论文|Wenjun Xia, Zexin Lu, Yongqiang Huang, Yan Liu, Hu Chen, Jiliu Zhou, and Yi Zhang*：CT Reconstruction with PDF: Parameter-Dependent Framework for Data from Multiple Geometries and Dose Levels.

本文（CT Reconstruction with PDF: Parameter-dependent framework for data from multiple geometries and dose levels）原载IEEE Transactions on Medical Imaging，由四川大学计算机学院张意教授等科研人员创作，系四川大学“智慧法治”超前部署学科系列学术成果。后续会持续分享四川大学“智慧法治”超前部署学科系列学术成果，欢迎大家阅读。

Abstract:The current mainstream computed tomography (CT) reconstruction methods based on deep learning usually need to fix the scanning geometry and dose level, which significantly aggravates the training costs and requires more training data for real clinical applications. In this paper, we propose a parameter-dependent framework (PDF) that trains a reconstruction network with data originating from multiple alternative geometries and dose levels simultaneously. In the proposed PDF, the geometry and dose level are parameterized and fed into two multilayer perceptrons (MLPs). The outputs of the MLPs are used to modulate the feature maps of the CT reconstruction network, which condition the network outputs on different geometries and dose levels. The experiments show that our proposed method can obtain competitive performance compared to the original network trained with either specific or mixed geometry and dose level, which can efficiently save extra training costs for multiple geometries and dose levels.

 Wenjun Xia, Zexin Lu, Yongqiang Huang, Yan Liu, Hu Chen, Jiliu Zhou, and Yi Zhang*. CT Reconstruction with PDF: Parameter-dependent framework for data from multiple geometries and dose levels. IEEE Transactions on Medical Imaging, DOI: 10.1109/TMI.2021.3085839, online, 2021.（论文下载）