CTICasesAcute Myocarditis
Imaging findings
Cardiac MRI shows mild global hypokinesis of the left ventricle with an ejection fraction of 30-40%. Delayed contrast enhancement images demonstrate nearly circumferential, subepicardial late gadolinium enhancement (LGE) involving the left ventricular wall, with associated myocardial edema.
Key takeaways
Acute myocarditis is an inflammatory disease of the myocardium. On cardiac MRI, it classically presents with subepicardial or mid-myocardial late gadolinium enhancement that spares the subendocardium (unlike ischemic injury). Troponin levels are typically markedly elevated during the acute phase.
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