GAGM: Geometry-aware graph matching framework for weakly supervised gyral hinge correspondence

IF 11.8 1区 医学 Q1 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE
Zhibin He, Wuyang Li, Tianming Liu, Xiang Li, Junwei Han, Tuo Zhang, Yixuan Yuan
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引用次数: 0

Abstract

Achieving precise alignment of inter-subject brain landmarks, such as the gyral hinge (GH), would enhance the correspondence of brain function across subjects, thereby advancing our understanding of brain anatomy-function relationship and brain mechanisms. Recent methods mainly focus on identifying the correspondences of GHs by utilizing point-to-point ground truth. However, labeling point-to-point GH correspondences between subjects for the entire brain is laborious and time-consuming, given the presence of over 400 GHs per brain. To remedy this problem, we propose a Geometry-Aware Graph Matching framework, dubbed GAGM, for weakly supervised gyral hinge correspondence solely based on brain prior information. Specifically, we propose a Shape-Aware Graph Establishment (SAGE) module to ensure a comprehensive representation of geometry features in GH. SAGE constructs a structured graph by incorporating GH coordinates, shapes, and inter-GH relationships to model entire brain GHs and learns the spatial relation between them. Moreover, to reduce the optimization difficulties, Region-Aware Graph Matching (RAGM) module is proposed for multi-scale matching. RAGM leverages prior knowledge of the multi-scale relationship between GHs and brain regions and incorporates inter-scale semantic consistency to ensure both intra-region consistency and inter-region variability of GH features, ultimately achieving accurate GH matching. Extensive experiments on two public datasets, HCP and CHCP, demonstrate the superiority of our method over state-of-the-art methods. Our code: https://github.com/ZhibinHe/GAGM.
弱监督回转铰对应的几何感知图匹配框架
实现脑内标记的精确对齐,如脑回铰(GH),将增强不同受试者脑功能的对应性,从而促进我们对脑解剖-功能关系和脑机制的理解。目前的方法主要集中在利用点对点接地真值来识别GHs的对应关系。然而,考虑到每个大脑中存在超过400个GH,在受试者之间标记整个大脑的点对点GH对应既费力又耗时。为了解决这个问题,我们提出了一个几何感知图匹配框架,称为GAGM,用于仅基于大脑先验信息的弱监督旋转铰链对应。具体来说,我们提出了一个形状感知图建立(SAGE)模块,以确保在GH中几何特征的全面表示。SAGE通过整合GH坐标、形状和GH之间的关系来构建一个结构化图,对整个大脑GH进行建模,并学习它们之间的空间关系。此外,为了降低优化难度,提出了区域感知图匹配(RAGM)模块用于多尺度匹配。RAGM利用GHs与大脑区域之间多尺度关系的先验知识,结合尺度间语义一致性,确保GH特征在区域内的一致性和区域间的可变性,最终实现准确的GH匹配。在HCP和CHCP两个公共数据集上进行的大量实验表明,我们的方法优于最先进的方法。我们的代码:https://github.com/ZhibinHe/GAGM。
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来源期刊
Medical image analysis
Medical image analysis 工程技术-工程:生物医学
CiteScore
22.10
自引率
6.40%
发文量
309
审稿时长
6.6 months
期刊介绍: Medical Image Analysis serves as a platform for sharing new research findings in the realm of medical and biological image analysis, with a focus on applications of computer vision, virtual reality, and robotics to biomedical imaging challenges. The journal prioritizes the publication of high-quality, original papers contributing to the fundamental science of processing, analyzing, and utilizing medical and biological images. It welcomes approaches utilizing biomedical image datasets across all spatial scales, from molecular/cellular imaging to tissue/organ imaging.
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