X-ray fluoroscopy imaging device

Abstract

Even with an X-ray shielding section, the relative positions of the subject can still be visually confirmed. [Solution] The X-ray imaging apparatus comprises a top plate having a mounting surface on which a subject is placed, an irradiation unit for irradiating X-rays, a detection unit for detecting X-rays irradiated from the irradiation unit and transmitted through the subject, an X-ray shielding unit having one end attached to the irradiation unit or the detection unit and the other end extending toward the aforementioned mounting surface, and a moving mechanism for moving the irradiation unit and the detection unit, wherein a space is formed on the one end side of a part of the X-ray shielding unit, and a shielding-transmitting member that shields X-rays but transmits visible light is attached to the space.

Description

Technical Field

[0001] The technology of the present disclosure relates to an X-ray fluoroscopic imaging device.

Background Art

[0002] Conventionally, in a barium-based gastrointestinal contrast examination or the like, an X-ray imaging device is used. Among X-ray imaging devices, there is also an X-ray imaging device in which an operator is located near the X-ray imaging device and instructions are given to a subject placed on a top plate and operations of an X-ray imaging system are performed. In such an X-ray imaging device, a configuration including an X-ray shielding mechanism has been proposed to reduce the exposure of the operator to scattered X-rays from the subject (for example, Patent Document 1). This X-ray shielding mechanism includes a sheet-shaped shielding material made of lead or the like. The sheet-shaped shielding material shields between the operator located near the top plate and the X-ray imaging device, reducing the exposure dose of the operator.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the above conventional technology, since the sheet-shaped shielding material shields between the operator and the subject, the subject is hidden by the sheet-shaped shielding material, and the operator cannot visually recognize the positional relationship of the subject such as the irradiation position of the X-rays on the subject or the posture change of the subject.

[0005] The technology of the present disclosure has been made in view of the above facts, and an object thereof is to provide an X-ray fluoroscopic imaging device capable of visually recognizing the positional relationship of a subject even when an X-ray shielding unit is provided.

Means for Solving the Problems

[0006] To achieve the above objective, an X-ray imaging apparatus according to a first aspect of the technology of this disclosure comprises: a top plate having a mounting surface on which a subject is placed; an irradiation unit for irradiating X-rays; a detection unit for detecting X-rays irradiated from the irradiation unit and transmitted through the subject; an X-ray shielding unit having one end attached to the irradiation unit or the detection unit and the other end extending toward the mounting surface; and a moving mechanism for moving the irradiation unit and the detection unit, wherein a space is formed on the one end side of a part of the X-ray shielding unit, and a shielding-transmitting member that shields X-rays but transmits visible light is attached to the space. [Effects of the Invention]

[0007] The technology disclosed herein involves a part of an X-ray shielding section with a space formed at one end, into which a shielding-transmitting member that shields X-rays but transmits visible light is attached. This allows the positional relationship of the subject to be visually confirmed through the shielding-transmitting member. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a front view illustrating an example of the schematic configuration of an X-ray imaging apparatus according to this embodiment. [Figure 2] Figure 2 is a right side view illustrating an example of the schematic configuration of an X-ray imaging apparatus according to this embodiment. [Figure 3] Figure 3 shows an example of irradiating a subject placed on the mounting platform of the X-ray imaging apparatus according to this embodiment with crosshairs. [Figure 4] Figure 4 shows an example of how the light of the crosshairs irradiated onto the subject is viewed through a shielding / transmitting member. [Modes for carrying out the invention]

[0009] Embodiments of the technology of this disclosure will be described below with reference to the drawings.

[0010] (composition) Figure 1 is a front view illustrating an example of the schematic configuration of an X-ray imaging apparatus according to this embodiment. Figure 2 is a right side view illustrating an example of the schematic configuration of an X-ray imaging apparatus according to this embodiment.

[0011] The longitudinal direction of the mounting surface 3S (left-right direction in Figure 1), which will be described later, is defined as the X direction, the short direction of the mounting surface 3S perpendicular to the longitudinal direction (left-right direction in Figure 2) is defined as the Y direction, and the direction perpendicular to the X and Y directions is defined as the Z direction. The XY plane is the horizontal plane. The Z direction is the height direction.

[0012] As shown in Figure 1, the X-ray imaging apparatus 1 includes a top plate 3 having a mounting surface 3S on which a subject M is placed. The top plate 3 is supported by a base 4 disposed on the floor. The mounting surface 3S has a shape along its longitudinal direction and a transverse direction intersecting the longitudinal direction.

[0013] The X-ray imaging apparatus 1 is equipped with an X-ray tube 5 on the underside of the top plate 3 for irradiating a subject M with X-rays. The X-ray imaging apparatus 1 is equipped with a collimator 13 attached to the X-ray tube 5. The collimator 13 restricts the X-rays irradiated from the X-ray tube 5 to a predetermined shape. An example of a predetermined shape is a cone shape, such as a pyramidal shape.

[0014] The X-ray imaging apparatus 1 includes an X-ray detection unit 7 positioned above the top plate 3, facing the X-ray tube 5.

[0015] As shown in Figure 2, the X-ray detection unit 7 includes an X-ray detector 8 that detects X-rays irradiated from the X-ray tube 5 and transmitted through the subject M, and outputs an X-ray detection signal. The X-ray detector 8 is positioned opposite the X-ray tube 5, with the top plate 3 in between. Examples of the X-ray detector 8 include a flat panel detector or an image intensifier.

[0016] As shown in FIG. 2, the X-ray detection unit 7 includes a crosshair illumination device 34. FIG. 3 is a diagram showing an example of a state in which the crosshair illumination device 34 irradiates the subject M placed on the mounting surface 3S of the X-ray imaging apparatus 1 according to the present embodiment with the light of the crosshair L. The crosshair illumination device 34 is an irradiation device that irradiates the surface of the subject M with visible light. The crosshair illumination device 34 irradiates visible light so that the region of the irradiated portion on the surface of the subject M irradiated with visible light has a shape in which the center coincides with the optical axes of the X-ray tube 5 and the X-ray detector 8 and a plurality of lines extend outward from the center. As shown in FIG. 3, the shape is, for example, the crosshair L. It is not limited to the crosshair L, and an asterisk or the like may be used. In FIG. 3, for easy understanding, the state in which the crosshair illumination device 34 irradiates the light of the crosshair L is schematically described.

[0017] The X-ray tube 5 and the collimator 13 are an example of the "irradiation unit" of the technology of the present disclosure. The X-ray detector 8 is an example of the "irradiation unit" of the technology of the present disclosure. The crosshair illumination device 34 is an example of the "irradiation unit" of the technology of the present disclosure.

[0018] The arrangement is not limited to disposing the X-ray tube 5 and the collimator 13 below the top plate 3 and the X-ray detector 8 above the top plate 3. The X-ray detector 8 may be disposed below the top plate 3 and the X-ray tube 5 and the collimator 13 may be disposed above the top plate 3.

[0019] As shown in FIG. 2, the X-ray imaging apparatus 1 includes a support column 9. The support column 9 extends in a direction (specifically, the Z direction) intersecting the top plate 3.

[0020] The base end portion 9B of the support column 9 is connected to the connection portion 10. The connection portion 10 is also connected to the top plate 3 and the X-ray tube 5. As described above, the collimator 13 is attached to the X-ray tube 5.

[0021] One end 11B of a branch portion 11 extending in the lateral direction of the top plate 3 is attached above the support column 9. The X-ray detection unit 7 is connected to the other end 11A of the branch portion 11. As described above, the X-ray detection unit 7 includes the X-ray detector 8 and the crosshair illumination device 34.

[0022] The X-ray imaging apparatus 1 includes an X-direction moving mechanism that moves a support column 9, an X-ray detection unit 7 (X-ray detector 8 and crosshair illumination device 34), an X-ray tube 5, and a collimator 13 along the X direction along a guide rail (not shown) provided on the top plate 3 and extending along the longitudinal direction of the placement surface 3S.

[0023] The X-ray imaging apparatus 1 includes a Y-direction moving mechanism that moves a support column 9, an X-ray detection unit 7 (X-ray detector 8 and crosshair illumination device 34), an X-ray tube 5, and a collimator 13 along the Y direction along a guide rail (not shown) provided on the top plate 3 and extending along the short-side direction of the placement surface 3S.

[0024] As shown in FIG. 2, a pulley 21, a wire 23, and a counterweight 25 are incorporated in the support column 9. The pulley 21 is incorporated in the upper end portion of the support column 9, and the wire 23 is wound around it. One end of the wire 23 is fixed to the branch portion 11, and the other end of the wire 23 is fixed to the counterweight 25. The weight of the counterweight 25 is designed to balance the total weight of the branch portion 11, the X-ray detection unit 7, and the X-ray shielding portion 19.

[0025] The pulley 21 can rotate in both forward and reverse directions, and the wire 23 can move in both directions in conjunction with the rotation of the pulley 21. In conjunction with the movement of the wire 23, the branch portion 11 connected to the wire 23 can move up and down along the support column 9. For example, when the pulley 21 is rotated in the forward direction shown in FIG. 2, the branch portion 11 moves upward along the support column 9.

[0026] The pulley 21, the wire 23, and the counterweight 25 cause the X-ray detection unit 7, specifically, the X-ray detector 8 and the crosshair illumination device 34, to move in the Z direction via the branch portion 11. The pulley 21, the wire 23, and the counterweight 25 constitute a Z-direction moving mechanism.

[0027] The X-direction moving mechanism, the Y-direction moving mechanism, and the Z-direction moving mechanism are an example of the "moving mechanism" of the technology of the present disclosure.

[0028] As shown in Figures 1 and 2, an operating handle 17 is provided at the tip 7A of the X-ray detection unit 7. The operator grasps the operating handle 17 and moves the X-ray detection unit 7 in the longitudinal direction of the top plate 3, the short direction of the top plate 3, and in directions perpendicular to the top plate 3 using the X-direction movement mechanism, the Y-direction movement mechanism, and the Z-direction movement mechanism.

[0029] An operation panel 15 is provided at the tip 7A of the X-ray detection unit 7. The operation panel 15 is equipped with controls for setting X-ray irradiation conditions or controls for X-ray imaging, and the operator can input instructions related to X-ray fluoroscopy by operating the operation panel 15. The operation panel 15 may be configured as a touch panel, a toggle switch, or a push-button switch, for example.

[0030] The control panel 15 and the control handle 17 can be installed in a position where they can be easily operated by the operator, and their placement is not limited to the tip of the X-ray detection unit 7.

[0031] An X-ray shielding section 19 is provided at the tip 7A of the X-ray detection unit 7, with one end attached to the X-ray detection unit 7 and the other end extending toward the mounting surface 3S. The X-ray shielding section 19 reduces the amount of X-ray exposure to the operator from the X-ray tube 5. The X-ray shielding section 19 is positioned between the operator S, who performs various tasks in close proximity to the X-ray imaging device 1, and the tabletop 3.

[0032] The X-ray shielding section 19 comprises a plurality of X-ray shielding plate-like members 27. The total length in the X direction and Z direction of the plurality of X-ray shielding plate-like members 27 is predetermined geometrically based on the X-ray irradiation site of the subject M, the distance between the irradiation site and the operator (standard body type), and the X direction and Z direction of the operator, so that X-rays scattered at the irradiation site do not enter the operator. In this embodiment, for example, there are 5 X-ray shielding plate-like members 27, but there may be 1 in total, or 2, 3, etc.

[0033] The X-ray shielding section 19 includes a support section 19A, one end of which is attached to the X-ray detection unit 7. As described above, the X-ray detection unit 7 includes an X-ray detector 8, so the X-ray shielding section 19 is attached to the X-ray detector 8 via the X-ray detection unit 7. A space 19K is formed on one end of a part of the X-ray shielding section 19, specifically on the support section 19A. The space 19K is formed on the X-ray detector 8 side of the tip of the X-ray shielding section 19 on the mounting surface 3S side. In other words, the area in which the space 19K is formed does not include the tip of the X-ray shielding section 19. A shielding-transmitting member 19D that shields X-rays but transmits visible light is attached to the space 19K. The length of the space 19K and the shielding-transmitting member 19D in the X direction is greater than or equal to the distance between the operator S's eyes (standard), and the length of the space 19K and the shielding-transmitting member 19D in the Z direction is greater than or equal to the distance between the operator S's eyes in the Z direction (standard). The standard distance between the eyes and the standard length of the eyes in the Z direction are predetermined. The space 19K and the shielding / transmitting member 19D are provided above the X-ray shielding section 19. Thus, the operator S can view and confirm the area of ​​the subject M that is irradiated with X-rays from above.

[0034] The X-ray shielding section 19 includes mounting fixtures 19B that attach one end of each of the multiple X-ray shielding plate-like members 27 to the other end of the support section 19A, such that the other end of each of the multiple X-ray shielding plate-like members 27 extends toward the mounting surface 3S of the top plate 3, and that the one end and the support section 19A are spaced apart. The other end of each of the multiple X-ray shielding plate-like members 27 is freely movable. Therefore, even with the X-ray shielding section 19, there is no further hindrance to placing the subject M on the mounting surface 3S. The support portion 19A and the mounting fixture 19B are examples of "mounting portions" in the technology of this disclosure.

[0035] The X-ray shielding portion 19 does not cover the space 19K of the support portion 19A, but includes an X-ray shielding body 19C that covers the region between one end of each of the multiple X-ray shielding plate-like members 27 and the support portion 19A.

[0036] Each of the multiple X-ray shielding plate-like members 27, the shielding-transmitting member 19D, and the X-ray shielding body 19C are formed of a material that shields (specifically absorbs) X-rays. Specifically, this material is a material in which the atomic nucleus contains a number of protons sufficient to absorb the energy of X-rays, and the same number of electrons surrounding it. Examples include lead (Pb) and barium (Ba).

[0037] Each X-ray shielding plate-like member 27 and X-ray shielding body 19C is made of a material that shields X-rays and visible light. Each X-ray shielding plate-like member 27 and X-ray shielding body 19C is a sheet-like shielding member made of lead or the like.

[0038] The shielding-transmitting member 19D is made of a material that shields X-rays but transmits visible light. The shielding-transmitting member 19D can be made of, for example, acrylic resin containing lead, glass containing lead, glass containing barium, or a polymer containing heavy elements such as barium or tungsten. In this embodiment, the shielding-transmitting member 19D is made of acrylic resin containing lead.

[0039] The shielding and transmission member 19D is harder than the X-ray shielding plate-like member 27.

[0040] (action) The operation of the X-ray imaging device 1 will now be explained. First, the operator S places the subject M in a supine position on the mounting surface 3S of the top plate 3.

[0041] Operator S operates the power button for the crosshair illumination device 34 on the control panel 15, irradiating the subject M with visible light in the form of a crosshair L from the crosshair illumination device 34. As described above, the center of the crosshair L coincides with the optical axis of the X-ray tube 5 and the X-ray detector 8, so Operator S uses the control handle 17 or the like to adjust the position of the imaging system so that the center of the crosshair L is positioned on the surface of the subject M that is to be X-ray fluoroscopyed.

[0042] Figure 4 shows an example of how operator S observes the light of the crosshairs L irradiated onto subject M through the shielding / transmitting member 19D.

[0043] When adjusting the position of the imaging system, operator S confirms the position of the crosshairs L and the subject M via the shielding / transmissive member 19D attached to space 19K, and confirms the positional relationship of the subject, such as the irradiation position of the X-rays onto the subject M or changes in the posture of the subject M.

[0044] Operator S confirms the positional relationship of the subject M through the shielding / transparency member 19D, and if Operator S determines that the center of the crosshair L is not located on the surface corresponding to the area of ​​the subject M to be X-ray fluoroscopy, Operator S uses the operating handle 17 to adjust the position of the imaging system so that the center of the crosshair L is located on the surface of the area of ​​the subject M to be X-ray fluoroscopy.

[0045] When operator S determines that the center of the crosshairs L is located on the surface of the subject M corresponding to the area to be X-ray fluoroscopy, operator S operates the X-ray fluoroscopy instruction button on the control panel 15. As a result, X-rays are irradiated from the X-ray tube 5 onto the subject M via the collimator 13. The X-rays that have passed through the subject M are detected by the X-ray detector 8. The X-ray detector 8 outputs an X-ray detection signal. An X-ray image is generated based on the X-ray detection signal.

[0046] When X-rays are irradiated onto the subject M, the X-rays are scattered. Some of the scattered X-rays are directed towards the operator S. However, the X-rays directed towards the operator S are shielded by the X-ray shielding unit 19 and do not enter the operator S. Therefore, the operator S is not exposed to scattered X-rays by the X-ray shielding unit 19.

[0047] When subject M is being X-ray fluoroscopyed, operator S can confirm the positional relationship of the subject through the shielding / transmissive member 19D. Therefore, if operator S confirms that subject M has moved during X-ray fluoroscopy, operator S can perform X-ray fluoroscopy again. Even in this case, the shielding / transmissive member 19D shields the X-rays, so operator S is not exposed to radiation.

[0048] (effect) As described above, in this embodiment, a shielding-transmitting member 19D that shields X-rays but transmits visible light is attached to the space 19K of the support portion 19A of the X-ray shielding portion 19. Therefore, this embodiment has the effect of allowing the operator S to easily visually confirm the positional relationship of the subject M through the shielding-transmitting member 19D when the subject M is subjected to X-ray fluoroscopy, and also prevents the operator S from being exposed to radiation.

[0049] In the above embodiment, the mounting fixture 19B is attached to the other end of the support portion 19A, with one end of each of the multiple X-ray shielding plate-like members 27 spaced apart from the support portion 19A. The X-ray shielding body 19C does not cover the space 19K of the support portion 19A, but covers the spaced-away area. Therefore, this embodiment has the effect of preventing the operator S from being exposed to scattered X-rays passing through the spaced-away area.

[0050] In the above embodiment, multiple X-ray shielding plate-like members 27 are arranged such that the other end of each extends toward the mounting surface 3S of the top plate 3. Therefore, in this embodiment, if any of the X-ray shielding plate-like members 27 deteriorate or are damaged, the X-ray shielding plate-like member 27 can be replaced individually, and it is not necessary to replace the entire X-ray shielding section 19, thus simplifying maintenance.

[0051] In the above embodiment, each of the multiple X-ray shielding plate-like members 27, the shielding and transmitting member 19D, and the X-ray shielding body 19C shields by absorbing X-rays instead of reflecting them. Therefore, the above embodiment has the effect of preventing reflected X-rays from scattering in unpredictable directions outside the geometrically defined range, thus preventing the operator S from being exposed to scattered X-rays.

[0052] In the above embodiment, the crosshair illumination device 34 irradiates visible light on the surface of the subject M, where the irradiated area has its center coincide with the optical axis of the X-ray tube 5 and the X-ray detector 8, and multiple lines extend outward from the center. Therefore, the above embodiment has the effect that the position of the crosshair L and the subject M can be easily confirmed, and the operator S can easily confirm whether the part of the subject M to be X-ray fluoroscopy is correctly positioned to be X-ray fluoroscopy.

[0053] In the above embodiment, the operator grasps the operating handle 17 and moves the X-ray detection unit 7 in the longitudinal direction of the top plate 3, the short direction of the top plate 3, and in a direction perpendicular to the top plate 3 using the X-direction movement mechanism, the Y-direction movement mechanism, and the Z-direction movement mechanism. Therefore, in this embodiment, if the part of the subject M to be X-ray fluoroscopy is not correctly positioned to be X-ray fluoroscopy, the position of the imaging system can be adjusted so that the part of the subject M to be X-ray fluoroscopy is correctly positioned to be X-ray fluoroscopy. Thus, this embodiment has the effect of enabling correct X-ray fluoroscopy of the subject M.

[0054] (modified version) In the above embodiment, operator S operates the X-ray fluoroscopy instruction button on the control panel 15. The technology of this disclosure is not limited thereto. For example, even when the X-ray imaging apparatus 1 is remotely controlled from a room other than the room in which the X-ray imaging apparatus 1 is located, the X-ray shielding unit 19 may also be provided. In this case, the moving mechanism may also be remotely controlled.

[0055] [Aspect] Those skilled in the art will understand that the above embodiment is a specific example of the following embodiments.

[0056] (Section 1) A top plate having a mounting surface on which the subject is placed, An irradiation unit that emits X-rays, A detection unit for detecting X-rays irradiated from the irradiation unit and transmitted through the subject, An X-ray shielding portion, one end of which is attached to the irradiation unit or the detection unit, and the other end of which extends toward the aforementioned mounting surface, A moving mechanism for moving the irradiation unit and the detection unit, An X-ray imaging apparatus comprising, A part of the aforementioned X-ray shielding portion, in which a space is formed on one end side, An X-ray imaging apparatus is provided, in which a shielding-transmitting member that shields X-rays but transmits visible light is installed in the aforementioned space.

[0057] The X-ray imaging apparatus described in paragraph 1 has the effect of allowing the operator to easily visually confirm the positional relationship of the subject through a shielding / transmission member when the subject is being X-ray fluoroscopyed, while also preventing the operator from being exposed to radiation.

[0058] (Section 2) The shielding and transmission member is harder than the X-ray shielding portion. The X-ray imaging apparatus according to claim 1.

[0059] (Section 3) The X-ray shielding portion further comprises a mounting portion for attaching one end of the X-ray shielding portion to the irradiation portion or the detection portion, The mounting portion comprises a support portion and a mounting device for attaching one end of the X-ray shielding portion to the support portion, such that the one end and the support portion are spaced apart. The X-ray shielding portion further comprises an X-ray shielding body that does not cover the space but covers the separated regions. The X-ray imaging apparatus according to claim 1 or claim 2.

[0060] The X-ray imaging apparatus described in paragraph 3 has the effect of preventing the operator from being exposed to scattered X-rays as they pass through the separated regions.

[0061] (Section 4) The X-ray shielding portion further comprises a mounting portion for attaching one end of the X-ray shielding portion to the irradiation portion or the detection portion, The X-ray shielding section comprises a plurality of X-ray shielding plate-like members, The mounting portion attaches one end of each of the plurality of X-ray shielding plate-like members to the irradiation unit or the detection unit such that the other end of each of the plurality of X-ray shielding plate-like members extends toward the mounting surface of the top plate. An X-ray imaging apparatus according to any one of claims 1 to 3.

[0062] According to the X-ray imaging apparatus described in paragraph 4, if any of the X-ray shielding plate-like members deteriorate or break, the X-ray shielding plate-like member can be replaced individually, eliminating the need to replace the entire X-ray shielding section, thus simplifying maintenance.

[0063] (Section 5) The shielding and transmitting member and the shielding and transmitting member are composed of a member that absorbs X-rays. An X-ray imaging apparatus according to any one of claims 1 to 4.

[0064] According to the X-ray imaging apparatus described in paragraph 5, the reflected X-rays are scattered in unpredictable directions outside the geometrically defined range, thus preventing the operator S from being exposed to scattered X-rays.

[0065] (Section 6) An irradiation unit for irradiating the surface of the subject with visible light, further comprising the irradiation unit for irradiating with visible light such that the irradiated area on the surface of the subject irradiated with visible light has a shape in which the center coincides with the optical axis of the irradiation unit and the detection unit and a plurality of lines extend outward from the center. An X-ray imaging apparatus according to any one of claims 1 to 5.

[0066] The X-ray imaging apparatus described in paragraph 6 has the effect of allowing the operator to easily confirm whether the part of the subject to be X-ray fluoroscopy is correctly positioned at the X-ray fluoroscopy location.

[0067] (Section 7) The mounting surface has a shape along the longitudinal direction and the short direction intersecting the longitudinal direction. The moving mechanism is configured to allow the irradiation unit and the detection unit to move along at least one of the longitudinal direction, the short direction, and a direction intersecting each of the longitudinal direction and the short direction. An X-ray imaging apparatus according to any one of claims 1 to 6.

[0068] The X-ray imaging device described in paragraph 7 has the effect of enabling accurate X-ray fluoroscopic imaging of the subject.

[0069] (Section 8) One of the irradiation unit and the detection unit is located in the first region on the side of the mounting surface described above where the specimen is placed. The other of the irradiation unit and the detection unit is located in a second region opposite to the first region with respect to the mounting surface described above. One end of the X-ray shielding portion is attached to either the irradiation portion or the detection portion. An X-ray imaging apparatus according to any one of claims 1 to 7. [Explanation of Symbols]

[0070] 1 X-ray imaging device 3 Top plate 3S mounting surface 5 X-ray tube 13 Collimator 8 X-ray detector 34 Crosshair illumination device 21 Pulley 23 wires 25 counterweights 19 X-ray shielding part 19A Support part 19K space 19D Shielding and Transmitting Member 19B Mounting hardware 19C X-ray shield 27 X-ray shielding plate-like member

Claims

1. A top plate having a mounting surface on which the subject is placed, An irradiation unit that emits X-rays, A detection unit for detecting X-rays irradiated from the irradiation unit and transmitted through the subject, An X-ray shielding portion, one end of which is attached to the irradiation unit or the detection unit, and the other end of which extends toward the aforementioned mounting surface, A moving mechanism for moving the irradiation unit and the detection unit, An X-ray imaging apparatus comprising, A part of the aforementioned X-ray shielding portion, with a space formed on one end side, An X-ray imaging apparatus is provided, in which a shielding-transmitting member that shields X-rays but transmits visible light is installed in the aforementioned space.

2. The shielding and transmission member is harder than the X-ray shielding portion. The X-ray imaging apparatus according to claim 1.

3. The X-ray shielding portion further comprises a mounting portion for attaching one end of the X-ray shielding portion to the irradiation portion or the detection portion, The mounting portion comprises a support portion and a mounting device for attaching one end of the X-ray shielding portion to the support portion, such that the one end and the support portion are spaced apart. The X-ray shielding portion further comprises an X-ray shielding body that does not cover the space but covers the separated regions. The X-ray imaging apparatus according to claim 1.

4. The X-ray shielding portion further comprises a mounting portion for attaching one end of the X-ray shielding portion to the irradiation portion or the detection portion, The X-ray shielding section comprises a plurality of X-ray shielding plate-like members, The mounting portion attaches one end of each of the plurality of X-ray shielding plate-like members to the irradiation unit or the detection unit such that the other end of each of the plurality of X-ray shielding plate-like members extends toward the mounting surface of the top plate. The X-ray imaging apparatus according to claim 1.

5. The shielding and transmitting member and the shielding and transmitting member are composed of a member that absorbs X-rays. The X-ray imaging apparatus according to claim 1.

6. An irradiation unit for irradiating the surface of the subject with visible light, further comprising the irradiation unit for irradiating with visible light such that the irradiated area on the surface of the subject irradiated with visible light has a shape in which the center coincides with the optical axis of the irradiation unit and the detection unit and a plurality of lines extend outward from the center. The X-ray imaging apparatus according to claim 1.

7. The mounting surface has a shape along the longitudinal direction and the short direction intersecting the longitudinal direction. The moving mechanism is configured to allow the irradiation unit and the detection unit to move along at least one of the longitudinal direction, the short direction, and a direction intersecting each of the longitudinal direction and the short direction. The X-ray imaging apparatus according to claim 1.

8. One of the irradiation unit and the detection unit is located in the first region on the side of the mounting surface described above where the specimen is placed. The other of the irradiation unit and the detection unit is located in a second region opposite to the first region with respect to the mounting surface described above. One end of the X-ray shielding portion is attached to either the irradiation portion or the detection portion. The X-ray imaging apparatus according to claim 1.

Images