Magnetic resonance imaging evaluation of congenital heart disease: conotruncal anomalies.

Conotruncal anomalies comprise a diverse group of congenital heart defects involving the outflow tracts of the heart and the great vessels, including tetralogy of Fallot, transposition of the great arteries, truncus arteriosus, interrupted aortic arch, and other anomalies. Cardiovascular magnetic resonance (CMR) imaging plays an increasingly important role in the evaluation of patients with these lesions. Advances in CMR allow comprehensive assessment of cardiovascular anatomy, ventricular function, flow, and myocardial perfusion and viability. This article reviews the clinical aspects and the application of CMR before and after surgery in key conotruncal anomalies.