Inclusion Criteria:  1. ≥ 18 years of age at the time of enrollment.  Exclusion Criteria:  < 18 years of age Patients unable to fit into device Non-ambulatory patients Patients with present with or have reasonable clinical suspicion of any acute coronary syndrome for which delayed intervention could increase the risk or magnitude of damaged myocardium Patients with claustrophobia or unable to lie supine for 5 minutes Pregnant women Poor candidate for follow-up (e.g. no access to phone) Prisoners Patients with a language barrier/language difficulties