the static magnetic field generating means is disposed around the imaging space in which the subject is placed, to generate a static magnetic field in the imaging space, disposed in the imaging space side of the static magnetic field generating means, a gradient magnetic field in the imaging space The magnetic resonance imaging apparatus and the gradient magnetic field generating means for generating, disposed in the imaging space side of said gradient magnetic field generating means, with a high frequency magnetic field generating means for generating a high frequency magnetic field in the imaging space, the static magnetic field generating means The shape of the outer and / or inner side of the cross-section in the direction perpendicular to the static magnetic field is substantially polygonal.被検体が配置される撮影空間の周りに配置され、前記撮影空間に静磁場を発生させる静磁場発生手段と、前記静磁場発生手段の前記撮影空間側に配置され、前記撮影空間に傾斜磁場を発生させる傾斜磁場発生手段と、前記傾斜磁場発生手段の前記撮影空間側に配置され、前記撮影空間に高周波磁場を発生する高周波磁場発生手段を備えた磁気共鳴イメージング装置において、前記静磁場発生手段は前記静磁場と垂直な方向への断面の内側及び／あるいは外側の形状が、略多角形である。
