Practical approach to using cardiac magnetic resonance imaging for pre-surgical planning in complex paediatric congenital heart disease.

Decision-making in complex congenital heart disease (CHD) is challenging and requires the integration of anatomic and physiological data. Recent advances in cross-sectional imaging, particularly cardiac magnetic resonance imaging (MRI), have refined this process. In addition to anatomic detail, MRI provides quantitative physiological data on cardiac function and flows through volumetry and phase contrast assessment. This review outlines the current scope for cardiac MRI and aims to provide a practical framework for using the data in four structural anomalies: borderline left ventricle, double outlet right ventricle, congenitally corrected transposition of the great arteries and Ebstein anomaly of the tricuspid valve.