FeaInfNet: Diagnosis in Medical Image with Feature-Driven Inference and Visual Explanations

• URL: http://arxiv.org/abs/2312.01871v1
• Date: Mon, 4 Dec 2023 13:09:00 GMT
• Title: FeaInfNet: Diagnosis in Medical Image with Feature-Driven Inference and Visual Explanations
• Authors: Yitao Peng, Lianghua He, Die Hu, Yihang Liu, Longzhen Yang, Shaohua Shang
• Abstract summary: Interpretable deep learning models have received widespread attention in the field of image recognition. Many interpretability models that have been proposed still have problems of insufficient accuracy and interpretability in medical image disease diagnosis. We propose feature-driven inference network (FeaInfNet) to solve these problems.
• Score: 4.022446255159328
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Interpretable deep learning models have received widespread attention in the field of image recognition. Due to the unique multi-instance learning of medical images and the difficulty in identifying decision-making regions, many interpretability models that have been proposed still have problems of insufficient accuracy and interpretability in medical image disease diagnosis. To solve these problems, we propose feature-driven inference network (FeaInfNet). Our first key innovation involves proposing a feature-based network reasoning structure, which is applied to FeaInfNet. The network of this structure compares the similarity of each sub-region image patch with the disease templates and normal templates that may appear in the region, and finally combines the comparison of each sub-region to make the final diagnosis. It simulates the diagnosis process of doctors to make the model interpretable in the reasoning process, while avoiding the misleading caused by the participation of normal areas in reasoning. Secondly, we propose local feature masks (LFM) to extract feature vectors in order to provide global information for these vectors, thus enhancing the expressive ability of the FeaInfNet. Finally, we propose adaptive dynamic masks (Adaptive-DM) to interpret feature vectors and prototypes into human-understandable image patches to provide accurate visual interpretation. We conducted qualitative and quantitative experiments on multiple publicly available medical datasets, including RSNA, iChallenge-PM, Covid-19, ChinaCXRSet, and MontgomerySet. The results of our experiments validate that our method achieves state-of-the-art performance in terms of classification accuracy and interpretability compared to baseline methods in medical image diagnosis. Additional ablation studies verify the effectiveness of each of our proposed components.

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