Mean (SD) LAA% of eight patients with COPD in both the supine and prone positions
| Supine | Prone | ||||||
|---|---|---|---|---|---|---|---|
| i-LAA% | o-LAA% | i-LAA% | o-LAA% | ||||
| Total (T) | 60.6 (10.0)4-150 | 47.5 (7.9) | 58.2 (10.1)4-150 | 44.5 (8.5) | |||
| Upper (U) | 60.0 (14.0)4-150 | 46.6 (11.8) | 56.9 (13.0)4-150 | 44.1 (10.7) | |||
| Middle (M) | 62.2 (11.6)4-150 | 48.9 (7.3) | 53.5 (12.2)4-150 | 41.7 (9.4) | |||
| Lower (L) | 58.8 (15.2)4-150 | 46.0 (14.7) | 62.8 (14.4)4-150 | 46.9 (11.6) | |||
↵4-150 p = 0.0117 compared with the corresponding o-LAA%.
LAA% = percentage ratio of low attenuation area to the lung area; i = inner segment; o = outer segment.