Using partially suppressed water signal to improve J-edited proton MRS
Zhengchao Dong1,2, Joshua Kantrowitz1,2, and Hong Wang1,3
1Columbia University, New York, NY, United States, 2New York State Psychiatric Institute, New York, NY, United States, 3Tianjin University, Tianjin, China, People's Republic of
Magnetic field drift and subject motion during J-editing proton MRS scan will not only cause frequency and phase drifts in the spectrum but also
alter the linewidth and lineshape. When the linewidths/shapes of edit-on and
edit-off spectra do not match, the J-difference spectrum will have residue of
Cr peaks; even when edit-on/off spectra match each other, the linebroadening
and distortion will deteriorate the quality of the difference spectrum. In this study, we used
the partially suppressed water signals to match and to transform the edit-on and edit-off spectra so
as to improve the quality of the J-edited spectrum.
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