Diagnostic Performance of Nonhyperemic Pressure Ratios Assessed by 13N-Ammonium Positron Emission Tomography

Coronary revascularization should be performed in patients with objective evidence of myocardial ischemia. Fractional flow reserve (FFR) has been used as a reference standard to evaluate the functional significance of epicardial coronary stenosis. Recently, nonhyperemic pressure ratios (NHPRs) such