Multi-Institutional Deep Learning Modeling Without Sharing Patient Data: A Feasibility Study on Brain Tumor Segmentation
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Abstract (arXiv)
Deep learning models for semantic segmentation of images require large amounts of data. In the medical imaging domain, acquiring sufficient data is a significant challenge. Labeling medical image data requires expert knowledge. Collaboration between institutions could address this challenge, but sharing medical data to a centralized location faces various legal, privacy, technical, and data-ownership challenges, especially among international institutions. In this study, we introduce the first use of federated learning for multi-institutional collaboration, enabling deep learning modeling without sharing patient data. Our quantitative results demonstrate that the performance of federated semantic segmentation models (Dice=0.852) on multimodal brain scans is similar to that of models trained by sharing data (Dice=0.862). We compare federated learning with two alternative collaborative learning methods and find that they fail to match the performance of federated learning.
Key facts. Cited by 148 papers in the map (data through 7 Oct 2026). First posted on arXiv 10 Oct 2018.
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Citing papers per year: 2021: 42; 2022: 40; 2023: 18; 2024: 22; 2025: 18; 2026: 8.
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- 2021Distributed Learning in Wireless Networks: Recent Progress and Future Challengescited by 125
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- 2022Improving Generalization in Federated Learning by Seeking Flat Minimacited by 98
- 2021MedPerf: Open Benchmarking Platform for Medical Artificial Intelligence using Federated Evaluationcited by 88
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- 2026Attention, Anomalies! Handling Attention Layers in Unsupervised Federated Outlier Detection5 Aug 2026
- 2026Evaluating Federated Learning approaches for mammography under breast density heterogeneity9 May 2026
- 2026MedFL-Stress: A Systematic Robustness Evaluation of Federated Brain Tumor Segmentation under Cross-Hospital MRI Appearance Shift9 May 2026
- 2026FedAgain: A Trust-Based and Robust Federated Learning Strategy for an Automated Kidney Stone Identification in Ureteroscopy19 Mar 2026
- 2026Personalized Federated Learning via Gaussian Generative Modeling12 Mar 2026
- 2026Resource-Adaptive Federated Text Generation with Differential Privacy7 Mar 2026
- 2025FedPOD: the deployable units of training for federated learning23 Dec 2025
- 2025Training Together, Diagnosing Better: Federated Learning for Collagen VI-Related Dystrophies18 Dec 2025
- 2025The MICCAI Federated Tumor Segmentation (FeTS) Challenge 2024: Efficient and Robust Aggregation Methods for Federated Learning5 Dec 2025
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