Fuse4Seg: Image-Level Fusion Based Multi-Modality Medical Image Segmentation

• URL: http://arxiv.org/abs/2409.10328v2
• Date: Tue, 17 Sep 2024 02:35:24 GMT
• Title: Fuse4Seg: Image-Level Fusion Based Multi-Modality Medical Image Segmentation
• Authors: Yuchen Guo, Weifeng Su,
• Abstract summary: We argue the current feature-level fusion strategy is prone to semantic inconsistencies and misalignments. We introduce a novel image-level fusion based multi-modality medical image segmentation method, Fuse4Seg. The resultant fused image is a coherent representation that accurately amalgamates information from all modalities.
• Score: 13.497613339200184
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Although multi-modality medical image segmentation holds significant potential for enhancing the diagnosis and understanding of complex diseases by integrating diverse imaging modalities, existing methods predominantly rely on feature-level fusion strategies. We argue the current feature-level fusion strategy is prone to semantic inconsistencies and misalignments across various imaging modalities because it merges features at intermediate layers in a neural network without evaluative control. To mitigate this, we introduce a novel image-level fusion based multi-modality medical image segmentation method, Fuse4Seg, which is a bi-level learning framework designed to model the intertwined dependencies between medical image segmentation and medical image fusion. The image-level fusion process is seamlessly employed to guide and enhance the segmentation results through a layered optimization approach. Besides, the knowledge gained from the segmentation module can effectively enhance the fusion module. This ensures that the resultant fused image is a coherent representation that accurately amalgamates information from all modalities. Moreover, we construct a BraTS-Fuse benchmark based on BraTS dataset, which includes 2040 paired original images, multi-modal fusion images, and ground truth. This benchmark not only serves image-level medical segmentation but is also the largest dataset for medical image fusion to date. Extensive experiments on several public datasets and our benchmark demonstrate the superiority of our approach over prior state-of-the-art (SOTA) methodologies.

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