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. 2022 May 17;304(3):672–679. doi: 10.1148/radiol.213054

Figure 2:

Inspiratory axial noncontrast CT scans obtained at baseline and 5-year-follow-up in two participants demonstrate emphysema progression according to the deep learning automated method. (A) Baseline scan shows mild emphysema in a 49-year-old man. (B) Image obtained at 5-year follow-up shows progression to moderate emphysema. Forced expiratory volume in 1 second (FEV1) decreased by 677 mL. (C) Baseline scan shows moderate emphysema in a 62-year-old man. (D) Image obtained at 5-year follow-up shows progression to confluent emphysema. FEV1 decreased by 502 mL.

Inspiratory axial noncontrast CT scans obtained at baseline and 5-year-follow-up in two participants demonstrate emphysema progression according to the deep learning automated method. (A) Baseline scan shows mild emphysema in a 49-year-old man. (B) Image obtained at 5-year follow-up shows progression to moderate emphysema. Forced expiratory volume in 1 second (FEV1) decreased by 677 mL. (C) Baseline scan shows moderate emphysema in a 62-year-old man. (D) Image obtained at 5-year follow-up shows progression to confluent emphysema. FEV1 decreased by 502 mL.