Phantom test for the PC-FID encoding sequence (Fig. 1d) performed on three tubes containing separate choline (III: Cho, 50 mM), N-Acetyl-L-Aspartic acid (II: NAA, 250 mM) and sodium lactate (I: Lac, 125 mM) solutions, immersed in a fourth, 15 mm diameter water tube. (a) Reference SEMS image collected for full-width at half maximum (FWHM) values of ~15 Hz. (b) Six spectra acquired using the sequence in Fig. 1d with an M = 6 PC phase modulation. (c) Well-separated spectra corresponding to the resonances I, II and III.