Fully Automated Delineation of Gross Tumor Volume for Head and Neck Cancer on PET-CT Using Deep Learning: A Dual-Center Study

Figure 7

An example of the feature maps in the fourth upsampling block. (a) A low-resolution scores map after the fourth deconvolution layer in the reconstruction phase. (b) A high-resolution feature map after the fourth pooling layer in the feature representation phase. (c) The scores map after the fusion of low- and high-resolution maps. (d) The gold standard of gross tumor volume of the example (red line).

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