Table 7:

Interpretation of Stress Myocardial CT Perfusion. If there is presence of myocardial ischemia (reversible perfusion defect) or peri-infarct ischemia (perfusion defect during stress larger than rest perfusion defect), then the Modifier I+ (I=Ischemia) will be added to CAD-RADS. If no ischemia is detected or if there is presence of a prior fixed myocardial infarct, then the Modifier I- will be added to CAD-RADS. Modifier I ± indicates that the study is borderline for the presence of ischemia.