Table 2 Agreement between extrapolation from 10 CT slices and whole-lung analysis
From: Extrapolation in the analysis of lung aeration by computed tomography: a validation study
| Â | Normal lung CT scans | Lung CT scans with opacification | ||
|---|---|---|---|---|
| Â | sheep ( n = 66) | pigs ( n = 14) | sheep ( n = 102) | pigs ( n = 41) |
Vtotal (ml) | 19.6 (-64.6 to 103.8) | 14.5 (-26.7 to 55.8) | 17.6 (-52.2 to 87.5) | 1.8 (-62.9 to 66.5) |
Vnon (%) | 0.0 (-0.2 to 0.2) | 0.0 (-0.2 to 0.2) | 0.0 (-0.7 to 0.6) | 0.0 (-1.2 to 1.2) |
Vpoor (%) | 0.0 (-0.5 to 0.5) | 0.1 (-0.5 to 0.7) | -0.3 (-1.8 to 1.2) | 0.1 (-1.9 to 2.0) |
Vnormal (%) | 0.1 (-0.8 to 0.9) | -0.1 (-0.5 to 0.4) | 0.3 (-1.4 to 2.0) | -0.1 (-2.1 to 1.9) |
Vhyper (%) | -0.1 (-0.7 to 0.6) | 0.0 (-0.7 to 0.7) | 0.0 (-0.4 to 0.5) | 0.0 (-0.2 to 0.1) |
Mtotal (g) | 6.1 (-19.6 to 31.9) | 3.3 (-11.6 to 18.2) | 2.9 (-23.1 to 29.0) | 1.0 (-38.1 to 40.2) |
Mnon (%) | 0.1 (-0.6 to 0.7) | -0.1 (-0.9 to 0.7) | 0.0 (-1.4 to 1.3) | 0.0 (-1.4 to 1.4) |
Mpoor (%) | -0.1 (-1.1 to 1.0) | 0.3 (-1.0 to 1.6) | -0.3 (-2.1 to 1.4) | 0.1 (-2.0 to 2.2) |
Mnormal (%) | 0.0 (-1.4 to 1.4) | -0.2 (-1.4 to 1.0) | 0.4 (-1.4 to 2.2) | -0.1 (-2.0 to 1.8) |
Mhyper(%) | 0.0 (-0.3 to 0.2) | 0.0 (-0.3 to 0.3) | 0.0 (-0.1 to 0.1) | 0.0 (0.0 to 0.0) |
Vgas (ml) | 13.5 (-51.5 to 78.4) | 11.2 (-25.4 to 47.8) | 14.7 (-39.8 to 69.2) | 0.8 (-37.7 to 39.3) |
Vgas (%) | 0.0 (-0.4 to 0.4) | 0.0 (-0.5 to 0.6) | 0.2 (-0.7 to 1.1) | -0.1 (1.2 to 1.1) |