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. 2022 Dec 1;11(1):1–11. doi: 10.1007/s40134-022-00405-w

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Fig. 11 — Quantitative analysis of airways and pulmonary emphysema can be done with commercial software, in order to quantify the extent of the disease and to differentiate the contribution of small airways and emphysema in COPD (Courtesy of Lucio Calandriello)