Abstract #0244
Simultaneous Multi-Slice Magnetic Resonance Fingerprinting Reconstruction using GROG+slice-GRAPPA (GsG)
Huihui Ye 1,2 , Borjan Gagoski 3 , Berkin Bilgic 1 , Stephen F Cauley 1 , Dan Ma 4 , Yiping Du 2 , Lawrence L Wald 1 , Mark A Griswold 4 , and Kawin Setsompop 1
1
MGH/HST Martinos Center for Biomedical
Imaging, Charlestown, MA, United States,
2
Zhejaing
University, Hangzhou, Zhangjiang, China,
3
Boston
Childrens Hospital, MA, United States,
4
Case
Western Reserve University, Ohio, United States
To separate the signal from simultaneously acquired
slices using simultaneous-multislice magnetic resonance
fingerprinting (SMS-MRF) acquisition, we have proposed
t-blipped SMS-MRF method which uses Gz blips to create
TR dependent phase differences between SMS slices and RF
encoding patterns, which utilizes different flip angle
train for the different SMS slices. In this work, we
propose to complement these SMS signal encoding
techniques with GROG+slice-GRAPPA (GsG) reconstruction,
a novel k-space parallel imaging approach that can
provide good unaliasing performance in the slice
direction for the highly undersampled MRF signal. We
demonstrate the performance of GROG+GRAPPA in
conjunction with t-blipped SMS-MRF at MB=3 with in vivo
experiment.
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