PROBLEM TO BE SOLVED: To cause the breasts to be drawn into breast holding units with a subject held in a manner as not to easily move, then position the breast holding units, and capture X-ray tomographic images.SOLUTION: Provided is a mammography apparatus, in which an X-ray source for projecting X rays and a detection unit for detecting X rays are arranged opposite to each other, X rays are projected while rotating the X-ray source and the detection unit around the breasts, and tomographic images of the breasts are captured, the mammography apparatus comprising: an air pressure control unit for controlling the internal pressure of breast holding units such that the internal pressure becomes negative, to thereby cause the breasts to be drawn into the breast holding units and positioning units for positioning the breast holding units in hollow holes formed between the X-ray source and the detection unit.COPYRIGHT: (C)2015,JPO&INPIT【課題】 被検者を動かないようにした状態で乳房を乳房保持部に引き込み、乳房保持部を位置決めしてX線断層画像の撮影を行うこと。【解決手段】X線を照射するX線源と、X線を検出する検出部とを対向して配置し、X線源と検出部とを乳房の周りで回転させながらX線を照射して、乳房の断層像を撮影する乳房X線撮影装置は、乳房を保持する乳房保持部の内部の圧力を負圧に制御することにより、乳房を乳房保持部に引き込む空圧制御部と、X線源と検出部との間に形成された中空孔内に、乳房保持部を位置決めする位置決め部と、を備える。【選択図】 図4
