| 摘要 |
A mammography apparatus capable of obtaining a breast image having an optimum density with reduced burden on the subject. The apparatus includes a radiation irradiation section (3) and an object table (4) connected to an arm (5) such that they face each other, and the breast (M) compressed onto the object table (4) using a compression paddle (7) is imaged by rotating the arm (5) by an arm rotation means (91) according to the imaging direction. In the apparatus, the size of the breast (M) is detected, and the position of a dose detector (20) is moved along the side of the object table (4) facing the chest wall of the subject according to the detected size of the breast and the angle of rotation (¸) of the arm (5) when rotated by the arm rotation means (91). |
