Table 3.
Diagnostic analyses of all the washout rate calculation methods
| Method | R2 | P | AUC | Cutoff (%) | Specificity | Sensitivity |
|---|---|---|---|---|---|---|
| PLb | 0.25 | 0.0237 | 0.857 | 10.0 | 0.71 | 0.75 |
| PLn | 0.74 | < 0.0001 | 0.964 | 10.0 | 0.86 | 0.88 |
| PMpx | 1.00 | < 0.0001 | 1.000 | 10.0 | 1.00 | 0.90 |
| PMave | 1.00 | < 0.0001 | 1.000 | 10.0 | 1.00 | 0.90 |
| Ssum | 1.00 | < 0.0001 | 1.000 | 10.0 | 1.00 | 1.00 |
| Ssec | 1.00 | < 0.0001 | 1.000 | 10.0 | 1.00 | 1.00 |
PLb planar method with background correction, PLn planar method without background correction, PMpx polar map method with pixel-based calculation, PMave polar map method with average count, Ssum short-axis sum (SAsum) image method with total count calculation, Ssec SAsum method with eight-sector calculation