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The sequence schemes. A, Traditional EPSI sequence makes use of a slice selective amplitude-modulated refocusing pulse. B, The proposed new 2π-CSAP-EPSI sequence is using a CSAP pair. SLOW spectral-editing sequence scheme integrated into EPSI is based on the scheme displayed in (A). C, Chemical selectively refocusing the full offset frequency range of the J-coupled spin system to be edited. C′, Chemical selectively refocusing the partial range of interested spins
