Baseline | 1 month | 3 months | 6 months | |
Subjects n | 57 | 34 | 34 | 16 |
Total lung | ||||
Volume mL | 6840±1375 | 6737±1383 | 6852±1456 | 6429±1605 |
Difference mL | -54±495 | -45±347 | 39±305 | |
% change | -0.6±7.8 | -0.9±5.4 | 0.6±5.3 | |
Upper lobe | ||||
Volume mL | 3419±872 | 3058±845# | 3165±976# | 3025±1212*** |
Difference mL | -328±511# | -319±427# | -335±444*** | |
% change | -9.3±14.1 | -9.5±12.2 | -10.2±12.7 | |
Nonupper lobe | ||||
Volume mL | 3421± 867 | 3679±869# | 3687±982# | 3404±1025# |
Difference mL | 274±419# | 274±334# | 374±387# | |
% change | 9.2±13.9 | 8.4±10.2 | 11.6±11.6 | |
Total lung | ||||
Mass g | 728±183 | 714±165 | 715±181 | 680±195 |
Difference g | 2±126 | -15±139 | -62±108 | |
% change | 1.2±15.3 | -0.6±16.6 | −7.3±13.0 | |
Upper lobe | ||||
Mass g | 301±90 | 259±75** | 266±111*** | 238±99*** |
Difference g | -36±67** | -37±72*** | -71±63*** | |
% change | -10.5±19.3 | -12.3±19.5 | -22.6±15.9 | |
Nonupper lobe | ||||
Mass g | 427±111 | 455±105 | 449±86 | 442±113 |
Difference g | 37±75* | 22±96 | 9±71 | |
% change | 10.2±16.8 | 8.0±17.5 | 3.0±15.0 | |
Total lung | ||||
Density g·mL−1 | 0.108±0.026 | 0.107±0.020 | 0.105±0.019 | 0.107±0.021 |
Difference g·mL−1 | 0.000±0.026 | -0.001±0.020 | -0.012±0.025 | |
% change | 2.8±19.2 | 0.5±17.2 | -7.2±16.0 | |
Upper lobe | ||||
Density g·mL−1 | 0.090±0.024 | 0.087±0.020 | 0.084±0.022 | 0.080±0.022 |
Difference g·mL−1 | -0.003±0.028 | -0.003±0.019 | -0.016±0.028* | |
% change | 1.2±27.3 | -1.9±22.5 | -12.1±22.4 | |
Nonupper lobe | ||||
Density g·mL−1 | 0.129±0.037 | 0.126±0.023 | 0.128±0.035 | 0.136±0.040 |
Difference g·mL−1 | -0.002±0.027 | -0.002±0.028 | -0.013±0.024 | |
% change | 1.8±16.1 | 0.0±16.2 | -7.3±12.8 |
Data are presented as mean±sd, unless otherwise stated. #: p<0.0001. *: p<0.05; **: p<0.01; ***: p<0.001.