Abstract #2558
The Correction of Motion-Induced Coil Sensitivity Miscalibration in Parallel Imaging with Prospective Motion Correction
Uten Yarach 1 , Daniel Stucht 1 , Frank Godenschweger 1 , and Oliver Speck 1
1
Department of Biomedical Magnetic Resonance,
Otto-von-Guericke University, Magdeburg, Sachsen-Anhalt,
Germany
Unlike the retrospective technique, prospective motion
correction (Mo-Co) can avoid spin history effects as
well as k-space inconsistencies. However, in case of
large motion during multi-coil acquisition, the coil
sensitivities that change relative to the object are one
of the most considerable residual artifact causes in
prospective Mo-Co. In this study, we investigate the
effect of coil sensitivity variations on parallel
prospective Mo-Co data if only initial coil
sensitivities are known. We also show that if a small
number of central k-space can be acquired when motion
occurred, they are sufficient for estimating coil
sensitivities to correct abovementioned artifact.
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