Inclusion Criteria:  Male or females over the age of 40 with recent (within 21±2 days) acute type 1 anterior myocardial infarction Provision of informed consent prior to any study specific procedures  Exclusion Criteria:  Inability or unwilling to give informed consent. Concomitant use of anticoagulation agents (warfarin, apixaban, edoxaban, rivaroxaban, dabigatran or SC/IV Heparin) (Cohort 1 only) Unable to tolerate the supine position Impaired renal function with eGFR of <30 mL/min/1.73m2 Severe or significant comorbidity Women who are pregnant or breastfeeding • Severe claustrophobia