anatomy (aortic, pulmonary and proximal coronary vessels). Computed tomography (CT), with greater spatial resolution, allows for evaluating proximal and distal coronary arteries, vascular and pericardial calcifications, metal structures such as stents and prosthetic valves. The use of MRI or CT in young and adult patients with congenital heart diseases should be assessed case by case through a close collaboration between cardiologists and radiologists, aiming at an optimal tradeoff between expected diagnostic gain and biological cost in terms of ionizing radiation exposure and contrast material administration.
磁共振成像（MRI）能够对先天性心脏病进行静态和动态研究，且避免患者暴露于电离辐射。它可用于评估心脏形态、通过准确估计心室容积来评估心脏功能、通过梯度和反流分数估计进行血流定量，以及评估血管解剖结构（主动脉、肺动脉和近端冠状动脉血管）。计算机断层扫描（CT）具有更高的空间分辨率，可用于评估近端和远端冠状动脉、血管和心包钙化、金属结构如支架和人工瓣膜。对于患有先天性心脏病的年轻和成年患者，应通过心脏病专家和放射科医生之间的密切合作，逐案评估MRI或CT的使用，目标是在预期诊断收益与电离辐射暴露和造影剂使用方面的生物学成本之间实现最佳权衡。
