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Abstract #3774

Group-Encoded Ungated Inversion Nulling for Non-Contrast Enhancement in the Steady State (GUINNESS): A Balanced SSFP-Dixon Technique for Breath-Held Non-Contrast MRA

Manojkumar Saranathan1, Ersin Bayram2, James F. Glockner3

1Applied Science Lab, GE Healthcare, Rochester, MN, United States; 2GE Healthcare, Waukesha, WI, United States; 3Radiology, Mayo Clinic, Rochester, MN, United States

While contrast-enhanced MR Angiography (CEMRA) is widely used for evaluation of vascular pathology, recent nephrogenic systemic fibrosis (NSF) concerns following administration of Gadolinium based contrast agents have spurred interest in non-contrast MRA methods. Balanced steady state free precession (b-SSFP) imaging has shown great promise due to its high SNR and short scan times. We propose a balanced SSFP-Dixon technique with a novel group-encoded k-space segmentation scheme for breath-held non-contrast MRA.