PROBLEM TO BE SOLVED: To reduce the flash coverage of a radiation and to decrease the radiation dose which an examination object receives when a radiation image is acquired when a biopsy is executed.SOLUTION: A mammography apparatus 10 includes a radiation source 24, a collimator 25, and a radiation controller 134. The radiation controller 134 sets the flash coverage of a radiation 22 in a smaller range than the flash coverage of a radiation 22 of the acquired radiation image, obtained before a biopsy needle 50 is punctured in a mammo 20, so that the distal end of a biopsy needle 50 and a biopsy site fit into the range, when the radiation image is acquired in a state that a biopsy needle 50 is punctured in a mammo 20.COPYRIGHT: (C)2013,JPO&INPIT【課題】バイオプシの実施において放射線画像を取得する際に、放射線の照射範囲を縮小して検査対象物が浴びる放射線量を減らす。【解決手段】マンモグラフィ装置10は、放射線源24と、コリメータ25と、放射線制御部134と、を有する。放射線制御部134は、生検針50をマンモ20に穿刺した状態において放射線画像を取得する場合に、生検針50をマンモ20に穿刺する前に取得した放射線画像の放射線22の照射範囲よりも小さい範囲で、且つ生検針50の先端部と生検部位が収まるように放射線22の照射範囲を設定する。【選択図】図9
