Table 1.
Mean attenuation values ± standard deviation (HU) at every reconstructed energy level for each collagen phantom are shown.
| Collagen Concentration (%) |
40 keV | 50 keV | 60 keV | 70 keV | 80 keV | 90 keV | 100 keV | 110 keV | 120 keV | 130 keV | 140 keV |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | −256.8 ± 21.7 | −291.0 ± 35.2 | −347.8 ± 49.9 | −391.6 ± 53.6 | −393.5 ± 53.8 | −392.9 ± 53.3 | −397.8 ± 53.0 | −401.6 ± 51.6 | −403.7 ± 51.3 | −404.8 ± 50.9 | −405.5 ± 50.8 |
| 7 | −345.9 ± 137.6 | −419.2 ± 114.7 | −513.7 ± 90.8 | −596.3 ± 66.8 | −611.1 ± 62.1 | −612.8 ± 62.1 | −623.0 ± 60.6 | −628.6 ± 59.7 | −631.8 ± 59.9 | −634.2 ± 60.2 | −635.6 ± 60.6 |
| 10 | −325.0 ± 105.2 | −383.2 ± 94.3 | −463.0 ± 83.3 | −535.1 ± 86.5 | 547.5 ± 73.3 | −549.2 ± 73.9 | −560.3 ± 75.1 | 566.5 ± 75.5 | −570.6 ± 75.7 | −573.7 ± 76.0 | 575.6 ± 76.2 |
| 15 | −375.2 ± 136.4 | −434.4 ± 114.3 | −510.6 ± 95.2 | −581.0 ± 86.5 | −592.8 ± 82.3 | −593.9 ± 81.5 | −604.3 ± 79.2 | −610.5 ± 77.5 | −614.0 ± 76.8 | −616.5 ± 76.2 | −617.7 ± 76.1 |
| 20 | −417.5 ± 77.0 | −486.2 ± 52.0 | −570.0 ± 30.2 | −643.4 ± 12.7 | −654.7 ± 14.3 | −656.1 ± 15.1 | −666.7 ± 16.2 | −671.9 ± 17.6 | −675.1 ± 18.3 | −677.0 ± 19.2 | −678.3 ± 19.6 |
| 30 | −327.4 ± 33.0 | −385.6 ± 31.7 | −460.7 ± 35.4 | −523.1 ± 33.7 | −532.4 ± 31.8 | −533.8 ± 30.9 | −542.2 ± 31.2 | −547.2 ± 31.1 | −549.8 ± 31.2 | −552.1 ± 31.1 | −553.3 ± 31.0 |
| 40 | −321.9 ± 77.0 | −378.7 ± 51.9 | −449.8 ± 30.2 | −523.0 ± 12.7 | −535.9 ± 14.3 | −538.8 ± 15.1 | −549.5 ± 16.2 | −555.9 ± 17.6 | −559.7 ± 18.3 | −562.0 ± 19.2 | −563.7 ± 19.6 |
| 62 | −325.6 ± 64.3 | −380.5 ± 47.0 | −455.6 ± 30.7 | −533.9 ± 21.6 | −547.3 ± 23.2 | −549.4 ± 24.1 | −560.6 ± 24.5 | −567.2 ± 25.6 | −570.8 ± 26.3 | −573.4 ± 26.8 | −575.2 ± 27.1 |