PROBLEM TO BE SOLVED: To provide a structure for acquiring a vibration reduction effect for a gradient magnetic field coil in a magnetic resonance imaging apparatus without reducing a space that a person to be examined enters.SOLUTION: A magnetic resonance imaging apparatus includes: a static magnetic field generation part provided with a static magnetic field generation magnet for generating a uniform static magnetic field in a space where a person to be examined is accommodated, a gradient magnetic field generation part provided with a gradient magnetic field coil for generating a gradient magnetic field in a manner to be superimposed on the static magnetic field and an image processing part for detecting an NMR signal generated from the person to be examined by the irradiation of a high frequency magnetic field, and imaging the detected signal. The gradient magnetic field coil is provided along the inner periphery of the cylindrical cavity of the static magnetic field generation magnet. The magnetic resonance imaging apparatus also includes a damper mechanism for reducing the vibration caused by the gradient magnetic field coil by inserting an elastic storage bag filled with fluid in a gap between the inner peripheral side of the static magnetic field generation magnet and the gradient magnetic field coil.COPYRIGHT: (C)2015,JPO&INPIT【課題】磁気共鳴イメージング装置において、被検者が入る空間を縮小されることなく、傾斜磁場コイルに振動低減効果を得る構造を提供する。【解決手段】被検者を収容する空間に均一な静磁場を発生させる静磁場発生磁石を具備する静磁場発生部と、静磁場へ重畳して傾斜磁場を発生させる傾斜磁場コイルを具備する傾斜磁場発生部と、高周波磁場の照射により被検者から発生するNMR信号を検出し検出された信号を画像化する画像処理部とを有し、傾斜磁場コイルは、静磁場発生磁石の円筒状空洞の内周に沿って設けられ、静磁場発生磁石の内周側と傾斜磁場コイルとの間に生じる間隙に流動体が充填された伸縮性を有する収納袋を挿入することで、傾斜磁場コイルが引き起こす振動を低減するダンパー機構を有することを特徴とする。【選択図】図2
