Radiation image photographing device

Abstract

To suppress occurrence of image irregularities and prevent damage to a radiation detection section.SOLUTION: A radiation image photographing device 100 comprises: an internal module 120 including a casing 110 having an irradiation part (front part 11) irradiated with radiations, a radiation detection section 3 for detecting the radiations, and a metal holding pedestal 4 for holding the radiation detection section 3; and a separation assisting member 9 that has a lower bending stiffness than the internal module 120 and is arranged between the internal module 120 and the irradiation part. The radiation detection section 3 includes: a scintillator 33; a light detection section having a light reception surface (surface 31a) in which a light receiving element (photoelectric conversion element 31f) and a wire (signal line 31c) for reading an electric signal from the light receiving element are formed; and a support (element board 31a) for supporting the light detection section. The separation assisting member 9 is provided on an entire surface in the irradiation part side of the internal module 120, and is separably fixed to an inner surface of the irradiation part by an adhesive member (second adhesive member 7).SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a radiographic imaging device. [Background technology]

[0002] In recent years, portable (also called cassette type) radiographic imaging devices that can be separated from an imaging stand and carried around have been developed and put into practical use. Because of their panel shape, these radiographic imaging devices are sometimes called FPDs (Flat Panel Detectors).

[0003] The FPD includes an internal module that includes a radiation detection unit that detects radiation and a support base that holds the radiation detection unit. The internal module is attached to the housing of the FPD. When the internal module or the housing of an FPD is made replaceable, the FPD is provided with a separation assisting member for separating the internal module from the housing (for example, Patent Documents 1 and 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-129074 [Patent Document 2] Patent No. 5647581 Summary of the Invention [Problem to be solved by the invention]

[0005] The peeling aid member may be provided at a position in the front-to-rear direction of the FPD that overlaps with a portion of the radiation detection unit for the following reason. The position that overlaps with a portion of the radiation detection unit is, for example, the effective image area of ​​the radiation detection unit (the area that appears in the captured image). The reason for this is that, to prevent the peeling aid member from being pulled out of the radiation detection unit when the internal module and the housing are peeled off, an adhesive area is required between the layers of the peeling aid member and the radiation detection unit to provide sufficient shear adhesive strength. The adhesive area is determined by the adhesive strength of the interface to be peeled off and the adhesive strength of the adhesive material used in the peeling aid member. When the peeling assist member is provided at a position overlapping with a portion of the radiation detection unit in the front-to-rear direction of the FPD, and when the holding base is made of metal to maintain the rigidity of the FPD, the following problem may occur. Specifically, when a load is applied to the front part of the FPD housing, the peeling assist member causes the radiation detection unit to locally bend, but the metal holding base is too rigid to absorb the bending of the radiation detection unit. As a result, local steps are created in the radiation detection unit due to the bending, causing distortion (image unevenness) in the image generated by the FPD. Repeated local bending in the radiation detection unit may damage the radiation detection unit.

[0006] The present invention has been made in view of the above-mentioned problems, and has an object to provide a radiographic imaging device that can suppress the occurrence of image unevenness and prevent damage to a radiation detection unit. [Means for solving the problem]

[0007] In order to solve the above problem, the radiographic imaging device of the invention described in claim 1 comprises: a housing having an irradiation portion to be irradiated with radiation; an internal module including a radiation detection unit that detects radiation and a metal holding base that holds the radiation detection unit; a peeling assist member having a bending rigidity lower than that of the internal module and disposed between the internal module and the irradiation site; Equipped with the radiation detection unit includes a scintillator, a light detection unit having a light receiving surface on which a light receiving element and wiring for reading out an electrical signal from the light receiving element are formed, and a support body for supporting the light detection unit, The peeling aid member is provided on the entire surface of the inner module on the side of the irradiation area, and is removably fixed to the inner surface of the irradiation area by an adhesive member.

[0008] The radiographic imaging device of the invention described in claim 2 is a housing having an irradiation portion to be irradiated with radiation; an internal module including a radiation detection unit that is removably fixed to the inner surface of the irradiation site by an adhesive member and detects radiation, and a metal holding base that holds the radiation detection unit; a peeling assist member disposed between the internal module and the irradiation portion; Equipped with the radiation detection unit includes a scintillator, a light detection unit having a light receiving surface on which a light receiving element and wiring for reading out an electrical signal from the light receiving element are formed, and a support body for supporting the light detection unit, the peeling assisting member is provided on a part of a surface of the internal module on the side of the irradiation portion, The thickness of the peeling aid member is thinner than the thickness of the adhesive member.

[0009] The radiation imaging device of the invention described in claim 3 comprises: a housing having an irradiation portion to be irradiated with radiation; an internal module including a radiation detection unit that is removably fixed to the inner surface of the irradiation site by an adhesive member and detects radiation, and a metal holding base that holds the radiation detection unit; a peeling assist member disposed between the internal module and the irradiation portion; Equipped with the radiation detection unit includes a scintillator, a photodetector having a light-receiving surface on which a light-receiving element and wiring for reading out an electrical signal from the light-receiving element are formed, and a glass support body for supporting the photodetector, the peeling assisting member is provided on a part of a surface of the internal module on the side of the irradiation portion, The thickness of the peeling aid member is less than half the thickness of the support.

[0010] The radiographic imaging device of the invention described in claim 4 is a housing having an irradiation portion to be irradiated with radiation; an internal module including a radiation detection unit that is removably fixed to the inner surface of the irradiation site by an adhesive member and detects radiation, and a metal holding base that holds the radiation detection unit; a peeling assist member disposed between the internal module and the irradiation portion; Equipped with the radiation detection unit includes a scintillator, a photodetector having a light-receiving surface on which a light-receiving element and wiring for reading out an electrical signal from the light-receiving element are formed, and a flexible support body for supporting the photodetector, the peeling assisting member is provided on a part of a surface of the internal module on the side of the irradiation portion, The thickness of the peeling assisting member is less than half the thickness of the radiation detecting unit.

[0011] The radiographic imaging device of the invention described in claim 5 is a housing having an irradiation portion to be irradiated with radiation; an internal module including a radiation detection unit that is removably fixed to the inner surface of the irradiation site by an adhesive member and detects radiation, and a metal holding base that holds the radiation detection unit; a peeling assist member disposed between the internal module and the irradiation portion; Equipped with the radiation detection unit includes a scintillator, a light detection unit having a light receiving surface on which a light receiving element and wiring for reading out an electrical signal from the light receiving element are formed, and a support body for supporting the light detection unit, The peeling aid member is provided on a part of the surface of the internal module facing the irradiation area, and has a shape in which the thickness of the end on the internal module gradually decreases or decreases in steps as it approaches the end of the end.

[0012] The invention described in claim 6 is the radiographic imaging device according to any one of claims 1 to 5, The peeling aid member is a film made of resin. [Effects of the Invention]

[0013] According to the present invention, it is possible to suppress the occurrence of image unevenness and prevent damage to the radiation detection unit. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a perspective view of a front and a part of a side of a radiographic image capturing apparatus. [Figure 2] 2 is a schematic cross-sectional view of the radiographic image capturing apparatus of FIG. 1 according to the first embodiment, taken along line II-II. [Figure 3] FIG. 3 is a partial cross-sectional view III of FIG. [Figure 4] FIG. 2 is a plan view showing the configuration of the surface of an element substrate. [Figure 5A] FIG. 10 is a side cross-sectional view showing an example of how the internal module is peeled off from the housing. [Figure 5B] FIG. 10 is a side cross-sectional view showing an example of how the internal module is peeled off from the housing. [Figure 6] 2 is a schematic cross-sectional view taken along line II-II of the radiographic image capturing apparatus of FIG. 1 according to a second embodiment. [Figure 7] FIG. 7 is a partial cross-sectional view VII of FIG. [Figure 8] 10 is a diagram showing the relationship between the thickness of a peeling assisting member and the thickness of an element substrate. FIG. [Figure 9A] FIG. 7 is a partial cross-sectional view VII of FIG. 6 according to the fifth embodiment. [Figure 9B] FIG. 7 is a partial cross-sectional view VII of FIG. 6 according to the fifth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to those shown in the drawings.

[0016] First Embodiment The schematic configuration of a radiographic image capturing apparatus 100 according to the first embodiment will be described. The radiographic image capturing device 100 generates a radiographic image according to the received radiation.

[0017] [1. Housing] The radiographic imaging device 100 includes a housing 110 that is rectangular in plan view. Fig. 1 is a perspective view of a front surface 110a and a portion of a side surface 110c of the housing 110, on which radiation is incident. The surface of the housing 110 opposite the front surface 110a is referred to as a back surface 110b. In FIG. 1, the X-axis direction is parallel to the short sides of the housing 110. The Y-axis direction is parallel to the long sides of the housing 110. The Z-axis direction (front-rear direction) is the thickness direction of the housing 110. The arrows on each axis are positive (plus) directions. That is, in the X-axis direction, the side where the connector 51, antenna 56, and operation unit 57 (described later) are provided is the negative (minus) direction. In the Y-axis direction, the direction from the antenna 56 toward the connector 51 is the positive (positive) direction. In the Z-axis direction, the direction from the rear surface 110b toward the front surface 110a is the positive (positive) direction.

[0018] As shown in FIG. 1, a side surface 110c of the housing 110 includes a connector 51, an antenna 56, and an operation unit 57. The connector 51 supplies power from the outside via a wired connection and communicates with the outside. The antenna 56 performs wireless communication with an external device. The operation unit 57 includes switches such as a power switch and a changeover switch.

[0019] FIG. 2 is a schematic cross-sectional view of the radiographic image capturing apparatus 100 shown in FIG. 1 taken along line II-II. 2, the housing 110 is in the form of a rectangular panel and includes a box body 1 and a lid body 2. The housing 110 houses an internal module 120.

[0020] The box 1 is made of a material that transmits radiation. For example, the material of the box 1 is carbon fiber reinforced plastic (CFRP) containing short fibers. Carbon fiber reinforced plastic has high radiation transmittance, so radiation that has passed through the subject reaches the internal module 120 without attenuation along the way. This makes it possible to improve the image quality of the radiographic image compared to when the box 1 is made of other materials. The lid 2 may be made of the same material as the box 1, but may also be made of a material with excellent electrical and thermal conductivity, such as aluminum, magnesium, or an alloy thereof.

[0021] [1-1. Box body] As shown in Fig. 2, the box 1 has a front surface 11 and side surfaces 12. The front surface 11 is an irradiation area to which radiation is irradiated. The front surface 11 and side surfaces 12 are integrally formed. Alternatively, the front surface 11 and side surfaces 12 may be separate members.

[0022] (1-1-1.Front part) The front surface part 11 extends parallel to the radiation detection part 3. The outer surface of the front surface part 11 is the radiation incident surface 110a (front surface) of the radiographic imaging device 100 (housing 110). The front surface part 11 is formed in the shape of a rectangular plate. The radiation incident surface 110a is indicated by a frame (not shown) which defines the range of the effective image area of ​​the radiation detection unit 3. The effective image area of ​​the radiation detection unit 3 is an area in which a plurality of photoelectric conversion elements 31f (see FIG. 4) are arranged.

[0023] (1-1-2. Side part) The side surface portion 12 extends from the peripheral edge of the front surface portion 11 in a direction perpendicular to the radiation incident surface 110a and in a direction toward the rear surface portion 21 (negative direction of the Z axis). The outer surface of the side surface portion 12 is the side surface 110c of the radiographic imaging device 100 (housing 110).

[0024] [1-2. Lid] As shown in Fig. 2, the lid body 2 has a rear surface portion 21. The entire lid body 2 according to this embodiment is the rear surface portion 21. The rear surface portion 21 faces the front surface portion 11 of the box body 1 across the internal module 120 and extends parallel to the front surface portion 11. The outer surface of the rear surface portion 21 is the rear surface 110b of the radiographic imaging device 100 (housing 110).

[0025] The cover 2 (rear portion 21) abuts against the side surface portion 12 of the box body 1 and is attached to the side surface portion 12. In this way, the side surface portion 12 connects the front surface portion 11 and the rear surface portion 21. The lid 2 according to this embodiment is fastened to the box 1 with screws. Therefore, when repairing or maintaining the radiographic imaging device 100, the rear surface 21 can be separated from the front surface 11 and the side surface 12 simply by loosening and removing the screws. That is, a person performing maintenance on the radiographic imaging device 100 can easily access the internal module 120 housed within the front surface 11 and the side surface 12. When fastening the lid 2 to the box 1 with screws, the portions of the screw heads visible from the outside may be covered with a resin film, an elastic material, or the like. This prevents rust and dirt buildup on the portions of the screw heads visible from the outside due to external moisture. The housing 110 may be made waterproof and dustproof by sandwiching a packing such as an O-ring or waterproof cushioning material between the lid 2 and the box 1 and screwing or gluing them together. Preventing moisture from entering the inside of the housing 110 prevents moisture from affecting the radiation detection unit 3 and the electrical components 5 (described below). When the lid 2 and the box 1 are glued together, no packing is needed between the lid 2 and the box 1, and waterproofing can be improved compared to when a packing is sandwiched between the lid 2 and the box 1 and screwed together.

[0026] [1-3. Other] 2 illustrates a housing 110 (box 1) in which the side surface portion 12 is integrally formed with the front surface portion 11. However, the housing 110 may be one in which the side surface portion 12 is integral with the rear surface portion 21, or the front surface portion 11, the side surface portion 12, and the rear surface portion 21 may each be separate members.

[0027] [2. Internal Module] The internal module 120 includes a radiation detection unit 3, a holding base 4, an electric component 5, a vibration damping member 8, a peeling assist member 9, and the like.

[0028] [2-1. Radiation detection unit] 2, the radiation detection unit 3 is fixed to the holding base 4 by a first adhesive member 6. The radiation detection unit 3 is fixed to the front surface 11 of the housing 110 by a second adhesive member 7 via a peeling assisting member 9. In other words, the internal module 120 is fixed to the front surface 11 of the housing 110 by the second adhesive member 7. FIG. 3 shows a partial cross-sectional view III of FIG. As shown in FIG. 3, the radiation detection unit 3 includes an element substrate 31 (support), an optical adhesive layer 32, a scintillator 33, a scintillator substrate 34, a moisture-proof layer 35, and the like.

[0029] The element substrate 31 is made of a glass substrate and has photoelectric conversion elements and the like arranged on the glass substrate. The element substrate 31 may be made of a substrate other than a glass substrate that transmits light such as radiation and ultraviolet light. For example, the element substrate 31 may be made of a flexible material. Examples of flexible materials include polyethylene naphthalate, polyethylene terephthalate (PET), polycarbonate (PC), polyimide, polyamide, polyetherimide, aramid, polysulfone, polyethersulfone, fluororesin, polytetrafluoroethylene (PTFE), and composite materials made by mixing at least two or more of these. Among the above materials, polyimide, polyamide, polyetherimide, PTFE, or composite materials thereof are particularly preferred from the viewpoint of improving heat resistance.

[0030] 4 is a plan view showing the configuration of the surface of the element substrate 31. A plurality of scanning lines 31b and a plurality of signal lines 31c are arranged on the surface 31a of the element substrate 31 so as to intersect with each other. The surface 31a is the surface facing the scintillator 33 via the optical adhesive layer 32. A plurality of bias lines 31d are arranged in parallel with the plurality of signal lines 31c. In this embodiment, each bias line 31d is bound by a single connecting wire 31e at one end on the element substrate 31. A photoelectric conversion element 31f is provided in each small region R defined by a plurality of scanning lines 31b and a plurality of signal lines 31c on the surface 31a of the element substrate 31. As described above, in this embodiment, a plurality of photoelectric conversion elements 31f are formed on the surface 31a of the element substrate 31 so as to be two-dimensionally arranged. Each of the photoelectric conversion elements 31f is connected to a bias line 31d. In this embodiment, a bias voltage is applied to the photoelectric conversion elements 31f from a bias power supply (not shown) via the bias line 31d.

[0031] In this embodiment, a photodiode is used as the photoelectric conversion element 31f, which, when irradiated with radiation and output from the scintillator 33, absorbs the light energy and generates electron-hole pairs inside, thereby converting the light energy into an electric charge. One thin film transistor (Thin Film Transistor) 31g is provided for each photoelectric conversion element 31f in each small region R. The source electrode of the thin film transistor 31g is connected to one electrode of the photoelectric conversion element 31f, the drain electrode of the thin film transistor 31g is connected to the signal line 31c, and the gate electrode of the thin film transistor 31g is connected to the scanning line 31b.

[0032] 3, the optical adhesive layer 32 is provided between the element substrate 31 and the scintillator 33, and bonds the element substrate 31 and the scintillator 33 together. The optical adhesive layer 32 is made of an optical adhesive. The optical adhesive is, for example, an olefin-based, amide-based, ester-based, styrene-based, acrylic-based, urethane-based, vinyl-based, polycarbonate, or a thermoplastic resin whose main component is ABS resin (acrylonitrile-butadiene-styrene copolymer resin).

[0033] The scintillator 33 converts incident radiation into light of a different wavelength. The scintillator 33 mainly contains a phosphor. The phosphor preferably used is one in which a luminescent center substance is activated within a host material, such as thallium-activated cesium iodide (CsI:Tl), sodium-activated cesium iodide (CsI:Na), or terbium-activated gadolinium oxysulfide (GOS). The scintillator 33 is formed in the shape of a rectangular plate and is attached to a scintillator substrate 34 .

[0034] The scintillator substrate 34 is formed of a flexible material in the shape of a rectangular plate.

[0035] The moisture-proof layer 35 prevents the scintillator 33 from absorbing moisture. The moisture-proof layer 35 is formed in a sheet shape from a material that does not allow moisture to pass through, such as aluminum-deposited resin. The portion of the moisture-proof layer 35 that contacts the scintillator substrate 34 is attached to the scintillator substrate 34 via an adhesive layer (not shown).

[0036] As described above, the radiation detection unit 3 includes the scintillator 33, a photodetector having a light-receiving surface (surface 31a) on which light-receiving elements (photoelectric conversion elements 31f) and wiring (signal lines 31c) for reading out electrical signals from the light-receiving elements are formed, and a support (element substrate 31) that supports the photodetector.

[0037] The radiation detection unit 3 may not include the scintillator 33, but may be a direct conversion type in which an element that directly converts radiation into electric charges is disposed on the element substrate 31. The radiation detection unit 3 may have a shielding layer between it and the first adhesive member 6 to shield noise generated by a circuit board 52 (described later). The shielding layer may be, for example, a thin metal film, a resin film with a metal layer formed on its surface, or a film made of a transparent conductive material (such as indium tin oxide (ITO)).

[0038] [2-2. Holding base] The holding base 4 holds the radiation detection unit 3. This "holding" not only means supporting the radiation detection unit 3 against the load received from the front surface portion 11 side, but also includes the radiation detection unit 3 being provided on the holding base 4. 2, the holding base 4 is provided between the first adhesive member 6 and the back surface portion 21. This allows the holding base 4 to distribute the load that the housing 110 receives from the outside, thereby preventing the radiation detection unit 3 from bending.

[0039] The holding base 4 has a rectangular flat plate shape and is made of a magnesium alloy, which is lightweight and relatively strong. The material of the holding base 4 may be a light metal such as aluminum or an alloy thereof.

[0040] As shown in FIG. 2, the holding base 4 has a surface portion 4a and a plurality of leg portions 4b.

[0041] (2-2-1. Planar part) The planar portion 4a has a predetermined thickness in the Z-axis direction, and is provided without any gaps along the surface of the first adhesive member 6 on the rear portion 21 side. This allows the holding base 4 to further distribute the load received by the housing 110 from the outside, thereby further suppressing deflection of the radiation detection unit 3. One surface of the planar portion 4a contacts the first adhesive member 6, and the other surface contacts the battery 54 or the like. Hereinafter, the surface of the planar portion 4a that contacts the first adhesive member 6 will be referred to as the holding surface 41a. The holding surface 41a is slightly larger than the radiation detection unit 3. Therefore, the planar portion 4a can support the entire radiation detection unit 3. A gap of, for example, 1 mm or more is provided between the side surface of the planar portion 4a in the Y-axis direction and the side surface portion 12, and between the side surface of the planar portion 4a in the X-axis direction and the side surface portion 12. This makes it possible to prevent external impacts from being transmitted to the internal module 120. An opposite surface 41b of the planar portion 4a, which is the surface opposite to the holding surface 41a, is provided with a female screw (not shown) for attaching a circuit board 52 or the like. When the material of the holding base 4 is metal, the female screw can be formed directly on the planar portion 4a, and therefore the radiographic image capturing device 100 can be easily manufactured.

[0042] (2-2-2. Leg-shaped part) 2, the leg portion 4b is provided so as to protrude from the opposite surface 41b of the planar portion 4a until it abuts against the back surface portion 21. This allows the holding base 4 to be held and the load from the front surface portion 11 side of the radiographic image capturing device 100 to be supported.

[0043] (2-2-3. Holding base and others) As shown in FIG. 2, the recess 4c is formed by the planar portion 4a and the plurality of leg portions 4b. The recess 4c accommodates the circuit board 52, the battery 54, etc. The width, depth, and height (width in the Z-axis direction) of the recess 4c are large enough to accommodate the circuit board 52, the battery 54, etc. The depth of the recess 4c is larger than the width in the Z-axis direction of the circuit board 52 including the elements on the circuit board 52.

[0044] [2-3. Electrical Components] As shown in FIGS. 1 and 2, the electrical component 5 includes a connector 51, a circuit board 52, wiring 53, a battery 54, an antenna 56, an operation unit 57, a readout IC 58, and the like.

[0045] The connector 51 can be connected to an external connector for supplying power from an external device via a wired connection or for communicating with an external device. The connector 51 is connected to a circuit board 52 and outputs external power and communication signals to the circuit board 52. The antenna 56 performs wireless communication with an external device. The antenna 56 is connected to the circuit board 52 and outputs a communication signal from the outside to the circuit board 52. The operation unit 57 is a switch such as a power switch, a changeover switch, etc. The operation unit 57 is connected to the circuit board 52, and outputs an input operation signal to the circuit board 52. The readout IC 58 converts the output signal from the radiation detection unit 3 into image data.

[0046] (2-3-1. Circuit board) The circuit board 52 is spaced apart from the rear surface portion 21. This makes it possible to prevent the load received by the housing 110 from being transmitted to the circuit board 52 from the outside. Various electronic circuits are mounted on the circuit board 52. The circuit board 52 includes an SIF board, a control board, a board on which a wireless communication circuit is mounted, a board on which a power supply circuit is mounted, and the like. The SIF board is connected to the radiation detection unit 3 via wiring 53, and the output signal of the radiation detection unit 3 is read out via the wiring 53 and a readout IC 58 provided thereon. The control board controls each circuit to generate image data. The wireless communication circuit is a circuit for wireless communication with other devices. The power supply circuit is a circuit for applying voltage to semiconductor elements and supplying power to the above circuits.

[0047] (2-3-2. Wiring) The wiring 53 is configured by, for example, a flexible printed circuit board (Flexible Printed Circuits). The wiring 53 connects the terminals of the signal lines (photoelectric conversion elements 31f) of the radiation detection unit 3, the readout IC 58, and the circuit board 52.

[0048] (2-3-3. Battery) The battery 54 supplies power to each component of the radiographic imaging device 100. In this embodiment, the battery 54 is a lithium ion capacitor, but it may be a lithium ion battery, another rechargeable battery, or the like. A plurality of batteries 54 may be provided.

[0049] [2-4. Vibration Damping Materials] The vibration damping member 8 damps the vibration of the readout IC 58 . The vibration damping member 8 is disposed between the wiring 53 and the rear surface portion 21 at a position facing the readout IC 58 with the wiring 53 interposed therebetween.

[0050] [2-5. First adhesive member] As shown in FIG. 3, the first adhesive member 6 includes adhesive layers 61 and 63 and a buffer material 62. The adhesive layers 61 and 63 are adhesive agents, adhesive tapes, or the like. The buffer material 62 is provided between the adhesive layer 61 and the adhesive layer 63, and serves to absorb external loads and shocks. The first adhesive member 6 is provided between the radiation detection unit 3 and the holding base 4. This prevents the transmission of loads, impacts, etc. received from the rear surface portion 21 side to the radiation detection unit 3. The adhesive layers 61 and 63 and the buffer material 62 may have antistatic properties.

[0051] [2-6. Second adhesive member] As shown in FIG. 3, the second adhesive member 7 includes an adhesive layer 71 arranged on the front surface portion 11 side, a cushioning material 72, and a peelable adhesive layer 73 arranged on the peeling auxiliary member 9 side. The adhesive layer 71 and the peelable adhesive layer 73 are adhesive agents, adhesive tapes, or the like. The adhesive strength of the peelable adhesive layer 73 is weaker than that of the adhesive layer 71, and is strong enough to prevent peeling from the peeling aid member 9 due to external disturbances. The peelable adhesive layer 73 does not peel from the peeling aid member 9 during use of the radiographic imaging device 100. On the other hand, the peelable adhesive layer 73 can be peeled from the peeling aid member 9 when the internal module 120 is peeled (reworked) from the front surface part 11. The adhesive strength of the peelable adhesive layer 73 is weaker than the adhesive strength of the adhesive bonding together the components stacked inside the radiation detection unit 3. This prevents the stacked components inside the radiation detection unit 3 from peeling off due to the peeling force when the internal module 120 is peeled off from the front surface unit 11. In the second adhesive member 7, the adhesive layer 71 may be disposed on the peeling auxiliary member 9 side, and the peelable adhesive layer 73 may be disposed on the front surface portion 11 side. In this case, the peelable adhesive layer 73 can be peeled off from the front surface portion 11 when the internal module 120 is peeled off (reworked) from the front surface portion 11.

[0052] The cushioning material 72 is provided between the adhesive layer 71 and the peelable adhesive layer 73, and absorbs external loads and impacts. The second adhesive member 7 is provided between the front surface 11 of the housing 110 and the peeling aid member 9. This prevents loads, impacts, etc. received from the front surface 11 side from being transmitted to the radiation detection unit 3 via the peeling aid member 9. The adhesive layer 71, the buffer material 72 and the peelable adhesive layer 73 may have antistatic properties.

[0053] The first adhesive member 6 and the second adhesive member 7 may have different configurations as in this embodiment, or may have the same configuration.

[0054] [2-7. Peeling aid] The peeling auxiliary member 9 is disposed between the radiation detection unit 3 and the second adhesive member 7, and includes a film material 91 and an adhesive layer 92. The film material 91 is made of a resin such as PET, PC, or OPP (oriented polypropylene). The adhesive layer 92 is an adhesive, a pressure-sensitive adhesive tape, or the like, and fixes the peeling aid member 9 to the radiation detection unit 3. In other words, the peeling aid member 9 is releasably fixed to the inner surface of the irradiation area (front surface unit 11) by the second adhesive member 7 between the internal module 120 and the front surface unit 11. The peeling auxiliary member 9 in the first embodiment is provided over the entire surface (front surface 3a) on the front surface 11 side of the radiation detection unit 3. In other words, the peeling auxiliary member 9 in the first embodiment is provided over the entire surface on the irradiation site (front surface 11) side of the internal module 120. The peeling assisting member 9 of the first embodiment has a lower bending rigidity than the internal module 120, and can bend when a load such as an external force is applied.

[0055] The peeling aid member 9 is configured to be grippable when peeling the internal module 120 from the front surface part 11. The peeling aid member 9 makes it easier to apply force to the internal module 120, and therefore the internal module 120 can be easily peeled from the front surface part 11. When the peeling aid member 9 is stored in the housing 110, it is stored in a folded state on the internal module 120 side.

[0056] When peeling the internal module 120 from the front surface portion 11, the user removes the lid 2 and turns the box 1 over, as shown in Fig. 5A. Next, the user grasps the folded peeling aid member 9 and pulls it in the peeling direction (upward in the figure), as shown in Fig. 5B. This allows the internal module 120 to be easily peeled from the front surface portion 11. The gripping portion of the peeling assist member 9 may be fixed to the holding base 4 by adhesive, adhesive tape, mechanical fasteners, etc. This suppresses peeling electrification that occurs when the gripping portion of the peeling assist member 9 moves inside the housing 110, thereby preventing noise from being applied to the electric component 5.

[0057] The peeling aid member 9 in the first embodiment is provided on the entire surface of the front surface portion 11 side of the internal module 120, so that the adhesive area between the peeling aid member 9 and the internal module 120 is larger. Therefore, when peeling the internal module 120 from the front surface portion 11, pulling the peeling aid member 9 can prevent the peeling aid member 9 itself from peeling off from the internal module 120. Therefore, the internal module 120 can be easily peeled off from the front surface portion 11. The peeling assist member 9 in the first embodiment is provided on the entire surface of the front surface 11 side of the internal module 120, so even if a load is applied to the front surface 11, the peeling assist member 9 prevents the radiation detection unit 3 from locally bending. This prevents local steps from occurring in the radiation detection unit 3, making it possible to suppress the occurrence of distortion (image unevenness) in images generated by the radiographic imaging device 100. Damage to the radiation detection unit 3 can be prevented.

[0058] Second Embodiment Next, a second embodiment of the present invention will be described, focusing mainly on the differences from the first embodiment.

[0059] Fig. 6 is a schematic cross-sectional view taken along line II-II of the radiographic imaging device 100 according to the second embodiment. Fig. 7 shows a partial cross-sectional view VII of Fig. 6. 6 and 7, the peeling auxiliary member 9 of the second embodiment is provided only on a portion in the Y-axis direction of the surface (front surface 3a) on the front surface 11 side of the radiation detection unit 3. In other words, the peeling auxiliary member 9 of the second embodiment is provided on a portion of the surface on the irradiation site (front surface 11) side of the internal module 120. The portion of the front surface 3a where the peeling assisting member 9 is not provided is releasably fixed to the inner surface of the irradiation area (front surface portion 11) by the second adhesive member .

[0060] By providing the peeling aid member 9 only on a portion of the front surface 3a in the Y-axis direction, the size of the peeling aid member 9 can be made smaller than the peeling aid member 9 of the first embodiment. This allows the weight of the radiographic image capturing device 100 to be reduced, and / or the cost of the radiographic image capturing device 100 to be reduced. In the radiographic imaging device 100 of the first embodiment, the radiation detection unit 3 and the front surface 11 are fixed together via the second adhesive member 7 and the peeling assist member 9. On the other hand, in the radiographic imaging device 100 of the second embodiment, the attachment area of ​​the peeling assist member 9 is made smaller than in the first embodiment, so that the radiation detection unit 3 and the front surface 11 are fixed together by the second adhesive member 7 alone. This allows the second adhesive member 7 and the peeling assist member 9 to have different functions, and therefore the second adhesive member 7 and the peeling assist member 9 can be made from materials optimized for their respective functions. The attachment area of ​​the peeling aid member 9 is desirably about 6% of the width of the front surface 3a in the Y-axis direction from the end in order to provide a sufficient attachment area and to suppress the effects of weight, cost, etc. However, by adjusting the adhesive strength, adhesive area, thickness, etc. of the adhesive layer 92, the attachment area of ​​the peeling aid member 9 can fulfill its function even if it is larger or smaller than 6%.

[0061] The width in the X-axis direction of the peeling aid member 9 in the second embodiment is approximately the same as the width in the X-axis direction of the radiation detection unit 3. This ensures an adhesive area between the peeling aid member 9 and the internal module 120 that is large enough to prevent the peeling aid member 9 itself from peeling off from the internal module 120 by pulling the peeling aid member 9 when peeling the internal module 120 from the front surface part 11. The width in the X-axis direction of the peeling auxiliary member 9 in the second embodiment may be smaller than the width in the X-axis direction of the radiation detection unit 3. In other words, the peeling auxiliary member 9 in the second embodiment may be provided only on a part of the front surface 3a in the X-axis direction. In this case, the area of ​​the peeling auxiliary member 9 is smaller, and the weight of the radiographic image capturing device 100 can be reduced.

[0062] The thickness T1 (width in the Z-axis direction) of the peeling assist member 9 in the second embodiment is thinner than the thickness T2 of the second adhesive member 7. As a result, even if a load is applied to the front surface portion 11, the deflection caused by the peeling assist member 9 can be absorbed by the second adhesive member 7 contracting in the Z-axis direction. This prevents localized steps from occurring in the radiation detection unit 3, and suppresses the occurrence of distortion (image unevenness) in the image generated by the radiographic imaging device 100. This prevents damage to the radiation detection unit 3. On the other hand, when the thickness T1 of the peeling assist member 9 is equal to or greater than the thickness T2 of the second adhesive member 7, the portion of the second adhesive member 7 that overlaps with the peeling assist member 9 in the Z-axis direction is in a state of contraction in the Z-axis direction even when no load is applied to the front surface portion 11. Therefore, when a load is applied to the front surface portion 11, the second adhesive member 7 cannot absorb the deflection caused by the peeling assist member 9. This causes localized steps in the radiation detection unit 3, resulting in distortion (image unevenness) in the images generated by the radiographic imaging device 100. If localized deflection occurs repeatedly in the radiation detection unit 3, there is a possibility that the radiation detection unit 3 may be damaged.

[0063] <Third embodiment> Next, a third embodiment of the present invention will be described, focusing mainly on the differences from the second embodiment.

[0064] The element substrate 31 of the radiation detection unit 3 of the third embodiment is made of a glass substrate. The thickness T1 (width in the Z-axis direction) of the peeling auxiliary member 9 of the third embodiment is thinner than half the thickness T3 (see FIG. 7) of the support (element substrate 31).

[0065] The above configuration of the third embodiment will be described below. The amount of deflection of the radiation detection unit 3 when a load is applied to the front surface portion 11, etc., decreases as the bending rigidity of the radiation detection unit 3 increases. The bending rigidity of the radiation detection unit 3 is significantly affected by the bending rigidity of the support (element substrate 31). In other words, when the element substrate 31 is made of a glass substrate, the bending rigidity of the radiation detection unit 3 is higher than when the element substrate 31 is made of a flexible material, and therefore the amount of deflection of the radiation detection unit 3 is smaller. On the other hand, the thicker the peeling assisting member 9, the greater the amount of local deflection of the radiation detecting unit 3 when a load is applied to the front surface portion 11.

[0066] FIG. 8 shows the relationship between the thickness of the peeling assist member 9 and the thickness of the support (element substrate 31). In the example shown in FIG. 8, the thickness of the glass element substrate 31 is 0.5 mm. In the example shown in FIG. 8, the case where the density variation in the image (captured image) generated by the radiation image capturing device 100 is equal to or less than the reference value is designated as A. When the density variation in the captured image is equal to or less than the reference value, the captured image is not adversely affected. On the other hand, the case where the density variation in the captured image is greater than the reference value is designated as B. When the density variation in the captured image is greater than the reference value, the captured image may be adversely affected. 8, in order to suppress the amount of bending of the radiation detection unit 3 to a level that does not adversely affect the captured image, the ratio (thickness of the peeling aid member 9) / (thickness of the element substrate 31) needs to be at least less than 0.5. The ratio (thickness of the peeling aid member 9) / (thickness of the element substrate 31) is the value obtained by dividing the thickness of the peeling aid member 9 by the thickness of the element substrate 31. In other words, the thickness T1 of the peeling aid member 9 needs to be thinner than half the thickness T3 of the element substrate 31.

[0067] As described above, in the third embodiment, even if a load is applied to the front surface portion 11, the amount of deflection of the radiation detection unit 3 caused by the peeling assist member 9 can be reduced to a level that does not affect the captured image. In other words, the occurrence of distortion (image unevenness) in the captured image can be reduced. By reducing the amount of deflection of the radiation detection unit 3, damage to the radiation detection unit 3 can be prevented.

[0068] <Fourth embodiment> Next, a fourth embodiment of the present invention will be described, focusing mainly on the differences from the second embodiment.

[0069] The element substrate 31 of the radiation detection unit 3 of the fourth embodiment is made of a flexible material, which gives the radiation detection unit 3 flexibility. The thickness T1 (width in the Z-axis direction) of the peeling auxiliary member 9 of the fourth embodiment is thinner than half the thickness T4 of the radiation detection unit 3 (see FIG. 7).

[0070] The above configuration of the fourth embodiment will be described below. The flexible radiation detection unit 3 of the fourth embodiment has lower bending rigidity than the radiation detection unit 3 having the glass element substrate 31 of the third embodiment, and is therefore more likely to bend. For this reason, it is necessary to take into consideration the bending rigidity of the entire radiation detection unit 3, which includes the element substrate 31, the optical adhesive layer 32, the scintillator 33, the scintillator substrate 34, and the moisture-proof layer 35. In order to keep the amount of bending of the radiation detection unit 3 to a level that does not affect the captured image, the thickness T1 of the peeling assist member 9 needs to be thinner than half the thickness T3 of the radiation detection unit 3.

[0071] As described above, in the fourth embodiment, even if a load is applied to the front surface portion 11, the amount of deflection of the radiation detection unit 3 caused by the peeling assist member 9 can be reduced to a level that does not affect the captured image. In other words, the occurrence of distortion (image unevenness) in the captured image can be reduced. By reducing the amount of deflection of the radiation detection unit 3, it is possible to prevent damage to the radiation detection unit 3.

[0072] Fifth Embodiment Next, a fifth embodiment of the present invention will be described, focusing mainly on the differences from the second embodiment.

[0073] 9A and 9B show a partial cross-sectional view VII of FIG. 6 in the fifth embodiment. 9A, the peeling auxiliary member 9 of the fifth embodiment has a tapered portion 9a in which the thickness of the end portion on the radiation detection unit 3 gradually decreases toward the end of the end. In other words, the peeling auxiliary member 9 of the fifth embodiment has a shape in which the thickness of the end portion on the internal module 120 gradually decreases toward the end of the end. 9B, the peeling auxiliary member 9 of the fifth embodiment has a step portion 9b in which the thickness of the end portion on the radiation detection unit 3 gradually decreases toward the end of the end. In other words, the peeling auxiliary member 9 of the fifth embodiment has a shape in which the thickness of the end portion on the internal module 120 gradually decreases toward the end of the end.

[0074] As described above, in the fifth embodiment, by having the gradually tapering portion 9a or the stepped portion 9b, even if a load is applied to the front surface portion 11, the peeling assist member 9 can make the step that occurs in the radiation detection unit 3 gentle enough so as not to affect the captured image. This can prevent the occurrence of disturbances (image unevenness) in the image generated by the radiographic imaging device 100. By making the step that occurs in the radiation detection unit 3 gentle, it is possible to prevent damage to the radiation detection unit 3.

[0075] [3. Effects] As described above, the radiographic image capturing apparatus 100 of this embodiment includes the housing 110 having the irradiation area (front surface 11) to which radiation is irradiated. The radiographic image capturing apparatus 100 of this embodiment includes an internal module 120 including a radiation detection unit 3 that detects radiation and a metal holding base 4 that holds the radiation detection unit 3. The radiographic image capturing device 100 of this embodiment has a lower bending rigidity than the internal module 120 and includes a peeling assist member 9 disposed between the internal module 120 and the irradiation site. The radiation detection unit 3 includes a scintillator 33, a photodetector having a light receiving surface (surface 31a) on which a light receiving element (photoelectric conversion element 31f) and wiring (signal line 31c) for reading out an electrical signal from the light receiving element are formed, and a support (element substrate 31) for supporting the photodetector. The peeling assisting member 9 is provided on the entire surface of the inner module 120 on the side of the irradiation area, and is removably fixed to the inner surface of the irradiation area by an adhesive member (second adhesive member 7). Therefore, because the peeling assisting member 9 is provided on the entire surface on the front surface 11 side of the internal module 120, even if a load is applied to the front surface 11, the peeling assisting member 9 prevents the radiation detection unit 3 from locally bending. This prevents local steps from occurring in the radiation detection unit 3, making it possible to suppress the occurrence of distortion (image unevenness) in images generated by the radiographic imaging device 100. Damage to the radiation detection unit 3 can be prevented.

[0076] The radiographic image capturing device 100 of this embodiment includes a housing 110 having an irradiation area (front surface 11) to be irradiated with radiation. The radiographic imaging device 100 of this embodiment comprises an internal module 120 including a radiation detection unit 3 that is removably fixed to the inner surface of the irradiation area by an adhesive member (second adhesive member 7) and detects radiation, and a metal holding base 4 that holds the radiation detection unit 3. The radiographic image capturing device 100 of this embodiment includes a peeling assist member 9 disposed between the internal module 120 and the irradiation site. The radiation detection unit 3 includes a scintillator 33, a photodetector having a light receiving surface (surface 31a) on which a light receiving element (photoelectric conversion element 31f) and wiring (signal line 31c) for reading out an electrical signal from the light receiving element are formed, and a support (element substrate 31) for supporting the photodetector. The peeling assist member 9 is provided on a part of the surface of the internal module 120 on the irradiation site side. The thickness of the peeling aid member 9 is thinner than the thickness of the adhesive member. Therefore, even if a load is applied to the front surface portion 11, the deflection caused by the peeling assist member 9 can be absorbed by the second adhesive member 7 contracting in the Z-axis direction. This prevents localized steps from occurring in the radiation detection unit 3, thereby preventing distortion (image unevenness) from occurring in the image generated by the radiographic imaging device 100. This prevents damage to the radiation detection unit 3.

[0077] The radiographic image capturing device 100 of this embodiment includes a housing 110 having an irradiation area (front surface 11) to be irradiated with radiation. The radiographic imaging device 100 of this embodiment comprises an internal module 120 including a radiation detection unit 3 that is removably fixed to the inner surface of the irradiation area by an adhesive member (second adhesive member 7) and detects radiation, and a metal holding base 4 that holds the radiation detection unit 3. The radiographic image capturing device 100 of this embodiment includes a peeling assist member 9 disposed between the internal module 120 and the irradiation site. The radiation detection unit 3 includes a scintillator 33, a photodetector having a light receiving surface (surface 31a) on which a light receiving element (photoelectric conversion element 31f) and wiring (signal line 31c) for reading out an electrical signal from the light receiving element are formed, and a glass support (element substrate 31) that supports the photodetector. The peeling assist member 9 is provided on a part of the surface of the internal module 120 on the irradiation site side. The thickness of the peeling aid member 9 is less than half the thickness of the support. Therefore, even if a load is applied to the front surface portion 11, the amount of deflection of the radiation detection unit 3 caused by the peeling assist member 9 can be reduced to a level that does not affect the captured image. In other words, the occurrence of distortion (image unevenness) in the captured image can be reduced. By reducing the amount of deflection of the radiation detection unit 3, damage to the radiation detection unit 3 can be prevented.

[0078] The radiographic image capturing device 100 of this embodiment includes a housing 110 having an irradiation area (front surface 11) to be irradiated with radiation. The radiographic imaging device 100 of this embodiment comprises an internal module 120 including a radiation detection unit 3 that is removably fixed to the inner surface of the irradiation area by an adhesive member (second adhesive member 7) and detects radiation, and a metal holding base 4 that holds the radiation detection unit 3. The radiographic image capturing device 100 of this embodiment includes a peeling assist member 9 disposed between the internal module 120 and the irradiation site. The radiation detection unit 3 includes a scintillator 33, a photodetector having a light receiving surface (surface 31a) on which a light receiving element (photoelectric conversion element 31f) and wiring (signal line 31c) for reading out an electrical signal from the light receiving element are formed, and a flexible support (element substrate 31) for supporting the photodetector. The peeling assist member 9 is provided on a part of the surface of the internal module 120 on the irradiation site side. The thickness of the peeling auxiliary member 9 is less than half the thickness of the radiation detection unit 3 . Therefore, even if a load is applied to the front surface portion 11, the amount of deflection of the radiation detection unit 3 caused by the peeling assist member 9 can be reduced to a level that does not affect the captured image. In other words, the occurrence of distortion (image unevenness) in the captured image can be reduced. By reducing the amount of deflection of the radiation detection unit 3, damage to the radiation detection unit 3 can be prevented.

[0079] The radiographic image capturing device 100 of this embodiment includes a housing 110 having an irradiation area (front surface 11) to be irradiated with radiation. The radiographic imaging device 100 of this embodiment comprises an internal module 120 including a radiation detection unit 3 that is removably fixed to the inner surface of the irradiation area by an adhesive member (second adhesive member 7) and detects radiation, and a metal holding base 4 that holds the radiation detection unit 3. The radiographic image capturing device 100 of this embodiment includes a peeling assist member 9 disposed between the internal module 120 and the irradiation site. The radiation detection unit 3 includes a scintillator 33, a photodetector having a light receiving surface (surface 31a) on which a light receiving element (photoelectric conversion element 31f) and wiring (signal line 31c) for reading out an electrical signal from the light receiving element are formed, and a support (element substrate 31) for supporting the photodetector. The peeling aid member 9 is provided on a part of the surface of the internal module 120 on the side of the irradiated area, and has a shape in which the thickness of the end on the internal module 120 gradually decreases or decreases in stages as it approaches the end of the end. Therefore, even if a load is applied to the front surface portion 11, the peeling assist member 9 can make the step that occurs in the radiation detection unit 3 gentle enough to not affect the captured image. This can prevent distortion (image unevenness) from occurring in the image generated by the radiographic image capturing device 100. By making the step that occurs in the radiation detection unit 3 gentle, it is possible to prevent damage to the radiation detection unit 3.

[0080] In the radiographic image capturing apparatus 100 of this embodiment, the peeling assisting member 9 is a film made of resin. This allows the weight of the radiographic image capturing apparatus 100 to be reduced.

[0081] The present invention is not limited to the above-described embodiment, and various modifications are possible. For example, in the above embodiment, the radiation detection unit 3 is configured such that the scintillator 33 is disposed on the positive side of the Z axis, and the photodetector having a light-receiving surface (surface 31a) on which light-receiving elements (photoelectric conversion elements 31f) and wiring (signal lines 31c) for reading out electrical signals from the light-receiving elements are disposed on the negative side of the Z axis, but this is not limiting. The radiation detection unit 3 may be configured such that the photodetector is disposed on the positive side of the Z axis, and the scintillator 33 is disposed on the negative side of the Z axis. In the above embodiment, the peeling auxiliary member 9 is provided between the second adhesive member 7 and the radiation detection unit 3, but this is not limiting. The peeling auxiliary member 9 may be provided between the front surface portion 11 and the second adhesive member 7. Even in this case, the peeling auxiliary member 9 makes it easier to apply force to the internal module 120, so that the internal module 120 can be easily peeled off from the front surface portion 11.

[0082] In addition, the specific configurations, operation contents and procedures shown in the above embodiments can be modified as appropriate within the scope that does not deviate from the spirit of the present invention. [Explanation of symbols]

[0083] 100 Radiation imaging device 110 Case 110a Radiation entrance surface (front) 110b back 110c side 1 box body 11 Front part (irradiation area) 12 Side part 2 Lid 21 Back section 120 Internal Module 3 Radiation detection unit 31 Element substrate (support) 31f Photoelectric conversion element (light receiving element) 32 Optical adhesive layer 33 Scintillator 34 Scintillator substrate 35 Moisture barrier 3a Front side 4 Holding base 4a Planar part 4b Legs 4c Recess 41a Holding surface 41b opposite side 5. Electrical Components 51 Connector 52 Circuit Board 53 Wiring 54 Battery 56 Antenna 57 Operation section 58 Readout IC 6 First adhesive member 61,63 Adhesive layer 62 Cushioning material 7 Second adhesive member (adhesive member) 71 Adhesive layer 72 Cushioning material 73 Peelable adhesive layer 8. Vibration-damping members 9 Peeling aid 91 Film material 92 Adhesive layer 9a tapering part 9b Step

Claims

1. a housing having an irradiation portion to be irradiated with radiation; an internal module including a radiation detection unit that detects radiation and a metal holding base that holds the radiation detection unit; a peeling assist member having a bending rigidity lower than that of the internal module and disposed between the internal module and the irradiation site; Equipped with the radiation detection unit includes a scintillator, a light detection unit having a light receiving surface on which a light receiving element and wiring for reading out an electrical signal from the light receiving element are formed, and a support body for supporting the light detection unit, The peeling assisting member is provided on the entire surface of the internal module on the side of the irradiation area, and is releasably fixed to the inner surface of the irradiation area by an adhesive member.

2. a housing having an irradiation portion to be irradiated with radiation; an internal module including a radiation detection unit that is removably fixed to the inner surface of the irradiation site by an adhesive member and detects radiation, and a metal holding base that holds the radiation detection unit; a peeling assist member disposed between the internal module and the irradiation portion; Equipped with the radiation detection unit includes a scintillator, a light detection unit having a light receiving surface on which a light receiving element and wiring for reading out an electrical signal from the light receiving element are formed, and a support body for supporting the light detection unit, the peeling assisting member is provided on a part of a surface of the internal module on the side of the irradiation portion, A radiographic imaging device in which the thickness of the peeling assisting member is thinner than the thickness of the adhesive member.

3. a housing having an irradiation portion to be irradiated with radiation; an internal module including a radiation detection unit that is removably fixed to the inner surface of the irradiation site by an adhesive member and detects radiation, and a metal holding base that holds the radiation detection unit; a peeling assist member disposed between the internal module and the irradiation portion; Equipped with the radiation detection unit includes a scintillator, a photodetector having a light-receiving surface on which a light-receiving element and wiring for reading out an electrical signal from the light-receiving element are formed, and a glass support body for supporting the photodetector, the peeling assisting member is provided on a part of a surface of the internal module on the side of the irradiation portion, A radiographic imaging device in which the thickness of the peeling assisting member is less than half the thickness of the support.

4. a housing having an irradiation portion to be irradiated with radiation; an internal module including a radiation detection unit that is removably fixed to the inner surface of the irradiation site by an adhesive member and detects radiation, and a metal holding base that holds the radiation detection unit; a peeling assist member disposed between the internal module and the irradiation portion; Equipped with the radiation detection unit includes a scintillator, a photodetector having a light-receiving surface on which a light-receiving element and wiring for reading out an electrical signal from the light-receiving element are formed, and a flexible support body for supporting the photodetector, the peeling assisting member is provided on a part of a surface of the internal module on the side of the irradiation portion, A radiographic imaging device, wherein the thickness of the peeling assisting member is less than half the thickness of the radiation detecting unit.

5. a housing having an irradiation portion to be irradiated with radiation; an internal module including a radiation detection unit that is removably fixed to the inner surface of the irradiation site by an adhesive member and detects radiation, and a metal holding base that holds the radiation detection unit; a peeling assist member disposed between the internal module and the irradiation portion; Equipped with the radiation detection unit includes a scintillator, a light detection unit having a light receiving surface on which a light receiving element and wiring for reading out an electrical signal from the light receiving element are formed, and a support body for supporting the light detection unit, A radiological imaging device in which the peeling auxiliary member is provided on a portion of the surface of the internal module facing the irradiation area, and the thickness of the end portion on the internal module gradually decreases or decreases in stages as it approaches the end of the end portion.

6. The radiographic imaging device according to claim 1 , wherein the peeling assisting member is a film made of resin.

Images