Noise Levels in Thorax CT Images Using ATCM and NI of 20 in Patients with BMI ≤ 28
| Noise (SD of CT number in HU) | ||||
| Patient no. | ROI 1 | ROI 2 | ROI 3 | Mean |
| 1 | 11.7 | 9.3 | 12.9 | 11.3 |
| 2 | 8.0 | 9.1 | 12.3 | 9.8 |
| 3 | 8.5 | 14 | 10.5 | 11.0 |
| 4 | 9.1 | 11.1 | 10.4 | 10.2 |
| 5 | 7.1 | 10.2 | 11.9 | 9.7 |
| 6 | 8.9 | 9.7 | 13.7 | 10.8 |
| 7 | 9.1 | 8.4 | 12.6 | 10.0 |
| 8 | 9.1 | 12 | 11.6 | 10.9 |
| 9 | 10.0 | 12.4 | 13.1 | 11.8 |
| 10 | 7.0 | 9.4 | 12.7 | 9.7 |
| 11 | 9.4 | 11.3 | 13.2 | 11.3 |
| 12 | 8.4 | 11 | 11.0 | 10.1 |
| 13 | 7.0 | 12.2 | 14.4 | 11.2 |
| 14 | 8.0 | 9.4 | 12.3 | 9.9 |
| 15 | 7.3 | 10.8 | 12.2 | 10.1 |
| 16 | 10.6 | 12.3 | 12.3 | 11.7 |
| 17 | 10.8 | 10.6 | 11.0 | 10.8 |
| 18 | 9.7 | 12.5 | 13.7 | 12.0 |
| 19 | 9.3 | 11.8 | 14.0 | 11.7 |
| 20 | 9.8 | 13.3 | 12.7 | 11.9 |
| 21 | 7.5 | 10.3 | 12.4 | 10.1 |
| 22 | 9.5 | 12.1 | 9.3 | 10.3 |
| Mean noise in all thorax scans | 10.7 | |||