Overdiscrete echo-planar spectroscopic imaging with correlated higher-order phase correction.

The overdiscrete reconstruction framework with high-order phase correction allowed to effectively correct for distortions, related to B0 inhomogeneities, B0 drift, eddy currents, and system vibrations. Furthermore, the presented reconstruction method, combined with EPSI acquisitions, demonstrated improved measurement stability, substantial SNR enhancement, better spectral linewidth, and effective artifact removal.