Fig. 4From: A convolutional neural network-based system to classify patients using FDG PET/CT examinationsVisualization of classification standard of CNN. a Examples of original images input to CNN. b Examples of images activated area with the cut-off of 70% maximum by Grad-CAM, highlighting the area of malignant uptake. c Examples of images activated area with the cut-off of 90% maximum by Grad-CAM, highlighting the area of malignant uptakeBack to article page