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arXiv 2408.09736eess.IVcs.CV
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基于粗细视图注意力对齐的GAN用于从双平面X射线重建CT

Coarse-Fine View Attention Alignment-Based GAN for CT Reconstruction from Biplanar X-Rays

Beijing United Imaging Research Institute of Intelligent Imaging(北京联影智能影像研究院);United Imaging Intelligence Beijing(联影智能(北京));Peking University Third Hospital(北京大学第三医院);Beijing University of Posts and Telecommunications(北京邮电大学)

Zhi Qiao, Hanqiang Ouyang, Dongheng Chu, Huishu Yuan, Xiantong Zhen, Pei Dong, Zhen Qian

AI总结:

针对CT成像不可用的场景,提出一种带注意力的粗细跨视图融合GAN,通过双平面X射线重建3D CT,性能优于现有最优方法。

摘要:

在手术规划和术中成像场景中,当无法进行或不适合进行CT成像时,利用X射线图像进行CT重建有望成为一种重要的替代方案。本文旨在利用双平面X射线重建3D CT图像,因为双平面X射线比单视图X射线携带更丰富的信息,且更常被外科医生使用。与以往研究在融合跨视图数据时对两个X射线视图不加区分的处理方式不同,我们提出了一种新颖的带注意力机制的从粗到细跨视图融合方法,用于融合从正交双平面视图中提取的特征。该方法由视图注意力对齐子模块和精细蒸馏子模块组成,二者协同工作,以突出每个视图的独特或互补信息。实验表明,我们提出的方法优于SOTA(当前最优)方法。

英文摘要:

For surgical planning and intra-operation imaging, CT reconstruction using X-ray images can potentially be an important alternative when CT imaging is not available or not feasible. In this paper, we aim to use biplanar X-rays to reconstruct a 3D CT image, because biplanar X-rays convey richer information than single-view X-rays and are more commonly used by surgeons. Different from previous studies in which the two X-ray views were treated indifferently when fusing the cross-view data, we propose a novel attention-informed coarse-to-fine cross-view fusion method to combine the features extracted from the orthogonal biplanar views. This method consists of a view attention alignment sub-module and a fine-distillation sub-module that are designed to work together to highlight the unique or complementary information from each of the views. Experiments have demonstrated the superiority of our proposed method over the SOTA methods.

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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