Huihui Ye1,2, Qiqi Tong2, Qing Li2,3, Xiaozhi Cao2, Hongjian He2, Jianhui Zhong2, and Huafeng Liu1
1State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China, 2Center for Brain Imaging Science and Technology, Key Laboratory for Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrumental Science, Zhejiang University, Hangzhou, China, 3MR Collaborations, Siemens Healthcare Ltd., Shanghai, China
1State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, China, 2Center for Brain Imaging Science and Technology, Key Laboratory for Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrumental Science, Zhejiang University, Hangzhou, China, 3MR Collaborations, Siemens Healthcare Ltd., Shanghai, China
A generalized combined
FISP and PSIF MR Fingerprinting sequence is proposed where either FISP block or
PSIF block can be used in each TR. An example sequence pattern shows improved
T2 mapping accuracy and its immunity to slice profile imperfection.
Fig.3
mixed agar and Mncl2 phantom validation. Gold standard T1 map is obtained from
multi TI IR SE acquisition and gold standard T2 map is from multi TE SE
acquisition. FISP MRF (12s/slice) with partial slice profile correction (SPC),
no SPC and full SPC are shown. Proposed MRF (12s/slice) results without slice
profile correction are also shown.
Fig.1
the proposed combined FISP and PSIF MRF sequence
contains (a)FISP block and (b)PSIF block, and the block pattern varies as in (c). One element of dictionary is shown in (d) for the
proposed MRF and the FISP MRF.