Gated Compensation of Motion-Induced Phase Error in 3D for Multi-shot Diffusion Acquisitions

High-resolution diffusion-weighted imaging is limited to multi-shot acquisitions, which are problematic due to inter-shot phase variations caused by rigid-body (non-repeatable) and pulsatile (repeatable over the cardiac cycle) motion during the diffusion-encoding periods. The purpose of this work is to measure the 3D non-linear component of the phase in a novel pulsatile phantom with repeatable motion and prospectively correct the linear and non-linear components of this spurious phase using a 3D RF pulse.

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