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. Author manuscript; available in PMC: 2023 Apr 1.
Published in final edited form as: Comput Methods Programs Biomed. 2022 Aug 4;225:107058. doi: 10.1016/j.cmpb.2022.107058

Fig. 1.

Fig. 1.

Heatmaps obtained with Grad-CAM (bottom row) on the input VFSS frames (top row) during the swallow of a bolus. Warmer colors correspond to parts of the images where the CNN attention goes to classify the VFSS frames as belonging to the pharyngeal phase or not. Examples obtained with CNN4 (see Section 2.4).