Table 2.
Noise Values at Radiation Dose Levels.
| Radiation Dose (%) |
ED (mSv) |
Reconstruction | Noise (SD of HU) |
p | r |
|---|---|---|---|---|---|
| vs. 100% ADMIRE 2 | |||||
| 100 | 13.3 ± 9.1 | FBP | 10.51 ± 1.30 | 1.000 | 0.44 |
| ADMIRE 1 | 9.22 ± 1.12 | 1.000 | <0.1 | ||
| ADMIRE 2 | 8.98 ± 2.62 | ||||
| ADMIRE 3 | 7.06 ± 0.85 | 1.000 | 0.38 | ||
| ADMIRE 4 | 6.14 ± 1.25 | 1.000 | 0.58 | ||
| ADMIRE 5 | 4.62 ± 0.58 | 0.215 | >0.7 | ||
| 80 | 10.7 ± 7.2 | FBP | 11.92 ± 1.53 | 1.000 | >0.7 |
| ADMIRE 1 | 10.46 ± 1.33 | 1.000 | 0.42 | ||
| ADMIRE 2 | 9.18 ± 1.31 | 1.000 | <0.1 | ||
| ADMIRE 3 | 7.95 ± 1.02 | 1.000 | 0.18 | ||
| ADMIRE 4 | 6.88 ± 1.38 | 1.000 | 0.46 | ||
| ADMIRE 5 | 5.14 ± 0.66 | 0.728 | >0.7 | ||
| 60 | 8.0 ± 4.5 | FBP | 13.74 ± 1.86 | 0.007 | >0.7 |
| ADMIRE 1 | 12.08 ± 1.63 | 0.491 | >0.7 | ||
| ADMIRE 2 | 10.55 ± 1.61 | 1.000 | 0.46 | ||
| ADMIRE 3 | 9.18 ± 1.24 | 1.000 | <0.1 | ||
| ADMIRE 4 | 7.92 ± 1.65 | 1.000 | 0.21 | ||
| ADMIRE 5 | 5.86 ± 0.80 | 1.000 | 0.62 | ||
| 40 | 5.3 ± 3.6 | FBP | 16.78 ± 2.37 | <0.001 | >0.7 |
| ADMIRE 1 | 14.65 ± 2.18 | 0.002 | >0.7 | ||
| ADMIRE 2 | 12.95 ± 2.09 | 0.090 | >0.7 | ||
| ADMIRE 3 | 11.27 ± 1.73 | 1.000 | 0.60 | ||
| ADMIRE 4 | 9.58 ± 2.02 | 1.000 | 0.19 | ||
| ADMIRE 5 | 7.00 ± 1.09 | 1.000 | 0.40 | ||
| 20 | 2.7 ± 1.8 | FBP | 23.85 ± 3.61 | <0.001 | >0.7 |
| ADMIRE 1 | 20.97 ± 3.14 | <0.001 | >0.7 | ||
| ADMIRE 2 | 18.33 ± 3.39 | <0.001 | > 0.7 | ||
| ADMIRE 3 | 15.85 ± 2.45 | <0.001 | >0.7 | ||
| ADMIRE 4 | 13.55 ± 2.85 | 0.033 | >0.7 | ||
| ADMIRE 5 | 9.98 ± 1.53 | 1.000 | 0.29 | ||
ED = Effective Radiation Dose; SD = Standard Deviation; HU = Hounsfield Units.