The study published in the JAMA Cardiology showed that predicting mortality is a key requirement for the technology to be more widely used. In addition results suggest cardiac magnetic resonance (CMR) has the potential to be a non-invasive non-toxic alternative to stress echocardiograms catheterisations and stress nuclear exams in identifying the severity of the coronary artery disease. We've known for some time that CMR is effective at diagnosing coronary artery disease but it's still not commonly used and represents less than one per cent of stress tests used in this country said senior author Robert Judd co-director of the Duke Cardiovascular