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Abstract #3928

Rapid Real-Time Cardiac MRI Exploiting Synchronized Cardio-Respiratory Sparsity

Li Feng 1 , Leon Axel 1 , Jian Xu 2 , Daniel K Sodickson 1 , and Ricardo Otazo 1

1 Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University, School of Medicine, New York, New York, United States, 2 Siemens Medical Solutions, New York, New York, United States

A novel approach for cardiac MRI reconstruction is proposed, which can overcome some limitations in conventional technique and provide new kinds of functional information. Specifically, we acquire cardiac data continuously using golden-angle radial trajectories and detect both cardiac and respiratory signals from the data itself. The data can be retrospectively sorted during the image reconstruction into an expanded set of images, spanning different phases of both cardiac and respiratory cycles. The increased dimensionality enables high quality free breathing imaging using compressed sensing and allows investigation of the interactions between cardiac and respiratory cycles in their effects on cardiac function.

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