An echo-planar spectroscopic imaging sequence has been demonstrated incorporating semi-adiabatic band-limited refocusing (SABRE) pulses. The sequence simultaneously addresses two major obstacles to the implementation of high-resolution spectroscopic imaging at ultrahigh field: presence of B1 field inhomogeneity and aliasing due to bandwidth limitation in the spectral-spatial readout. Both bi-polar and flyback variants of the EPSI readout have been implemented in a user-selectable manner. An accompanying Matlab-based reconstruction has been developed which performs extraction and complete processing from raw data including eddy current compensation, phase reversal of even echoes in the bi-polar readout and removal of spurious points acquired during gradient switching.
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