Data of standard- and low-dose cervical spine trauma MDCT examinations
| Variable | Standard Dose | Low Dose: High Tube Voltage | Low Dose: Low Tube Voltage |
|---|---|---|---|
| Tube type | Fixed tube current | Tube current modulation | Tube current modulation |
| No. of patients | 51 | 70 | 70 |
| Effective dose, mSv* | 3.75 ± 0.25 | 1.57 ± 0.38 | 1.08 ± 0.28 |
| Image noise, HU* | 14.82 ± 5.46 | 17.46 ± 6.50 | 19.72 ± 6.17 |
| Image quality scores (0–4)* | |||
| Reviewer 1 | 3.02 ± 0.62 | 3.04 ± 0.51 | 2.95 ± 0.65 |
| Reviewer 2 | 3.02 ± 0.47 | 3.06 ± 0.52 | 2.94 ± 0.56 |
| Reviewer 3 | 2.92 ± 0.64 | 2.99 ± 0.63 | 2.81 ± 0.62 |
| Reviewer 4 | 2.82 ± 0.65 | 2.90 ± 0.71 | 2.70 ± 0.67 |
Note:—Reviewers 1 and 2 are experienced radiologists; reviewers 3 and 4 are a second-year and a first-year resident, respectively.
* Data are mean ± SD.