Linear Regression Analysis of Retention Vs. Myocardial Blood Flow for Low and High Flow Ranges
| Group | Flow range | |
|---|---|---|
| Low (≤1.0 mL/g/min) | High (>1.0 mL/g/min) | |
| Group 1 | ||
| Sestamibi slope | 0.3070 ± 0.01028 (<0.0001) | 0.1738 ± 0.006233 (<0.0001) |
| Tetrofosmin slope | 0.05974 ± 0.009525 (<0.0001) | 0.005058 ± 0.005291 (0.3412) |
| Are the slopes different? (P) | <0.0001 | <0.0001 |
| Group 2 | ||
| Sestamibi slope | 0.3670 ± 0.01326 (<0.0001) | 0.08652 ± 0.003768 (<0.0001) |
| Q12 slope | 0.02401 ± 0.006020 (<0.0001) | 0.01223 ± 0.001190 (<0.0001) |
| Are the slopes different? (P) | <0.0001 | 0.05571 |
Values in parentheses indicate probability values testing presence of slope different from 0 for relationship between retention and flow.