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arXiv 2409.04596eess.IVcs.CV
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NeCA:基于神经隐式表示从两个二维投影重建三维冠状动脉树

NeCA: 3D Coronary Artery Tree Reconstruction from Two 2D Projections via Neural Implicit Representation

University of Oxford(牛津大学);Institute of Biomedical Engineering(生物医学工程研究所);Division of Cardiovascular Medicine(心血管医学科)

Yiying Wang, Abhirup Banerjee, Vicente Grau

AI总结:

本文提出自监督深度学习方法NeCA,利用神经隐式表示和可微锥束投影,仅从两个二维冠状动脉造影投影重建三维冠状动脉树,无需三维标签或大型数据集,在拓扑和分支连通性上优于监督模型。

摘要:

心血管疾病(CVDs)是全球最常见的健康威胁。二维X射线侵入性冠状动脉造影(ICA)仍然是心血管疾病评估期间实时心脏介入治疗中应用最广泛的影像学方式。然而,心脏病专家往往难以基于二维平面解读冠状动脉血管的三维几何结构。此外,由于辐射限制,通常仅获取两个血管造影投影,这提供了有限的血管几何信息,因此需要仅基于两个ICA投影进行三维冠状动脉树重建。在本文中,我们提出了一种名为NeCA的自监督深度学习方法,该方法基于神经隐式表示,使用多分辨率哈希编码器和可微锥束前向投影层,以实现从两个二维投影进行三维冠状动脉树重建。我们使用六种不同的指标,在从右冠状动脉和左前降支的冠状动脉计算机断层扫描血管造影生成的数据集上验证了我们的方法。评估结果表明,我们的NeCA方法无需三维真实标签进行监督或大型数据集进行训练,在血管拓扑和分支连通性保持方面均取得了有前景的性能,优于监督式深度学习模型。

英文摘要:

Cardiovascular diseases (CVDs) are the most common health threats worldwide. 2D X-ray invasive coronary angiography (ICA) remains the most widely adopted imaging modality for CVD assessment during real-time cardiac interventions. However, it is often difficult for cardiologists to interpret the 3D geometry of coronary vessels based on 2D planes. Moreover, due to the radiation limit, often only two angiographic projections are acquired, providing limited information of the vessel geometry and necessitating 3D coronary tree reconstruction based only on two ICA projections. In this paper, we propose a self-supervised deep learning method called NeCA, which is based on neural implicit representation using the multiresolution hash encoder and differentiable cone-beam forward projector layer, in order to achieve 3D coronary artery tree reconstruction from two 2D projections. We validate our method using six different metrics on a dataset generated from coronary computed tomography angiography of right coronary artery and left anterior descending artery. The evaluation results demonstrate that our NeCA method, without requiring 3D ground truth for supervision or large datasets for training, achieves promising performance in both vessel topology and branch-connectivity preservation compared to the supervised deep learning model.

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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