Setting of a magnetic resonance imaging apparatus and rf shimming parameters

Subject during MR imaging, while particular reducing local SAR in the body tissue, to improve B1 uneven, the present invention is the plurality of illumination channels based on RF shimming parameters corresponding to a plurality of illumination channels the controlled respectively, when executing the imaging sequence of irradiating RF magnetic field to the subject, impose constraints for at least one of the plurality of principal components obtained by principal component analysis of RF shimming parameters characterized by using the RF shimming parameters found by.