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Concordance between FFR and MFR by PET and CZT in 90 artery territories in 30 patients
| N = 90 | FFR ≤ 0.8 | FFR > 0.8 |
| CZT-SPECT MFR < 2.1 | 7 | 12 |
| CZT-SPECT MFR ≥ 2.1 | 5 | 66 |
| PET MFR < 2 | 8 | 9 |
| PET MFR ≥ 2 | 4 | 69 |
| MFR vs. FFR | PET MFR < 2 | CZT-SPECT < 2.1 |
| Accuracy | 86.7% | 81.1% |
| Sensitivity (%) | 66.7% | 58.3% |
| Specificity (%) | 88.5% | 84.6% |
| Positive predictive value (%) | 47.1% | 36.8% |
| Negative predictive value (%) | 94.5% | 93% |
