Faster SPEED Imaging with Ghost Location Information from Central k-Space
Zhaoyang Jin 1 and Qing-San Xiang 2
Institute of Information and Control,
Hangzhou Dianzi University, Hangzhou, Zhejiang, China,
Department, University of British Columbia, Vancouver,
Skipped phase encoding and edge deghosting (SPEED) is an
effective method for scan time reduction. Previously,
three interleaved datasets along PE direction were
acquired to separate the overlapped ghosts by solving a
least-square problem. This study reveals that overlapped
ghosts can be separated by using only two interleaved
k-space datasets since the ghost order index (n1, n2)
can be readily calculated from central k-space data.
Results from phantom and in vivo data demonstrated
feasibility of the proposed method, leading to further
acceleration of SPEED imaging.
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