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arXiv 2403.19444cs.LGcs.CV

利用专家输入实现稳健且可解释的AI辅助肺癌检测

Leveraging Expert Input for Robust and Explainable AI-Assisted Lung Cancer Detection in Chest X-rays

School of Informatics, University of Edinburgh(信息学院,爱丁堡大学);NHS Lothian(洛锡安国家健康服务)

Amy Rafferty, Rishi Ramaesh, Ajitha Rajan

AI总结:

本文研究了基于InceptionV3的肺癌检测模型的可解释性和鲁棒性,提出ClinicXAI方法,通过专家驱动的思路生成临床相关解释,并在对抗攻击下表现出更强的鲁棒性。

摘要:

深度学习模型在推动AI辅助医学诊断方面显示出巨大潜力,特别是在通过胸部X光等医学图像模态检测肺癌方面。然而,这些模型的黑盒性质对可解释性和可信度构成挑战,限制了其在临床中的应用。本研究评估了基于InceptionV3的高性能肺癌检测模型的可解释性和鲁棒性,利用公开的胸部X光和放射学报告数据集。我们评估了多种可解释AI(XAI)技术的临床效用,包括后验和先验方法,并发现现有方法常无法提供临床相关解释,存在不一致性和与放射科专家评估的偏离。为解决这些限制,我们与放射科医生合作定义诊断特定的临床概念,并开发了ClinicXAI,一种专家驱动的方法,利用概念瓶颈方法。ClinicXAI生成具有临床意义的解释,与临床医生的实践需求紧密相关,同时保持高诊断准确性。我们还通过一系列广泛使用的对抗攻击测试ClinicXAI与原始InceptionV3模型的鲁棒性。我们的分析表明,ClinicXAI在对抗扰动下表现出显著更强的鲁棒性。这些发现强调了在医学诊断中将领域专业知识纳入可解释和鲁棒AI系统设计的重要性,为医疗领域更可信和有效的AI解决方案铺平道路。

英文摘要:

Deep learning models show significant potential for advancing AI-assisted medical diagnostics, particularly in detecting lung cancer through medical image modalities such as chest X-rays. However, the black-box nature of these models poses challenges to their interpretability and trustworthiness, limiting their adoption in clinical practice. This study examines both the interpretability and robustness of a high-performing lung cancer detection model based on InceptionV3, utilizing a public dataset of chest X-rays and radiological reports. We evaluate the clinical utility of multiple explainable AI (XAI) techniques, including both post-hoc and ante-hoc approaches, and find that existing methods often fail to provide clinically relevant explanations, displaying inconsistencies and divergence from expert radiologist assessments. To address these limitations, we collaborated with a radiologist to define diagnosis-specific clinical concepts and developed ClinicXAI, an expert-driven approach leveraging the concept bottleneck methodology. ClinicXAI generated clinically meaningful explanations which closely aligned with the practical requirements of clinicians while maintaining high diagnostic accuracy. We also assess the robustness of ClinicXAI in comparison to the original InceptionV3 model by subjecting both to a series of widely utilized adversarial attacks. Our analysis demonstrates that ClinicXAI exhibits significantly greater resilience to adversarial perturbations. These findings underscore the importance of incorporating domain expertise into the design of interpretable and robust AI systems for medical diagnostics, paving the way for more trustworthy and effective AI solutions in healthcare.

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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