1. A method for generating a magnetic resonance (MR) image, comprising: using a processor to prepare a scan sequence for operating an MR scanner in order to obtain acquired MR data from an examination region of an examination object, said scan sequence comprising at least on scan parameter; in said processor, when preparing said scan sequence, automatically determining a first value of said at least one scan parameter for a first subregion of the examination region, and determining a second value of said at least one scan parameter for a second subregion of the examination region; in said processor, also when preparing said scan sequence, determining each of said first value and said second value so as to cause a value of a physical variable, that is influenced by the first value and the second value of the at least one scan parameter, to adhere to a predetermined threshold value; in said processor, generating control signals corresponding to said scan sequence, with the determined first and second values, and providing said control signals from said processor to said MR scanner and thereby operating said MR scanner with so as to execute scan sequence while the examination object is situated in the MR scanner, with said first value of said at least one scan parameter in said first subregion and with said second value of said at least one scan parameter in said second subregion, to obtain said acquired MR data for the examination region; and in said processor, reconstructing an MR image of the examination region from the acquired MR data, and making the reconstructed MR image available in electronic form as a data file from said processor.