Accelerating MR Imaging via Deep Chambolle-Pock Network
Haifeng Wang, Jing Cheng, Sen Jia, Zhilang Qiu, Caiyun Shi, Lixian Zou, Shi Su, Yuchou Chang, Yanjie Zhu, Leslie Ying, and Dong Liang
2019
阅读时间:2020.01.25
泛读。这篇文章研究的是MRI重建。作者的思路是 unroll network,展开的算法是 Chambolle-Pock 算法(primal-dual first-order algorithm)。关于参数化部分,作者只给出了结果,没有给出分析和说明。
设目标函数为:
其中,$F$ 表示 data fidelity,$G$ 表示 regularized term.
Chambolle-Pock algorithm 的迭代形式为:
作者把 proximal 算子参数化为卷积网络:
其中
@inproceedings{wang2019accelerating,
title={Accelerating MR imaging via deep Chambolle-Pock network},
author={Wang, Haifeng and Cheng, Jing and Jia, Sen and Qiu, Zhilang and Shi, Caiyun and Zou, Lixian and Su, Shi and Chang, Yuchou and Zhu, Yanjie and Ying, Leslie and others},
booktitle={2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)},
pages={6818--6821},
year={2019},
organization={IEEE}
}