Figure 2. Correlations between lung volume (LV) expiratory/inspiratory (E/I) ratio and lung function.




Correlations between LV E/I ratio and PFT values are demonstrated. LV E/I ratio shows moderate correlations with FEV1%P, FEV1/FVC, and RV/TLC (A, B, C). A weak correlation is observed with DLco%P (D).