Ke Dai1, Qingjia Bao2,3, Hao Chen1, Yiling Liu1, and Zhiyong Zhang1
1School of Biomedical Engineering, Shanghai, China, 2Wuhan United Imaging Life Science Instruments Co., Ltd, Wuhan, China, Wuhan, China, 3Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot, Israel
1School of Biomedical Engineering, Shanghai, China, 2Wuhan United Imaging Life Science Instruments Co., Ltd, Wuhan, China, Wuhan, China, 3Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot, Israel
We propose a novel fast
fully sampled 2D J-resolved MRSI, termed as J-resolved xSPEN spectroscopy,
combining echo planar imaging acquisition and turbo spin echo train evolution.
Figure 2 (a)The representative 2D J-resolved spectrum
from the spatial location marked by the red dot. Please noting the tilting
feature of the spectrum due to the mixing chemical shift and J splittings along
the spectral dimension. (b) 2D J-resolved spectrum with J-decoupled chemical
shift dimension.
Figure
1 (a) 2D J-resolved
xSPEN MRSI sequence performing multiple scans with increasing time (t1)
evolution to achieve the chemical shift dimension, while the J couplings are
obtained by repeating the distortion-free echo-planar imaging-based acquisition
of xSPEN in a turbo spin echo train evolution way. (b) 2D J-resolved xSPEN MRSI sequence with pure
chemical shift dimension.