MAMMOGRAPHY APPARATUS
FIG6 is a diagram illustrating a disposition of an X-ray imaging panel or the like in the imaging stand
As the first reading circuit 43A and the second reading circuit 43B are disposed on the rear side of the X-ray imaging panel 41, as shown in FIG6, the imaging stand 13 has a configuration in which an interval between the first side face 26A and the second side face 26B on the side of the contact face 23 (X-directional positive side) is narrower than that on the side of the column 11 (X-directional negative side). Accordingly, in the vicinity of the contact face 23 where the interval between the first side face 26A and the second side face 26B is narrow, the imaging stand 13 has a non-image region 49 of a small width (the length in the Y direction). The non-image region 49 is a region where an imaging face of the X-ray imaging panel 41 is not disposed, and thus, an X-ray image is not taken. In this embodiment, the width of the imaging stand 13 is about 360 mm, and the width of each of both the non-image regions 49 is about 30 mm. Further, in a portion of the imaging stand 13 on the side of the column 11, a support member (not shown) for connecting the imaging stand 13 to the column 11 and supporting the imaging stand 13 with respect to the column 11 is provided. Accordingly, the portion of the imaging stand 13 on the side of the column 11 has a wide interval between the first side face 26A and the second side face 26B further than that on the side of the contact face 23.
diagram
51
region
35
recess
46
flexible board
22
lower face
34
fourth ridge portion
31
first ridge portion
33
third ridge portion
42
switching circuit
49
non-image region non-image regions
41
X-ray imaging panel
21
upper face
36
boundary line
23
contact face
32
second ridge portion
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.', '5. The mammography apparatus according to any one of claims 1 to 4, wherein a top of a boundary line between the recess and the contact face is disposed at the center between the first side face and the second side face, when seen from the contact face.']