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Figure 4 Cardiac magnetic resonance imaging examples from three study patients with a variety of abnormalities on late contrast-enhanced images. (a) A small area of hyperenhancement at the inferolateral junction (arrow) in a patient with transient inferior ST-segment depression on the presenting electrocardiogram (ECG) (serum troponin level 7.5 mg/l). (b) Subendocardial hyperenhancement of the inferior wall, which appears to involve the posterior papillary muscle, in a patient who had no significant electrocardiographic changes (serum troponin level 0.7 mg/l). (c) Lateral full thickness hyperenhancement with a central hypoenhancing zone indicating no-reflow in the infarct core (arrow). Clinically, this patient presented with a non–ST-segment elevation myocardial infarction, and a standard 12-lead ECG showed only minimal ST-segment depression in the lateral leads. Peak creatinine kinase was 1,910 IU and troponin 12.3 mg/l.