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Abstract #4356

3D Golden Angle Through-Time Radial GRAPPA with Self-Navigation for High Resolution 3D Abdominal Imaging

Wei-Ching Lo 1 , Jesse I. Hamilton 1 , Kestutis J. Barkauskas 1 , Katherine L. Wright 1 , Yong Chen 2 , Mark A. Griswold 1,2 , Nicole Seiberlich 1 , and Vikas Gulani 1,2

1 Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States, 2 Radiology, University Hospitals Case Medical Center\Case Western Reserve University, Cleveland, OH, United States

3D abdominal MR imaging at high spatial resolution requires long breathholds to avoid motion artifacts. This study presents the combination of a 3D golden angle radial trajectory and non-Cartesian parallel imaging for high-resolution abdominal imaging. This trajectory provides a self-navigation signal to detect the inevitable transition from breathhold to free-breathing, and the golden angle radial trajectory yields nearly uniform angular undersampling regardless of breathhold duration. This method can automatically and retrospectively provide clinically useful images even in the presence of motion while preserving high resolution for 3D abdominal imaging.

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