 Late gadolinium enhancement (LGE) and T1 mapping allow infarction and fibrosis to be identified for characterizing cardiomyopathy and assessing viability.Magnetic resonance angiography may be performed with or without contrast medium and is used to assess congenital or acquired abnormalities of the coronary arteries and great vessels.Obstacles to its wider application include limited access to suitably-equipped scanners, lack of technologists and clinicians with the necessary skills to run a service, relatively high costs, and competing diagnostic modalities.