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MedCoT: Medical Chain of Thought via Hierarchical Expert

2024-12-18 · Jiaxiang Liu, YuAn Wang, Jiawei Du, Joey Tianyi Zhou, Zuozhu Liu

Artificial intelligence has advanced in Medical Visual Question Answering (Med-VQA), but prevalent research tends to focus on the accuracy of the answers, often overlooking the reasoning paths and interpretability, which are crucial in clinical settings. Besides, current Med-VQA algorithms, typically reliant on singular models, lack the robustness needed for real-world medical diagnostics which usually require collaborative expert evaluation. To address these shortcomings, this paper presents MedCoT, a novel hierarchical expert verification reasoning chain method designed to enhance interpretability and accuracy in biomedical imaging inquiries. MedCoT is predicated on two principles: The necessity for explicit reasoning paths in Med-VQA and the requirement for multi-expert review to formulate accurate conclusions. The methodology involves an Initial Specialist proposing diagnostic rationales, followed by a Follow-up Specialist who validates these rationales, and finally, a consensus is reached through a vote among a sparse Mixture of Experts within the locally deployed Diagnostic Specialist, which then provides the definitive diagnosis. Experimental evaluations on four standard Med-VQA datasets demonstrate that MedCoT surpasses existing state-of-the-art approaches, providing significant improvements in performance and interpretability.

📄 PDF Abstract BibTeX arXiv:2412.13736

Code (1)

jxliu-ai/medcot 공식 구현 pytorch

Tasks

DiagnosticMedical Visual Question AnsweringMixture-of-ExpertsQuestion AnsweringVisual Question AnsweringVisual Question Answering (VQA)

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