Figure 1

Representative class activation maps (CAMs) with correct lesion localization. (a,b) Cardiomegaly (PA), (c,d) Other interstitial opacity (PA), (e,f) Pleural effusion (PA), (g,h) Pneumonia (PA), (i,j) Pneumonia (AP), (k,l) Pneumothorax (PA), (m,n) Atelectasis (AP), (o,p) Fracture (AP), (q,r) Pulmonary edema (PA).