Pulmonary Emphysema in Cystic Fibrosis Detected by Densitometry on Chest Multidetector Computed Tomography
Figure 3
Emphysema severity correlates with impairment in lung function in cystic fibrosis (CF).
(A–C) Dot plots with linear regression curves for emphysema index (EI) plotted against forced expiratory volume in 1 s percent predicted (FEV1%) (A), residual volume (RV) (B), and RV as ratio of total lung capacity (RV/TLC) (C) for patients with CF and the non-CF control group (CONTROL). Spearman rank order correlation coefficients (rs) are given for each plot. * P<0.05/7 (Bonferroni’s method, see Table 2).