Figure 4a:

CT images show application of categorical CT-GAP model in two patient examples. Patient 1 (a–c, upper, middle, and lower lung, respectively) is a 71-year-old woman with low fibrosis score of 4 and no emphysema. FVC was 81% of predicted, and DLCO was 61% of that predicted. Patient was alive after 3.4 years of follow-up. Estimated 1-year risk of death according to CT-GAP model was 7.3% (95% CI: 3.5%, 13.1%). Patient 2 (d–f, upper, middle, and lower lung, respectively) was a 75-year-old man with high fibrosis score of 42 and no emphysema. FVC was 46% of that predicted, and DLCO was 48% of that predicted. Patient died 163 days after evaluation. Estimated one-year risk of death according to CT-GAP model was 45.2% (95% CI: 32.8%, 56.6%).