Fig. 3. Representative case of false positive identification on CXR.

A. CXR of patient with negative real-time reverse transcriptase-polymerase chain reaction result shows increased opacities at both lower lung fields. B. Computer-aided detection system classified CXR as abnormal with probability score of 63%, and localized opacities in both lower lung fields. C, D. Formal radiology report indicated presence of parenchymal infiltration at right lower lung and possibility of pneumonia. Chest computed tomography images obtained on same day exhibited bilateral pleural effusion, without relevant parenchymal abnormality.