MRI WITH SEPARATION OF DIFFERENT CHEMICAL SPECIES USING A SPECTRAL MODEL

摘要

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, a, 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, a, 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).