PROBLEM TO BE SOLVED: To provide a magnetic resonance imaging apparatus in which a height of a top board can be maintained at a desired height when the top board is moved into a cradle, and a movable type bed device for the magnetic resonance imaging apparatus.SOLUTION: The magnetic resonance imaging apparatus comprises a bed device 110, a cradle, a detection section and a control section. The bed device 110 has a top board 111 on which a subject is placed and a top board support table supporting the top board 111. The cradle has a static magnetic field magnet 101. The detection section detects the height of at least either the top board 111 or the top board support table. The control section, during the period while the top board 111 is moved into the cradle, controls the height of the top board support table so that the height of the top board support table becomes the desired height according to the height detected by the detection section.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】天板が架台内へ移動される際の高さを所望の高さに維持することができる磁気共鳴イメージング装置及び磁気共鳴イメージング装置用移動型寝台装置を提供する。【解決手段】磁気共鳴イメージング装置は、寝台装置110と、架台と、検知部と、制御部とを備える。寝台装置110は、被検体を載置する天板111と、天板111を支持する天板支持台とを有する。架台は、静磁場磁石101を有する。検知部は、天板111及び天板支持台のうち少なくとも一方の高さを検知する。制御部は、天板111が架台内へ移動される間、検知部によって検知された高さに応じて、天板支持台の高さが所望の高さになるように天板支持台の高さの制御を行う。【選択図】図1