Breast Cancer Segmentation and Diagnosis in Mammography: Toward a Pan-European Virtual Biopsy Framework
Marfil, M.; Bonmati, L. M.
Show abstract
BackgroundMost mammographic AI stops at a binary cancer decision and ignores the histopathologic information that guides therapy. PurposeTo build an end-to-end virtual-biopsy pipeline that simultaneously segments tumours and predicts pT, pN, cM and molecular subtype across scanners and countries. Materials and MethodsA residual U-Net was trained on 8 469 public mammograms and externally tested on 200 cases from six ChAImeleon sites. From each mask we derived 1 559 radiomics, 5 120 RadImageNet embeddings and 12 clinical covariates; a 5 x 3 nested cross-validation tuned an RBF-SVM/XGBoost/MLP ensemble with a random-forest meta-learner. ResultsExternal Dice was 0.458; adding benign masks cut false-positive pixels by 19% but left Dice unchanged (0.455).
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