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Abstract #1804

Respiratory and Cardiac Self-Gated Free-Breathing Cardiac CINE Imaging with Multi-Echo 3D Hybrid Radial Acquisition

Jing Liu1, Pascal Spincemaille1, Thanh D. Nguyen1, Walter F. Block2, Martin R. Prince1, Yi Wang1

1Radiology, Weill Cornell Medical College, New York, NY, USA; 2Biomedical, University of Wisconsin - Madison, Madison, WI, USA

Free breathing 3D cardiac CINE imaging is achieved with simultaneous respiratory and cardiac self-gating. Multi-echo 3D hybrid radial acquisition technique has been applied to cardiac functional measurements and coronary imaging within a single breath-hold, providing high spatial and temporal resolutions. The acquired k-space centers along kz axis can be used for deriving the center of mass along slice encodes. During free breathing, this center of mass changes through time corresponding to both respiratory and cardiac motions, thus the center of mass along slice encodes can be used for simultaneous respiratory and cardiac gating. Results of short-axis, long-axis and four-chamber views demonstrated the proposed respiratory and cardiac self-gated 3D cardiac CINE imaging technique.