Pre-training nnU-Net and MedNeXt on BraTS 2025 data then fine-tuning on BraTS-Africa with added topology refinement yields NSD scores of 0.810, 0.829, and 0.895 for SNFH, NETC, and ET.
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Topology-Driven Fusion of nnU-Net and MedNeXt for Accurate Brain Tumor Segmentation on Sub-Saharan Africa Dataset
Pre-training nnU-Net and MedNeXt on BraTS 2025 data then fine-tuning on BraTS-Africa with added topology refinement yields NSD scores of 0.810, 0.829, and 0.895 for SNFH, NETC, and ET.