From: Extrapolation in the analysis of lung aeration by computed tomography: a validation study
 | Normal lung CT scans | Lung CT scans with opacification | ||
---|---|---|---|---|
 | sheep ( n = 66) | pigs ( n = 14) | sheep ( n = 102) | pigs ( n = 41) |
Vtotal (ml) | 3,748 (2,245 to 5,638) | 2,308 (1,114 to 3,061) | 2,827 (1,338 to 4,252) | 1,868 (698 to 3,184) |
Vnon (%) | 0.5 (0.0 to 0.8) | 0.1 (0.0 to 1.2) | 3.9 (0.3 to 32.2) | 3.6 (0.0 to 43.5) |
Vpoor (%) | 3.4 (1.4 to 10.7) | 2.3 (0.8 to 10.7) | 10.7 (3.5 to 46.7) | 27.8 (4.3 to 59.1) |
Vnormal (%) | 93.7 (88.4 to 97.5) | 94.7 (88.9 to 98.2) | 82.4 (33.5 to 94.1) | 68.5 (22.5 to 95.5) |
Vhyper (%) | 1.4 (0.1 to 5.6) | 1.8 (0.3 to 4.9) | 0.7 (0.0 to 8.0) | 0.1 (0.0 to 2.0) |
Mtotal (g) | 891 (694 to 1,116) | 505 (397 to 703) | 888 (660 to 1,246) | 795 (346 to 1,564) |
Mnon (%) | 1.9 (0.2 to 2.8) | 0.3 (0.0 to 5.3) | 10.6 (1.3 to 56.0) | 10.1 (0.0 to 58.5) |
Mpoor (%) | 8.7 (4.7 to 18.8) | 5.8 (2.5 to 17.8) | 22.2 (9.2 to 60.2) | 35.3 (7.4 to 67.1) |
Mnormal (%) | 88.3 (78.9 to 93.2) | 90.3 (77.5 to 96.9) | 61.3 (18.5 to 87.0) | 48.1 (10.2 to 92.5) |
Mhyper (%) | 0.5 (0.0 to 2.2) | 0.5 (0.1 to 2.4) | 0.1 (0.0 to 3.2) | 0.0 (0.0 to 0.6) |
Vgas (ml) | 2,855 (1,479 to 4,556) | 1,761 (717 to 2,523) | 1,904 (482 to 3,133) | 1,085 (196 to 2,169) |
Vgas (%) | 76.4 (65.9 to 80.8) | 76.7 (64.4 to 82.4) | 66.9 (32.8 to 78.0) | 55.4 (24.8 to 73.2) |