Radiographic device and radiographic system

Abstract

To provide a technique that can prevent an increase in the thickness of a housing of a radiographic device, while ensuring rigidity required for a support base that supports a radiation detection panel.SOLUTION: A radiographic device comprises: a radiation detection panel 120 that detects incident radiation 201; a support base 130 that supports the radiation detection panel 120; and a housing that includes the radiation detection panel 120 and the support base 130. The support base 130 has, in a thickness direction (Z direction) of the housing that is an incident direction of the radiation 201, a first area 210 that has a first thickness and is formed of a first member 131 as foam, and a second area 220 that has a second thickness smaller than the first thickness and is formed of a second member 132 having higher rigidity than the foam.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a radiation imaging apparatus and a radiation imaging system.

Background Art

[0002] As a radiation imaging apparatus used for medical image diagnosis and non-destructive inspection, digital radiography (DR) has been put into practical use. DR uses a radiation detection panel to detect X-rays, which are a type of radiation that has passed through a subject, and converts them into electrical signals to generate digital radiation images. The radiation imaging apparatus has been miniaturized, and many portable types are used in medical fields. Since portable radiation imaging apparatuses are subject to impacts such as collisions and drops during transportation, it is required to achieve both light weight and robustness.

[0003] Generally, a radiation detection panel is supported by a support base and stored in the housing of a radiation imaging apparatus. The support base has a function of protecting the radiation detection panel from impacts and loads received by the housing. Therefore, in conventional radiation imaging apparatuses, members with high rigidity have been preferably used for the support base. In recent years, in order to reduce the weight of the radiation imaging apparatus, the support base may be configured using a porous member having a large number of voids (for example, a foam of a hard resin). In this regard, Patent Document 1 discloses a technique for enhancing the strength of a support base that supports a radiation detection panel by reinforcing a region where the strength required for the support base cannot be obtained only by the foam with a plate material.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] It is difficult to mold a foam into a thin shape due to its material properties. In particular, when molding a foam by the bead foaming method described in Patent Document 1, it is necessary to ensure a thickness that allows sufficient filling of the foam beads. In addition, since a foam has a lower rigidity than materials (e.g., light alloys) that have been used for conventional support bases, the rigidity required for the support base must be obtained by increasing its thickness. Therefore, when the support base is made of a foam, it is difficult to make the support base thin. In other words, it is difficult to prevent the housing of the radiation imaging device from becoming thicker (too thick).

[0006] On the other hand, a radiation imaging device requires space for mounting various added-value configurations. For example, in Patent Document 2, a concave shape is provided in the housing of the radiation imaging device, thereby providing a function that allows a user to easily grip the housing. In addition, since the thickness of a radiation imaging device is also specified in the Japanese Industrial Standards (JIS), it is not appropriate to secure a space for adding functions that exceeds the thickness specified in the JIS.

[0007] The present disclosure has been made in consideration of these problems, and aims to provide a technology that can suppress an increase in thickness of the housing of a radiation imaging device while ensuring the rigidity required of a support base that supports a radiation detection panel. [Means for solving the problem]

[0008] The radiation imaging apparatus of the present disclosure includes a radiation detection panel that detects incident radiation, a support base that supports the radiation detection panel, and a housing that contains the radiation detection panel and the support base, wherein the support base has, in a thickness direction of the housing which is the incident direction of the radiation, a first region having a first thickness and made of a first member that is a foam, and a second region having a second thickness smaller than the first thickness and made of a second member that is more rigid than the foam. Effect of the Invention

[0009] According to the present disclosure, it is possible to prevent the housing of a radiation imaging apparatus from becoming thicker while ensuring the rigidity required for a support base that supports a radiation detection panel. [Brief description of the drawings]

[0010] [Figure 1] 1 is a diagram illustrating an example of a schematic configuration of a radiation imaging system according to a first embodiment. [Diagram 2] FIG. 2 is a diagram showing an example of an internal configuration of a cross section taken along line AA' shown in FIG. 1(a) in a radiation imaging apparatus according to a first embodiment. [Diagram 3] 2 is a diagram showing an example of an internal configuration of a cross section taken along line AA' shown in FIG. 1(a) in a radiation imaging apparatus according to a first embodiment. [Figure 4] 2 is a diagram showing an example of the configuration of a support base in the radiation imaging apparatus according to the first embodiment. FIG. [Diagram 5] 2 is a diagram showing an example of the configuration of a support base in the radiation imaging apparatus according to the first embodiment. FIG. [Figure 6] 5 is a diagram showing an example of a case where a load is applied from a subject to the front cover of the radiation imaging apparatus according to the first embodiment. FIG. [Figure 7] 2 is a diagram showing an example of an internal configuration of a cross section taken along line AA' shown in FIG. 1(a) in a radiation imaging apparatus according to a first embodiment. [Figure 8] FIG. 11 is a diagram showing a first example of the configuration of a radiation imaging apparatus according to a second embodiment. [Figure 9] FIG. 11 is a diagram showing a second example of the configuration of a radiation imaging apparatus according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the mode (embodiment) for carrying out the present disclosure will be described with reference to the drawings. However, the details of the method and structure shown in each embodiment of the present disclosure are not limited to those shown in the text and drawings. In this specification, it is preferable to apply X-rays as the radiation, but it is not limited to X-rays, and α-rays, β-rays, γ-rays, particle rays, cosmic rays, etc. are also included.

[0012] (First embodiment) First, the first embodiment will be described.

[0013] Fig. 1 is a diagram showing an example of a schematic configuration of a radiation imaging system 10 according to the first embodiment. Specifically, Fig. 1(a) is a diagram showing an example of a schematic configuration of the radiation imaging system 10 according to the first embodiment, and Fig. 1(b) is a diagram showing the radiation imaging apparatus 100 shown in Fig. 1(a) as viewed from the rear surface 102 side opposite to the incident surface 101 on which radiation 201 is incident. In Fig. 1(a) and Fig. 1(b), the same components are denoted by the same reference numerals.

[0014] As shown in FIG. 1( a ), a radiation imaging system 10 includes a radiation imaging apparatus 100 and a radiation generating apparatus 200 .

[0015] The radiation generating device 200 is a device that irradiates the subject H and the radiation imaging device 100 with radiation 201 .

[0016] The radiation imaging apparatus 100 is an apparatus that detects incident radiation 201 (including radiation 201 that has passed through the subject H) and acquires radiation image data of the subject H. The radiation image data acquired by this radiation imaging apparatus 100 is transferred to, for example, an external device, and a radiation image based on the radiation image data is displayed on a monitor of the external device and used for diagnosis or the like.

[0017] FIG. 1(a) illustrates an incident surface 101, which is a surface on which radiation 201 is incident, a rear surface 102 located on the opposite side of the incident surface 101 (opposed to the incident surface 101), and a side surface 103 viewed from the incident direction of the radiation 201 in the radiation imaging device 100. The housing 110 of the radiation imaging device 100 includes a front cover 111 having the incident surface 101, a rear cover 112 having the rear surface 102, and a frame 113 having a side surface 103 and joining the front cover 111 and the rear cover 112 at their outer edges. Here, in this embodiment, the front cover 111 and the rear cover 112 are formed of flat plates (planes), and the frame 113 does not necessarily have to be formed of a flat plate (plane). For example, the frame 113 having the side surface 103 may be formed of a curved surface in order to make it difficult for a subject H, such as a patient, to feel pain when he or she takes a supine position on the housing 110 of the radiation imaging device 100. In this embodiment, the members constituting the housing 110 may be integrated, or may be made up of a plurality of members.

[0018] 1(a) also illustrates an XYZ coordinate system in which the incident direction (vertical direction) of radiation 201 is defined as the Z direction, and two directions perpendicular to the Z direction and perpendicular to each other are defined as the X direction and the Y direction. Here, in this embodiment, the Z direction in the XYZ coordinate system shown in FIG. 1(a) is the incident direction of radiation 201 described above, and corresponds to the normal direction of the incident surface 101 and the thickness direction of the housing 110.

[0019] Furthermore, the front cover 111 in FIG. 1(a) displays an index 114 indicating the range of an effective imaging area for detecting radiation 201 that has passed through the subject H in a radiation detection panel (a radiation detection panel 120 in FIG. 2, which will be described later) contained inside the housing 110.

[0020] Fig. 1(b) illustrates an XYZ coordinate system corresponding to the XYZ coordinate system illustrated in Fig. 1(a). A recess 115 is provided in rear cover 112 having rear surface 102 illustrated in Fig. 1(b) to allow a user to easily hold housing 110. Here, in this embodiment, the depth of recess 115 is not particularly limited, but it is more preferable from the viewpoint of usability that the depth is half or more of the distance between incident surface 101 and rear surface 102.

[0021] Fig. 2 is a diagram showing an example of the internal configuration of the radiation imaging apparatus 100 according to the first embodiment in a cross section taken along line A-A' shown in Fig. 1(a). In Fig. 2, the same components as those shown in Fig. 1 are given the same reference numerals, and detailed description thereof will be omitted. Fig. 2 also shows an XYZ coordinate system corresponding to the XYZ coordinate system shown in Fig. 1(a). That is, since line A-A' shown in Fig. 1(a) is a line along the Y direction, Fig. 2 is a diagram showing an example of the internal configuration of the radiation imaging apparatus 100 in a cross section taken along the Y direction.

[0022] The radiation imaging apparatus 100 has a housing 110 therein that houses a radiation detection panel 120, a support base 130, a shock absorbing sheet 140, electric components 150, and a fixing mechanism 160.

[0023] In FIG. 2, the frame 113 having the side surface 103 may be composed of a single component, or may be divided into a plurality of components. In the radiation imaging device 100, radiation (e.g., X-rays) 201 that has passed through the subject H enters the radiation detection panel 120 through the front cover 111 and the shock absorbing sheet 140. Therefore, if the material constituting the front cover 111 is made of a substance with a large atomic weight, the amount of transmitted radiation (e.g., X-rays) 201 decreases, leading to a decrease in the image quality of the acquired radiation image data, or making it necessary to increase the dose of the radiation 201. Therefore, the material constituting the front cover 111 is often basically a resin material. In particular, the front cover 111 is desirably made of CFRP from the viewpoints of weight and robustness. In this case, the thickness of the front cover 111 made of CFRP is desirably 1.5 mm or less, more desirably 1.0 mm or less. The thickness of the front cover 111 here corresponds to the length of the front cover 111 in the Z direction, which is the incident direction of the radiation 201 and the thickness direction of the housing 110. On the other hand, the rear cover 112 does not necessarily have to be made of a resin material because it has little effect on the amount of radiation 201 transmitted through it. However, in order to achieve both weight reduction and robustness of the entire radiography apparatus 100, it is preferable to make the rear cover 112 from CFRP like the front cover 111.

[0024] The radiation detection panel 120 detects the radiation 201 that has passed through the front cover 111 and the impact absorbing sheet 140 and is incident thereon, as an image signal related to radiation image data.

[0025] The support base 130 is a base that supports the radiation detection panel 120 from the rear surface 102 side. The support base 130 supports the radiation detection panel 120 by bonding a surface of the radiation detection panel 120 on the rear surface 102 side, which is approximately parallel to the incident surface 101, to a surface of the support base 130 on the incident surface 101 side. However, the radiation detection panel 120 does not have to be directly bonded to the support base 130, and may be bonded to the support base 130 via, for example, a shielding plate. The support base 130 is configured to include a first member 131 and a second member 132. Here, the first member 131 has a first thickness in the Z direction, which is the incident direction of the radiation 201 and the thickness direction of the housing 110, and is a foam member. The second member 132 has a second thickness that is smaller than the first thickness, which is the thickness of the first member 131, in the incident direction of the radiation 201 and in the Z direction, which is the thickness direction of the housing 110, and is a member other than a foam and has higher rigidity than the above-mentioned foam.

[0026] The shock absorbing sheet 140 is disposed between the front cover 111 having the incident surface 101 and the radiation detection panel 120. The shock absorbing sheet 140 has a function of protecting the radiation detection panel 120 from loads and shocks received by the housing 110 (for example, the front cover 111).

[0027] The electrical components 150 are disposed between the rear cover 112 having the rear surface 102 and the support base 130. The electrical components 150 include, for example, a battery that is a power supply component that supplies power to the radiation detection panel 120, and a printed circuit board having mounted components on both sides.

[0028] The fixing mechanism 160 is a mechanism for fixing the electric component 150 to the second member 132 of the support base 130. The fixing mechanism 160 is configured to include a female thread structure 161 and a screw 162, and the screw 162 is inserted into the female thread structure 161 via the electric component 150 to fix the electric component 150 to the second member 132 of the support base 130. Note that in this embodiment, the fixing mechanism 160 is not limited to the above-mentioned female thread structure 161, and a fixing mechanism using, for example, a snap fit may be applied.

[0029] Next, the support base 130 will be described in detail. As described above, the support base 130 is configured as one component by joining the first member 131 made of foam and the second member 132 made of a member other than foam and having higher rigidity than foam. Each of the first member 131 and the second member 132 does not necessarily have to be one type of member, and may be configured of multiple types of members.

[0030] Furthermore, the support base 130 in this embodiment has a first region 210 made of a first member 131 and a second region 220 made of a second member 132 in the Z direction, which is the incident direction of the radiation 201 and the thickness direction of the housing 110. Specifically, FIG. 2 shows a form in which the support base 130 has a plurality of first regions 210 and a plurality of second regions 220. Note that this embodiment also includes a form in which the support base 130 has a plurality of at least one of the first region 210 and the second region 220, and a form in which the support base 130 has one each of the first region 210 and the second region 220. That is, in this embodiment, the support base 130 includes a form in which the support base 130 has one or more first regions 210 and one or more second regions 220.

[0031] As shown in FIG. 2, by reducing the thickness (length of the second region 220 in the Z direction) of the second region 220 made of the second member 132, a space for forming a deep recess 115 for a user to grip the housing 110 can be secured. Similarly, by reducing the thickness (length of the second region 220 in the Z direction) of the second region 220 made of the second member 132, a space for arranging the electric component 150 that requires a large space in the thickness direction (Z direction) of the housing 110 can be secured. That is, in the support base 130 shown in FIG. 2, the region in which the recess 115 is provided in the thickness direction (Z direction) of the housing 110 is the above-mentioned second region 220, and the region in which the electric component 150 is arranged is the above-mentioned second region 220. In order to arrange the electric component 150 in the above-mentioned second region 220, the thickness (length of the second region 220 in the Z direction) of the second region 220 is preferably about 0.5 mm to 1.5 mm. Furthermore, the fixing mechanism 160 fixes the electrical component 150 and the second member 132 of the support base 130 in the second region 220 of the support base 130 .

[0032] In this embodiment, the manufacturing method of the first foam member 131 is not particularly limited, but a bead-method foam is suitable from the viewpoint of moldability and strength. In the bead-method foam, a resin impregnated with a foaming agent is heated to generate pre-expanded foam beads, which are then heated in a mold to further expand and fuse together to form a foam. Examples of the resin material used for the foam beads include polyethylene, polypropylene, polystyrene, polyurethane, polyethylene terephthalate, and polyphenylene ether. One of these resin materials may be used alone, or two or more may be used in combination.

[0033] The second member 132 is one or more kinds of members that are not foam. The second member 132 is preferably one or more kinds of members that are more rigid than a foam and have a higher specific gravity than a foam. Specifically, the second member 132 is preferably a member that includes at least one or more kinds of materials selected from light alloy materials such as magnesium alloy and aluminum alloy, and resin materials such as CFRP, ABS, and polycarbonate.

[0034] Fig. 3 is a diagram showing an example of the internal configuration of the radiation imaging apparatus 100 according to the first embodiment in a cross section taken along line A-A' shown in Fig. 1(a). In Fig. 3, the same components as those shown in Fig. 2 are given the same reference numerals, and detailed description thereof will be omitted. Fig. 3(a) also shows an XYZ coordinate system corresponding to the XYZ coordinate system shown in Fig. 2.

[0035] 3 illustrates a surface 130a of the support base 130 facing the radiation detection panel 120. The surface 130a of the support base 130 includes an area 131a of the first member 131, an area 132a of the second member 132, and a boundary portion 133a between the first member 131 and the second member 132.

[0036] 3 also illustrates a joint surface 310 which is a joint between the first member 131 and the second member 132 in the support base 130. This joint surface 310 is a surface where the first member 131 is joined to the surface 132b (surface on the rear surface 102 side) of the second member 132 opposite to the radiation detection panel 120 side of the second member 132. The joint surface 310 illustrated in FIG. 3 is a surface substantially parallel to the incident surface 101. In this embodiment, by making the joint surface 310 a surface substantially parallel to the incident surface 101, it is easy to ensure the strength required for the joint surface 310. The first member 131 and the second member 132 are joined in a form in which they overlap at the joint surface 310.

[0037] 3(b) to 3(d) are diagrams showing configuration examples of the region 300 including the bonding surface 310 shown in FIG. 3(a).

[0038] FIG. 3(b) is a diagram showing a configuration example in which the first member 131 and the second member 132 are joined by an adhesive 320. By ensuring a large width 311 of the joint surface shown in FIG. 3(b), the strength of the joint surface (joint portion) 310 can be increased. However, from the viewpoint of weight reduction, it is advantageous to make the second member 132, which has a high specific gravity, smaller. Therefore, the width 311 of the joint surface shown in FIG. 3(b) is appropriately about 10 mm to 20 mm. As for the type of the adhesive 320, epoxy-based, acrylic-based, urethane-based, etc. can be mentioned. However, in consideration of ensuring the strength of the joint surface (joint portion) 310, it is preferable to use an epoxy-based adhesive.

[0039] FIG. 3(c) is a diagram showing a configuration example in which the first member 131 and the second member 132 are joined by an adhesive sheet 330.

[0040] FIG. 3(d) is a diagram showing a configuration example in which the first member 131 and the second member 132 are joined by screws 340 and a female screw structure 351. In the configuration example shown in this FIG. 3(d), it is necessary to provide the female screw structure 351 in the foamed first member 131. In this case, the female screw structure 351 may be directly provided in the foamed first member 131, or a separate member 350 having the female screw structure 351 may be provided in the foamed first member 131 as shown in FIG. 3(d). As shown in FIG. 3(d), as a method of providing the separate member 350 in the foamed first member 131, a method of integrally molding at the time of molding, a method of press-fitting after molding, a method of inserting after molding and fixing with an adhesive, etc. can be mentioned.

[0041] Also, in the vicinity of the joint surface (joint portion) 310, when the difference in rigidity between the first member 131 and the second member 132 is large, stress concentrates at the location where the rigidity switches when a bending moment is applied to the support base 130, and there is a possibility that the support base 130 may be damaged. Therefore, as a countermeasure, as shown in FIG. 4, it is conceivable to configure the support base 130.

[0042] Fig. 4 is a diagram showing an example of the configuration of the support base 130 in the radiation imaging apparatus 100 according to the first embodiment. In Fig. 4, the same components as those shown in Fig. 2 and Fig. 3 are denoted by the same reference numerals, and detailed description thereof will be omitted. Fig. 4 also shows an XYZ coordinate system corresponding to the XYZ coordinate system shown in Fig. 2 and Fig. 3(a).

[0043] In FIG. 4, in a region including a boundary portion 133a between the first member 131 and the second member 132 on the surface 130a of the support base 130 on the radiation detection panel 120 side, the thickness (first thickness) of the first member 131 in the thickness direction (Z direction) of the housing 110 gradually changes. Specifically, the first thickness of the first member 131 gradually decreases in a direction from the first region 210 made of the first member 131 toward the second region 220 made of the second member 132. In this manner, by gradually decreasing the first thickness of the first member 131 toward the end portion of the first member 131, it is possible to alleviate stress concentration occurring near the joint surface (joint portion) 310. Note that in the present disclosure, the thickness (second thickness) of the second member 132 may be changed instead of the thickness (first thickness) of the first member 131, or both the thickness (first thickness) of the first member 131 and the thickness (second thickness) of the second member 132 may be changed.

[0044] Next, the area around the boundary portion 133a between the first member 131 and the second member 132 on the surface 130a of the support base 130 facing the radiation detection panel 120 will be described with reference to FIG.

[0045] Fig. 5 is a diagram showing an example of the configuration of the support base 130 in the radiation imaging apparatus 100 according to the first embodiment. In Fig. 5, the same components as those shown in Fig. 2 to Fig. 4 are denoted by the same reference numerals, and detailed description thereof will be omitted. Fig. 5 also shows an XYZ coordinate system corresponding to the XYZ coordinate system shown in Fig. 2 to Fig. 4.

[0046] Since the support base 130 in this embodiment is formed into one component by joining different members, the first member 131 and the second member 132, a step 510 may occur near the boundary portion 133a due to a difference in height between the first member 131 and the second member 132, as shown in Fig. 5. As shown in Fig. 5, depending on the imaging method using the radiation imaging apparatus 100, a large load K may be applied from the front cover 111, for example, when the subject H stands on the radiation imaging apparatus 100.

[0047] Fig. 6 is a diagram showing an example of a case where the front cover 111 of the radiation imaging apparatus 100 according to the first embodiment receives a load K from a subject H. In Fig. 6(a) and Fig. 6(b), the same components as those shown in Fig. 2 to Fig. 5 are denoted by the same reference numerals, and detailed description thereof will be omitted. Fig. 6(a) and Fig. 6(b) also show an XYZ coordinate system corresponding to the XYZ coordinate system shown in Fig. 2 to Fig. 5.

[0048] Fig. 6(a) shows a comparative example, and illustrates the case of a support base 130 in which, at a boundary portion 133a between a first member 131 and a second member 132 in the support base 130, the second member 132 protrudes more toward the radiation detection panel 120 than the first member 131. As shown in Fig. 6(a), when the second member 132 is more convex toward the radiation detection panel 120 than the first member 131, the radiation detection panel 120 may be damaged due to localized large deformation caused by the load K near the boundary portion 133a.

[0049] FIG. 6(b) shows the first embodiment, and illustrates the case of the support base 130 in which the first member 131 protrudes toward the radiation detection panel 120 more than the second member 132 at the boundary portion 133a between the first member 131 and the second member 132 in the support base 130. That is, FIG. 6(b) illustrates the case in which the first member 131 is more convex toward the radiation detection panel 120 than the second member 132. In the case shown in FIG. 6(b), even if the front cover 111 receives a load K, the foam constituting the first member 131 is compressed, so that the local deformation occurring near the boundary portion 133a of the radiation detection panel 120 can be mitigated. Therefore, in this embodiment, it is preferable to adopt a form in which the first member 131 protrudes toward the radiation detection panel 120 more than the second member 132 near the boundary portion 133a, as shown in FIG. 5 and FIG. 6(b).

[0050] Fig. 7 is a diagram showing an example of the internal configuration of the radiation imaging apparatus 100 according to the first embodiment in a cross section taken along line A-A' shown in Fig. 1(a). In Fig. 7, the same components as those shown in Figs. 2 to 6 are given the same reference numerals, and detailed description thereof will be omitted. Fig. 7 also shows an XYZ coordinate system corresponding to the XYZ coordinate system shown in Figs. 2 to 6.

[0051] 7 includes, in addition to the configuration of the radiation imaging apparatus 100 shown in FIG. 2, a bonding layer 170 for bonding the support base 130 and the radiation detection panel 120 between the support base 130 and the radiation detection panel 120. For example, PET (polyethylene terephthalate) is preferably used as the base material of the bonding layer 170. In this embodiment, the thickness of the bonding layer 170 in the thickness direction (Z direction) of the housing 110 is larger than the step 510 in FIG. 5, which indicates the size of the first member 131 protruding toward the radiation detection panel 120 side beyond the second member 132. In this way, by providing the bonding layer 170 having a thickness larger than the size of the step 510, it is possible to further reduce local deformation occurring near the boundary portion 133a of the radiation detection panel 120.

[0052] In the radiation imaging apparatus 100 according to the first embodiment described above, the support base 130 supporting the radiation detection panel 120 has the following configuration. The support base 130 has, in the thickness direction of the housing 110, a first region 210 having a first thickness and made of a first member 131 made of a foam, and a second region 220 having a second thickness smaller than the first thickness and made of a second member 132 having higher rigidity than a foam. According to this configuration, it is possible to prevent the housing 110 of the radiation imaging apparatus 100 from becoming thicker while ensuring the rigidity required for the support base 130 that supports the radiation detection panel 120.

[0053] Second embodiment Next, a second embodiment will be described. In the following description of the second embodiment, matters common to the first embodiment will be omitted, and only matters different from the first embodiment will be described.

[0054] Fig. 8 is a diagram showing a first configuration example of a radiation imaging apparatus 100 according to the second embodiment. In Fig. 8(a) and Fig. 8(b), the same components as those shown in Fig. 1 and Fig. 2 are denoted by the same reference numerals, and detailed description thereof will be omitted. Fig. 8(a) and Fig. 8(b) also show an XYZ coordinate system corresponding to the XYZ coordinate system shown in Fig. 1 and Fig. 2. Note that Fig. 8(a) omits the illustration of a fixing mechanism 160 for fixing an electric component 150 to a second member 132 of a support base 130 shown in Fig. 2.

[0055] Specifically, Fig. 8(a) is a diagram showing an example of the internal configuration in a YZ cross section of the radiation imaging apparatus 100 according to the first configuration example of the second embodiment. Also, Fig. 8(a) is a diagram showing an example of the internal configuration in an XY cross section of the radiation imaging apparatus 100 according to the first configuration example of the second embodiment, as viewed from the rear surface 102 side.

[0056] In the radiation imaging apparatus 100 according to the first configuration example of the second embodiment, as shown in FIG. 8(b), one of the multiple outer peripheral surfaces of the support base 130 is configured with the second member 132. Here, the outer peripheral surface of the support base 130 refers to a surface (a surface in the Z direction) that is approximately perpendicular to the incident surface 101 and the back surface 102 shown in FIG. 8(a). The radiation imaging apparatus 100 shown in FIG. 8(b) includes a buffer member 180 between the support base 130 and one side surface 103-1 of the multiple side surfaces 103-1 to 103-4 of the housing 110, the side surface 103-1 being on the side where the second member 132 is formed. Specifically, the buffer member 180 is disposed between the side surface 103-1 of the housing 110 and the second member 132 of the support base 130, and has a function of mitigating an impact received by the housing 110 (for example, the frame 113). More specifically, in the example shown in FIG. 8(b), the buffer member 180 is disposed in contact with the frame 113 having the side surface 103-1 of the housing 110 and the second member 132 of the support base .

[0057] Fig. 9 is a diagram showing a second configuration example of the radiation imaging apparatus 100 according to the second embodiment. In Fig. 9(a) and Fig. 9(b), the same components as those shown in Fig. 1, Fig. 2, and Fig. 8 are denoted by the same reference numerals, and detailed description thereof will be omitted. Fig. 9(a) and Fig. 9(b) also show an XYZ coordinate system corresponding to the XYZ coordinate system shown in Fig. 1, Fig. 2, and Fig. 8. Note that Fig. 9(a) omits the illustration of the fixing mechanism 160 for fixing the electric component 150 to the second member 132 of the support base 130 shown in Fig. 2.

[0058] Specifically, Fig. 9(a) is a diagram showing an example of the internal configuration in a YZ cross section of the radiation imaging apparatus 100 according to the second configuration example of the second embodiment. Also, Fig. 8(a) is a diagram showing an example of the internal configuration in an XY cross section of the radiation imaging apparatus 100 according to the second configuration example of the second embodiment, as viewed from the rear surface 102 side.

[0059] In the radiation imaging apparatus 100 according to the second configuration example of the second embodiment, as shown in Fig. 9(b), all of the outer circumferential surfaces of the support base 130 are formed of the second member 132. Here, the outer circumferential surface of the support base 130 refers to a surface (a surface in the Z direction) that is substantially perpendicular to the incident surface 101 and the back surface 102 shown in Fig. 9(a). That is, in the radiation imaging apparatus 100 according to the second configuration example of the second embodiment, the second member 132 is disposed along the outer periphery of the radiation detection panel 120 in the support base 130. The radiation imaging apparatus 100 shown in Fig. 9(b) includes a buffer member 180 between the support base 130 and all of the side surfaces 103-1 to 103-4 on the side where the second member 132 is formed, among the multiple side surfaces 103-1 to 103-4 of the housing 110. Specifically, the cushioning member 180 is disposed between the side surfaces 103-1 to 103-4 of the housing 110 and the second member 132 of the support base 130, and has the function of cushioning an impact received by the housing 110 (for example, the frame 113). More specifically, in the example shown in Fig. 9(b), the cushioning member 180 is disposed in contact with the frame 113 having the side surfaces 103-1 to 103-4 of the housing 110 and the second member 132 of the support base 130.

[0060] When the radiography apparatus 100 is carried, for example, if the frame 113 of the housing 110 receives an impact, the impact is transmitted to the support base 130, and the support base 130 and the radiation detection panel 120 may be damaged. Therefore, the outer peripheral surface of the support base 130 is required to have a structure that can withstand the impact received from the frame 113 of the housing 110. For example, when the outer peripheral surface of the support base 130 is configured with a first member 131 made of a foam having a relatively low rigidity, it is necessary to increase the thickness of the first member 131 to have a structure that can withstand the impact. On the other hand, when it is desired to install the electric component 150 near the outer periphery of the support base 130, it is difficult to ensure a sufficient thickness for the first member 131 made of a foam to withstand the impact. Therefore, in the second embodiment, by configuring the second member 132 at least near the outer periphery of the support base 130 on which the electric component 150 is installed, it is possible to achieve both sufficient durability against the impact received by the frame 113 of the support base 130 and thinning.

[0061] In this embodiment, the second member 132 of the support base 130 may be in direct contact with the frame 113 of the housing 110, or may be in contact with the frame 113 of the housing 110 via the buffer member 180. The buffer member 180 is desirably made of a material having a lower rigidity than the frame 113 of the housing 110 and the second member 132, and specifically, it is preferable that the buffer member 180 be made of a material such as an elastomer.

[0062] The second embodiment may be used in combination with the above-mentioned first embodiment.

[0063] In the second embodiment, similarly to the first embodiment described above, it is possible to prevent the thickness of the housing 110 of the radiation imaging apparatus 100 from increasing while ensuring the rigidity required for the support base 130 that supports the radiation detection panel 120.

[0064] It should be noted that the above-described embodiments of the present disclosure are merely illustrative examples of the implementation of the present disclosure, and the technical scope of the present disclosure should not be interpreted as being limited by these. In other words, the present disclosure can be implemented in various forms without departing from its technical concept or main features.

[0065] Embodiments of the present disclosure include the following configurations. [Configuration 1] a radiation detection panel for detecting incident radiation; A support base for supporting the radiation detection panel; a housing containing the radiation detection panel and the support base; Equipped with The support base is In a thickness direction of the housing, which is the incident direction of the radiation, there is a first region having a first thickness and made of a first member that is a foam, and a second region having a second thickness smaller than the first thickness and made of a second member that is more rigid than the foam. A radiation imaging apparatus comprising: [Configuration 2] The support base has a plurality of regions, at least one of the first region and the second region. 2. The radiation imaging apparatus according to claim 1, [Configuration 3] The support base has a plurality of the first regions and the second regions. 3. The radiation imaging apparatus according to configuration 2. [Configuration 4] The second member is one or more members other than the foam. 4. The radiation imaging apparatus according to any one of configurations 1 to 3. [Configuration 5] The second member is one or more members having a higher specific gravity than the foam. 5. The radiation imaging apparatus according to any one of configurations 1 to 4. [Configuration 6] The second member is a member including at least one material selected from the group consisting of magnesium alloy, aluminum alloy, CFRP, ABS, and polycarbonate. 6. The radiation imaging apparatus according to any one of configurations 1 to 5. [Configuration 7] the housing has a recess for holding the housing on a back surface opposite to an incidence surface on which the radiation is incident, In the support base, a region in a thickness direction of the housing where the recess is provided is the second region. 7. The radiation imaging apparatus according to any one of configurations 1 to 6. [Configuration 8] an electric component is further provided between the support base and a rear surface of the housing opposite to the incident surface on which the radiation is incident, In the support base, a region in a thickness direction of the housing where the electrical components are arranged is the second region. 8. The radiation imaging apparatus according to any one of configurations 1 to 7, [Configuration 9] The electrical components include a power supply component that supplies power to the radiation detection panel. 9. The radiation imaging apparatus according to configuration 8, [Configuration 10] The electrical component may further include a fixing mechanism for fixing the electrical component and the second member in the second region. 10. The radiation imaging apparatus according to configuration 8 or 9. [Configuration 11] A joint surface between the first member and the second member in the support base is approximately parallel to an incident surface of the housing on which the radiation is incident. 11. The radiation imaging apparatus according to any one of configurations 1 to 10. [Configuration 12] A buffer member is further provided between one or more side surfaces of the housing and the support base, The cushioning member is in contact with the one or more side surfaces and the second member of the support base. 12. The radiation imaging apparatus according to any one of configurations 1 to 11. [Configuration 13] The second member is disposed on the support base along an outer periphery of the radiation detection panel. 13. The radiation imaging apparatus according to any one of configurations 1 to 12. [Configuration 14] The support base is configured such that, at a boundary between the first member and the second member on a surface of the support base facing the radiation detection panel, the first member protrudes toward the radiation detection panel beyond the second member. 14. The radiation imaging apparatus according to any one of configurations 1 to 13. [Configuration 15] a bonding layer between the support base and the radiation detection panel for bonding the support base and the radiation detection panel; In a thickness direction of the housing, a thickness of the bonding layer is larger than a distance that the first member protrudes toward the radiation detection panel beyond the second member. 15. The radiation imaging apparatus according to claim 14, [Configuration 16] The first thickness of the first member gradually changes in a region including a boundary between the first member and the second member on the surface of the support base facing the radiation detection panel. 16. The radiation imaging apparatus according to any one of configurations 1 to 15. [Configuration 17] The first thickness of the first member gradually decreases in a direction from the first region toward the second region. 17. The radiation imaging apparatus according to claim 16, [Configuration 18] The radiation imaging apparatus according to any one of configurations 1 to 17, A radiation generating device that generates the radiation; A radiation imaging system comprising: [Explanation of symbols]

[0066] 10: Radiation imaging system, 100: Radiation imaging device, 101: Incident surface, 102: Rear surface, 103: Side surface, 110: Housing, 111: Front cover, 112: Rear cover, 113: Frame, 114: Indicator indicating the range of the effective imaging area, 115: Recess, 120: Radiation detection panel, 130: Support base, 131: First member, 132: Second member, 140: Impact absorbing sheet, 150: Electrical component, 160: Fixing mechanism, 161: Female screw structure, 162: Screw, 200: Radiation generating device, 201: Radiation, 210: First region, 220: Second region, H: Subject

Claims

1. a radiation detection panel for detecting incident radiation; A support base for supporting the radiation detection panel; a housing containing the radiation detection panel and the support base; Equipped with The support base has, in a thickness direction of the housing which is the incident direction of the radiation, a first region having a first thickness and made of a first member which is a foam, and a second region having a second thickness which is smaller than the first thickness and made of a second member which is more rigid than the foam. A radiation imaging apparatus comprising:

2. The support base has a plurality of regions, each of which is at least one of the first region and the second region.

2. The radiation imaging apparatus according to claim 1.

3. The support base has a plurality of the first regions and the second regions.

3. The radiation imaging apparatus according to claim 2.

4. The second member is one or more members other than the foam.

2. The radiation imaging apparatus according to claim 1.

5. The second member is one or more members having a higher specific gravity than the foam.

2. The radiation imaging apparatus according to claim 1.

6. The second member is a member including at least one material selected from the group consisting of magnesium alloy, aluminum alloy, CFRP, ABS, and polycarbonate.

2. The radiation imaging apparatus according to claim 1.

7. the housing has a recess for holding the housing on a back surface opposite to an incidence surface on which the radiation is incident, In the support base, a region in a thickness direction of the housing where the recess is provided is the second region.

2. The radiation imaging apparatus according to claim 1.

8. an electric component is further provided between the support base and a rear surface of the housing opposite to the incident surface on which the radiation is incident, The support base has a second region in a thickness direction of the housing, the second region being an area in which the electrical components are disposed.

2. The radiation imaging apparatus according to claim 1.

9. The electrical components include a power supply component that supplies power to the radiation detection panel.

9. The radiation imaging apparatus according to claim 8.

10. The electrical component may further include a fixing mechanism for fixing the electrical component and the second member in the second region.

9. The radiation imaging apparatus according to claim 8.

11. A joint surface between the first member and the second member in the support base is approximately parallel to an incident surface of the housing on which the radiation is incident.

2. The radiation imaging apparatus according to claim 1.

12. A buffer member is further provided between one or more side surfaces of the housing and the support base, The cushioning member is in contact with the one or more side surfaces and the second member of the support base.

2. The radiation imaging apparatus according to claim 1.

13. The second member is disposed on the support base along an outer periphery of the radiation detection panel.

2. The radiation imaging apparatus according to claim 1.

14. The support base is configured such that the first member protrudes toward the radiation detection panel more than the second member at a boundary between the first member and the second member on a surface of the support base facing the radiation detection panel.

2. The radiation imaging apparatus according to claim 1.

15. a bonding layer between the support base and the radiation detection panel for bonding the support base and the radiation detection panel; In a thickness direction of the housing, a thickness of the bonding layer is larger than a size of the first member protruding toward the radiation detection panel beyond the second member.

15. The radiation imaging apparatus according to claim 14.

16. The first thickness of the first member gradually changes in a region including a boundary portion between the first member and the second member on a surface of the support base facing the radiation detection panel.

2. The radiation imaging apparatus according to claim 1.

17. The first thickness of the first member gradually decreases in a direction from the first region toward the second region.

17. The radiation imaging apparatus according to claim 16.

18. A radiographic imaging apparatus according to any one of claims 1 to 17, A radiation generating device that generates the radiation; A radiation imaging system comprising:

Images