Table 1.
Summary of DL-based features and subjective severity assessment scores in chest CT with different grades of respiratory motion artifacts (mild, moderate and severe). Both subjective severity assessment and DL-based features suggested extensive pulmonary opacities in patients with moderate to severe artifacts as compared to those with mild or no motion artifacts.
| Variables | No motion (n = 167) |
Mild (n = 1) |
Moderate (n = 36) |
Severe (n = 17) |
p-Value |
|---|---|---|---|---|---|
| Volume of opacity | 705 ± 726 | 854 | 983 ± 768 | 1227 ± 707 | 0.016 |
| Percentage of opacity | 18 ± 19 | 18 | 32 ± 26 | 42 ± 23 | <0.001 |
| Mean HU of opacity | −534 ± 122 | −430 | −458 ± 142 | −466 ± 101 | 0.004 |
| Subjective severity assessment | 12 ± 5 | 0 | 13 ± 6 | 15 ± 5 | 0.009 |