Fig. 4.

Each prepared input array sequence has two annotations at most: lesion mask (indispensable) and the disparate symptom period (dispensable). From 0 to 3, the discrete labels indicate four lesion statuses: healthy, early stage, advanced stage, and severe stage. Our radiologists gave the label to every isolated lesion slice mentioned in section 2.1. But for data exhibited in this figure, we only gave the label to the lesion entities.