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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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