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Abstract #1519

Respiratory-Resolved Fat-Suppressed Cardiac Cine MRI

R Reeve Ingle 1 , Michael V McConnell 1,2 , Juan M Santos 3 , William R Overall 3 , Bob S Hu 1,4 , and Dwight G Nishimura 1

1 Electrical Engineering, Stanford University, Stanford, California, United States, 2 Cardiovascular Medicine, Stanford University, Stanford, California, United States, 3 HeartVista, Inc., Menlo Park, California, United States, 4 Palo Alto Medical Foundation, Palo Alto, California, United States

A free-breathing, fat-suppressed cardiac cine pulse sequence is proposed, allowing multiple respiratory and cardiac phases to be simultaneously resolved. Fat suppression is achieved using an alternating repetition time balanced steady-state free precession sequence. By redesigning the slice-select rephasing gradients, a 1D navigator readout is acquired during the unused short TR interval and used to track respiratory motion. This technique allows data from a single free-breathing scan can to be displayed in a standard cardiac-cine format for a fixed respiratory phase, or in a respiratory-cine format for a fixed cardiac phase.

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