Energy (keV) | Dose | noiseμ (%) | noiseHU |
---|---|---|---|
32 | high | 4.4 | 60 |
low | 8.5 | 103 | |
35 | high | 3.8 | 83 |
low | 7.3 | 114 | |
38 | high | 3.7 | 66 |
low | 6.5 | 109 | |
40 | high | 3.5 | 66 |
low | 6.2 | 111 |
Energy (keV) | Dose | uniformityμ (%) | uniformityHU |
---|---|---|---|
32 | high | 1.79 | 17 |
low | 3.19 | 32 | |
35 | high | 1.45 | 12 |
low | 1.47 | 13 | |
38 | high | 2.58 | 26 |
low | 1.35 | 13 | |
40 | high | 2.54 | 24 |
low | 1.07 | 10 |
Energy (keV) | Detail (mm) | μ contrast (%) | HU contrast | ||
---|---|---|---|---|---|
high dose | low dose | high dose | low dose | ||
32 | 10 | 0.81 | 0.71 | 7 | 5 |
8 | 0.96 | 0.87 | 9 | 7 | |
6 | 1.10 | 0.53 | 10 | 4 | |
4 | 1.08 | 1.12 | 10 | 10 | |
2 | 0.52 | 0.93 | 5 | 8 | |
35 | 10 | 1.80 | 1.85 | 15 | 15 |
8 | 1.68 | 1.73 | 14 | 14 | |
6 | 1.56 | 1.64 | 13 | 13 | |
4 | 1.21 | 0.87 | 10 | 8 | |
2 | 0.90 | 0.91 | 8 | 8 | |
38 | 10 | 4.14 | 3.86 | 41 | 39 |
8 | 3.99 | 3.41 | 40 | 34 | |
6 | 3.66 | 4.02 | 36 | 41 | |
4 | 3.91 | 3.45 | 39 | 35 | |
2 | 3.17 | 3.79 | 31 | 38 | |
40 | 10 | 5.35 | 5.49 | 54 | 55 |
8 | 5.09 | 5.43 | 52 | 55 | |
6 | 5.12 | 4.85 | 52 | 49 | |
4 | 5.31 | 3.41 | 54 | 34 | |
2 | 5.73 | 3.79 | 59 | 38 |
Energy (keV) | Dose | R2 | slope (cm–1) | intercept (cm–1) |
---|---|---|---|---|
32 | high | 0.9996 | 175 ± 4 | 0.019 ± 0.009 |
low | 0.9996 | 170 ± 4 | 0.025 ± 0.009 | |
35 | high | 0.9997 | 176 ± 4 | 0.018 ± 0.008 |
low | 0.9996 | 173 ± 4 | 0.017 ± 0.009 | |
38 | high | 0.9998 | 177 ± 3 | 0.016 ± 0.005 |
low | 0.9992 | 175 ± 3 | 0.013 ± 0.006 | |
40 | high | 0.9992 | 174 ± 7 | 0.021 ± 0.012 |
low | 0.9991 | 172 ± 7 | 0.019 ± 0.012 |
Material | expected μ (cm–1) | measured μ (cm–1) | accuracyμ (%) | accuracyHU |
---|---|---|---|---|
PE | 0.216 | 0.221 ± 0.002 | 3.1 ± 1.3 | 24 ± 10 |
BR12 | 0.260 | 0.249 ± 0.004 | 4.0 ± 1.6 | 37 ± 14 |
Nylon | 0.271 | 0.273 ± 0.003 | 0.9 ± 1.0 | 8 ± 9 |
PMMA | 0.290 | 0.291 ± 0.003 | 0.4 ± 1.2 | 4 ± 12 |
POM | 0.359 | 0.360 ± 0.003 | 0.2 ± 0.8 | 3 ± 11 |
PTFE | 0.622 | 0.633 ± 0.003 | 0.1 ± 0.5 | 3 ± 11 |
Water | 0.282 | 0.278 ± 0.003 | 1.5 ± 0.9 | 14 ± 9 |