MBF Values at Rest and Stress in Patients with Correctly Identified and Misidentified PET MFRi When Using SPECT CZT
| PET MFR | CZT MFRi | n | PET MBF stress | PET MBF rest | CZT MBFi stress | CZT MBFi rest |
| High | High | 14 | 2.32 ± 0.45 | 0.91 ± 0.17 | 1.20 ± 0.23 | 0.87 ± 0.15 |
| High | Low | 4 | 2.39 ± 0.78 | 0.85 ± 0.22 | 1.14 ± 0.45 | 1.03 ± 0.32 |
| Low | Low | 7 | 1.57 ± 0.65 | 1.06 ± 0.27 | 1.04 ± 0.14 | 0.96 ± 0.17 |
| Low | High | 3 | 1.19 ± 0.43 | 0.90 ± 0.17 | 1.18 ± 0.17 | 0.82 ± 0.22 |
High PET MFR = myocardial flow rate ≥ 2 as assessed by PET (13N-ammonia); low PET MFR = myocardial flow rate < 2 as assessed by PET; high CZT MFRi = myocardial flow rate ≥ 1.26 as assessed by SPECT CZT (99mTc-tetrofosmin); low CZT MFRi = myocardial flow rate < 1.26 as assessed by SPECT CZT. Values are mL/g/min ± SD.