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Abstract #4105

Prospectively Respiratory-Cardiac Double-Triggered Three-Dimensional T2-Weighted Abdominal MRI

Yuji Iwadate1, Atsushi Nozaki1, Yoshinobu Nunokawa2, Shigeo Okuda3, Mitsuharu Miyoshi1, Masahiro Jinzaki3, and Hiroyuki Kabasawa1

1Global MR Applications and Workflow, GE Healthcare Japan, Hino, Japan, 2Office of Radiation Technology, Keio University Hospital, Tokyo, Japan, 3Department of Radiology, Keio University School of Medicine, Tokyo, Japan

We developed a prospective respiratory-cardiac double-triggering technique with navigator echo and incorporated it into 3D T2-weighted variable refocusing flip-angle fast spin echo (Cube) for abdominal MRI. The respiratory and cardiac navigator signals synchronized well with the signals from the external devices, and resultant double-triggered Cube images had higher sharpness scores of the left liver lobe than the respiratory-triggered Cube images. The double-triggering technique is feasible and can be applied to other applications where both respiratory and cardiac motions are problematic.

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