Cost implications of initial computed tomography angiography as opposed to catheterization in patients with mildly abnormal or equivocal myocardial perfusion scans.

Background: Patients with mildly abnormal or equivocal myocardial perfusion imaging (MPI) scans undergo diagnostic angiography or receive medical management. However, current guidelines mandate different treatment goals for patients with known coronary artery disease (CAD), and catheterization is often required. Coronary computed tomography angiography (CCTA) may be an effective alternative to catheterization for patients at intermediate risk for CAD.