Mean objective measurements of background noisea
| CTDIw (mGy) | 15 mg I/mL | 20 mg I/mL | ||||||
|---|---|---|---|---|---|---|---|---|
| 80 kV(p) | 100 kV(p) | 120 kV(p) | 135 kVp | 80 kV(p) | 100 kV(p) | 120 kV(p) | 135 kV(p) | |
| 33 | 34.8 ± 0.18 | 24.2 ± 0.24 | 21.1 ± 0.18 | 20.0 ± 0.20 | 35.3 ± 0.14 | 24.9 ± 0.03 | 21.7 ± 0.08 | 20.0 ± 0.16 |
| 38 | 31.4 ± 0.26 | 22.3 ± 0.34 | 19.4 ± 0.27 | 19.3 ± 0.12 | 32.9 ± 0.28 | 23.0 ± 0.07 | 19.8 ± 0.14 | 19.2 ± 0.02 |
| 43 | 29.3 ± 0.13 | 21.5 ± 0.14 | 18.6 ± 0.08 | 18.0 ± 0.15 | 29.7 ± 0.28 | 21.6 ± 0.28 | 18.6 ± 0.07 | 17.7 ± 0.02 |
| 48 | 20.2 ± 0.16 | 17.7 ± 0.19 | 16.9 ± 0.16 | 20.5 ± 0.28 | 17.9 ± 0.01 | 16.6 ± 0.02 | ||
| 53 | 19.4 ± 0.11 | 16.6 ± 0.21 | 16.3 ± 0.13 | 19.4 ± 0.13 | 16.5 ± 0.16 | 15.9 ± 0.02 | ||
a Data are the mean ± SD.