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. 2017 May 26;12:1579–1587. doi: 10.2147/COPD.S131847

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© 2017 Bajc et al. This work is published and licensed by Dove Medical Press Limited

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Correlation between Vgrade and TPLF% and results of the technically accepted and reproducible pulmonary lung function tests.

Note: Pearson’s correlation coefficients and linear regression lines with best-fit values (continuous line) and 95% confidence intervals (dotted lines) are presented.

Abbreviations: FEV₁, forced expiratory volume in 1 second; FVC, forced vital capacity; TPLF%, total preserved lung function; SPECT, single-photon emission computed tomography; Vgrade, penetration grade of Technegas in V SPECT.