TranSiam: Fusing Multimodal Visual Features Using Transformer for Medical Image Segmentation

• URL: http://arxiv.org/abs/2204.12185v1
• Date: Tue, 26 Apr 2022 09:39:10 GMT
• Title: TranSiam: Fusing Multimodal Visual Features Using Transformer for Medical Image Segmentation
• Authors: Xuejian Li and Shiqiang Ma and Jijun Tang and Fei Guo
• Abstract summary: We propose a segmentation method suitable for multimodal medical images that can capture global information. TranSiam is a 2D dual path network that extracts features of different modalities. On the BraTS 2019 and BraTS 2020 multimodal datasets, we have a significant improvement in accuracy over other popular methods.
• Score: 4.777011444412729
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Automatic segmentation of medical images based on multi-modality is an important topic for disease diagnosis. Although the convolutional neural network (CNN) has been proven to have excellent performance in image segmentation tasks, it is difficult to obtain global information. The lack of global information will seriously affect the accuracy of the segmentation results of the lesion area. In addition, there are visual representation differences between multimodal data of the same patient. These differences will affect the results of the automatic segmentation methods. To solve these problems, we propose a segmentation method suitable for multimodal medical images that can capture global information, named TranSiam. TranSiam is a 2D dual path network that extracts features of different modalities. In each path, we utilize convolution to extract detailed information in low level stage, and design a ICMT block to extract global information in high level stage. ICMT block embeds convolution in the transformer, which can extract global information while retaining spatial and detailed information. Furthermore, we design a novel fusion mechanism based on cross attention and selfattention, called TMM block, which can effectively fuse features between different modalities. On the BraTS 2019 and BraTS 2020 multimodal datasets, we have a significant improvement in accuracy over other popular methods.

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