Descriptive assessment of CT scans for various structural changes (values recorded as percentage of total number of areas assessed for each group)
| FEV1 (% predicted) | No of patients | No of areas assessed | Normal areas | Hyperlucent areas | Vascular distortion | Bullae | Mosaic perfusion | Air trapping | Bronchiectasis | Mucoid impaction | Atelectasis | Airspace opacity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ≥80% | 21 | 105 | 82 | 0 | 0 | 0 | 7.6 | 0 | 4.8 | 0 | 0 | 0 |
| 60–79% | 15 | 75 | 84 | 0 | 0 | 0 | 6.7 | 0 | 1.3 | 0 | 0 | 1.3 |
| <60% | 13 | 65 | 52 | 16.9 | 24.6 | 12.3 | 13.8 | 7.7 | 24.6 | 0 | 7.7 | 4.6 |