A new reconstruction method, symmetry preserved rectilinear transform (SPRT) is proposed to remove the Nyquist ghost and chemical shift artifacts from symmetric echo-planar spectroscopic imaging (EPSI) data. For each metabolite in the spectrum, an additional phase term is added to reshape the zig-zag layout of k-t space samples into a rectilinear layout with all echoes parallel to each other in k-t space. SPRT can eliminate artifacts and significantly improve SNR.
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