Decision to select unprotected left main (ULM) stenting versus coronary artery bypass grafting surgery (CABG) depends on a multiplicity of factors, one of the most critical of which is myocardial viability. Delayed enhancement cardiac magnetic resonance (CMR) imaging has emerged as a useful means of comprehensively evaluating viable myocardium in postmyocardial infarct patients who require further revascularization. We present a patient with ULM stenosis in whom CMR imaging assisted in the decision to perform percutaneous coronary intervention over CABG.
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