J-resolved MRSI is a powerful tool for separating overlapping resonances and detecting coupled species such as GABA and glutamate, which are of great interest to brain studies. However, a major practical limitation of J-resolved MRSI lies in its long data acquisition time. In this work, we present 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. Our preliminary phantom results demonstrate the proposed method can achieve highly efficient fully sampled 2D J-resolved MRSI with increasing chemical shift separation and detection of coupled species.
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