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
Global MR Applications and Workflow, GE
Healthcare Japan, Hino, Tokyo, Japan,
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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