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Abstract #4296

Symmetry Preserved Rectilinear Transform(SPRT): Optimized Reconstruction of Echo Planar Spectroscopic Image for Hyperpolarized [1-13C]-Pyruvate

Zhan Xu1, Joshua S. Niedzielski1, Keith A. Michel1, Christopher M. Walker1, Samuel A. Einstein1, and James A. Bankson1

1Imaging Physics, UT MD Anderson Cancer Center, Houston, TX, United States

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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