Regression activation mapping on the cortical surface using graph convolutional networks

Apr 12, 2019 MIDL 2019 Conference Abstract Submission readers: everyone Show Bibtex
  • Abstract: Saliency mapping on graph convolutional networks (GCNs) is important for model interpretability and has not yet been investigated for regression GCNs employing graph downsampling. We examined regression activation mapping for localizing the salient regions identified by GCNs. We first demonstrated using simulations that it is possible to generate precise vertex-wise saliency maps on the cortical surface mesh and then applied this method to age prediction using cortical surfaces derived from neonatal structural MRI.
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