LANTERN: Learn analysis transform network for dynamic magnetic resonance imaging

Abstract

<p style='text-indent:20px;'>This paper proposes to learn analysis transform network for dynamic magnetic resonance imaging (LANTERN). Integrating the strength of CS-MRI and deep learning, the proposed framework is highlighted in three components: (ⅰ) The spatial and temporal domains are sparsely constrained by adaptively trained convolutional filters; (ⅱ) We introduce an end-to-end framework to learn the parameters in LANTERN to solve the difficulty of parameter selection in traditional methods; (ⅲ) Compared to existing deep learning reconstruction methods, our experimental results show that our paper has encouraging capability in exploiting the spatial and temporal redundancy of dynamic MR images. We performed quantitative and qualitative analysis of cardiac reconstructions at different acceleration factors (<inline-formula><tex-math id="M1">\begin{document}$ 2 \times $\end{document}</tex-math></inline-formula>-<inline-formula><tex-math id="M2">\begin{document}$ 11 \times $\end{document}</tex-math></inline-formula>) with different undersampling patterns. In comparison with two state-of-the-art methods, experimental results show that our method achieved encouraging performances.</p>