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Abstract #3643

Water-Fat Separation with a Dual-Echo Two-Point Dixon Technique for Pencil Beam Navigator Echo

Yuji Iwadate 1 , Kunihiro Miyoshi 2 , Masanori Ozaki 2 , and Hiroyuki Kabasawa 1

1 Global MR Applications and Workflow, GE Healthcare Japan, Hino, Tokyo, Japan, 2 MR Engineering, GE Healthcare Japan, Tokyo, Japan

Pencil beam navigator echo is sensitive to off-resonance, and undesired excitation of subcutaneous fat is caused at 3T. We modified a previously reported 2-point Dixon reconstruction for pencil beam navigator with dual-echo acquisition. Volunteer scans were performed on a 3 T imaging system with the proposed method, and dark bands was reduced in the navigator signal, which resulted in accurate motion detection.

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