Providing a two-dimensional excitation control method and MRI apparatus which can be excited two-dimensionally appropriately according to the imaging conditions, the regions of different materials resonance frequencies are mixed. To this end, when the exciting 2-dimensional 2-dimensional excitation region of the subject formed by a substance having a second resonant frequency of the second and the first material having a first resonant frequency, the two-dimensional excitation and imaging conditions relating to, the resonant frequency of the second and the first resonant frequency, based on the desired region to be excited two-dimensionally for each of material and a second material of the first I excited two-dimensional I set the irradiation frequency of the high-frequency magnetic field for.共振周波数の異なる物質が混在する領域を、撮像条件に応じて適切に2次元励起することが可能なMRI装置及び2次元励起調整方法を提供する。そのために、第1の共振周波数を有する第1の物質と第2の共振周波数を有する第2の物質とを有して成る被検体の2次元励起領域を2次元励起する際に、2次元励起に係る撮像条件と、第1の共振周波数及び第2の共振周波数と、に基づいて、第1の物質と第2の物質についてそれぞれ所望の領域が2次元励起されるように、2次元励起するための高周波磁場の照射周波数を設定する。
