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. 2021 Feb 3;69:101978. doi: 10.1016/j.media.2021.101978

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Fig. 7 — A CT slice is divided to 12 patches. For the relative patch location task, we are able to create 16 pairs of patches: $(a_{0}, a_{1}), \dots, (a_{0}, a_{8})$ and $(b_{0}, b_{1}), \dots, (b_{0}, b_{8})$ . For the absolute patch location task, we directly predict each patch’s location among $l_{1}, \dots l_{12}$ .