Table 1. Dimension of normal and diseased airways.
| A0 | A1 | A2 | A3 | A4 | |
|---|---|---|---|---|---|
| Minimum bronchiole diameter (mm) | 3.74 | 1.88 | 1.13 | 0.87 | 0.25 |
| Minimum cross-sectional area (mm2) | 11.0 | 2.8 | 1.0 | 0.6 | 0.05 |
| Affected bronchiole volume (mm3) | 189.9 | 77.6 | 50.5 | 46.6 | 37.9 |
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