Table 3.
The CTDIv, DLP, ED, Noise, fave, and Q-factor for all participating CT scanners
| Parameters | Head scan | Neck scan | ||||||
|---|---|---|---|---|---|---|---|---|
| 4-MDCT | 6-MDCT | 16-MDCT | 64-MDCT | 4-MDCT | 6-MDCT | 16-MDCT | 64-MDCT | |
| CTDIv [mGy] | 32 ± 4 | 27 ± 2 | 18 ± 3 | 49 ± 4 | 24 ± 6 | 18 ± 3 | 16 ± 2 | 27 ± 3 |
| DLP [mGy . cm] | 428 ± 55 | 373 ± 112 | 242 ± 28 | 692 ± 173 | 457 ± 171 | 286 ± 127 | 374 ± 123 | 645 ± 79 |
| ED [mSv] | 0.82 ± 0.11 | 0.71 ± 0.21 | 0.46 ± 0.05 | 1.31 ± 0.33 | 2.33 ± 0.87 | 1.46 ± 0.65 | 1.91 ± 0.62 | 3.29 ± 0.40 |
| Noise | 5.4 ± 0.7 | 4.3 ± 0.3 | 4.3 ± 0.4 | 2.2 ± 0.1 | 5.6 ± 0.5 | 4.3 ± 0.1 | 3.9 ± 0.2 | 2.8 ± 0.1 |
| fave | 6.5 | 6.6 | 6.9 | 7.2 | 6.7 | 7.6 | 7.5 | 7.9 |
| Q-factor | 2.4 | 3.3 | 4.4 | 5.6 | 3.4 | 4.6 | 4.7 | 6.0 |