This issue of Heart Failure Clinics, guest edited by Dr. Subha V. Raman, will cover key topics in Cardiovascular Magnetic Resonance. This issue is one of four issues selected each year by our series consulting editor, Dr. Eduardo Bossone. Topics discussed in this issue will include: When to use CMR for patients with heart failure; Quantifying cardiac dysfunction with CMR; CMR in heritable cardiomyopathies; CMR in ischemic cardiomyopathy; CMR in right heart and pulmonary circulation disorders; CMR of myocardial fibrosis, edema, and infiltrates in heart failure; Magnetic resonance-based characterization of myocardial architecture; CMR in valvular heart disease-related heart failure; Pericardial disease with CMR; CMR's central role in chemotherapy-induced cardiotoxicity; Intracardiac and vascular hemodynamics with CMR in heart failure; Myocardial energetics with CMR; CMR in congenital heart disease: focus on heart failure; and Machine learning in CMR applied to heart failure.