* Methods: Compare TIMI frame count, coronary clearance frame count in baseline/hyperemic coronary angiography with FFR, CFR, IMR and derive correlation, receiver-operating characteristic curve to find new tools estimating coronary hemodynamics by conventional angiography only.~A TIMI frame count is measured by counting the angiographic image cine frames during a head of radiocontrast column runs from the entry of left anterior descending artery (LAD) to the distal end.~A coronary clearance frame count is measured by counting the angiographic image cine frames during a tail of radiocontrast column runs from the entry of LAD to the distal end.~Baseline angiography is performed without any stimulation and hyperemic angiography is performed after intracoronary injection of adenosine 300ug or nicorandiol 2mg.~Inclusion criteria~Patient who underwent physiologic study using a pressure wire for intermediate coronary lesion after coronary angiography~Exclusion criteria~ST elevation myocardial infarction~Cardiogenic shock~Congestive heart failure with pulmonary edema~LVEF < 30%~Previous history of coronary revascularization~Chronic total occlusion~3 vessel disease~Target lesion at distal segments or branches
Study for developing techniques to evaluate coronary artery hemodynamic profiles by conventional angiography without more dedicated measuring devices.