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Fig. 3A. —Artificial neural network (ANN) output obtained by two radiologists' ratings of features for case shown in Figure 2. NSIP = nonspecific interstitial pneumonia, UIP = usual interstitial pneumonia, BOOP = bronchiolitis obliterans with organizing pneumonia, CEP = chronic eosinophilic pneumonia, ca = carcinomatosis, Tb. = tuberculosis, DPB = diffuse panbronchiolitis, PAP = pulmonary alveolar proteinosis, LAM = lymphangiomyomatosis, PCP = Pneumocystis carinii pneumonia, CMV = cytomegalovirus. Graphs show largest output values among 11 diseases correspond to correct diagnosis for observer B, a chest radiologist (A), Chest Imaging and observer G, a general radiologist (B).