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. 2020 Jul 7;296(3):641–649. doi: 10.1148/radiol.2020192429

Figure 3a:

Baseline and 5-year follow up inspiratory CT scans in two Global Initiative for Chronic Obstructive Lung Disease stage 0 participants showing no progression and progression. (a) Baseline and (b) 5-year follow-up scans in a 55-year-old female participant without visually evident emphysema and no interval progression at follow-up. Forced expiratory volume in 1 second (FEV1) decreased by 62 mL. (c) Baseline and (d) 5-year follow-up scans in a 49-year-old male participant with trace emphysema at baseline but progression to moderate emphysema at follow-up. FEV1 decreased by 780 mL between visits.

Baseline and 5-year follow up inspiratory CT scans in two Global Initiative for Chronic Obstructive Lung Disease stage 0 participants showing no progression and progression. (a) Baseline and (b) 5-year follow-up scans in a 55-year-old female participant without visually evident emphysema and no interval progression at follow-up. Forced expiratory volume in 1 second (FEV1) decreased by 62 mL. (c) Baseline and (d) 5-year follow-up scans in a 49-year-old male participant with trace emphysema at baseline but progression to moderate emphysema at follow-up. FEV1 decreased by 780 mL between visits.