Gated Compensation of Motion-Induced Phase Error in 3D for Multi-shot Diffusion Acquisitions
Eric Aboussouan 1 , Rafael O'Halloran 1 , Murat Aksoy 1 , Daniel kopeinigg 1 , and Roland Bammer 1
Radiology, Stanford University, Stanford,
CA, United States
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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