TABLE II:
The average(± standard deviation) MAE(%) and NRMSE(%) across 3 noise realizations of 177Lu VP phantoms.
| MAE(%) | ||||
| Lesion/Organ | OSEM | Sequential | Truncation | End2end |
| Lesion (6–152mL) | 11.1 ± 2.5 | 9.4 ± 3.2 | 6.7 ± 2.4 | 7.3 ± 2.8 |
| Liver | 4.8 ± 0.1 | 4.5 ± 0.2 | 3.4 ± 0.6 | 4.0 ± 0.2 |
| Healthy liver | 4.1 ± 0.1 | 4.1 ± 0.1 | 3.5 ± 0.6 | 4.1 ± 0.2 |
| Lung | 3.4 ± 0.1 | 3.0 ± 0.2 | 2.4 ± 0.7 | 3.0 ± 0.5 |
| Kidney | 5.2 ± 0.3 | 4.3 ± 0.1 | 2.6 ± 0.1 | 2.3 ± 0.2 |
| Spleen | 0.8 ± 0.2 | 0.6 ± 0.1 | 1.3 ± 0.6 | 1.2 ± 0.4 |
| NRMSE(%) | ||||
| Lesion/Organ | OSEM | Sequential | Truncation | End2end |
| Lesion (6–152mL) | 16.1 ± 2.2 | 14.9 ± 2.4 | 14.3 ± 1.7 | 14.2 ± 2.1 |
| Liver | 15.9 ± 0.2 | 15.3 ± 0.1 | 15.5 ± 0.6 | 15.3 ± 0.1 |
| Healthy liver | 16.8 ± 0.1 | 16.6 ± 0.1 | 17.3 ± 0.5 | 17.1 ± 0.3 |
| Lung | 22.3 ± 0.3 | 22.1 ± 0.4 | 22.0 ± 0.4 | 21.9 ± 0.5 |
| Kidney | 17.4 ± 0.1 | 16.8 ± 0.1 | 16.4 ± 0.3 | 16.3 ± 0.5 |
| Spleen | 13.5 ± 0.2 | 12.4 ± 0.3 | 12.3 ± 0.7 | 12.3 ± 0.5 |