The Value of CT-FFR Compared to CCTA or CCTA and Stress MPI in Low to Intermediate Risk ED Patients With Toshiba CT-FFR

Patients receiving CCTA to diagnose acute chest pain or unstable angina will receive CT-FFR to estimate rate of blood flow through the coronary arteries. The rate of flow will be compared to the rate found on Invasive FFR (the gold standard) if the subject receives invasive FFR.