PROBLEM TO BE SOLVED: To provide a mammography apparatus capable of improving efficiency of breast cancer medical examination.SOLUTION: A mammography apparatus comprises: a placement table having a placement surface for a breast a translucent compression plate for compressing the breast placed on the placement table with a compression surface an X-ray tube which is provided so as to face the compression plate with the placement table held therebetween, and emits the X-ray to the breast an X-ray detector which detects the X-ray emitted from the X-ray tube and transmitting through the breast and the compression plate an arm which supports the placement table, the compression plate, and the X-ray tube and a detector movement mechanism which moves the X-ray detector between the imaging position facing the X-ray tube on the compression plate and the retreat position on the side closer to the arm than the imaging position.COPYRIGHT: (C)2015,JPO&INPIT【課題】 乳がん検診の検診効率の向上を可能とする乳房X線撮影装置を提供すること。【解決手段】 乳房の載置面を有する載置台と、前記載置台に載置された前記乳房を、圧迫面で圧迫するための半透明の圧迫板と、前記載置台を挟んで前記圧迫板と対向して設けられ、前記乳房にX線を照射するX線管と、前記X線管から照射され、前記乳房及び前記圧迫板を透過したX線を検出するX線検出器と、前記載置台、前記圧迫板、及び前記X線管を支持するアームと、前記X線検出器を、前記圧迫板上で前記X線管と対向する撮影位置と、前記撮影位置より前記アーム側にある退避位置との間で移動させる検出器移動機構と、を有する。【選択図】 図1
