MAMMOGRAPHY APPARATUS
FIG16 is a plan view showing a straight portion of a first side face and a second side face
In the first embodiment and the second embodiment, the shapes of the first side face 26A and the second side face 26B are nearly random, but as shown in FIG16, it is preferable that the first side face 26A and the second side face 26B include a straight portion 88 that crosses the contact face 23 at about 90 degrees, in at least a specific range from the contact face 23. In a case where the first side face 26A and the second side face 26B include the straight portion 88, the subject 60 can easily put an arm or the like on the first side face 26A or the second side face 26B in the MLO imaging. Specifically, there is a case where it is difficult for the subject 60 to raise the arm highly due to so-called frozen shoulder. However, even in the case of such a subject 60, in a case where the straight portion 88 is present in the first side face 26A and the second side face 26B, as long as the subject 60 can lift the arm and elbow up to about the height of the shoulder, it is possible for the subject 60 to put the arm and elbow on the first side face 26A and the second side face 26B. Further, after putting the arm and elbow on the first side face 26A and the second side face 26B, it is not necessary to continuously put excessive stress to the shoulder due to the presence of the straight portion 88, and thus, it is possible to enjoy imaging while holding the weight of the arm to the imaging stand 13. For example, in a case where the entirety of the first side face 26A and the second side face 26B are tilted toward the contact face 23 from the column 11, without the straight portion 88, it is necessary for the subject 60 to lift the arm and elbow up to the tilting angle, and thus, it is difficult to loosen tension of the shoulder in order to continuously put the arm and elbow on the first side face 26A and the second side face 26B.
plan view
21
upper face
16
pressurizing plate
23
contact face
88
straight portion
['1. A mammography apparatus (10) comprising: an X-ray irradiation section (12) that irradiates an X-ray imaging panel (41) with X-rays; and an imaging stand (13) that includes the X-ray imaging panel and a control circuit (42, 43A, 43B) of the X-ray imaging panel, and is provided with an upper face (21) on which a breast of a subject is placed, a lower face (22) that is opposite to the upper face, a contact face (23) that is connected to the upper face and the lower face and comes in contact with a chest wall of the subject, a first side face (26A) and a second side face (26B) that are connected to the upper face, the lower face, and the contact face, and a recess (35) formed by cutting out at least a part of the contact face, wherein the recess has a shape in which among a first ridge portion (31) where the contact face and the upper face are connected to each other, a second ridge portion (32) where the contact face and the lower face are connected to each other, a third ridge portion (33) where the contact face and the first side face are connected to each other, and a fourth ridge portion (34) where the contact face and the second side face are connected to each other,  characterized in that  at least a part of the second ridge portion is cut out, and the first ridge portion, the third ridge portion, and the fourth ridge portion are not cut out.', '12. The mammography apparatus according to any one of claims 1 to 11, wherein the first side face and the second side face include a straight portion that crosses the contact face at 90 degrees, in at least a specific range from the contact face.']