Computed tomographic morphometry before and after lung volume reduction surgery (LVRS)
| Before LVRS | 3 months after LVRS | |
|---|---|---|
| *p<0.03 v preoperative value. | ||
| †p<0.05 v apical region. | ||
| TLV (ml) | 6667 (1284) | 5779 (1221)* |
| % Emphysema | ||
| Whole lung | 47 (10) | 39 (11)* |
| Apical region | 56 (18) | 42 (13)* |
| Basal region | 42 (10)† | 33 (11)*† |
| Power law exponent (D) | ||
| Whole lung | 0.56 (0.07) | 0.60 (0.10)* |
| Apical region | 0.51 (0.16) | 0.50 (0.10) |
| Basal region | 0.59 (0.11)† | 0.61 (0.08)† |