1. A method to generate a magnetic resonance (MR) image, comprising: operating an MR data acquisition unit, with an examination subject therein comprising at least two spin species, to execute a chemical shift imaging multi-echo MR data acquisition sequence in which a predetermined number of MR signals are detected; in a processor, generating a first approximative model that expresses at least one of said predetermined number of MR signals dependent on at least one MR parameter, and generating a second approximative model that expresses at least one of said predetermined number of MR signals dependent on at least one MR parameter, said first and second approximative models differing with regard to the at least one MR parameter that is used to generate the respective approximative model; in said processor, automatically determining a first approximated MR image, that approximates an MR image to be generated, from the detected MR signals, using said first approximative models; in said processor, automatically determining a second approximated MR image, that approximates said MR image to be generated, from the detected MR signals, using said second approximative models; and in said processor, generating said MR image to be generated by executing a mean value calculation using said first and second approximated MR images, and making the determined MR image available in electronic form as a data file at an output of said processor.