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<p>The rapid expansion of chemical and biomedical imaging-from Magnetic Resonance Imaging (MRI), Computed Tomography (CT), ultrasound, and histopathology to biosensor and wearable outputs-allows unparalleled opportunities for early diagnosis, precision monitoring, and personalized care. Traditional AI pipelines, however, rely on the centralization of sensitive clinical data, which in general is not feasible because privacy regulations, institutional policies, and variable hardware across imaging systems often prohibit it. Federated learning (FL) overcomes such limitations by enabling multi-institutional training of AI without transferring raw images or patient records. Instead, local models learn from site-specific imaging and physiological data, and only model updates are shared across collaborating sites, thereby reducing direct exposure of raw patient data and improving regulatory alignment; however, confidentiality is not automatic and depends on additional safeguards against risks such as gradient leakage, model inversion, and membership inference attacks. In this review, we conduct a literature review of FL in healthcare including practical applications from multiple areas of study, Biomedical Imaging, Electronic Health Records, Physiological/Chemical Signals, Chronic Disease Management, Elder Care, and Clinical Decision Support, among others. In addition to providing insight into the successes, we outline the key barriers to implementing FL including system heterogeneity, data imbalance, communication bottlenecks, and issues related to fairness. Tying together research and practice we also offer actionable advice to regulators, developers, and healthcare systems for how to move forwards towards safe, equitable and cross geographical FL systems in medicine.</p>

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Federated Learning in Multimodal Healthcare Diagnostics: Privacy-Preserving AI for Biomedical Imaging, Electronic Health Records, Wearables, and Clinical Decision Support

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月30日

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  • Shon Nemane,
  • Vaishnavi M. Sarad,
  • Dhiraj P. Tulaskar,
  • Tejrao Panjabrao Marode,
  • Vikas Bhangdiya,
  • Lalit Agrawal,
  • Ankita Avthankar,
  • Haridimos Kondylakis,
  • Madhusudan B. Kulkarni,
  • Manish Bhaiyya,
  • Hossam Haick

摘要

The rapid expansion of chemical and biomedical imaging-from Magnetic Resonance Imaging (MRI), Computed Tomography (CT), ultrasound, and histopathology to biosensor and wearable outputs-allows unparalleled opportunities for early diagnosis, precision monitoring, and personalized care. Traditional AI pipelines, however, rely on the centralization of sensitive clinical data, which in general is not feasible because privacy regulations, institutional policies, and variable hardware across imaging systems often prohibit it. Federated learning (FL) overcomes such limitations by enabling multi-institutional training of AI without transferring raw images or patient records. Instead, local models learn from site-specific imaging and physiological data, and only model updates are shared across collaborating sites, thereby reducing direct exposure of raw patient data and improving regulatory alignment; however, confidentiality is not automatic and depends on additional safeguards against risks such as gradient leakage, model inversion, and membership inference attacks. In this review, we conduct a literature review of FL in healthcare including practical applications from multiple areas of study, Biomedical Imaging, Electronic Health Records, Physiological/Chemical Signals, Chronic Disease Management, Elder Care, and Clinical Decision Support, among others. In addition to providing insight into the successes, we outline the key barriers to implementing FL including system heterogeneity, data imbalance, communication bottlenecks, and issues related to fairness. Tying together research and practice we also offer actionable advice to regulators, developers, and healthcare systems for how to move forwards towards safe, equitable and cross geographical FL systems in medicine.