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A generalizable structural brain MRI foundation model built through dual-priority federated pretraining

Research Medical/Healthcare AI

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TL;DR - BrainFedFM is a structural brain MRI foundation model pretrained federatively on 164,707 scans across 42 sites, avoiding the need to pool sensitive raw images. Its dual-priority training approach achieved leading average performance across diverse neuroimaging tasks and improved robustness for underrepresented populations.

  • Spatial-priority masking emphasizes informative anatomical regions during local site training.
  • Site-priority server aggregation weights complementary contributions beyond cohort size alone.
  • Evaluation covered 20 datasets and 17 classification, regression, and segmentation tasks.
  • BrainFedFM ranked first on average among seven models, including four centralized foundation models, with especially consistent gains in classification and regression.

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A generalizable structural brain MRI foundation model built through dual-priority federated pretraining

arXiv cs.CV Zhen Yu, Yang Liu, Xiahai Zhuang, Qingchao Chen 2026-09-23 arXiv:2609.27611
Public signals Semantic Scholar citations 0 · Semantic Scholar influential citations 0
Providers: Hugging Face · N/A OpenAlex · N/A Publisher · N/A Semantic Scholar · Citations 0 · Influential citations 0 X · N/A Fetched 2026-09-26 14:14:22.426302 UTC

TL;DR - BrainFedFM is a structural brain MRI foundation model pretrained federatively on 164,707 scans across 42 sites, avoiding the need to pool sensitive raw images. Its dual-priority training approach achieved leading average performance across diverse neuroimaging tasks and improved robustness for underrepresented populations.

  • Spatial-priority masking emphasizes informative anatomical regions during local site training.
  • Site-priority server aggregation weights complementary contributions beyond cohort size alone.
  • Evaluation covered 20 datasets and 17 classification, regression, and segmentation tasks.
  • BrainFedFM ranked first on average among seven models, including four centralized foundation models, with especially consistent gains in classification and regression.
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