PROBLEM TO BE SOLVED: To provide a bed device and a diagnostic imaging apparatus which enable position accuracy of a top of table to be improved.SOLUTION: The bed device includes a top of table 43 on which a subject P is placed and held, a roller 44 which is disposed under the top of table 43 and supports the top of table 43, a longitudinal movement drive part 45 which drives the top of table 43 so as to move in the longitudinal direction and drives the rollers 44 so as to rotate, and a bed support part 46 to support the longitudinal movement drive part 45. The longitudinal movement drive part 45 drives the rollers 44 so as to rotate at a rolling speed in a direction rolling with respect to the top of table 43 matching the movement of the top of table 43.COPYRIGHT: (C)2012,JPO&INPIT【課題】天板の位置精度の向上を図ることができる寝台装置及び画像診断装置を提供する。【解決手段】被検体Pが載置される天板43と、天板43の下側に配置され、天板43を支持するローラ44と、天板43を長手方向へ移動駆動すると共にローラ44を回転駆動する長手動駆動部45と、長手動駆動部45を支持する寝台支持部46とを備え、長手動駆動部45は、天板43の移動に合わせて、天板43に対して転がる方向へ転がる速度でローラ44を回転駆動する。【選択図】 図2
