Table 1 Reference values of mass density (ρ), relative electron density (ρ e ), effective atomic number (Z eff ) and elemental composition of the tissue-substitute materials present in the calibration and validation mini-phantoms
From: The impact of dual energy CT imaging on dose calculations for pre-clinical studies
Material | [g/cm3] | Mass percentage (%) | |||||||
|---|---|---|---|---|---|---|---|---|---|
n° | ρ | ρ e | Z eff | H | C | N | O | Z > 8 | |
Calibration Phantom | |||||||||
1 | AP6 | 0.947 | 0.928 | 6.210 | 9.06 | 72.30 | 2.25 | 16.27 | F(0.13) |
2 | Solid Water | 1.022 | 0.992 | 7.735 | 8.00 | 67.30 | 2.39 | 19.87 | Cl(0.14), Ca(2.31) |
3 | IB3 | 1.134 | 1.086 | 10.418 | 6.67 | 55.64 | 1.96 | 23.52 | P(3.23), Cl(0.11), Ca(8.86) |
4 | SR2 | 1.051 | 1.047 | 6.090 | 10.83 | 72.54 | 1.69 | 14.86 | Cl(0.08) |
5 | CB2–30% | 1.331 | 1.276 | 10.898 | 6.68 | 53.48 | 2.12 | 25.61 | Cl(0.11), Ca(12.01) |
6 | BR12 | 0.980 | 0.956 | 6.931 | 8.59 | 70.11 | 2.33 | 17.90 | Cl(0.13), Ca(0.95) |
7 | Air | 0.001 | 0.001 | 7.714 | 75.47 | 23.20 | Ar(1.28) | ||
8 | Water | 1.000 | 1.000 | 7.477 | 11.20 | 88.80 | |||
9 | B200 | 1.152 | 1.103 | 10.423 | 6.65 | 55.52 | 1.98 | 23.64 | P(3.24), Cl(0.11), Ca(8.87) |
10 | LV1 | 1.096 | 1.064 | 7.736 | 8.06 | 67.01 | 2.47 | 20.01 | Cl(0.14), Ca(2.31) |
11 | SB3 | 1.822 | 1.695 | 13.638 | 3.41 | 31.41 | 1.84 | 36.50 | Cl(0.04), Ca(26.81) |
12 | CB2–50% | 1.559 | 1.469 | 12.538 | 4.77 | 41.63 | 1.52 | 32.00 | Cl(0.08), Ca(20.02) |
Validation Phantom | |||||||||
1 | BR12 | 0.980 | 0.956 | 6.931 | 8.59 | 70.11 | 2.33 | 17.90 | Cl (0.13), Ca (0.95) |
2 | Teflon | 2.153 | 1.860 | 8.461 | 24.00 | F (76) | |||
3 | Lucite | 1.180 | 1.146 | 6.529 | 8.05 | 59.98 | 31.96 | ||
4 | Air | 0.001 | 0.001 | 7.714 | 75.47 | 23.20 | Ar (1.28) | ||
5 | PMMA | 1.190 | 1.156 | 6.529 | 8.05 | 59.98 | 31.96 | ||
6 | Paraffin | 0.930 | 0.959 | 5.483 | 14.90 | 85.10 | |||
7 | Water | 1.000 | 1.000 | 7.477 | 11.20 | 88.80 | |||
8 | Muscle | 1.062 | 1.041 | 7.588 | 9.10 | 69.70 | 2.10 | 16.80 | Cl (0.10), Ca (2.20) |
9 | Air | 0.001 | 0.001 | 7.714 | 75.47 | 23.20 | Ar (1.28) | ||
10 | Air | 0.001 | 0.001 | 7.714 | 75.47 | 23.20 | Ar (1.28) | ||
11 | Adipose | 0.967 | 0.956 | 6.439 | 10.00 | 71.30 | 1.80 | 16.40 | Cl (0.20), Ca (0.30) |
12 | Bone | 1.600 | 1.507 | 11.895 | 4.83 | 37.03 | 0.97 | 35.66 | Mg (6.19), Cl (0.05), Ca (15.24) |