Abstract #4254
Uniformity and symmetry considerations in sampling designs for 3D radial MRI
Cheng Guan Koay 1
1
Department of Medical Physics, University of
Wisconsin-Madison, Madison, WI, United States
Uniformity in sampling measurements is a well known
guiding principle in acquisition design for 3D radial
MRI. Here, we argue that further improvement in image
quality can be achieved by taking antipodal symmetry (or
Hermitian symmetry) into account in the sampling design
process. Herein, we developed a technique capable of
generating very large, uniformly distributed points on
the unit sphere that are endowed with antipodal
symmetry. We observed a reduction of percent relative
errors with respect to the ground truth, which was
derived from a realistic numerical phantom, of about 10%
as compared to the commonly used scheme.
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