Model-based free-breathing cardiac MRI reconstruction using deep learned \& STORM priors: MoDL-STORM

Abstract: We introduce a model-based reconstruction framework with deep learned (DL) and smoothness regularization on manifolds (STORM) priors to recover free breathing and ungated (FBU) cardiac MRI from highly undersampled measurements. The DL priors enable us to exploit the local correlations, while the STORM prior enables us to make use of the extensive non-local similarities that are subject dependent. We introduce a novel model-based formulation that allows the seamless integration of deep learning methods with available prior information, which current deep learning algorithms are not capable of. The experimental results demonstrate the preliminary potential of this work in accelerating FBU cardiac MRI. Index Terms-- Free breathing cardiac MRI, model-based, inverse problems, deep CNNs 1. INTRODUCTION The acquisition of cardiac MRI data is often challenging due to the slow nature of MR acquisition.