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
Biomedical Engineering, Case Western Reserve
University, Cleveland, OH, United States,
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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