Table 2.
PMMA (cm) | Acquisition mode | ESAK (µGy/fr) | Tube potential (kVp) | Filter (mm Cu) | SNR for matrix 512 (for circle 2) | SNR for matrix 1,024 (for circle 2) | HCSR for matrix 512 (for 8th group of the central grid) | HCSR for matrix 1,024 (for 8th group of the central grid) |
---|---|---|---|---|---|---|---|---|
4 | CI | 2.1 | 62 | 0.9 | 8.9 ± 0.1 | 7.0 ± 0.2 | 6.9 ± 0.1 | 128.0 ± 1.4 |
8 | CI | 5.8 | 63 | 0.6 | 8.2 ± 0.9 | 6.7 ± 0.2 | 6.6 ± 0.1 | 118.5 ± 3.0 |
12 | CI | 24.9 | 67 | 0.3 | 6.9 ± 0.2 | 5.5 ± 0.4 | 5.7 ± 0.1 | 102.2 ± 1.4 |
16 | CI | 44.8 | 68 | 0.2 | 6.6 ± 0.1 | 5.4 ± 0.2 | 5.3 ± 0.2 | 95.7 ± 1.2 |
FOV 25 cm