COvid-19 LongitUdinal Multiethnic BioImaging Assessment of CARDiovascular Sequelae Registry

Inclusion Criteria: * Convalescent COVID-19 patient * If COVID-19 patient, at least 4 weeks after beginning of symptoms, and at least 2 weeks after hospital discharge if had been hospitalized. * Control patients who have had a negative COVID-19 screening without prior positive tests. * Willingness to undergo Clariscan-enhanced CMR scan. * Ability to hold breath for 15 seconds. * Willingness to give informed consent. * Greater than or equal to 18 years of Age. Exclusion Criteria: * Subjects who are Pregnant or nursing * Severe valvular heart disease * History of congestive heart failure preceding COVID-19 * History of obstructive coronary artery disease with known stenosis \>70% or fractional flow reserve \< 0.8 * Contraindication to MRI * Known allergy to gadoterate * Estimated glomerular filtration rate \<30 ml/min/1.73m2 * History of receiving more than 2 doses of a gadolinium-based contrast agent * Subject is of prisoner status