arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.14472cs.CVcs.LGeess.IVstat.ML
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基于图神经网络和分层细化的颅内动脉自动标记

Automated Intracranial Artery Labeling using a Graph Neural Network and Hierarchical Refinement

University of Washington(华盛顿大学)

Li Chen, Thomas Hatsukami, Jenq-Neng Hwang, Chun Yuan

摘要:

自动标注颅内动脉(ICA)的解剖名称有利于特征提取和颅内血管结构的详细分析。由于自然和病理原因,ICA存在显著变化,这使得自动标记具有挑战性。然而,用于评价解剖标记的现有公共数据集有限。我们构建了一个全面的数据集与729磁共振血管造影扫描,并提出了一个图神经网络(GNN)的方法来标记动脉分类类型的节点和边缘的属性关系图。此外,一个分层细化框架的发展,以进一步改善GNN的输出,以纳入结构和相关知识的ICA。我们的方法实现了97.5%的节点标记的准确性,63.8%的扫描正确标记的所有环威利斯节点,在测试集的105扫描与健康和患病的受试者。这是对现有技术方法的显著改进。自动动脉标记有望最大限度地减少人工描述复杂ICA网络的工作量,并为识别血管疾病的几何风险因素提供有价值的信息。我们的代码和数据集可以在https://github.com/clatfd/GNN-ARTLABEL上找到。

英文摘要:

Automatically labeling intracranial arteries (ICA) with their anatomical names is beneficial for feature extraction and detailed analysis of intracranial vascular structures. There are significant variations in the ICA due to natural and pathological causes, making it challenging for automated labeling. However, the existing public dataset for evaluation of anatomical labeling is limited. We construct a comprehensive dataset with 729 Magnetic Resonance Angiography scans and propose a Graph Neural Network (GNN) method to label arteries by classifying types of nodes and edges in an attributed relational graph. In addition, a hierarchical refinement framework is developed for further improving the GNN outputs to incorporate structural and relational knowledge about the ICA. Our method achieved a node labeling accuracy of 97.5%, and 63.8% of scans were correctly labeled for all Circle of Willis nodes, on a testing set of 105 scans with both healthy and diseased subjects. This is a significant improvement over available state-of-the-art methods. Automatic artery labeling is promising to minimize manual effort in characterizing the complicated ICA networks and provides valuable information for the identification of geometric risk factors of vascular disease. Our code and dataset are available at https://github.com/clatfd/GNN-ARTLABEL.

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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