The invention relates to a method of MR imaging of at least two chemical species having different MR spectra. The method comprises the steps of: generating MR signals of the chemical species by subjecting a portion of a body (10) to an imaging sequence of RF pulses and switched magnetic field gradients, which imaging sequence is determined by a set of imaging parameters (TR, α, TE) acquiring the MR signals determining a spectral model of at least one of the chemical species, which spectral model is associated with the set of imaging parameters (TR, α, TE) separating signal contributions of the at least two chemical species to the acquired MR signals on the basis of the spectral model and computing a MR image from the signal contributions of one of the chemical species. Moreover, the invention related to a MR device (1) and to a computer program for a MR device (1).
