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Abstract #4016

Spherical-surface Poisson disc point selection for radial-trajectory MRI

Ethan M Johnson1, Kim Butts Pauly2, and John M Pauly1

1Electrical Engineering, Stanford University, Stanford, CA, United States, 2Radiology, Stanford University, Stanford, CA, United States

A design consideration for center-out k-space trajectories is the angular distribution of trajectory endpoints (or equivalently, exit angles). Uniformity is desirable, but the regularity of spacing affects aliasing patterns, which can dictate undersampling performance. Here, a method for choosing points on a sphere with Poisson disc spacing is described, and its use in selecting angles for a 3D radial UTE sequence is validated.

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