Histological measures of the two cohorts
| All subjects | Cohort for 3D reconstruction | Cohort for 2D analysis | |
| Subjects | 37 | 18 | 19 |
| Estimated proportion of lung structures | |||
| Alveolar space % | 81 (8.8) | 83 (6.1) | 80 (11) |
| Alveolar septa % | 14 (6.8) | 14 (5.6) | 14 (6.1) |
| Vessels % | 4.2 (2.8) | 4.1 (1.4) | 4.4 (4.2) |
| Bronchi % | 0.5 (0.7) | 0.5 (0.7) | 0.0 (0.7) |
| Cross-sectional area of vessels <500 µm diameter % total area | 6.3 (2.2) | 6.3 (1.7) | 6.1 (3.1) |
| Morphometry of pulmonary muscular arteries | |||
| External diameter μm | 277 (96.0) | 266 (93.7) | 278 (97.5) |
| Lumen % vessel area | 41 (16) | 41 (9) | 41 (18) |
| Intima % vessel area | 30 (11) | 31 (12) | 28 (10) |
| Muscularis % vessel area | 24 (7) | 25 (6) | 23 (9) |
Data are presented as n or median (interquartile range). 3D: three-dimensional; 2D: two-dimensional.