Stress ECG findings including 2 mm of ST-segment depression at low workload or persisting into recovery, exercise-induced ST-segment elevation, or exercise-induced VT/VF 4. Severe stress-induced LV dysfunction (peak exercise LVEF drop in LVEF with stress 10%) 5. Stress-induced perfusion abnormalities encumbering 10% myocardium or stress segmental scores indicating multiple vascular territories with abnormalities 6. Stress-induced LV dilation 7. Inducible wall motion abnormality (involving 2 segments or 2 coronary beds) 8. Wall motion abnormality developing at low dose of dobutamine ( 10 mg/kg/min) or at a low heart rate ( 9. CAC score 400 Agatston units 10. Multivessel obstructive CAD (70% stenosis) or left main stenosis (50% stenosis) on CCTA Intermediate risk (1% to 3% annual death or MI) 1. Mild/moderate resting LV dysfunction (LVEF 35% to 49%) not readily explained by noncoronary causes 2. Resting perfusion abnormalities in 5% to 9.9% of the myocardium in patients without a history or prior evidence of MI 3. 1 mm of ST-segment depression occurring with exertional symptoms 4. Stress-induced perfusion abnormalities encumbering 5% to 9.9% of the myocardium or stress segmental scores (in multiple segments) indicating 1 vascular territory with abnormalities but without LV dilation 5. Small wall motion abnormality involving 1 to 2 segments and only 1 coronary bed 6. CAC score 100 to 399 Agatston units 7. One vessel CAD with 70% stenosis or moderate CAD stenosis (50% to 69% stenosis) in 2 arteries on CCTA Low risk ( 1% annual death or MI) 1. Low-risk treadmill score (score 5) or no new ST segment changes or exercise-induced chest pain symptoms; when achieving maximal levels of exercise 2. Normal or small myocardial perfusion defect at rest or with stress encumbering 5% of the myocardium* 3. Normal stress or no change of limited resting wall motion abnormalities during stress 4. 