The study will assess the diagnostic efficacy (sensitivity and specificity) of Flurpiridaz F18 Injection MPI against SPECT MPI in patients screened for CAD as determined by ICA. Six hundred and eighty evaluable patients will be enrolled and will undergo SPECT MPI and Flurpiridaz F18 PET MPI. Patients will be considered for enrollment if they are scheduled to undergo or have undergone prior ICA without intervention (being either positive or negative for CAD).