PROBLEM TO BE SOLVED: To reduce noise propagating through a patient space.SOLUTION: A magnetic resonance imaging device includes a static magnetic field magnet 101, a gradient magnetic field coil 103, a bore tube, and a holding part. The static magnetic field magnet 101 is formed into a roughly cylindrical shape. The gradient magnetic field coil is formed into a roughly cylindrical shape inside the static magnetic field magnet. The bore tube is formed into a roughly cylindrical shape inside the gradient magnetic field coil 103. The holding part holds a roughly cylindrical space between the static magnetic field magnet 101 and the gradient magnetic field coil 103, or between the gradient magnetic field coil 103 and the bore tube in an airtight condition at the end part of the gradient magnetic field coil 103. The holding part includes a base ring shaped so as to be accommodated in the roughly cylindrical space, a seal part that comes in contact with a wall surface forming the roughly cylindrical space provided at least on an inner peripheral side or an outer peripheral side of the base ring, and a support part for supporting the base ring from outside the roughly cylindrical space.SELECTED DRAWING: Figure 2【課題】患者空間に伝わる騒音を低減させる。【解決手段】磁気共鳴イメージング装置は、静磁場磁石１０１と、傾斜磁場コイル１０３と、ボアチューブと、保持部とを備える。静磁場磁石１０１は、略円筒形状に形成される。傾斜磁場コイルは、前記静磁場磁石の内側に略円筒形状に形成される。ボアチューブは、前記傾斜磁場コイル１０３の内側に略円筒形状に形成される。保持部は、前記傾斜磁場コイル１０３の端部において、前記静磁場磁石１０１と前記傾斜磁場コイル１０３との間、又は、前記傾斜磁場コイル１０３と前記ボアチューブとの間の略円筒状空間を密閉状態に保つ。前記保持部は、前記略円筒状空間に収まる形状のベースリングと、前記ベースリングの内周側又は外周側の少なくとも一方に設けられた前記略円筒状空間を形成する壁面と接するシール部と、前記ベースリングを前記略円筒状空間の外側から支持する支持部とを備える。【選択図】図２
