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Abstract #4746

Evaluation of Fat-Only Self Gated Signal for Respiratory Motion Detection and Compensation in the Liver

Thomas Martin1, Tess Armstrong1, Alibek Danyalov1, Eunice Lee1, Ely Felker1, James Sayre1, Steven Raman1, Holden Wu1, and Kyunghyun Sung1

1Radiological Sciences, University of California Los Angeles, Los Angeles, CA, United States

A dual-echo 3D golden angle radial gradient echo sequence can be used for generating a fat-only self-gated signal for respiratory motion detection. We have demonstrated that respiratory motion extraction and compensation in the liver can be achieved using fat-only self-navigated signal with minimal error in the fat-water separation (< 15%). Using this technique has implications of a more robust motion correction for liver DCE-MRI due to its inherent separation between respiratory motion signal and contrast uptake.

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