PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging device in which heat generation of a superconducting coil is small, and an error magnetic field due to an eddy current is small.SOLUTION: The magnetic resonance imaging device includes a pair of magnetic poles 1 which face each other across an observation area； an annular magnetic pole projection 2 which is arranged at an outer periphery of the magnetic poles and has a higher electric resistance area along a revolving direction； annular static magnetic field generation means 5 which surrounds the magnetic pole projection； and inclined magnetic field coils 8 which are arranged at counter surfaces of the magnetic poles. Non-magnetic conductor 6 is fixed to the outer periphery of the projection via an insulator.SELECTED DRAWING: Figure 1【課題】超電導コイルの発熱が小さく、かつ渦電流による誤差磁場の小さい磁気共鳴イメージング装置を提供する。【解決手段】観測領域を間にして対向する一対の磁極１と、その外周側に設けられる周回方向に高電気抵抗領域を有する環状の磁極突起部２と、その外周を囲う環状の静磁場発生手段５と、磁極の対向面側に配置される傾斜磁場発生用の傾斜磁場コイル８とを有する磁気共鳴イメージング装置において、前記突起部の外周側に絶縁体を仲介して非磁性良導体６が固定されていることを特徴とする磁気共鳴イメージング装置。【選択図】図１
