论文标题
自我监督的深度展开的重建,使用正规化来降解
Self-supervised Deep Unrolled Reconstruction Using Regularization by Denoising
论文作者
论文摘要
深度学习方法已成功用于各种计算机视觉任务。受到成功的启发,在磁共振成像(MRI)重建中探索了深度学习。特别是,整合深度学习和基于模型的优化方法已显示出很大的优势。但是,对于高重建质量,通常需要大量标记的培训数据,这对于某些MRI应用来说是具有挑战性的。在本文中,我们提出了一种新颖的重建方法,名为DURED-NET,该方法可以通过组合一个自我监督的DeNoising网络和插件方法来为MR图像重建提供可解释的自我监督学习。我们旨在通过添加明确的先验利用成像物理学来提高MR重建中Noise2noise的重建性能。具体而言,使用denoising(红色)正规化实现了MRI重建网络的杠杆作用。实验结果表明,提出的方法需要减少训练数据量,以实现使用Noise2noise方法的MR重建最新重建方法之间的高重建质量。
Deep learning methods have been successfully used in various computer vision tasks. Inspired by that success, deep learning has been explored in magnetic resonance imaging (MRI) reconstruction. In particular, integrating deep learning and model-based optimization methods has shown considerable advantages. However, a large amount of labeled training data is typically needed for high reconstruction quality, which is challenging for some MRI applications. In this paper, we propose a novel reconstruction method, named DURED-Net, that enables interpretable self-supervised learning for MR image reconstruction by combining a self-supervised denoising network and a plug-and-play method. We aim to boost the reconstruction performance of Noise2Noise in MR reconstruction by adding an explicit prior that utilizes imaging physics. Specifically, the leverage of a denoising network for MRI reconstruction is achieved using Regularization by Denoising (RED). Experiment results demonstrate that the proposed method requires a reduced amount of training data to achieve high reconstruction quality among the state-of-art of MR reconstruction utilizing the Noise2Noise method.