Comparison of in vitro chemical exchange saturation transfer (CEST) MRI of glucose (“glucoCEST”) NMR signals of several glucose analogs. Solutions of 20 mM were measured at T=37 °C, saturation pulse duration of 3 s, and attenuation of 2.4 µT, at the 11.7T (Rivlin M, 2018, unpublished results). MTRasym, magnetization transfer asymmetry.