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Representative images segmentation (A1–A3 for the axilla; B1–B3 for the visible ALNs; C1–C4 for the primary tumor with non-bpCR; D1–D4 for the primary tumor with bpCR; C1 and D1 were the pre-NAC MRIs, while C2 and D2 were the post-NAC MRIs). A3, B3, and C4 were automatically segmented by the deep learning model. The breast tumor bed (D3) was manually segmented based on the anatomical landmarks according to the pre-NAC MRI (D1).
