Table 1.
Patient characteristics
| Mean ± SD | Range | ||
|---|---|---|---|
| Age (years) | 67 ± 8 | 40 – 87 | |
| BMI (kg/m2) | 22.2 ± 3.5 | 13.4 – 38.3 | |
| 3D-CT volumetry | |||
| TLV (mL) | 4494 ± 1092 | 1507 – 7668 | |
| LAV (mL) | 267 ± 509 | 0 – 3825 | |
| LAV% (%) | 5.0 ± 8.4 | 0 – 51.6 | |
| Spirometry | |||
| %VC (%) | 108.0 ± 17.5 | 62.6 – 199.0 | |
| FEV1% (%) | 71.0 ± 10.5 | 25.6 – 98.0 | |
| %DLco/VA (%) | 95.9 ± 27.9 | 23.7 – 181.5 | |
BMI, body mass index; 3D-CT, three-dimensional computed tomography; TLV, total lung volume; LAV, low-attenuation volume; VC, vital capacity; FEV1, forced expiratory volume in 1 second; DLco, carbon monoxide diffusing capacity; VA, alveolar ventilation