Abstract #4221
Rotation Angle Optimization for a K-space Segmented 4D Radial Stack-of-Stars Acquisition
Keigo Kawaji 1 , Mehmet Akakaya 1 , Sbastien Roujol 1 , Warren J Manning 1,2 , and Reza Nezafat 1
1
Medicine, Beth Israel Deaconess Medical
Center and Harvard Medical School, Boston,
Massachusetts, United States,
2
Radiology,
Beth Israel Deaconess Medical Center and Harvard Medical
School, MA, United States
Golden angle interleaving of radial k-space lines can be
incorporated into 3D coronary MRI, so that a large
acquisition window can be acquired for retrospective
reconstructions of any window subset with minimal
cardiac motion. To enable such reconstructions with
minimal artifacts, uniform distribution of the radial
lines becomes desirable, but this coverage is dependent
on parameters such as the rotation angle and acquisition
window size. We present an approach to determine the
optimal rotation angle so that the radial spokes are
evenly distributed for any subset of the acquisition
window in a 3D radial stack-of-stars coronary MRI
sequence.
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