MAMMOGRAPHY APPARATUS
FIG18 is a diagram illustrating an appropriate position of the top of the recess on the contact face  FIG17 is a diagram illustrating a modification example in which a control circuit is disposed to be tilted inside the imaging stand
As in the first to fourth embodiments, in a case where the control circuits such as the first reading circuit 43A and/or the second reading circuit 43B are disposed on the lower face 22 side (rear side) of the X-ray imaging panel 41, it is preferable that the recess 35 is more convex toward the upper face 21 than the control circuits when looking at the imaging stand 13 from the contact face 23. Specifically, as shown in FIG18, when looking at the imaging stand 13 from the contact face 23, the recess 35 is formed so that the top T1 that is the point of the recess 35 that is the closest to the upper face 21 is disposed to be close to the upper face 21 side further than a line F1 that passes through points of the first reading circuit 43A and the second reading circuit 43B that are the closest to the lower face 22 and is parallel to the upper face 21. That is, when looking at the imaging stand 13 from the contact face 23, the recess 35 is formed to have a size that the recess 35 is inserted between the first reading circuit 43A and the second reading circuit 43B. With this configuration, it is possible to compactly form the imaging stand 13 while obtaining the action of the recess 35. Further, since the height of the recess 35 becomes high compared with a case where the top T1 is present on the lower face 22 side further than the line F1, it is possible to easily obtain the action of the recess 35 in the subject 60 of any physique.  Specifically, as shown in FIG17, when looking at the imaging stand 13 from the contact face 23, by lifting an edge portion of the first reading circuit 43A on the side of the recess 35 toward the upper face 21, the edge portion on the side of the recess 35 is tilted to be close to the X-ray imaging panel 41, further than an edge portion to which the flexible board 46 is connected. Further, in the case of the second reading circuit 43B, by lifting the edge portion on the side of the recess 35 toward the upper face 21, the edge portion on the side of the recess 35 is tilted to be close to the X-ray imaging panel 41, further than an edge portion to which the flexible board 46 is connected.
diagram
17
lifting section
35
recess
22
lower face
34
fourth ridge portion
91
region
41
X-ray imaging panel
33
third ridge portion
46
flexible board
23
contact face
13
imaging stand
['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.']