High Resolution Structural Free-Breathing Cardiac MRI using K-T SLR

Yue Hu¹, Sajan Goud Lingala², Mathews Jacob²

We consider the problem of free-breathing high-resolution structural cardiac MRI. To overcome the limitations with conventional navigator pulses, we propose to reformulate the structural problem as a dynamic one by recovering a 2D+time dataset from under-sampled k-t data. We use our recently proposed k-t SLR scheme to estimate the principal temporal bases of the data, which enables data sharing between heartbeats and facilitate high-resolution dynamic dataset recovery. The structural image at any respiratory phase can be obtained from the recovered dynamic data. Experiments on free-breathing cardiac MRI data showed the feasibility of the proposed scheme in obtaining high fidelity reconstructions.