Chu-Yu Lee1, Zhiqiang Li2, Eric
Aboussouan1, Josef P. Debbins, 1,3, James G. Pipe3
1Electrical Engineering, Arizona State
University, Tempe, AZ, United States; 2GE Healthcare, Waukesha,
WI, United States; 3Keller Center for Imaging Innovation, Barrow
Neurological Institute, Phoenix
PROPELLER
[1] is a variant of multi-shot FSE technique, providing a high-resolution DWI
with excellent immunity to off-resonance. Its self-navigated nature around
the center of K-space also allows for motion correction. The odd/even echo
phase inconsistencies in the non-CPMG echo train were addressed using the
split-blade method [2], where the blade width was reduced by a factor of
two, making the motion-related phase more difficult to remove [3]. Thus, this
work applied the whole blade method [3] to create wider blades for
robustly removing the motion-induced phase. The proposed scheme added the
reference blade (only for b=0) to effectively remove the coil phase of
odd/even echoes. This reference blade can also be used for GRAPPA kernel
training for parallel imaging to further widen the blade width and reduce the
scan time.