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Image noise and signal-difference-to-noise ratio (SDNR) measurement results for each scan/reconstruction technique
| Scan condition | Mean noise (SD of noise) in water phantom (HU) | Mean SDNR (SD of SDNR) in anthropomorphic phantom |
|---|---|---|
| 100 kV | 11.56 (0.28) | 9.56 (0.30) |
| 120 kV | 11.08 (0.21) | 8.72 (0.25) |
| 100/140 kV | 10.68 (0.26) | 8.23 (0.23) |
| 100/140 kV Optimum Contrast | Not measured | 8.46 (0.21) |
HU, Hounsfield unit; SD, standard deviation.
Optimum Contrast; Siemens Healthcare, Forcheim, Germany.
