Assessing Diagnostic Value of Non-invasive FFR-CT in Coronary Care in the Emergency Department

This is a prospective multi-center study. All clinically stable, symptomatic patients who present to the emergency department (ED) or observation unit with suspected coronary artery disease (CAD) and who have at least one ≥40% lesion and no lesion \>90% confirmed by CCTA (Coronary Computed Tomography Angiogram) are eligible for enrollment once their CCTA has been completed and their FFR-CT (if applicable) has been ordered. All enrolling sites will have CCTA incorporated into their standard evaluation of chest pain in the ED/observation unit. Non-control sites will have CCTA and FFR-CT analysis incorporated into their standard evaluation of chest pain in the ED/observation unit.