CN212521786U - Beam light assembly and X-ray source assembly - Google Patents

Abstract

The utility model provides a light-splitting component and an X-ray source component, wherein the light-splitting component comprises a light splitter, a light filter and a shell, the light splitter and the light filter are arranged in the shell, and the shell is provided with an incident end and an emergent port of X-rays; the beam splitter is arranged between the X-ray incident end and the emergent end of the shell; the optical filter is arranged between the incident port and the light beam splitter, or the optical filter is arranged between the emergent end and the light beam splitter. Utilize the embodiment of the utility model provides a beam light subassembly, the noise interference of the human tissue image that can effectual reduction X ray projection obtained for the projection image is more accurate.

Description

Beam light assembly and X-ray source assembly

Technical Field

The embodiment of the utility model provides a relate to the X ray field, especially relate to a beam light subassembly and X ray source subassembly.

Background

In medical image detection, various rays are increasingly used for examining human tissues, and when various rays such as X-rays (roentgen rays) are used for examining human tissue structures, images with different black and white colors can be formed on a screen or an X-ray film. When the existing X-ray imaging device is used for imaging human tissues, due to different thicknesses of different parts of a human body, projected images obtained by X-rays emitted by an X-ray source penetrating through different parts of the human body are high in noise and poor in image quality.

SUMMERY OF THE UTILITY MODEL

In view of this, one of the technical problems solved by the present invention is to provide a beam splitter and an X-ray source assembly, which can avoid the problem of high X-ray projection noise and poor image quality due to different thicknesses of different parts of the human body.

The embodiment of the utility model provides a beam splitting optical assembly, include: a beam splitter, at least one filter, and a housing;

the beam splitter and the optical filter are arranged in the shell, and the shell comprises an X-ray incidence end and an X-ray emergence end;

the beam splitter is arranged between the X-ray incidence end and the X-ray emergence end;

the filter is arranged between the X-ray incidence end and the beam splitter; alternatively, the filter is disposed between the X-ray exit end and the beam splitter.

Optionally, in an embodiment of the present invention, the optical filter is at least two optical filters corresponding to different irradiation object cross sections.

Optionally, in an embodiment of the present invention, the beam splitting module further includes a base, the base is used to fix positions of the at least two filters corresponding to different irradiation object cross sections in the housing, and the switching of the filters corresponding to different irradiation object cross sections is performed through the base.

Optionally, in an embodiment of the present invention, the base switches the filters corresponding to different irradiation object cross sections in a push-pull manner.

Optionally, in an embodiment of the present invention, the filter is a filter with different filter regions corresponding to different cross sections of the irradiation object

Optionally, in an embodiment of the present invention, the optical filter is made of a light-impermeable heavy metal compound or is composed of a light-transmitting matrix and heavy metal compound particles doped in the light-transmitting matrix.

The utility model also discloses an X ray source subassembly, include: the device comprises a bulb tube, a beam light device and at least one optical filter;

the optical filter is positioned between the bulb tube and the beam light device, or the optical filter is positioned on one side of the optical filter, which is far away from the bulb tube;

the filter and the beam splitter are both located in the path of the X-ray beam generated by the bulb tube.

Optionally, in an embodiment of the present invention, the filter is a filter having different filter regions corresponding to different irradiation object cross sections.

Optionally, in an embodiment of the present invention relating to an X-ray source assembly, the filter comprises at least two filters corresponding to different irradiation subject cross-sections.

Optionally, in an embodiment of the present invention, the X-ray source assembly further includes a base, the base is used to fix positions of the at least two filters corresponding to different irradiation object cross sections, and the switching of the filters corresponding to different irradiation object cross sections is performed through the base.

Optionally, in an embodiment of the present invention, the base performs the switching of the filters corresponding to different irradiation object cross sections by a push-pull method.

Optionally, in an embodiment of the present invention related to an X-ray source assembly, the filter is made of a light-impermeable heavy metal compound, or is composed of a light-permeable matrix and heavy metal compound particles doped in the light-permeable matrix.

Optionally, in an embodiment of the present invention, in an X-ray source assembly, the X-ray source assembly further includes a mounting structure, the filter is fixed between the beam splitter and the bulb through the mounting structure, or the filter is fixed on a side of the beam splitter away from the bulb through the mounting structure.

Optionally, in an embodiment of the present invention, the X-ray source assembly comprises at least two filters corresponding to different irradiation subject cross-sections.

Optionally, in an embodiment of the present invention, the mounting structure is located between the beam splitter and the bulb, the mounting structure has a first end that matches an output end of the bulb and/or the mounting structure has a second end that matches an input end of the beam splitter, or the mounting structure has no connection with the bulb and/or the beam splitter.

Optionally, in an embodiment of the present invention directed to an X-ray source assembly, a thickness of the mounting structure in the X-ray beam path is less than a predetermined threshold.

Optionally, in an embodiment of the present invention, the mounting structure is located at a side of the beam splitter away from the bulb, the mounting structure has a third end matching an output end of the beam splitter or the mounting structure has no connection with the beam splitter.

The embodiment of the utility model provides a beam-splitting optical assembly, which comprises a beam splitter, an optical filter and a shell, wherein the beam splitter and the optical filter are arranged in the shell, and the shell is provided with an incident end and an emergent end of X rays; the light-splitting device is arranged between the X-ray incident end and the emergent end of the shell, the optical filter is arranged between the X-ray incident end and the light-splitting device, or the optical filter is arranged between the X-ray emergent end of the shell and the light-splitting device. The embodiment of the utility model provides an add the filter in a bundle optical subassembly for compensate the influence of human different thickness to the X ray image quality, utilize the embodiment of the utility model provides a bundle optical subassembly can the noise interference of the human tissue image that effectual reduction X ray direct projection obtained, and make the projection image more clear accurate.

Drawings

Fig. 1 is a schematic structural diagram of a beam-combining unit according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an optical filter according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of another optical filter according to an embodiment of the present invention

FIG. 4 is a schematic diagram of an X-ray projected image of body tissue according to an exemplary embodiment of the present invention;

fig. 5 is a schematic structural diagram of a base and at least two filters according to this embodiment;

fig. 6 is a schematic structural diagram of an X-ray source assembly according to an embodiment of the present invention.

Detailed Description

The embodiment of the present invention will be further described with reference to the accompanying drawings.

The first embodiment,

Fig. 1 is a schematic structural diagram of a beam-combining unit according to an embodiment of the present invention; as shown in fig. 1, the present embodiment provides a schematic structural diagram of a beam splitting assembly, including: a beam splitter 101, at least one filter 102, and a housing 103;

wherein the beam light 101 and the filter 102 are disposed in a housing 103, the housing 103 including an X-ray incident end 104 and an X-ray exit end 105;

the beam splitter 101 is disposed between the X-ray incident end and the X-ray exit end of the housing 103;

the filter 102 is disposed between the X-ray incident end of the housing 103 and the beam splitter; alternatively, the filter 102 is provided between the X-ray exit end 104 of the housing 103 and the beam splitter 101.

Here, the beam splitter 101 will be described with respect to a beam splitting component of X-rays:

in this embodiment, the beam splitter includes at least two beam splitter blades, and a gap between the at least two beam splitter blades forms a light passing hole through which the X-rays can pass.

The embodiment of the utility model provides an in, two at least light blade can alternate segregation or gather together the removal to adjust the size of two at least light beam ware blade formation light-passing holes, thereby adjust the projection area size that X ray projected on waiting to detect the object, consequently, two at least light blade all can use the material that has shielding effect to X ray to make.

In one implementation, the housing 103 is further provided with a control structure connected to the at least two bundled optical blades, and the position of the at least two bundled optical blades is moved by the control structure, so as to adjust the size of the light through hole formed by the at least two bundled optical blades.

When using X ray to detect, because it has the size to wait to detect the object, and X ray also is a ray to the biological tissue has certain injury, need to reduce the projection area that X ray projected on waiting to detect the object as far as possible, avoid unnecessary X ray dose to treat the damage of detecting the object (for example to human tissue), at this moment, can also set up the control structure who is used for adjusting a light 101 position on the casing, control structure can be through adjusting a light 101 position, adjust the size of light passing hole on the light ware, thereby adjust the size of the projection area of X ray.

For the optical filter 102 in the beam splitting module provided by the present invention, two specific examples are listed here for explanation:

optionally, in a first example of the present invention, the optical filter is at least two optical filters corresponding to different irradiation object cross sections.

When using X-ray projection to obtain a projection image of an object to be detected, as shown in fig. 2, fig. 2 is a schematic diagram of an X-ray projection human tissue image listed in the embodiment of the present invention, the object to be detected is human tissue, as shown in fig. 2, 201 represents the cross-sectional shape of the head of a human body, 202 represents the cross-sectional shape of the chest of a human body, 203 represents the cross-sectional shape of the trunk of a human body, and the thicknesses of the head, the chest and other trunks of a human body are different, if only using one filter to adjust the X-ray, the obtained projection image can not reflect the accurate image information of the object to be detected with different thicknesses, therefore, in the embodiment of the present invention, three filters with different cross-sections, such as the filter 204, the filter 205 and the filter 206, can be set according to the thicknesses of different areas of the object to, adjusting the projected intensity of the X-ray beam with the filter 204; while detecting the chest 202 of the human body, the projection intensity of the X-ray beam is adjusted by the optical filter 205; when the human body trunk 203 is detected, the projection intensity of the X-ray beam is adjusted by using the optical filter 206, so that the projection image obtained after the X-ray beam projects the objects to be detected with different thicknesses is more accurate.

The cross sections of the three filters, namely the filter 204, the filter 205 and the filter 206, are thin in the middle and thick on two sides, the curvature of the curved surface of each filter is a fixed value, the curvatures of the curved surfaces of the three filters are different, the filters with different curvatures correspond to objects to be detected with different thicknesses, and a user can adjust the filter corresponding to the current object to be detected according to the different thicknesses of the objects to be detected, so that an X-ray beam has a better projection effect through different objects to be detected, and the quality of a projected image is improved.

Alternatively, in the second example of the present invention, the filter 102 may also be a filter with different filter regions, and the different filter regions correspond to different irradiation object cross sections.

When the human body tissue image is obtained by projecting the human body by using X-rays, because the distances from the X-ray source to different areas of the object to be detected are different, and the different incident angles of the X-ray when the X-ray beam projects to the object to be detected can cause the different intensities of the X-ray projected to different positions of the object to be detected, so that the projected image obtained contains large noise information and has poor image quality, and the filter is set to be thin in the middle and thick at the edge, the intensity and the incident angle of the X-ray in different projection areas can be adjusted, so that the projection image of the area to be detected which is far away from the X-ray is clearer, the embodiment of the utility model provides an in, set the filter to the filter that has different filter areas, utilize different filter areas to adjust the intensity that X ray projection to wait to detect the target for the projected image that obtains is more clear.

In one implementation of the present invention, the filter 102 is a filter including at least two different filter regions, each filter region in the at least two filter regions is connected to an adjacent filter region, and each filter region has a different X-ray compensation amount. An example is given here to illustrate the structure of the optical filter 102 of the present invention including at least two different filter regions, as shown in fig. 3, fig. 3 is an optical filter 30 provided by an embodiment of the present invention, the optical filter 30 includes three filter regions, which are a filter region 301, a filter region 302 and a filter region 303, respectively, the centers of curvature of the curved surfaces of the filter region 301, the filter region 302 and the filter region 303 are located on the same straight line or coincide with each other, wherein the curvature of the curved surface of the filter region 301 is a first curvature for detecting the head of a human body; the curved surface curvature in filter area 302 is the second curvature, and the curved surface curvature in filter area 301 of filter is the third curvature, and wherein second curvature and third curvature can be the same, also can be different, and when second curvature and third curvature are the same, filter area 302 and filter area 303 are used for detecting the position outside human head, such as the chest, and when second curvature and third curvature are different, filter area 303 can be used for detecting other positions except human head and chest, and is optional, and the structure of filter and its corresponding X ray compensation volume can set up according to the measuring needs, the utility model discloses do not restrict to this. It should be noted that the curvature of the curved surface is used to indicate the degree of curvature of the curved surface, for example, the curvature of the curved surface may be an average of main curvatures of a plurality of points of the curved surface, or may be an average of gaussian curvatures of a plurality of points, which is only exemplary and not intended to limit the present invention.

Optionally, in an implementation manner of the present invention, different filter regions of an optical filter may also have the same curvature, as shown in fig. 4, fig. 4 is a schematic diagram of a structure of an optical filter provided in this embodiment, where the curvature of the filter region 401, the curvature of the filter region 402, and the curvature of the filter region 403 are all the same, but the exposed volumes of the filter region 401, the filter region 402, and the filter region 403 in different X-ray irradiation fields may be different, so that the filter region 401, the filter region 402, and the filter region 403 have different X-ray compensation amounts. In the present invention, the present invention relates to a structure of an optical filter, which is only exemplary and not representative of the present invention, and the present invention is not limited thereto, and in the implementation of the present invention, the curved surface of the optical filter can be set to have one or more different curvatures of the filter area, or have one or more different X-ray compensation filter areas of the filter area, and the present invention is not limited thereto.

Optionally, in the embodiment of the present invention, the beam splitting module further includes a base, the base is used to fix the positions of the at least two filters corresponding to different irradiation object cross sections in the housing, and the switching of the filters corresponding to different irradiation object cross sections is performed through the base.

The base can switch the optical filters corresponding to different irradiation object cross sections in a push-pull mode.

The utility model discloses an among the implementation, can also set up open structure on the casing, can pass through the open structure on the casing with the base and pull out the casing, when needs change the light filter and load, pull out the base through open structure, change the light filter of fixing on the base and load, change the back that finishes, open structure on the rethread casing pushes the casing with the base for base and casing relatively fixed accomplish the switching of light filter. The opening structure is arranged on the shell, so that the base can be pulled out of the opening structure, the filter is simple to replace, the operation is easy, and the X-ray assembly is convenient to inspect and maintain.

In addition, because the X-ray is an invisible light, when the X-ray is used to project a human body, the X-ray can have a certain killing effect on human body cells, therefore, when the X-ray is used to detect human body tissues, the light field output by the X-ray needs to be simulated, generally, the X-ray imaging system comprises a light field simulation unit, the light field simulation unit comprises at least one visible light generation mechanism, the light field simulation unit is positioned on one side of the beam splitter on the path of the X-ray beam, which is close to the bulb tube, so as to simulate the light path of the X-ray beam by using the generated visible light, when the beam splitter is adopted, the light filter can shield the visible light, so that when the light field simulation is performed, the base can be pulled out of the shell, so that the visible light can pass through, and the light field simulation is realized.

The above-mentioned mode is only an implementation mode about switching the optical filter of this embodiment, in an embodiment of the utility model, can also have other setting modes, for example can set the base to a disc base, be provided with a plurality of draw-in grooves that are used for fixed different model filters on the disc base, disc base eccentric settings in inside the casing, be provided with the control structure that can rotate the disc on the casing, when needing to change the optical filter, through this control structure rotation disc, adjust the relative position of the optical filter of fixing on the disc and casing, make required optical filter be located the X ray route, can accomplish the switching of optical filter, of course, here is only the switching mode of the different optical filters of exemplary explanation, and does not represent the utility model is limited to this. Similarly, to facilitate the simulation of the light field, a vacant space not carrying the filter may be provided on the disk-shaped base.

The utility model discloses an among the implementation, as shown in fig. 5, fig. 5 is the structure schematic diagram of a base and two at least filters that this embodiment provided, including the base 501 of drawer type to and the filter of the three different cross sectional shape of loading on base 501, to the different thickness demands that shine the object, can adjust drawer type base 501's position through the mode of push-and-pull, make required filter be located the X ray route, to the different object of waiting to detect, use and wait to detect the filter that the object matches, improve the image definition that X ray bundle projection imaged. Similarly, to facilitate the simulation of the light field, a void may be provided in the drawer-type base, which does not house the filter.

The utility model discloses an among the implementation, can be provided with open structure or draw-in groove on the position of connecting on filter and the base, the filter can set up the open structure department at the base, and the filter passes through draw-in groove and base relatively fixed to when the filter takes place to damage, maintain and change the filter conveniently. Of course, the connection relationship between the filter and the base is only illustrated by way of example, and the present invention is not limited thereto.

In the embodiment of the present invention, the optical filter is made of opaque heavy metal compound, or made of a transparent substrate and heavy metal compound particles doped in the transparent substrate, and the transparent substrate is adopted to facilitate the light field simulation.

The beam light assembly disclosed in this embodiment includes a beam splitter, a filter, and a housing. A light ware and filter set up in the casing, there are X ray incident end and X ray outgoing end on the casing, a light ware sets up between casing X ray incident end and outgoing end, the filter sets up between incident end and a light ware, or the filter sets up between exit port and a light ware, utilize the light subassembly of a bundle that this embodiment provided, can adjust the projection area of X ray through a light ware, adjust the intensity of X ray projection to waiting to detect the object through the different filter district distributions on the filter, make the projected image through this light subassembly projection more clear. Example II,

The present invention further provides an X-ray source assembly, as shown in fig. 6, fig. 6 is a schematic structural diagram of an X-ray source assembly provided in an embodiment of the present invention, including a bulb 601, a beam splitter 602, and at least one filter 603;

the filter 603 is located between the beam splitter 602 and the bulb 601, or the filter 603 is located on the side of the beam splitter 602 away from the bulb 601;

both filter 603 and beam splitter 602 are located in the path of the X-ray beam generated by the bulb.

Optionally, in an implementation manner of the present embodiment regarding the X-ray source assembly, the filter is a filter having different filter regions, and the different filter regions correspond to different irradiation object cross sections.

Optionally, in an implementation manner of the present embodiment regarding the X-ray source assembly, the filter includes at least two filters corresponding to different irradiation object cross sections.

Optionally, in an implementation manner of this embodiment regarding the X-ray source assembly, the X-ray source assembly further includes a base, where the base is used to fix positions of the at least two filters corresponding to different irradiation object cross sections, and the base is used to switch the filters corresponding to different irradiation object cross sections.

Optionally, in an implementation manner of the present embodiment regarding the X-ray source assembly, the base performs switching of the filters corresponding to different irradiation object cross sections in a push-pull manner.

Here, an example is given to describe the setting mode of the base, the base may be an L-shaped drawer type base, a slot adapted to the shape of the optical filter is provided on the base, the optical filter may be fixed on the base through the slot, when the optical filter corresponding to the irradiation object provided on the base needs to be changed due to different irradiation, the L-shaped base is pushed and pulled, the position of the base relative to the ball tube is moved, so that the optical filter is located on the path of the X-ray beam, thereby completing the change of the different optical filters, of course, only one mode in this embodiment is described here as switching the different optical filters, other setting types of bases may be used to switch the optical filter, for example, the base may be set as a disc-shaped base, a plurality of slots for fixing the different types of optical filters are provided on the disc-shaped base, and the irradiation field working area of the eccentric X-ray source of the disc-shaped, when needs are changed the light filter, rotate the disc through this control structure, adjust the relative position who fixes light filter and installation casing on the disc, make the light filter be located the route of X ray bundle, can accomplish the switching of light filter, of course, technical personnel in the art can also design the light filter switching mode of other forms according to actual conditions, the utility model discloses do not limit to this.

Optionally, in one implementation of this embodiment regarding the X-ray source assembly, the filter is made of opaque heavy metal compound, or is composed of a light-transmitting matrix and heavy metal compound particles doped in the light-transmitting matrix.

Optionally, in an implementation manner of the present embodiment regarding the X-ray source assembly, the X-ray source assembly further includes a mounting structure 604, and the filter 603 is fixed between the beam splitter 602 and the bulb 601 through the mounting structure 604, or the filter 603 is fixed on a side of the beam splitter 602 away from the bulb 601 through the mounting structure 604.

Optionally, in one implementation of the present embodiment with respect to an X-ray source assembly, the mounting structure 604 is positioned between the beam splitter 602 and the bulb 601, the mounting structure 604 has a first end that mates with an output end of the bulb and/or the mounting structure 604 has a second end that mates with an input end of the beam splitter 602 or the mounting structure 604 is in a non-connected relationship with the bulb 601 and/or the beam splitter 602.

Optionally, in an implementation manner of the present embodiment regarding the X-ray source assembly, a thickness of the mounting structure in the X-ray beam path is smaller than a preset threshold.

In an X-ray imaging system, a bulb tube is generally used as a generation source of X-rays, and an existing device is generally directly connected with a beam splitter through the bulb tube to perform projection imaging on an object to be detected, but because different areas to be detected on the object to be detected have different distances from the bulb tube, the intensities of the X-rays projected to different positions of the object to be detected are different, and the projection angles of the X-rays at different positions of the object to be detected are different, so that the final X-ray imaging image quality is poor and the noise is high. Under the prerequisite that does not change current X ray imaging system, utilize the embodiment of the utility model provides an X ray source subassembly when adjusting the X ray intensity and the incident angle that the bulb produced for the image noise of waiting to detect the object is few, the high quality, and the formation of image is clear.

Optionally, in an implementation manner of this embodiment, when the mounting structure 604 is located on a side of the beam splitter 602 away from the bulb 601, the mounting structure 604 has a third end matching an output end of the beam splitter 602 or there is no connection between the mounting structure 602 and the beam splitter 602.

For example, in the first implementation manner of the present invention, the mounting structure 604 may be a housing, a cavity for accommodating the optical filter is formed inside the housing, a connecting structure matching with the optical filter is disposed on the cavity inside the housing, the connecting structure may be a slot or other connecting structures, and the optical filter is fixed inside the housing through the connecting structure; the shell is fixed between the bulb tube and the beam splitter, and the clamping groove in the installation shell is located on the path of the X-ray beam, so that the optical filter fixed on the clamping groove is located on the path of the X-ray beam generated by the bulb tube, and the projection intensity of the X-ray is adjusted by the optical filter.

When the shell is arranged between the beam splitter 602 and the bulb 601, the shell is provided with a first end matched with the output end of the bulb 601, and/or the shell is provided with a second end matched with the input end of the beam splitter 602 or the shell is provided with a non-connection relation with the bulb 601 and/or the beam splitter 602.

When the housing is located on the side of the beam splitter 602 away from the bulb 601, the housing has a third end that matches the output end of the beam splitter 602 or there is no connection between the housing and the beam splitter 602.

The X-ray source assembly provided by the embodiment comprises a bulb tube, a filter and a beam light device, wherein the filter is positioned between the bulb tube and the beam light device, or the filter is positioned on one side, away from the bulb tube, of the beam light device.

In the embodiments of the present application, the description with reference to the drawings is made. Certain embodiments, however, may be practiced without one or more of these specific details, or in conjunction with other known methods and structures. In the previous descriptions, numerous specific details are set forth, such as specific structures, dimensions, processes, etc., in order to provide a thorough understanding of the present invention. Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, configuration, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearance of the phrase "in one embodiment" in various places throughout this specification is not necessarily referring to the same example. Furthermore, the particular features, structures, configurations, or characteristics may be combined in any suitable manner in one or more embodiments.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (14)

1. A beam combining assembly, comprising: a beam splitter, at least one filter, and a housing;

the beam splitter and the optical filter are arranged in the shell, and the shell comprises an X-ray incidence end and an X-ray emergence end;

the beam splitter is arranged between the X-ray incidence end and the X-ray emergence end;

the filter is arranged between the X-ray incidence end and the beam splitter; alternatively, the first and second electrodes may be,

the filter is arranged between the X-ray emergent end and the beam splitter.

2. The beam optical assembly of claim 1 wherein the filters are at least two filters corresponding to different cross-sections of the object being illuminated.

3. The beam light assembly of claim 2 further comprising a mount for fixing the position of the at least two filters corresponding to different irradiation target cross-sections in the housing, the switching of the filters corresponding to different irradiation target cross-sections being performed by the mount.

4. The beam optical assembly of claim 3 wherein the base switches the filters corresponding to different irradiation target cross-sections by pushing or pulling.

5. The beam optical assembly of claim 1, wherein the filter is a filter having different filter regions corresponding to different cross-sections of the object to be irradiated.

6. An X-ray source assembly, comprising: the device comprises a bulb tube, a beam light device and at least one optical filter;

the optical filter is positioned between the bulb tube and the beam splitter, or the optical filter is positioned on one side of the beam splitter, which is far away from the bulb tube;

the filter and the beam splitter are both located in the path of the X-ray beam generated by the bulb tube.

7. The X-ray source assembly of claim 6, wherein the filter is a filter having different filter regions corresponding to different irradiation subject cross-sections.

8. The X-ray source assembly of claim 6, wherein the filters comprise at least two filters corresponding to different irradiation subject cross-sections.

9. The X-ray source assembly of claim 8, further comprising a base for fixing the position of the at least two filters corresponding to different irradiation subject cross-sections, the switching of the filters corresponding to different irradiation subject cross-sections being performed by the base.

10. The X-ray source assembly of claim 9, wherein the base switches the filters corresponding to different irradiation subject cross-sections by pushing and pulling.

11. The X-ray source assembly of claim 6, further comprising a mounting structure, wherein the filter is secured between the beam splitter and the bulb via the mounting structure, or wherein the filter is secured to a side of the beam splitter away from the bulb via the mounting structure.

12. The X-ray source assembly of claim 11, wherein the mounting structure is positioned between the beam splitter and the bulb, the mounting structure having a first end that mates with an output end of the bulb and/or the mounting structure having a second end that mates with an input end of the beam splitter or the mounting structure being in a non-connected relationship with the bulb and/or the beam splitter.

13. The X-ray source assembly of claim 12, wherein a thickness of the mounting structure in an X-ray beam path is less than a preset threshold.

14. The X-ray source assembly of claim 11, wherein the mounting structure is located on a side of the beam of light remote from the bulb, the mounting structure having a third end that mates with an output end of the beam of light or the mounting structure being free of a connection to the beam of light.

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