A new kind of "silent" heart attack.  It's as deadly as a symptomatic heart attack--but this kind is not visible on an electrocardiogram.
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017023:Coronary Angiography; D004562:Electrocardiography; D006801:Humans; D008137:Longitudinal Studies; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D009203:Myocardial Infarction / Q000145:classification / Q000175:diagnosis*