Table 2 Correlation between CT parameters and pulmonary function indices
| Â | FEV1 | FEV1% pred | FVC | FEV1/FVC | VC% | DLco% | RV/TLC |
|---|---|---|---|---|---|---|---|
EI | − 0.17 (0.02) | − 0.22 (0.002) | 0.22 (0.002) | − 0.51 (< 0.001) | 0.15 (0.04) | − 0.17 (0.02) | 0.28 (< 0.001) |
ATI | − 0.16 (0.03) | − 0.22 (0.002) | 0.04 (0.58) | − 0.28 (< 0.001) | − 0.01 (0.94) | − 0.17 (0.02) | 0.25 (< 0.001) |
Inspiratory MLD | − 0.05 (0.51) | 0.005 (0.95) | − 0.32 (< 0.001) | 0.29 (< 0.001) | − 0.27 (< 0.001) | 0.05 (0.48) | − 0.10 (0.18) |
PI-1 | 0.19 (0.01) | 0.25 (< 0.001) | − 0.17 (0.02) | 0.51 (< 0.001) | − 0.13 (0.08) | 0.20 (0.006) | − 0.28 (< 0.001) |
PI-15 | 0.12 (0.10) | 0.19 (0.009) | − 0.25 (< 0.001) | 0.48 (< 0.001) | − 0.17 (0.02) | 0.16 (0.03) | − 0.25 (< 0.001) |
PRMEmph | − 0.18 (0.01) | − 0.27 (< 0.001) | 0.23 (0.002) | − 0.55 (< 0.001) | 0.13 (0.07) | − 0.21 (0.003) | 0.30 (< 0.001) |
PRMfSAD | − 0.20 (0.006) | − 0.25 (< 0.001) | 0.01 (0.86) | − 0.35 (< 0.001) | − 0.04 (0.63) | − 0.23 (0.002) | 0.28 (< 0.001) |
PRMNormal | 0.25 (< 0.001) | 0.33 (< 0.001) | − 0.07 (0.30) | 0.49 (< 0.001) | 0.01 (0.90) | − 0.27 (< 0.001) | − 0.33 (< 0.001) |
Pi10 | − 0.37 (< 0.001) | − 0.33 (< 0.001) | − 0.36 (< 0.001) | − 0.11 (0.14) | − 0.32 (< 0.001) | − 0.03 (0.64) | 0.23 (0.001) |
Wall area | − 0.30 (< 0.001) | − 0.25 (0.001) | − 0.27 (< 0.001) | − 0.13 (0.08) | − 0.24 (0.001) | − 0.04 (0.55) | 0.30 (< 0.001) |
Lumen area | 0.28 (< 0.001) | 0.26 (< 0.001) | 0.31 (< 0.001) | 0.04 (0.59) | 0.27 (< 0.001) | − 0.04 (0.62) | − 0.18 (0.01) |
Number of vessels | 0.20 (0.005) | 0.16 (0.03) | 0.10 (0.18) | 0.22 (0.003) | 0.08 (0.28) | 0.18 (0.01) | − 0.13 (0.06) |
Number of vessels under 5 mm2 | 0.24 (0.001) | 0.21 (0.004) | 0.11 (0.11) | 0.25 (< 0.001) | 0.11 (0.12) | 0.20 (0.006) | − 0.17 (0.02) |
Average diameter of vessels | − 0.26 (< 0.001) | − 0.31 (< 0.001) | − 0.15 (0.04) | − 0.20 (0.004) | − 0.26 (< 0.001) | − 0.16 (0.03) | 0.23 (0.001) |
Surface LAA | − 0.12 (0.11) | − 0.23 (0.001) | 0.29 (< 0.001) | − 0.51 (< 0.001) | 0.16 (0.03) | − 0.21 (0.003) | 0.28 (< 0.001) |