Table 2 Visual scores of PET images reconstructed by HYPER Iterative and OSEM at different scan times in the full-dose group
From: A proper protocol for routine 18F-FDG uEXPLORER total-body PET/CT scans
Time | Reconstruction algorithm | Reader 1 | Reader 2 | Average score | P | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Score 5 | Score 4 | Score 3 | Score 2 | Score 1 | Score 5 | Score 4 | Score 3 | Score 2 | Score 1 | ||||
10 s | OSEM | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 10 | 1.00 ± 0.00 | 0.000 |
|  | HYPER Iterative | 0 | 0 | 8 | 2 | 0 | 0 | 0 | 7 | 3 | 0 | 2.75 ± 0.44 |  |
30 s | OSEM | 0 | 0 | 0 | 9 | 1 | 0 | 0 | 0 | 8 | 2 | 1.85 ± 0.37 | 0.000 |
|  | HYPER Iterative | 1 | 9 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 4.05 ± 0.22 |  |
1 min | OSEM | 0 | 0 | 8 | 2 | 0 | 0 | 0 | 7 | 3 | 0 | 2.75 ± 0.44 | 0.000 |
|  | HYPER Iterative | 9 | 1 | 0 | 0 | 0 | 9 | 1 | 0 | 0 | 0 | 4.90 ± 0.32 |  |
2 min | OSEM | 8 | 2 | 0 | 0 | 0 | 8 | 2 | 0 | 0 | 0 | 4.80 ± 0.42 | 0.125 |
|  | HYPER Iterative | 10 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 5.00 ± 0.00 |  |
3 min | OSEM | 10 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 5.00 ± 0.00 | 1.000 |
|  | HYPER Iterative | 10 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 5.00 ± 0.00 |  |
4 min | OSEM | 10 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 5.00 ± 0.00 | 1.000 |
|  | HYPER Iterative | 10 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 5.00 ± 0.00 |  |
5 min | OSEM | 10 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 5.00 ± 0.00 | 1.000 |
|  | HYPER Iterative | 10 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 5.00 ± 0.00 |  |