3D radial, such as ultra-short TE (UTE) MRI, is insensitive to motion-related ghosting artifact, mainly because of heavy over-sampling at the k-space origin. However, using the smooth view ordering, of which direction of the readout gradient smoothly changes, any small portion of FID data with motion-corruption tends to be clustered, while directions of random view ordering are spread out over the entire 3D surface. In this work, we will compare the artifact induced by both motion and missing lines in 3D UTE MRI for smooth and random view orderings.
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