Fractional flow reserve sensitivity, specificity, and percent correctly classified stenoses according to myocardial perfusion scintigraphy across the low, intermediate and high HMR groups
| Low HMR | Intermediate HMR | High HMR | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Sensitivity | Specificity | Correctly classified | Sensitivity | Specificity | Correctly classified | Sensitivity | Specificity | Correctly classified | |
| FFR 0.75 cut-off | 30.0% | 71.7% | 65.7% | 42.9% | 72.7% | 68.1% | 57.6% | 91.8% | 79.8% |
| FFR 0.80 cut-off | 50.0% | 51.7% | 51.4% | 64.3% | 62.3% | 62.6% | 66.7% | 72.1% | 70.2% |
FFR, fractional flow reserve; HMR, hyperaemic microvascular resistance.