%0 Journal Article
%A Chen, Ying
%A Liao, Yupeng
%A Yuan, Lisha
%A Liu, Hui
%A Yun, Seong Dae
%A Shah, Nadim Joni
%A Chen, Zhong
%A Zhong, Jianhui
%T Referenceless one-dimensional Nyquist ghost correction in multicoil single-shot spatiotemporally encoded MRI
%J Magnetic resonance imaging
%V 37
%@ 0730-725X
%C Amsterdam [u.a.]
%I Elsevier Science
%M FZJ-2017-02397
%P 222 - 233
%D 2017
%X Single-shot spatiotemporally encoded (SPEN) MRI is a novel fast imaging method capable of retaining the time efficiency of single-shot echo planar imaging (EPI) but with distortion artifacts significantly reduced. Akin to EPI, the phase inconsistencies between mismatched even and odd echoes also result in the so-called Nyquist ghosts. However, the characteristic of the SPEN signals provides the possibility of obtaining ghost-free images directly from even and odd echoes respectively, without acquiring additional reference scans. In this paper, a theoretical analysis of the Nyquist ghosts manifested in single-shot SPEN MRI is presented, a one-dimensional correction scheme is put forward capable of maintaining definition of image features without blurring when the phase inconsistency along SPEN encoding direction is negligible, and a technique is introduced for convenient and robust correction of data from multi-channel receiver coils. The effectiveness of the proposed processing pipeline is validated by a series of experiments conducted on simulation data, in vivo rats and healthy human brains. The robustness of the method is further verified by implementing distortion correction on ghost corrected data
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000396382200031
%$ pmid:27916658
%R 10.1016/j.mri.2016.11.024
%U https://juser.fz-juelich.de/record/828436