Table 3 Visual scores of PET images reconstructed by HYPER Iterative and OSEM at different scan times in the half-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 | 0 | 10 | 0 | 0 | 0 | 0 | 10 | 0 | 2.00 ± 0.00 | |
30 s | OSEM | 0 | 0 | 0 | 8 | 2 | 0 | 0 | 0 | 7 | 3 | 1.75 ± 0.44 | 0.000 |
|  | HYPER Iterative | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 8 | 2 | 0 | 2.90 ± 0.31 | |
1 min | OSEM | 0 | 0 | 7 | 3 | 0 | 0 | 0 | 7 | 3 | 0 | 2.70 ± 0.47 | 0.000 |
|  | HYPER Iterative | 0 | 8 | 2 | 0 | 0 | 0 | 7 | 3 | 0 | 0 | 3.75 ± 0.44 | |
2 min | OSEM | 0 | 8 | 2 | 0 | 0 | 0 | 7 | 7 | 0 | 0 | 3.75 ± 0.44 | 0.000 |
|  | HYPER Iterative | 8 | 2 | 0 | 0 | 0 | 8 | 2 | 0 | 0 | 0 | 4.80 ± 0.41 | |
3 min | OSEM | 9 | 1 | 0 | 0 | 0 | 8 | 2 | 0 | 0 | 0 | 4.85 ± 0.37 | 0.250 |
|  | 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 | ||