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Abstract #1841

Rapid and continuous respiratory motion-resolved abdominal MRI using 3D golden-angle spiral projection acquisition

Mootaz Eldib1, Li Feng2, Daniel K Sodickson2, Zahi A Fayad1, and Hadrien A Dyvorne1

1Translational and Molecular Imaging Institute, Icahn school of Medicine at Mount Sinai, New York, NY, United States, 2Center for Advanced Imaging Innovation and Research (CAI2R), Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, NY, United States

We propose a novel acquisition technique for motion-resolved abdominal imaging. Using a golden angle spiral projection trajectory, we were able to acquire reliable physiologic tracking data while acquiring 3D isotropic resolution images of the entire upper abdomen, resulting in an efficient self-gated sequence. We show that respiratory motion can be fully characterized in vivo in a minute-long 1.8 mm isotropic acquisition, which is suitable for applications such as PET/MR motion correction.

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