Radiographic device and radiographic system

Abstract

To provide a technique that reduces the weight of a support base that supports a radiation detection unit, and reduces the risk that the support base is damaged or deformed when it receives an impact from a side face of a housing.SOLUTION: A radiographic device comprises: a radiation detection unit 130 that detects incident radiation 201; a support base 140 that supports the radiation detection unit 130 and includes foamed material; a housing that includes the radiation detection unit 130 and the support base 140; and an abutting member 150 that is arranged between a side face 103-1 of the housing and the support base 140 when seen from an incident direction of the radiation 201. The abutting member 150 is a member having a larger specific gravity or modulus of elasticity than the foamed material included in the support base 140.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present disclosure relates to a radiography apparatus and a radiography system. [Background technology]

[0002] Common methods of radiography include the film / screen method and the CR method. In these methods, photosensitive film or a phosphor plate that accumulates an image as a latent image has been placed in a storage case called a film radiography device standardized by JIS Z 4905 (ISO4090) and used for radiography. Meanwhile, radiography devices using flat panel sensors with thin-film semiconductor material formed on an insulating substrate have become widespread, and digital radiography devices are used in medical image diagnosis for still image shooting and video shooting such as fluoroscopy.

[0003] With recent improvements in mounting technology, thin, lightweight, portable radiographic imaging devices have been commercialized to enable faster imaging of wider areas. As a result, radiographic imaging devices are increasingly being carried by technicians to hospital rooms, operating rooms, and other locations to perform imaging, in addition to the radiation rooms in which they are typically installed. Patent Document 1 discloses a radiographic imaging device in which a support base that supports a radiation detection unit (sensor) is made of a porous material (foam material) having voids, thereby reducing the weight of the support base. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7010135 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the radiography device described in Patent Document 1, no consideration is given to mitigating impact from the side of the housing when viewed from the direction of incidence of radiation. Therefore, in the radiography device described in Patent Document 1, when a localized impact is applied to the side of the housing due to, for example, the radiography device being dropped, it is expected that there is an increased risk of the support base (which may include a radiation detection unit (sensor)) contained in the housing being damaged or deformed.

[0006] The present disclosure has been made in consideration of these problems, and aims to provide technology that can reduce the risk of the support base being damaged or deformed when it receives an impact from the side of the housing, while reducing the weight of the support base that supports the radiation detection unit. [Means for solving the problem]

[0007] The radiographic imaging device disclosed herein comprises a radiation detection unit that detects incident radiation, a support base that supports the radiation detection unit and comprises a foam material, a housing that contains the radiation detection unit and the support base, and a butt member that is arranged between the support base and a side of the housing when viewed from the direction in which the radiation is incident, and the butt member is a member having a specific gravity or elastic modulus greater than that of the foam material. Effect of the Invention

[0008] According to the present disclosure, it is possible to reduce the weight of the support base that supports the radiation detection unit, while reducing the risk of the support base being damaged or deformed when it receives an impact from the side of the housing. [Brief description of the drawings]

[0009] [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 radiographic imaging apparatus according to a first embodiment. [Diagram 3]3 is a plan view of the radiation imaging apparatus according to the first embodiment, seen from the rear side, with the rear cover and rear frame shown in FIG. 2 removed. [Figure 4] FIG. 1(a) is a diagram showing an example of an internal configuration of a radiographic apparatus according to a second embodiment, taken along line AA in FIG. [Diagram 5] FIG. 1(a) is a diagram showing an example of an internal configuration of a cross section taken along line AA in FIG. 1(a) in a radiographic imaging apparatus according to a third embodiment. [Figure 6] 6 is a plan view of the radiation imaging apparatus according to the third embodiment, seen from the rear side, with the rear cover and rear frame shown in FIG. 5 removed. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, the mode (embodiment) for carrying out the present disclosure will be described with reference to the drawings. However, the details of the structure shown in each embodiment are not limited to those described in this specification or shown in the drawings. In addition, in this specification, radiation includes not only X-rays, but also α-rays, β-rays, γ-rays, particle rays, cosmic rays, and the like.

[0011] (First embodiment) First, the first embodiment will be described.

[0012] 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.

[0013] As shown in FIG. 1( a ), a radiation imaging system 10 includes a radiation imaging apparatus 100 and a radiation generating apparatus 200 .

[0014] The radiation generating device 200 is a device that irradiates the subject H and the radiation imaging device 100 with radiation 201 .

[0015] 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.

[0016] 1(a) illustrates an incident surface 101, which is a surface on which radiation 201 is incident, a back surface 102 located on the opposite side to the incident surface 101 (located opposite to the incident surface 101), and a side surface 103 when viewed from the incident direction of the radiation 201 in a radiographic imaging device 100. The radiographic imaging device 100 includes a housing 110 as an exterior. The housing 110 of the radiographic imaging device 100 includes a front cover 111 having the incident surface 101, a rear cover 112 having the back 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. In this embodiment, the members constituting the housing 110 may be integrated or may be composed of a plurality of members.

[0017] 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.

[0018] Fig. 1(b) illustrates an XYZ coordinate system corresponding to the XYZ coordinate system illustrated in Fig. 1(a). A rear cover 112 having a rear surface 102 illustrated in Fig. 1(b) is provided with a plurality of recesses 112a for a user such as an engineer to easily hold the housing 110. The recesses 112a are preferably provided in the vicinity of each side surface 103 of the frame 113, and are preferably formed deeper and over a wider area in consideration of the arrangement of the components inside the housing 110. A battery 120 is also arranged on the side of the rear cover 112 having the rear surface 102 illustrated in Fig. 1(b).

[0019] FIG. 2 is a diagram showing an example of the internal configuration of the radiographic imaging apparatus 100 according to the first embodiment in a cross section taken along the line AA shown in FIG. 1(a). In FIG. 2, the same components as those shown in FIG. 1 are denoted by 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 the line AA shown in FIG. 1(a) is a line along the X direction, FIG. 2 is a diagram showing an example of the internal configuration of the radiographic imaging apparatus 100 in a cross section taken along the X direction. In the following description, the radiographic imaging apparatus 100 according to the first embodiment shown in FIG. 2 will be referred to as "radiographic imaging apparatus 100-1."

[0020] The radiation imaging apparatus 100-1 shown in Fig. 2 has the following configuration in addition to the housing 110 and battery 120 shown in Fig. 1. The radiation imaging apparatus 100-1 includes a radiation detection unit 130, a support base 140, abutment members 150, wiring members 160, electric components 170, and a spacer layer 180, all of which are enclosed in the housing 110. Furthermore, the radiation imaging apparatus 100-1 includes a battery holder 121 for holding a battery 120 that serves as a power source, and the battery holder 121 allows the battery 120 to be attached to and detached from the radiation imaging apparatus 100-1.

[0021] As described above, the housing 110 includes the front cover 111 having the incident surface 101, the rear cover 112 having the rear surface 102, and the frame 113 having the side surface 103. The front cover 111 is preferably made of, for example, a material that easily transmits the radiation 201 and is lightweight and highly rigid carbon fiber reinforced resin. The rear cover 112 is preferably made of, for example, a metal material such as an aluminum alloy or magnesium alloy that is lightweight and highly rigid, or a resin material such as carbon fiber reinforced resin. The frame 113 is preferably made of, for example, a metal material such as an aluminum alloy or magnesium alloy that is lightweight and highly rigid, or a resin material such as carbon fiber reinforced resin. The frame 113 is made of, for example, a front frame 1131 to which the front cover 111 is fixed and a rear frame 1132 to which the rear cover 112 is fixed, and is made of a fastening member 1133 that joins the front frame 1131 and the rear frame 1132. In this embodiment, the fastening member 1133 is arranged around the entire circumference of the frame 113. When it is necessary to separate the housing 110 from the internal unit therein for replacement of the housing 110 or the like, the internal unit can be removed by removing the fastening member 1133 and separating the front frame 1131 and the rear frame 1132. As the fastening member 1133, a fastening member such as a screw is suitable.

[0022] Between the front cover 111 and the front frame 1131, they are fixed by, for example, a bonding layer (not shown). At this time, if an adhesive is used as the bonding layer, it is not necessary to thicken the front cover 111 and the light weight is not impaired. Further, when an adhesive is used as the bonding layer, for example, unlike the case of screw fastening, the fastening member does not expose on the appearance surface, so the appearance and cleanability are good, and high airtightness and watertightness can be realized. Further, in order to increase the adhesive strength between the adhesive layer and the adherends, namely the front cover 111 and the front frame 1131, by roughening the surface of the adherend, the improvement of the adhesive strength due to the anchor effect is realized, the risk of peeling of the adhesive is reduced, and a highly reliable joining is possible. Note that in the present embodiment, the bonding layer is not limited to applying an adhesive, and for example, an adhesive such as a tape may be employed. In the above description, the joining of the front cover 111 and the front frame 1131 has been described, but the joining of the rear cover 112 and the rear frame 1132 is the same. In this case, it is not always necessary to adopt the same bonding layer between the front cover 111 and the front frame 1131 and the bonding layer between the rear cover 112 and the rear frame 1132.

[0023] The battery 120 is detachably held with respect to the radiation imaging apparatus 100-1 by a battery holder 121. The battery holder 121 is attached to, for example, the rear cover 112, and the battery 120 can be detached from the side of the rear surface 102 of the radiation imaging apparatus 100-1. Further, for example, the rear cover 112 may have an opening, and the battery holder 121 may be attached to the support base 140 through the opening. When the battery 120 is mounted on the battery holder 121, the power of the battery 120 is supplied to each component of the radiation imaging apparatus 100-1 such as the radiation detection unit 130 (specifically, the sensor 132) and the electrical component 170. Then, each component of the radiation imaging apparatus 100-1 operates by the power supplied from the battery 120. The battery 120 is a secondary battery, and a capacitor may be adopted.

[0024] The radiation detection unit 130 detects the incident radiation 201 (including the incident radiation 201 transmitted through the subject H shown in FIG. 1(a)) as an image signal related to radiation image data. The radiation detection unit 130 includes a scintillator layer (phosphor layer) 131 that converts the incident radiation 201 into visible light, and a sensor 132 that converts the visible light generated in the scintillator layer 131 into an image signal related to radiation image data. For example, a flat panel detector is applied to the sensor 132, and includes a substrate and photoelectric conversion elements arranged two-dimensionally on the surface of the substrate. The scintillator layer 131 is disposed on the side of the incident surface 101 of the sensor 132, and emits light when the radiation 201 is incident thereon to convert it into visible light. The photoelectric conversion elements of the sensor 132 detect the visible light generated in the scintillator layer 131 and convert it into an electric signal (image signal). This makes it possible to obtain radiation image data. The material of the phosphor layer laminated as the scintillator layer 131 is, for example, CsI or GOS (Gd 2 O 2 S) is used.

[0025] The support base 140 is a base that supports the radiation detection unit 130 from the rear surface 102 side. For example, the sensor 132 of the radiation detection unit 130 and the support base 140 can be arranged inside the housing 110 as an internal unit that is joined together via an adhesive layer (not shown) such as double-sided tape arranged on the incident surface 101 side of the support base 140. Note that the sensor 132 of the radiation detection unit 130 and the support base 140 may be joined by other joining means such as adhesion by adhesive instead of double-sided tape. The support base 140 is configured to include a foam material that is a low specific gravity (low elastic modulus) material in order to reduce weight. Note that the support base 140 may further include a lightweight and high rigidity material such as a magnesium alloy or a carbon fiber reinforced resin in addition to the above-mentioned foam material. Examples of the foam material included in the support base 140 include polyphenylene ether (PPE), polypropylene (PP), polystyrene (PS), and polyethylene (PE), but not only one type of material but also multiple types of materials may be used. In addition, the foam material included in the support base 140 is preferably about 2 to 10 times the volume ratio of the original material in consideration of the required rigidity and moldability. Furthermore, the foam material included in the support base 140 does not need to have a uniform foaming ratio over the entire support base 140, and may have a partially different foaming ratio depending on the rigidity and dimensional requirements required for the support base 140 depending on the internal unit to be placed. In addition, the thickness of the support base 140 shown in FIG. 2 is such that the side where the wiring member 160 and the electric component 170 are placed is a thin side 141a, and the side where the wiring member 160 and the electric component 170 are not placed is a thick side 141c that is thicker than the thin side 141a.

[0026] The abutting member 150 is a member disposed between the side surface 103 (specifically, the side surface 103-1) of the housing 110 when viewed from the incident direction (Z direction) of the radiation 201 and the outer edge of the support base 140. The abutting member 150 in this embodiment is a member having a higher specific gravity or elastic modulus (including the case where both the specific gravity and the elastic modulus are higher) than the foam material provided in the support base 140. In the example shown in FIG. 2, the abutting member 150 is fixed to the side of the support base 140 that supports the radiation detection unit 130 (the side of the incident surface 101) opposite to the side of the support base 140 that supports the radiation detection unit 130 (the side of the back surface 102). In the example shown in FIG. 2, the abutting member 150 is fixed to a wide surface on the side of the back surface 102 of the support base 140, thereby enabling stress relaxation during impact. Note that in this embodiment, the abutting member 150 may be fixed to the side of the support base 140 that supports the radiation detection unit 130 (the side of the incident surface 101). That is, in this embodiment, the abutting member 150 is fixed to at least one of the side of the support base 140 that supports the radiation detection unit 130 (the side of the incident surface 101) and the side opposite to the supporting side (the side of the back surface 102). The abutting member 150 shown in FIG. 2 has a protrusion 151 that protrudes in a direction toward the side surface 103-1 of the housing 110. The abutting member 150 is disposed on the side surface 103-1 of the multiple side surfaces 103 of the housing 110, where the thickness of the support base 140 in the incident direction (Z direction) of the radiation 201 is smaller than that of the other side surface 103-3. That is, the abutting member 150 is disposed on the side of the thin side 141a of the support base 140 where the thickness of the support base 140 is smaller than that of the thick side surface 141c. Furthermore, the abutting member 150 is disposed on the side of the side surface 103-1 of the housing 110 on which the wiring member 160 electrically connected to the radiation detection unit 130 (specifically, the sensor 132 of the radiation detection unit 130) is disposed. The abutting member 150 is preferably formed containing a lightweight and highly rigid metal material such as an aluminum alloy or a magnesium alloy. Note that the abutting member 150 may be formed further containing a resin material in addition to the above-mentioned metal material.

[0027] The wiring member 160 is a flexible cable that is arranged on at least one side surface 103-1 of the multiple side surfaces 103 of the housing 110 and is electrically connected to the radiation detection unit 130 (specifically, the sensor 132) and the electrical components 170, etc.

[0028] The electrical component 170 is attached to the support base 140 on a side opposite to the bonding surface of the sensor 132. The electrical component 170 reads out an electrical signal (an image signal related to radiation image data) from the sensor 132 of the radiation detection unit 130 via the wiring member 160, and processes the electrical signal to generate radiation image data. The generated radiation image data is transmitted to an external display system (not shown) and displayed. The method of communication with this external display system may be either wired communication or wireless communication, and in the case of wireless communication, the 2.4 GHz band or 5 GHz band is mainly used. By these communication methods, the radiation image data is transferred to a PC, tablet, or the like, and the radiation image data is confirmed by each user.

[0029] The spacer layer 180 is a layer disposed between the front cover 111 of the housing 110 and the sensor 132 of the radiation detection unit 130 .

[0030] Fig. 3 is a plan view of the radiation imaging apparatus 100 according to the first embodiment, seen from the rear surface 102 side, with the rear cover 112 and rear frame 1132 shown in Fig. 2 removed. In Fig. 3, 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. 3 also illustrates an XYZ coordinate system corresponding to the XYZ coordinate system shown in Fig. 1 and Fig. 2.

[0031] In the example shown in FIG. 3, the abutting member 150 is disposed on the side of one side 141a (corresponding to the thin side 141a shown in FIG. 2) of the four sides 141a to 141d that form the outer edge of the support base 140. Also, in FIG. 3, side surfaces 103-1 to 103-4 of the housing 110 that correspond to the four sides 141a to 141d that form the outer edge of the support base 140 are illustrated. Note that in this embodiment, the abutting member 150 may be disposed on all sides of the four sides 141a to 141d that form the outer edge of the support base 140, or may be disposed on a side of the support base 140 that is thin and has low rigidity. Among these, in the case where the abutting member 150 is disposed on a side of the support base 140 that is thin and has low rigidity, it is possible to ensure rigidity without impairing the overall light weight of the radiation imaging apparatus 100-1. The abutting member 150 may be configured as a single part arranged over at least one of the four sides 141a to 141d that form the outer edge of the support base 140, or may be configured with a plurality of parts arranged discretely. The abutting member 150 may be configured as a single part arranged over at least two adjacent sides of the four sides 141a to 141d that form the outer edge of the support base 140.

[0032] 2, for example, on the side of the thin side 141a of the support base 140 where the wiring member 160 for reading out the electrical signal from the sensor 132 is disposed, it is necessary to dispose the electrical component 170 on the rear surface 102 side of the support base 140, and this makes it necessary to make the support base 140 thin. In this case, the support base 140 is reinforced by providing an abutment member 150 on the thin side 141a of the support base 140. On the other hand, on the thick side 141c of the support base 140 where there is no thickness restriction, the support base 140 is made thick to ensure rigidity, and weight reduction is achieved without disposing the abutment member 150.

[0033] 2, when the abutting member 150 is disposed on the side of the thin side 141a of the support base 140 on which the wiring member 160 is disposed, the internal unit inside the housing 110 moves inside the housing due to an impact such as a drop of the housing 110. In this case, the wiring member 160 is pinched between the abutting member 150 and the housing 110 (specifically, the side surface 103-1 of the housing 110), and there is a risk of the wiring member 160 being broken or damaged. Therefore, in order to prevent the wiring member 160 from being pinched even if the internal unit moves inside the housing 110, the abutting member 150 may have a partial convex portion 151 so that the abutting member 150 and the housing 110 come into contact with each other in an area where the wiring member 160 is not disposed, as shown in FIG. 3. Alternatively, the side of the housing 110 may have a convex portion on the inside.

[0034] The position of the support base 140 within the housing 110 is restricted while it is integrated with the radiation detection unit 130 and the like. For this reason, with respect to the incident direction (Z direction) of the radiation 201, the spacer layer 180 is disposed on the side of the incident surface 101 of the radiation detection unit 130, and the ribs and spacers of the support base 140 are disposed on the side of the back surface 102 of the support base 140. This makes it possible to abut the internal unit inside the housing 110 against the inside of the housing 110.

[0035] In addition, in the XY plane direction perpendicular to the incident direction (Z direction) of the radiation 201, if the support base 140 receives an impact from the side surface 103 of the housing 110 without the abutment member 150, there is a risk that the support base 140 will be significantly deformed and broken because the material of the support base 140 also has a low elastic modulus. In particular, if the thickness is small, such as the thin-walled side 141a of the support base 140 shown in FIG. 2, there is a risk that the support base 140 will be significantly deformed and broken. In this regard, in this embodiment, the abutment member 150 is disposed between the support base 140 and the side surface 103 of the housing 110, so that the outer edge of the support base 140 is reinforced, and it is possible to provide a radiographic imaging apparatus 100-1 that has high resistance to impact even when it receives an impact from the side surface 103. According to the radiographic imaging apparatus 100-1 according to the first embodiment, the weight is reduced by the support base 140 including a foam material, and the abutment member 150 is disposed to reduce the risk that the support base 140 will be damaged or deformed when it receives an impact from the side surface 103 of the housing 110.

[0036] 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.

[0037] The schematic configuration of the radiation imaging system according to the second embodiment is similar to the schematic configuration of the radiation imaging system 10 according to the first embodiment shown in FIG.

[0038] Fig. 4 is a diagram showing an example of the internal configuration of a radiographic imaging apparatus 100 according to the second embodiment in a cross section taken along line AA shown in Fig. 1(a). In Fig. 4, the same components as those shown in Figs. 1 to 3 are given 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. 1(a). In the following description, the radiographic imaging apparatus 100 according to the second embodiment shown in Fig. 4 will be referred to as "radiographic imaging apparatus 100-2".

[0039] In the radiation imaging apparatus 100-1 according to the first embodiment described above, the abutting member 150 is fixed to the support base 140. According to the radiation imaging apparatus 100-1 according to the first embodiment described above, the outer edge of the support base 140 is reinforced, and it is expected that the resistance to impacts such as being dropped will be improved. However, in the radiation imaging apparatus 100-1 according to the first embodiment, the support base 140 is basically free inside the housing 110, and therefore, when an impact such as being dropped occurs, the support base 140 may move inside the housing 110 due to inertial force and come into contact with an inner wall of the housing 110, resulting in damage.

[0040] In contrast, the radiation imaging apparatus 100-2 according to the second embodiment further includes a locking member 191 for fixing the support base 140 to the housing 110 (rear frame 1132) and a locking member 192 for fixing the abutment member 150 to the housing 110 (rear frame 1132). Here, it is preferable to use, for example, screws as the locking members 191 and 192. In this case, for example, a female screw is formed in the support base 140 or the abutment member 150, and the rear frame 1132 and the support base 140 are integrated by fastening the screws as the locking members 191 and 192 to the female screw from the rear surface 102 side of the rear frame 1132. In addition, the locking destination to the support base 140 is not limited to the rear frame 1132 shown in FIG. 4, and may be other components of the housing 110 such as the rear cover 112. In addition, the locking members 191 and 192 are not limited to the above-mentioned screws, and may be fixed by, for example, an adhesive or a pressure-sensitive adhesive.

[0041] Also in this embodiment, it is preferable that the abutting member 150 is configured to include a protrusion 151. This is because, although the relative position is regulated by integrating the housing 110 and the support base 140, there is a risk that the housing 110 itself will be deformed if an impact is applied to the side surface 103 of the housing 110 due to an impact such as a drop. Also, this is to prevent the wiring member 160 from being pinched between the abutting member 150 and the housing 110, which would cause the wiring member 160 to break, as in the first embodiment described above.

[0042] As described above, the radiation imaging apparatus 100-2 according to the second embodiment further includes locking members 191 and 192 that respectively fix the support base 140 and the abutment member 150 to the housing 110. With this configuration, even if the support base 140 is subjected to an impact such as a drop, it is possible to suppress the support base 140 from moving inside the housing 110, and to prevent the support base 140 from contacting the inner wall of the housing 110, thereby reducing the risk of the support base 140 being damaged.

[0043] (Third embodiment) Next, a third embodiment will be described. In the following description of the third embodiment, the description of the matters common to the first and second embodiments will be omitted, and only the matters different from the first and second embodiments will be described.

[0044] The schematic configuration of the radiation imaging system according to the third embodiment is similar to the schematic configuration of the radiation imaging system 10 according to the first embodiment shown in FIG.

[0045] Fig. 5 is a diagram showing an example of the internal configuration of a radiographic imaging apparatus 100 according to the third embodiment in a cross section taken along line AA shown in Fig. 1(a). In Fig. 5, the same components as those shown in Figs. 1 to 4 are given 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. 1(a). In the following description, the radiographic imaging apparatus 100 according to the third embodiment shown in Fig. 5 will be referred to as "radiographic imaging apparatus 100-3".

[0046] In the first and second embodiments described above, the abutting member 150 is fixed to the outer edge of the support base 140. In contrast, the radiation imaging apparatus 100-3 according to the third embodiment further includes a buffer member 193 between the abutting member 150 and the side surface 103-1 of the housing 110. By providing this buffer member 193, when the side surface 103-1 of the housing 110 receives an impact from the outside, the buffer member 193 absorbs the energy of the impact, thereby further improving the impact resistance.

[0047] The buffer member 193 is preferably formed including an elastomeric material such as urethane or ester, and is preferably a member with a low specific gravity and a low elastic modulus such as a cushioning material.

[0048] In the present embodiment, assuming that the elastic modulus of the support base 140 is E1, the elastic modulus of the abutting member 150 is E2, and the elastic modulus of the buffer member 193 is E3, it is preferable that the relationship E1 < E3 < E2 holds. Further, in the present embodiment, assuming that the specific gravity of the support base 140 is S1, the specific gravity of the abutting member 150 is S2, and the specific gravity of the buffer member 193 is S3, it is more preferable that the relationship S1 < S3 < S2 holds. In the present embodiment, when the housing 110 receives an impact from the outside, the buffer member 193 plastically deforms earlier than the support base 140. Thereby, when receiving an impact such as a drop, the buffer member 193 greatly deforms to absorb the energy of the impact, and it becomes possible to mitigate the impact transmitted to the support base 140 and the abutting member 150. Further, even if the housing 110 receives a large impact from the outside, the risk that the support base 140 and the abutting member 150 plastically deform can be reduced because the buffer member 193 plastically deforms first. Further, even when plastic deformation occurs in the buffer member 193, since the buffer member 193 is not integrated with the support base 140 or the abutting member 150, it is possible to replace only the buffer member 193.

[0049] FIG. 6 is a plan view seen from the side of the back surface 102 with the rear cover 112 and the rear frame 1132 shown in FIG. 5 removed in the radiographic apparatus 100 according to the third embodiment. In this FIG. 6, the same components as those shown in FIGS. 1 to 5 are denoted by the same reference numerals, and detailed descriptions thereof are omitted. Further, FIG. 6 shows an XYZ coordinate system corresponding to the XYZ coordinate system shown in FIGS. 1 to 5.

[0050] The abutting member 150 of the radiation imaging apparatus 100-3 according to the third embodiment does not necessarily have to be provided with the convex portion 151 provided on the abutting member 150 of the radiation imaging apparatus 100 according to the first and second embodiments described above. In the radiation imaging apparatus 100-3 according to the third embodiment, as shown in Fig. 6, by arranging a buffer member 193 in an area where the wiring member 160 is not arranged, a function similar to that of the convex portion 151 in the first and second embodiments can be expected. That is, when the housing 110 receives an impact from the outside, such as a fall, and the internal unit moves within the housing 110, the abutting member 150 and the buffer member 193, and the buffer member 193 and the housing 110 come into contact with each other, thereby making it possible to prevent the wiring member 160 from being pinched.

[0051] As described above, the radiation imaging apparatus 100-3 according to the third embodiment further includes the buffer member 193 between the abutment member 150 and the side surface 103 of the housing 110. With this configuration, even when an impact such as a drop occurs, the buffer member 193 deforms to absorb the energy of the impact, thereby suppressing damage and deformation of the support base 140, and thus making it possible to provide a radiation imaging apparatus 100-3 having high resistance to impact.

[0052] 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.

[0053] Embodiments of the present disclosure include the following configurations. [Configuration 1] a radiation detection unit that detects incident radiation; a support base supporting the radiation detection unit and including a foam material; a housing containing the radiation detection unit and the support base; a stopper member disposed between the support base and a side surface of the housing when viewed from the incident direction of the radiation; having The abutting member is a member having a specific gravity or elastic modulus greater than that of the foam material. A radiation imaging apparatus comprising: [Configuration 2] The abutment member is fixed to at least one of a side of the support base that supports the radiation detection unit and a side opposite to the supporting side. 2. The radiation imaging apparatus according to claim 1, [Configuration 3] The abutment member has a protrusion that protrudes in a direction toward a side surface of the housing. 3. The radiation imaging apparatus according to configuration 1 or 2. [Configuration 4] The abutment member is disposed on one of the side surfaces of the housing, the side surface having a smaller thickness of the support base in the incident direction of the radiation than the other side surfaces. 4. The radiation imaging apparatus according to any one of configurations 1 to 3. [Configuration 5] a wiring member disposed on at least one of the side surfaces of the housing and electrically connected to the radiation detection unit; The abutting member is disposed on the side of the housing on which the wiring member is disposed. 5. The radiation imaging apparatus according to any one of configurations 1 to 4. [Configuration 6] The wiring member is electrically connected to an electric component, The electrical component reads out an electrical signal from the radiation detection unit via the wiring member. 6. The radiation imaging apparatus according to configuration 5, [Configuration 7] The abutting member is formed to include a metal. 7. The radiation imaging apparatus according to any one of configurations 1 to 6. [Configuration 8] The housing further includes a cushioning member disposed between the abutment member and a side surface of the housing. 8. The radiation imaging apparatus according to any one of configurations 1 to 7, [Configuration 9] When the housing receives an external impact, the buffer member undergoes plastic deformation before the support base does. 9. The radiation imaging apparatus according to configuration 8, [Configuration 10] If the specific gravity of the support base is S1, the specific gravity of the abutting member is S2, and the specific gravity of the cushioning member is S3, then S1 <S3<S2である 10. The radiation imaging apparatus according to configuration 8 or 9. [Configuration 11] If the elastic modulus of the support base is E1, the elastic modulus of the abutting member is E2, and the elastic modulus of the cushioning member is E3, then E1 <E3<E2である 11. The radiation imaging apparatus according to any one of configurations 8 to 10. [Configuration 12] The cushioning member is formed to include an elastomer. 12. The radiation imaging apparatus according to any one of configurations 8 to 11. [Configuration 13] The support base and the abutment member are further provided with a locking member for fixing the support base and the abutment member to the housing. 13. The radiation imaging apparatus according to any one of configurations 1 to 12. [Configuration 14] A radiation imaging apparatus according to any one of configurations 1 to 13, A radiation generating device that generates the radiation; A radiation imaging system comprising: [Explanation of symbols]

[0054] 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, 112a: recess, 113: frame, 1131: front frame, 1132: rear frame, 1133: fastening member, 120: battery, 121: battery holder, 130: radiation detection unit, 131: scintillator layer (phosphor layer), 132: sensor, 140: support base, 150: abutment member, 151: protrusion, 160: wiring member, 170: electrical component, 180: spacer layer, 191, 192: locking member, 193: cushioning member, 200: radiation generating device, 201: radiation, H: subject

Claims

1. a radiation detection unit that detects incident radiation; a support base supporting the radiation detection unit and including a foam material; a housing containing the radiation detection unit and the support base; a stopper member disposed between the support base and a side surface of the housing when viewed from the incident direction of the radiation; having The abutting member is a member having a specific gravity or elastic modulus greater than that of the foam material. A radiation imaging apparatus comprising:

2. The abutment member is fixed to at least one of a side of the support base that supports the radiation detection unit and a side opposite to the supporting side.

2. The radiation imaging apparatus according to claim 1.

3. The abutment member has a protrusion that protrudes in a direction toward a side surface of the housing.

2. The radiation imaging apparatus according to claim 1.

4. The abutment member is disposed on one of the side surfaces of the housing, the side surface having a smaller thickness of the support base in the incident direction of the radiation than the other side surfaces.

2. The radiation imaging apparatus according to claim 1.

5. a wiring member disposed on at least one of the side surfaces of the housing and electrically connected to the radiation detection unit, The abutting member is disposed on the side of the housing on which the wiring member is disposed.

2. The radiation imaging apparatus according to claim 1.

6. The wiring member is electrically connected to an electric component, The electrical component reads out an electrical signal from the radiation detection unit via the wiring member.

6. The radiation imaging apparatus according to claim 5.

7. The abutting member is formed to include a metal.

2. The radiation imaging apparatus according to claim 1.

8. The housing further includes a cushioning member disposed between the abutment member and a side surface of the housing.

2. The radiation imaging apparatus according to claim 1.

9. When the housing receives an external impact, the buffer member undergoes plastic deformation before the support base does.

9. The radiation imaging apparatus according to claim 8.

10. If the specific gravity of the support base is S1, the specific gravity of the abutting member is S2, and the specific gravity of the buffer member is S3, then S1<S3<S2.

9. The radiation imaging apparatus according to claim 8.

11. If the elastic modulus of the support base is E1, the elastic modulus of the abutting member is E2, and the elastic modulus of the cushioning member is E3, then E1<E3<E2.

9. The radiation imaging apparatus according to claim 8.

12. The cushioning member is formed to include an elastomer.

9. The radiation imaging apparatus according to claim 8.

13. The support base and the abutment member are further provided with a locking member for fixing the support base and the abutment member to the housing.

2. The radiation imaging apparatus according to claim 1.

14. A radiographic imaging apparatus according to any one of claims 1 to 13, A radiation generating device that generates the radiation; A radiation imaging system comprising:

Images