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arXiv 2605.26483cs.CV

基于临床基础的反事实推理用于医学视频诊断

Clinically-Grounded Counterfactual Reasoning for Medical Video Diagnosis

Center for Data Science in Clinical Medicine(临床医学数据科学中心);The State Key Lab of Brain-Machine Intelligence(脑机智能国家重点实验室);Department of Gynecology and Obstetrics, 7th Medical Center of Chinese PLA General Hospital(中国人民解放军第七医学中心妇产科部);School of Computer Science, Peking University(北京大学计算机学院);School of Psychological and Cognitive Sciences, Peking University(北京大学心理学与认知科学学院);State Key Lab of General AI, Peking University(通用人工智能国家重点实验室);Nat’l Eng. Research Center of Visual Technology(视觉技术国家工程研究中心);Beijing Key Laboratory of Behavior and Mental Health(北京行为与心理健康重点实验室);Embodied Intelligence Lab, PKU-Wuhan Institute for Artificial Intelligence(具身智能实验室,北京大学-武汉人工智能研究院)

Jianzhe Gao, Churan Wang, Weiyi Zhang, Jianghua Li, Li-An Li, Wenguan Wang, Yixin Zhu, Yizhou Wang

AI总结:

提出MedVCR反事实推理框架,通过扩散生成器合成病理组织演变、临床规则编码诊断知识及双重诊断预测策略,在医学视频诊断任务上提升2.6%-10.2%性能。

摘要:

医学视频诊断涉及从整个检查过程中的动态组织反应推断临床决策。现有方法依赖于端到端学习范式,该范式i)关注外观而非病理,ii)缺乏临床先验知识,iii)仅基于观察进行推理而无反事实比较。本文引入MedVCR,一个模仿临床诊断思维的反事实推理框架。MedVCR包含三个组件:一个反事实生成器,通过扩散方式合成指定病理状态下的组织演变;一个反事实表示学习模块,通过临床规则(即时间一致性、病理可分离性和反事实对齐)编码诊断知识;以及一个双重诊断预测策略,将视频级评估与帧级反事实分析相结合。MedVCR在完全监督(如阴道镜检查)和弱监督(如结肠镜检查)视频诊断设置下进行评估,与领先基线相比取得了2.6%-10.2%的性能提升。全面的消融研究进一步验证了每个组件的有效性。代码将发布。

英文摘要:

Medical video diagnosis involves inferring clinical decisions from dynamic tissue responses throughout examination processes. Existing methods rely on an end-to-end learning paradigm that i) focuses on appearance rather than pathology, ii) lacks clinical priors, and iii) reasons solely from observations without counterfactual comparison. This work introduces MedVCR, a counterfactual reasoning framework that mimics clinical diagnostic thinking. MedVCR comprises three components: a Counterfactual Generator that synthesizes tissue evolution under specified pathological states via a diffusion-based manner; a Counterfactual Representation Learning module that encodes diagnostic knowledge through clinical rules (i.e., temporal consistency, pathological separability, and counterfactual alignment); and a Dual Diagnostic Prediction strategy that integrates video-level assessment with frame-level counterfactual analysis. MedVCR is evaluated under both fully supervised (e.g., colposcopy) and weakly supervised (e.g., colonoscopy) video diagnosis settings, yielding 2.6%-10.2% performance gains compared with leading baselines. Comprehensive ablation studies further validate the effectiveness of each component. The code will be released.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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