Customized Segment Anything Model for Medical Image Segmentation

• URL: http://arxiv.org/abs/2304.13785v2
• Date: Tue, 17 Oct 2023 12:24:24 GMT
• Title: Customized Segment Anything Model for Medical Image Segmentation
• Authors: Kaidong Zhang and Dong Liu
• Abstract summary: We build upon the large-scale image segmentation model, Segment Anything Model (SAM), to explore the new research paradigm of customizing large-scale models for medical image segmentation. SAMed applies the low-rank-based (LoRA) finetuning strategy to the SAM image encoder and finetunes it together with the prompt encoder and the mask decoder on labeled medical image segmentation datasets. Our trained SAMed model achieves semantic segmentation on medical images, which is on par with the state-of-the-art methods.
• Score: 10.933449793055313
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We propose SAMed, a general solution for medical image segmentation. Different from the previous methods, SAMed is built upon the large-scale image segmentation model, Segment Anything Model (SAM), to explore the new research paradigm of customizing large-scale models for medical image segmentation. SAMed applies the low-rank-based (LoRA) finetuning strategy to the SAM image encoder and finetunes it together with the prompt encoder and the mask decoder on labeled medical image segmentation datasets. We also observe the warmup finetuning strategy and the AdamW optimizer lead SAMed to successful convergence and lower loss. Different from SAM, SAMed could perform semantic segmentation on medical images. Our trained SAMed model achieves 81.88 DSC and 20.64 HD on the Synapse multi-organ segmentation dataset, which is on par with the state-of-the-art methods. We conduct extensive experiments to validate the effectiveness of our design. Since SAMed only updates a small fraction of the SAM parameters, its deployment cost and storage cost are quite marginal in practical usage. The code of SAMed is available at https://github.com/hitachinsk/SAMed.

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