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. Author manuscript; available in PMC: 2019 Oct 25.
Published in final edited form as: Med Image Comput Comput Assist Interv. 2017 Sep 4;10435:374–381. doi: 10.1007/978-3-319-66179-7_43

Fig. 6.

Fig. 6.

Applying grad-CAM to last convolution layer. This illustrates the important spatial areas from the second to last convolution layer that are responsible for activating each of the 64 filters in the last convolution layer. Activations corresponding to the Fig. 4 grad-CAM features are highlighted by orange boxes.