In Figure 4A, the results showed that CT models tended to highlight the areas near the edge of the tumor and PET models frequently annotated a more diffuse region around the center of the lesion as EGFR mutant type, whereas in Figure 4B, CT models based on the pattern of central areas and PET models based on the pattern of the surrounding area of the tumor explain these tumors as wild-type ones. Here, EGFR is linked to neoplasm.