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arXiv 2402.05079eess.IVcs.CV

Mamba-UNet:用于医学图像分割的类UNet纯视觉Mamba网络

Mamba-UNet: UNet-Like Pure Visual Mamba for Medical Image Segmentation

University of Oxford(牛津大学);Fudan University(复旦大学);University of Pittsburgh(匹兹堡大学);University of Copenhagen(哥本哈根大学)

Ziyang Wang, Jian-Qing Zheng, Yichi Zhang, Ge Cui, Lei Li

AI总结:

本文提出Mamba-UNet,将U-Net与纯视觉Mamba编码器-解码器结构及跳跃连接结合,用于医学图像分割,并在ACDC和Synapse数据集上验证其优于多种UNet。

摘要:

在医学图像分析的最新进展中,卷积神经网络(CNN)和视觉Transformer(ViT)已树立了重要基准。前者通过其卷积运算擅长捕获局部特征,后者则通过利用自注意力机制实现显著的全局上下文理解。然而,两种架构在高效建模医学图像中的长程依赖方面均表现出局限性,而这对精确分割而言是一个关键方面。受Mamba架构启发——该架构作为一种状态空间模型(SSM),以更高的计算效率处理长序列和全局上下文信息而著称——我们提出Mamba-UNet,这是一种将医学图像分割中的U-Net与Mamba能力协同起来的新颖架构。Mamba-UNet采用纯视觉Mamba(VMamba)的编码器-解码器结构,并注入跳跃连接以在网络的不同尺度上保留空间信息。该设计促进了全面的特征学习过程,捕获医学图像中的复杂细节和更广泛的语义上下文。我们在VMamba块中引入了一种新颖的集成机制,以确保编码器与解码器路径之间的无缝连接和信息流动,从而提升分割性能。我们在公开可用的ACDC MRI心脏分割数据集和Synapse CT腹部分割数据集上进行了实验。结果表明,在相同的超参数设置下,Mamba-UNet在医学图像分割中优于多种类型的UNet。源代码和基线实现均已公开。

英文摘要:

In recent advancements in medical image analysis, Convolutional Neural Networks (CNN) and Vision Transformers (ViT) have set significant benchmarks. While the former excels in capturing local features through its convolution operations, the latter achieves remarkable global context understanding by leveraging self-attention mechanisms. However, both architectures exhibit limitations in efficiently modeling long-range dependencies within medical images, which is a critical aspect for precise segmentation. Inspired by the Mamba architecture, known for its proficiency in handling long sequences and global contextual information with enhanced computational efficiency as a State Space Model (SSM), we propose Mamba-UNet, a novel architecture that synergizes the U-Net in medical image segmentation with Mamba's capability. Mamba-UNet adopts a pure Visual Mamba (VMamba)-based encoder-decoder structure, infused with skip connections to preserve spatial information across different scales of the network. This design facilitates a comprehensive feature learning process, capturing intricate details and broader semantic contexts within medical images. We introduce a novel integration mechanism within the VMamba blocks to ensure seamless connectivity and information flow between the encoder and decoder paths, enhancing the segmentation performance. We conducted experiments on publicly available ACDC MRI Cardiac segmentation dataset, and Synapse CT Abdomen segmentation dataset. The results show that Mamba-UNet outperforms several types of UNet in medical image segmentation under the same hyper-parameter setting. The source code and baseline implementations are available.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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