Table 1. CNR calculated from simulated projections for two different concentrations of iodine-based contrast media.
| ROI | 60 kVp | 35 keV | gain | 60 kVp | 35 keV | gain |
|---|---|---|---|---|---|---|
| 75 mg/ml iodine | 50 mg/ml iodine | |||||
| 1 | 8.51 ± 0.49 | 9.96 ± 0.36 | 17% | 5.80 ± 0.32 | 7.18 ± 0.26 | 24% |
| 2 | 3.24 ± 0.34 | 3.79 ± 0.19 | 17% | 2.26 ± 0.20 | 2.83 ± 0.23 | 25% |
| 3 | 6.33 ± 0.34 | 7.67 ± 0.38 | 21% | 4.22 ± 0.21 | 5.41 ± 0.12 | 28% |
| 4 | 7.49 ± 0.44 | 9.10 ± 0.47 | 22% | 5.14 ± 0.21 | 6.54 ± 0.27 | 27% |
| 5 | 6.42 ± 0.35 | 7.81 ± 0.22 | 22% | 4.43 ± 0.17 | 5.49 ± 0.23 | 24% |
| 6 | 39.54 ± 1.85 | 29.13 ± 1.07 | −26% | 34.40 ± 1.17 | 27.62 ± 0.61 | −20% |
The standard deviation from the statistical variation of the simulation is given with the mean value of the CNR of the 10 simulation runs.