arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.03857eess.IVcs.CV
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脑积水患者的鲁棒脑磁共振图像分割:硬注意和软注意

Robust Brain Magnetic Resonance Image Segmentation for Hydrocephalus Patients: Hard and Soft Attention

Shanghai Jiao Tong University(上海交通大学)

Xuhua Ren, Jiayu Huo, Kai Xuan, Dongming Wei, Lichi Zhang, Qian Wang

摘要:

脑积水患者的脑磁共振(MR)分割被认为是一项具有挑战性的工作。对不同个体大脑解剖结构的差异进行编码并不容易。任务变得更加困难,特别是当考虑来自脑积水患者的图像数据时,其通常具有大的变形并且与正常受试者显著不同。在这里,我们提出了一种新的策略,硬和软注意力模块来解决脑积水MR图像的分割问题。本文的主要贡献有三个方面:1)硬注意模块采用基于多图谱的方法和VoxelMorph工具生成粗分割图,指导后续的分割过程,提高了分割的鲁棒性; 2)软注意模块引入位置注意,捕捉精确的上下文信息,进一步提高了分割的准确性; 3)通过对脑积水患者的MRI图像进行分割,对脑积水患者的MRI图像进行定量分析,得到了脑积水患者的MRI图像,并对脑积水患者的MRI图像进行了定量分析。所提出的方法实现了更高的鲁棒性和准确性分割所有17个意识相关的ROI与高变化的不同主题。据我们所知,这是第一个采用深度学习来解决脑积水患者大脑分割问题的工作。

英文摘要:

Brain magnetic resonance (MR) segmentation for hydrocephalus patients is considered as a challenging work. Encoding the variation of the brain anatomical structures from different individuals cannot be easily achieved. The task becomes even more difficult especially when the image data from hydrocephalus patients are considered, which often have large deformations and differ significantly from the normal subjects. Here, we propose a novel strategy with hard and soft attention modules to solve the segmentation problems for hydrocephalus MR images. Our main contributions are three-fold: 1) the hard-attention module generates coarse segmentation map using multi-atlas-based method and the VoxelMorph tool, which guides subsequent segmentation process and improves its robustness; 2) the soft-attention module incorporates position attention to capture precise context information, which further improves the segmentation accuracy; 3) we validate our method by segmenting insula, thalamus and many other regions-of-interests (ROIs) that are critical to quantify brain MR images of hydrocephalus patients in real clinical scenario. The proposed method achieves much improved robustness and accuracy when segmenting all 17 consciousness-related ROIs with high variations for different subjects. To the best of our knowledge, this is the first work to employ deep learning for solving the brain segmentation problems of hydrocephalus patients.

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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