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Abstract #0555

Sliding Interleaved Cylinder (SLINCY) Imaging with Dynamic Center Frequency Adjustment

Kie Tae Kwon1, Adam B. Kerr1, Bob S. Hu2, 3, Dwight G. Nishimura1

1Electrical Engineering, Stanford University, Stanford, CA, United States; 2Palo Alto Medical Foundation, Palo Alto, CA, United States; 3HeartVista Inc., Los Altos, CA, United States

A sliding interleaved cylinder (SLINCY) acquisition uses a 3D concentric cylinders trajectory to reduce venetian blind artifacts. Previously, we employed the SLINCY acquisition for a non-contrast-enhanced magnetization-prepared 3D SSFP sequence to improve artery-vein contrast in the lower extremities. One challenge for this approach is to cover a large FOV without SSFP banding artifacts to yield a uniform arterial signal. In this work, we exploited the thin-slab-scan nature of SLINCY to dynamically adjust the center frequencies of slabs for banding artifact reduction using a separately acquired 2D field map. In vivo studies on healthy volunteers demonstrated the feasibility of this approach.