Table 1.
HRCT scoring criteria.
| HRCT imaging | Scores |
|---|---|
| Ground-glass changes | |
| No ground-glass opacities | 0 |
| Ground-glass opacity area < 5% | 1 |
| Ground-glass opacity area 6-24% | 2 |
| Ground-glass opacity area 25-49% | 3 |
| Ground-glass opacity area 50-74% | 4 |
| Ground glass opacity area > 75% | 5 |
| Reticular changes (septal thickening) | |
| No reticular shadow | 0 |
| Reticular shadow area < 5% | 1 |
| Reticular shadow area 6-24% | 2 |
| Reticular shadow area 25-49% | 3 |
| Reticular shadow area 50-74% | 4 |
| Reticular shadow area > 75% | 5 |
| Honeycomb-like changes | |
| No honeycombing | 0 |
| Honeycombing area < 5% | 1 |
| Honeycombing area 6-24% | 2 |
| Honeycombing area 25-49% | 3 |
| Honeycombing area 50-74% | 4 |
| Honeycombing area > 75% | 5 |
| Total |
The “area” indicates the percentage of lesions in the corresponding HRCT scans.