Chest pain due to coronary artery disease (CAD) is a main driver of healthcare costs. Fractional flow reserve (FFR) measurement during invasive coronary angiography (ICA) is the gold standard to discriminate ischemia. A rapid simplified method had been developed to determine non-invasive FFR (FFRB) by applying computational fluid dynamics (CFD) simulation on anatomic models derived from computed tomographic coronary angiography (CTCA).In this current study, the aims is to compare the diagnostic accuracy, clinical effectiveness, safety outcomes, and quality of life of using FFRB on top of CTCA for CAD diagnosis and treatment planning, versus standard of care in Singapore; and measure health care resource utilization and assess cost-effectiveness of adopting FFRB on top of CTCA to support decision making in managing patients with suspected CAD.