1. A method of modeling a conventional magnetization transfer (CMT) spectrum using z-spectral data containing information about the CMT, comprising the steps of: acquiring z-spectral data at different offset frequencies; and choosing frequency ranges ±(F2−F1) at which contributions from direct water saturation, novel magnetization transfer (NMT), and chemical exchange saturation transfer (CEST) for magnetization transfer asymmetry are <1% to model the CMT effect contributions to the acquired z-spectral data.