Abstract #2415
Fast G-factor Estimation in Multi-band Acquisition Based on Sum of Inverse Distance Model
Mengye Lyu 1,2 , Victor B. Xie 1,2 , Patrick P. Gao 1,2 , Yilong Liu 1,2 , and Ed X. Wu 1,2
1
Laboratory of Biomedical Imaging and Signal
Processing, The University of Hong Kong, Hong Kong, Hong
Kong, China,
2
Department
of Electrical and Electronic Engineering, The University
of Hong Kong, Hong Kong, Hong Kong, China
Inter-slice shift is one of the most important factors
for reducing g-factor in multi-band (MB) simultaneous
multi-slice acquisition. Previous study1 has shown that
the optimal distance of slice shift can deviate away
from intuitive choices such as FOV/Nslice However,
optimizing shift pattern is time-consuming because
iterative algorithms have to be used. In this study, we
propose a fast g-factor estimation model that can
approximately estimate g-factor versus slice shift
distance with closed form formula, with input of slice
number and one parameter quantifying the coil
sensitivity in slice direction.
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