Toward Unpaired Multi-modal Medical Image Segmentation via Learning Structured Semantic Consistency

• URL: http://arxiv.org/abs/2206.10571v3
• Date: Sun, 30 Apr 2023 07:18:44 GMT
• Title: Toward Unpaired Multi-modal Medical Image Segmentation via Learning Structured Semantic Consistency
• Authors: Jie Yang, Ye Zhu, Chaoqun Wang, Zhen Li, Ruimao Zhang
• Abstract summary: This paper presents a novel scheme to learn the mutual benefits of different modalities to achieve better segmentation results for unpaired medical images. We leverage a carefully designed External Attention Module (EAM) to align semantic class representations and their correlations of different modalities. We have demonstrated the effectiveness of the proposed method on two medical image segmentation scenarios.
• Score: 24.78258331561847
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Integrating multi-modal data to promote medical image analysis has recently gained great attention. This paper presents a novel scheme to learn the mutual benefits of different modalities to achieve better segmentation results for unpaired multi-modal medical images. Our approach tackles two critical issues of this task from a practical perspective: (1) how to effectively learn the semantic consistencies of various modalities (e.g., CT and MRI), and (2) how to leverage the above consistencies to regularize the network learning while preserving its simplicity. To address (1), we leverage a carefully designed External Attention Module (EAM) to align semantic class representations and their correlations of different modalities. To solve (2), the proposed EAM is designed as an external plug-and-play one, which can be discarded once the model is optimized. We have demonstrated the effectiveness of the proposed method on two medical image segmentation scenarios: (1) cardiac structure segmentation, and (2) abdominal multi-organ segmentation. Extensive results show that the proposed method outperforms its counterparts by a wide margin.

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