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Image quality parameters for 80-kVp and virtual 120-kVp images.
| Variable | 80 kVp | virtual 120 kVp | p-value |
|---|---|---|---|
| BN | 13.6 ± 4.3 | 9.7 ± 5.4 | <0.05 |
| Subjective noise rating | 3.3 ± 1.5 | 1.5 ± 0.4 | <0.05 |
| SNR | 11.4 ± 2.6 | 7.7 ± 3.7 | <0.05 |
| CNR | 7.5 ± 3.2 | 4.8 ± 2.9 | <0.05 |
| Image quality | 2.8 ± 0.7 | 1.6 ± 0.9 | <0.05 |
