SliceMamba for Medical Image Segmentation

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Abstract
Despite the progress made in Mamba-based medical image segmentation models, current methods utilizing unidirectional or multi-directional feature scanning mechanisms fail to well model dependencies between neighboring positions in the image, hindering the effective modeling of local features. However, local features are crucial for medical image segmentation as they provide vital information about lesions and tissue structures. To address this limitation, we propose a simple yet effective method named SliceMamba, a locally sensitive pure Mamba medical image segmentation model. The proposed SliceMamba includes an efffcient Bidirectional Slice Scan module (BSS), which performs bidirectional feature segmentation while employing varied scanning mechanisms for distinct features. This ensures that spatially adjacent features maintain proximity in the scanning sequence, thereby enhancing segmentation performance. Extensive experiments on skin lesion and polyp segmentation datasets validate the effectiveness of our method.

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