X-ray collimator, medical x-ray emitting device, and medical imaging apparatus
By installing a radiation sensor in the second shading part of the X-ray collimator and coordinating the adjustment of the shading part opening, the problems of sensor installation position affecting detection error and obstructing the light path are solved, thus achieving a balance between the accuracy of radiation detection and the imaging quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SIEMENS SHANGHAI MEDICAL EQUIP LTD
- Filing Date
- 2025-08-11
- Publication Date
- 2026-07-14
AI Technical Summary
In existing technologies, it is difficult to balance the accuracy and imaging quality of X-ray radiation dose detection. Inappropriate sensor installation positions can lead to detection errors or obstruction of the light path, affecting imaging.
A radiation sensor is installed on the side of the second shading part of the X-ray collimator facing the X-ray source. By limiting the opening relationship between the first and second shading parts, the sensor continuously receives X-rays that have not been attenuated by the human body. The sensor is located outside the second light-transmitting window to avoid blocking the light path. The opening of the shading part is adjusted in coordination by a drive component.
It achieves a balance between the accuracy of radiation detection and the quality of imaging. The sensor can accurately reflect the radiation dose without obstructing the light path, thus improving the accuracy of radiation monitoring and the integrity of imaging.
Smart Images
Figure CN224484027U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical imaging equipment technology, specifically relating to an X-ray collimator, a medical X-ray emitting device, and medical imaging equipment. Background Technology
[0002] X-ray machines, while providing medical imaging, also emit radiation. If the radiation dose is not controlled within a safe range, it may cause iatrogenic harm to the user. Therefore, it is necessary to monitor the radiation dose of X-rays. Current technology generally uses sensors to directly detect the radiation dose. However, the installation position of the sensor has a crucial impact on the accuracy of radiation detection and the quality of medical imaging. An improper sensor installation position can lead to large detection errors or obstruct the X-ray path, thus affecting image quality. Therefore, there is an urgent need for a sensor layout scheme that can balance image quality and radiation detection accuracy. Utility Model Content
[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an X-ray collimator, a medical X-ray emitting device, and a medical imaging equipment that can improve the accuracy of radiation detection while ensuring imaging quality.
[0004] To achieve the above and other related objectives, this utility model provides an X-ray collimator, comprising:
[0005] Mounting carrier for installation at X-ray sources; and
[0006] Located on the mounting carrier:
[0007] A first light-transmitting window formed by multiple first light-blocking parts;
[0008] A second light-transmitting window formed by multiple second light-blocking parts;
[0009] When the mounting carrier is installed at the X-ray source, the first light-transmitting window is located between the X-ray source and the second light-transmitting window;
[0010] At least one of the second light-shielding parts has a detection module on the side facing the first light-transmitting window. The detection module is configured to be exposed to the irradiation range of X-rays emitted by the X-ray source and collimated by the first light-transmitting window. The detection module is located outside the light-transmitting area of the second light-transmitting window and is used to detect the radiation dose of the X-rays.
[0011] In an optional embodiment of this utility model, each of the first light-shielding parts is configured to open and close relative to each other, so that the opening of the first light-transmitting window is adjustable within a first stroke, and each of the second light-shielding parts is configured to open and close relative to each other, so that the opening of the second light-transmitting window is adjustable within a second stroke; the first stroke and the second stroke are configured such that when the second light-transmitting window is at any opening within the second stroke, the first light-transmitting window always has an opening within the first stroke that allows the detection module to be exposed to the irradiation range of the X-rays.
[0012] In an optional embodiment of the present invention, a driving component is further included. The driving component is used to drive at least one first light-shielding part and at least one second light-shielding part to move, so as to automatically adjust the opening degree of the first light-transmitting window and the second light-transmitting window. The driving component is configured such that when the driving component drives the second light-transmitting window to adjust to any opening degree within the second stroke, the driving component is always able to drive the first light-transmitting window to adjust to an opening degree that exposes the detection module to the irradiation range of the X-rays.
[0013] In an optional embodiment of the present invention, the driving component includes a first driving element and a second driving element. The first driving element is used to drive the first light-shielding part to open and close, so as to independently adjust the opening degree of the first light-transmitting window. The second driving element is used to drive the second light-shielding part to open and close, so as to independently adjust the opening degree of the second light-transmitting window.
[0014] In an optional embodiment of this utility model, the driving assembly includes a third driving element, which is connected to the first light-blocking part and the second light-blocking part respectively through a transmission mechanism, so as to simultaneously adjust the opening degree of the first light-transmitting window and the second light-transmitting window.
[0015] In an optional embodiment of the present invention, the transmission mechanism is configured such that when the output parameters of the third driving element are constant, the transmission mechanism can drive the first light-transmitting window to open and close at a first speed, and simultaneously drive the second light-transmitting window to open and close at a second speed, wherein the second speed is greater than the first speed.
[0016] In an optional embodiment of this utility model, the transmission mechanism includes one or a combination of gear mechanism, synchronous belt pulley mechanism, and cam mechanism.
[0017] In an optional embodiment of the present invention, at least one of the first light-shielding portions is slidably or oscillatingly disposed relative to the mounting carrier, and at least one of the second light-shielding portions is slidably disposed relative to the mounting carrier.
[0018] To achieve the above and other related objectives, this utility model also provides a medical X-ray emitting device, comprising:
[0019] X-ray source; and
[0020] The X-ray collimator described above;
[0021] The X-ray collimator is installed at the X-ray emission end of the X-ray source.
[0022] To achieve the above and other related objectives, this utility model also provides a medical imaging device, comprising:
[0023] The X-ray collimator mentioned above; or
[0024] The aforementioned medical X-ray emitting device.
[0025] The technical advantages of this invention are as follows: By arranging the radiation sensor on the side of the second shading part of the X-ray collimator facing the X-ray source and limiting the opening relationship between the first shading part and the second shading part, the sensor can continuously receive the original X-rays that have not been attenuated by the human body, thus accurately reflecting the radiation dose. At the same time, the sensor is located outside the light-transmitting area of the second light-transmitting window, avoiding the sensor from blocking the effective light path. Through the coordinated design of spatial position and opening constraints, both radiation monitoring accuracy and imaging integrity are taken into account. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the medical X-ray emitting device provided in one state according to an embodiment of the present invention;
[0027] Figure 2 This is a schematic diagram of the medical X-ray emitting device provided in another state according to an embodiment of the present invention;
[0028] Figure 3 This is a schematic diagram of one driving method of the X-ray collimator provided in an embodiment of this utility model;
[0029] Figure 4 This is a schematic diagram of another driving method for the X-ray collimator provided in an embodiment of this utility model;
[0030] Figure 5 This is a schematic diagram of the medical imaging equipment provided in an embodiment of this utility model. Detailed Implementation
[0031] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. The nouns and pronouns referring to people in this patent application are not limited to specific genders.
[0032] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0033] The working principle of an X-ray machine is as follows: Figure 5As shown, X-rays emitted from X-ray source 100 are collimated by X-ray collimator 110, pass through the human body, and are finally received by X-ray receiving device 200. The computer reconstructs a medical image of the human body based on the received signal. Throughout the process, the detection area of the human body is completely exposed to X-rays. To avoid iatrogenic damage caused by radiation, it is necessary to monitor the radiation dose of X-rays to ensure that the radiation dose is controlled within a safe range. In some solutions, the sensor used to detect the radiation dose is installed near the X-ray receiving device 200. Although this installation method does not obstruct the working path of X-rays, it cannot accurately reflect the radiation dose before the X-rays irradiate the human body because it detects X-rays after they have passed through the human body (i.e., attenuated X-rays). In other solutions, the sensor is installed on the working path of X-ray source 100, such as on the optical path defined by X-ray collimator 110. Although this installation method can detect the actual radiation dose before the X-rays irradiate the human body, it will lead to a decrease in the final image quality because it obstructs the optical path of X-rays. To address this, the present invention provides a novel sensor layout scheme. The sensor is mounted on a layer of light-shielding blades of a dual-leaf collimator, away from the X-ray source 100. The dual-leaf collimator comprises two layers of light-shielding blades, one layer of which is positioned close to the X-ray source 100 (also known as the near-focus blade), and the other layer is positioned away from the X-ray source 100 (also known as the far-focus blade). The near-focus blade is used to initially define the irradiation range, while the far-focus blade can fine-tune the boundary. The two layers working together can reduce penumbra, improve irradiation accuracy, and reduce leakage radiation, thereby enhancing the safety of nearby personnel. The present invention mounts the sensor on the side of the far-focus blade facing the X-ray source 100, and by limiting the opening relationship between the near-focus blade and the far-focus blade, ensures that the sensor is always exposed to X-rays without obstructing the working path of the X-rays, thus ensuring imaging quality while improving radiation detection accuracy.
[0034] The X-ray collimator 110 provided by this utility model can be applied to medical imaging equipment, especially medical imaging equipment that uses X-rays to reconstruct the internal image features of the human body, such as X-ray machines; it should be understood that the application scenarios of the X-ray collimator 110 are not limited to this, and all equipment that needs to accurately measure X-ray radiation dose should be applicable to this utility model; the following describes the technical solution of this utility model in detail with the application of the X-ray collimator 110 in medical imaging equipment.
[0035] Please see Figure 5As shown, an embodiment of this utility model provides a medical imaging device, which includes a medical X-ray emitting device and an X-ray receiving device 200. The medical X-ray emitting device includes an X-ray source 100 (also known as a X-ray tube) and an X-ray collimator 110. The X-ray source 100 is used to generate X-rays, and the X-ray collimator 110 is used to constrain the irradiation range of the X-rays. The X-ray receiving device 200 can be an independent module or integrated into a device such as a hospital bed 300 used to support the human body.
[0036] Please see Figure 1-4 As shown, the X-ray collimator 110 includes a mounting carrier 10, a first light-transmitting window 11, a second light-transmitting window 12, and a detection module 20. The mounting carrier 10 is installed at the X-ray source 100, for example, at the X-ray emission end of the X-ray source 100. The first light-transmitting window 11 and the second light-transmitting window 12 are disposed on the mounting carrier 10. It should be noted that the mounting carrier 10 can be a housing for accommodating the components of the X-ray collimator 110, such as the housing of the X-ray collimator 110, or a support for mounting the components of the X-ray collimator 110, such as a frame for mounting the components of the X-ray collimator 110. Specifically, the first light-transmitting window 11 is formed by a plurality of first light-blocking parts 111; the second light-transmitting window 12... The light window 12 is formed by a plurality of second light-shielding parts 121; the first light-shielding part 111 and the second light-shielding part 121 are components capable of shielding X-rays, such as lead plates; the first light-transmitting window 11 is located between the X-ray source 100 and the second light-transmitting window 12; at least one of the second light-shielding parts 121 is provided with a detection module 20 on the side facing the first light-transmitting window 11, the detection module 20 is assembled to be exposed to the irradiation range of the X-rays emitted by the X-ray source 100 and collimated by the first light-transmitting window 11; the detection module 20 is located outside the light-transmitting area of the second light-transmitting window 12, and the detection module 20 is a sensor for detecting the radiation dose of the X-rays.
[0037] This invention arranges the radiation sensor on the side of the second light-shielding part 121 of the X-ray collimator 110 facing the X-ray source 100, and defines the opening relationship between the first light-shielding part 111 and the second light-shielding part 121, so that the sensor can continuously receive the original X-rays that have not been attenuated by the human body and accurately reflect the radiation dose. At the same time, the sensor is located outside the light-transmitting area of the second light-transmitting window 12, avoiding the sensor from blocking the effective light path. Through the coordinated design of spatial position and opening constraint, both radiation monitoring accuracy and imaging integrity are taken into account.
[0038] Please see Figure 1 , 2As shown, in an optional embodiment of this utility model, each of the first light-shielding parts 111 is configured to open and close relative to each other, so that the opening degree of the first light-transmitting window 11 is adjustable within a first stroke; each of the second light-shielding parts 121 is configured to open and close relative to each other, so that the opening degree of the second light-transmitting window 12 is adjustable within a second stroke; the first stroke and the second stroke are configured such that when the second light-transmitting window 12 is at any opening degree within the second stroke, the first light-transmitting window 11 always has an opening degree within the first stroke that allows the detection module 20 to be exposed to the X-ray irradiation range. It should be noted that the "opening and closing relative to each other" in this utility model refers to the relative movement between the light-shielding parts. This does not mean that each light-shielding part needs to be configured as a movable structure. For example, in some embodiments, some light-shielding parts can be configured as fixed structures, and other light-shielding parts can be configured as movable structures to achieve the mutual opening and closing between the light-shielding parts. This embodiment ensures that the detection module 20 can continuously receive X-rays in any state of adjustment of the second light-transmitting window 12 by dynamically constraining the opening travel relationship of the two light-shielding parts. By establishing a matching mechanism between the first travel and the second travel, the first light-shielding part 111 can adaptively adjust its opening when the second light-shielding part 121 finely adjusts the irradiation boundary. This maintains the collimator's precise control over the irradiation range and ensures the real-time performance and reliability of the sensor in radiation dose detection. Thus, it can balance the accuracy of medical imaging and the continuity of radiation monitoring in dynamic working scenarios.
[0039] It should be understood that in some other embodiments, it may not be necessary to continuously detect the radiation dose in real time, but only to detect the radiation dose at a few specific opening degrees. In this case, the detection module 20 can be exposed to the X-ray irradiation range only at a few specific opening degrees of the second light transmission window 12, thereby reducing the restrictions on the design range of the first and second strokes and increasing the degree of design freedom.
[0040] Please see Figure 3 , 4As shown, in an optional embodiment of this utility model, a driving component is further included. The driving component is used to drive at least one first light-shielding part 111 and at least one second light-shielding part 121 to move, so as to automatically adjust the opening degree of the first light-transmitting window 11 and the second light-transmitting window 12. The driving component is configured such that when the driving component drives the second light-transmitting window 12 to adjust to any opening degree within the second stroke, the driving component can always drive the first light-transmitting window 11 to adjust to an opening degree that exposes the detection module 20 to the irradiation range of the X-rays. This embodiment realizes the linkage control of the two layers of light-shielding parts through the driving component. By dynamically coordinating the opening degree matching relationship of the first light-transmitting window 11 and the second light-transmitting window 12 using the driving component, it ensures that during any adjustment of the position of the second light-shielding part 121, the system can autonomously adjust the opening degree of the first light-shielding part 111 to keep the sensor in an effective monitoring position. This eliminates the radiation monitoring blind zone that may be caused by manual adjustment, and maintains the X-ray collimation accuracy and imaging stability through precise electromechanical coordination control. Thus, while improving the ease of operation, it enhances the reliability and response speed of the radiation safety monitoring system.
[0041] Please see Figure 3 As shown, in an optional embodiment of this utility model, the driving assembly includes a first driving element 31 and a second driving element 32. The first driving element 31 is used to drive the first light-shielding part 111 to open and close, so as to independently adjust the opening degree of the first light-transmitting window 11. The second driving element 32 is used to drive the second light-shielding part 121 to open and close, so as to independently adjust the opening degree of the second light-transmitting window 12. This embodiment, by setting independently controlled first driving element 31 and second driving element 32, enables the first light-shielding part 111 and the second light-shielding part 121 to obtain completely independent degrees of freedom of movement. This satisfies the precise fine-tuning requirements of the second light-shielding part 121 for the irradiation boundary, and also ensures that the first light-shielding part 111 can quickly respond to compensate for the opening degree through the first driving element 31, so that the detection module 20 is fully exposed to the irradiation range of X-rays. This decoupled motion design breaks through the adjustment limitations of traditional linkage mechanisms, and improves the accuracy of irradiation range adjustment and the stability of radiation monitoring while ensuring continuous irradiation of the sensor.
[0042] It should be noted that this utility model does not have any special limitations on the specific types of the first driving element 31 and the second driving element 32. For example, they can be motors, piezoelectric devices, pneumatic components, etc. Corresponding transmission components can be provided between the driving elements and the light-shielding part to convert the output action of the driving elements into the sliding or oscillating action required by the light-shielding part. The transmission components can be, for example, synchronous belt pulley mechanisms, gear mechanisms, cam mechanisms, or combinations thereof. For example, in a specific embodiment, the driving element can be a motor, the transmission component can be a synchronous belt pulley, the light-shielding part can be slidably mounted on the mounting carrier 10, the light-shielding part is connected to the synchronous belt by fasteners, the synchronous belt is tensioned on the pulley, and the motor directly drives the pulley to rotate or drives the pulley to rotate through gears, thereby realizing the opening and closing action of the light-shielding part. Other implementations of the driving elements can be selected from the existing collimator driving methods, which will not be elaborated in this utility model.
[0043] Please see Figure 4 As shown, in an optional embodiment of this utility model, the driving assembly includes a third driving element 33. The third driving element 33 is connected to the first light-shielding part 111 and the second light-shielding part 121 respectively via a transmission mechanism 34, so as to simultaneously adjust the opening of the first light-transmitting window 11 and the second light-transmitting window 12. This embodiment uses a single driving element in conjunction with the transmission mechanism 34 to achieve synchronous linkage adjustment of the two layers of light-shielding parts. While ensuring that the first light-transmitting window 11 always maintains a compensated opening that allows the sensor to be illuminated, the driving structure is significantly simplified. This not only reduces the hardware cost and system complexity caused by multiple drivers, but also avoids coordination errors that may occur from independent control through the deterministic motion relationship of mechanical coupling, making the system more economical and reliable while meeting the radiation monitoring requirements.
[0044] Please see Figure 2 , 4As shown, it should be understood that the X-rays emitted by the X-ray source 100 are scattered outward in a cone shape. Since the first light-shielding part 111 is closer to the X-ray source 100, the effect of the first light-shielding part 111 moving a unit distance on the X-ray irradiation range is greater than that of the second light-shielding part 121 moving a unit distance. Therefore, in order to ensure that the detection module 20 is always exposed to approximately the same irradiation range, the moving distance L1 of the first light-shielding part 111 should be less than the moving distance L2 of the second light-shielding part 121. Therefore, in a preferred embodiment, the transmission mechanism 34 is configured such that when the output parameters of the third driving element 33 are constant, the transmission mechanism 34 can drive the first light-transmitting window 11 to open and close at a first speed, and simultaneously drive the second light-transmitting window 12 to open and close at a second speed, wherein the second speed is greater than the first speed. This embodiment, through the speed matching design of the transmission mechanism 34, addresses the differences in the radiation field caused by the conical scattering characteristics of X-rays and the varying effects of different shading layers. This allows the second shading part 121 to achieve a faster adjustment speed than the first shading part 111, ensuring that the exposure range of the detection module 20 remains relatively constant during the opening and closing of the collimator. This avoids both monitoring failure caused by insufficient irradiation of the sensor and signal saturation caused by excessive exposure, thereby maintaining the stability and accuracy of radiation dose detection in dynamic adjustment scenarios.
[0045] It should be understood that the speed matching method of the first light-shielding part 111 and the second light-shielding part 121 is not unique. For example, in some other embodiments, if the change in the size of the exposure area where the detection module 20 is located is not considered, the first light-shielding part 111 and the second light-shielding part 121 can also be set to move at the same speed. In this case, as long as the detection module 20 can be exposed to the X-ray irradiation range when the first light-transmitting window 11 is at its minimum opening, the detection module 20 can also be exposed to the X-ray irradiation range in other opening states. For another example, when some of the first light-shielding parts 111 and their corresponding second light-shielding parts 121 are fixedly arranged, the detection module 20 can be mounted on these fixed second light-shielding parts 121. In this case, the movement of other moving light-shielding parts will not affect the exposure range of the detection module 20.
[0046] Similarly, this embodiment does not have any special restrictions on the specific types of the third driving element 33 and the transmission mechanism 34. The third driving element 33 may be, for example, a motor, a piezoelectric device, a pneumatic component, etc., and the transmission mechanism 34 may be, for example, a synchronous belt pulley mechanism, a gear mechanism, a cam mechanism, or a combination thereof. By combining these transmission mechanisms 34, the third driving element 33 may have different transmission ratios with the first light-shielding part 111 and the second light-shielding part 121, thereby realizing the differential opening and closing of the above embodiment.
[0047] Please see Figure 1-4As shown, in an optional embodiment of this utility model, at least one first light-shielding part 111 is slidably or oscillatingly disposed relative to the mounting carrier 10, and at least one second light-shielding part 121 is slidably disposed relative to the mounting carrier 10. This embodiment expands the collimator's adaptability to different machine structures by flexibly configuring the movement mode of the light-shielding parts; the sliding mechanism ensures the detection stability when the second light-shielding part 121 is linearly displaced, avoiding radiation incident angle deviation caused by changes in the angle of the second light-shielding part 121.
[0048] In summary, this invention, by arranging the radiation sensor on the side of the second shielding part 121 of the X-ray collimator 110 facing the X-ray source 100 and limiting the opening relationship between the first shielding part 111 and the second shielding part 121, enables the sensor to continuously receive raw X-rays that have not been attenuated by the human body, thus accurately reflecting the radiation dose. Simultaneously, the sensor is located outside the light-transmitting area of the second light-transmitting window 12, avoiding obstruction of the effective light path. Through the coordinated design of spatial position and opening constraints, both radiation monitoring accuracy and imaging integrity are balanced. Furthermore, by dynamically constraining the two layers of shielding... The opening and travel relationship of the two light-shielding parts ensures that the detection module 20 can continuously receive X-rays in any adjustment state of the second light-transmitting window 12. By establishing a matching mechanism between the first and second travel, the first light-shielding part 111 can adaptively adjust its opening when the second light-shielding part 121 finely adjusts the irradiation boundary. This maintains the collimator's precise control over the irradiation range and ensures the real-time performance and reliability of the sensor in radiation dose detection. Thus, even in dynamic working scenarios, it can still balance the accuracy of medical imaging and the continuity of radiation monitoring. The two-layer light-shielding part is realized through the driving component. The linkage control utilizes the driving components to dynamically coordinate the opening matching relationship between the first light-transmitting window 11 and the second light-transmitting window 12. This ensures that during any adjustment of the position of the second light-shielding part 121, the system can autonomously adjust the opening of the first light-shielding part 111 to keep the sensor in an effective monitoring position. This eliminates the radiation monitoring blind spots that may be caused by manual adjustment and maintains the X-ray collimation accuracy and imaging stability through precise electromechanical coordination control. This improves the ease of operation while enhancing the reliability and response speed of the radiation safety monitoring system. By setting independently controlled first driving elements 31 and second driving elements 32, the first light-shielding part 111 and the second light-shielding part 121 obtain completely independent degrees of freedom of movement. This satisfies the precise fine-tuning requirements of the second light-shielding part 121 for the irradiation boundary and ensures that the first light-shielding part 111 can quickly respond to compensate for the opening through the first driving element 31, so that the detection module 20 is fully exposed to the X-ray irradiation range. This decoupled motion design breaks through the adjustment limitations of traditional linkage mechanisms and improves the irradiation range adjustment accuracy and radiation monitoring stability while ensuring continuous irradiation of the sensor.
[0049] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. An X-ray collimator, characterized in that, include: Mounting carrier for installation at X-ray sources; as well as Located on the mounting carrier: A first light-transmitting window formed by multiple first light-blocking parts; A second light-transmitting window formed by multiple second light-blocking parts; When the mounting carrier is installed at the X-ray source, the first light-transmitting window is located between the X-ray source and the second light-transmitting window; At least one of the second light-shielding parts has a detection module on the side facing the first light-transmitting window. The detection module is configured to be exposed to the irradiation range of X-rays emitted by the X-ray source and collimated by the first light-transmitting window. The detection module is located outside the light-transmitting area of the second light-transmitting window and is used to detect the radiation dose of the X-rays.
2. The X-ray collimator according to claim 1, characterized in that, Each of the first light-shielding parts is configured to open and close relative to each other, so that the opening of the first light-transmitting window is adjustable within a first stroke. Each of the second light-shielding parts is configured to open and close relative to each other, so that the opening of the second light-transmitting window is adjustable within a second stroke. The first stroke and the second stroke are configured such that when the second light-transmitting window is at any opening within the second stroke, the first light-transmitting window always has an opening within the first stroke that allows the detection module to be exposed to the X-ray irradiation range.
3. The X-ray collimator according to claim 2, characterized in that, It also includes a driving component, which is used to drive at least one first light-blocking part and at least one second light-blocking part to move, so as to automatically adjust the opening degree of the first light-transmitting window and the second light-transmitting window; The driving component is configured such that when the driving component drives the second light-transmitting window to adjust to any opening within the second stroke, the driving component is always able to drive the first light-transmitting window to adjust to an opening that exposes the detection module to the irradiation range of the X-rays.
4. The X-ray collimator according to claim 3, characterized in that, The driving assembly includes a first driving element and a second driving element. The first driving element is used to drive the first light-shielding part to open and close, so as to independently adjust the opening degree of the first light-transmitting window. The second driving element is used to drive the second light-shielding part to open and close, so as to independently adjust the opening degree of the second light-transmitting window.
5. The X-ray collimator according to claim 3, characterized in that, The driving assembly includes a third driving element, which is connected to the first light-blocking part and the second light-blocking part respectively through a transmission mechanism to simultaneously adjust the opening degree of the first light-transmitting window and the second light-transmitting window.
6. The X-ray collimator according to claim 5, characterized in that, The transmission mechanism is configured such that when the output parameters of the third driving element are constant, the transmission mechanism can drive the first light-transmitting window to open and close at a first speed, and simultaneously drive the second light-transmitting window to open and close at a second speed, wherein the second speed is greater than the first speed.
7. The X-ray collimator according to claim 5, characterized in that, The transmission mechanism includes one or a combination of gear mechanisms, synchronous belt pulley mechanisms, and cam mechanisms.
8. The X-ray collimator according to claim 2, characterized in that, At least one of the first light-shielding portions is slidably or oscillatingly disposed relative to the mounting carrier, and at least one of the second light-shielding portions is slidably disposed relative to the mounting carrier.
9. A medical X-ray emitting device, characterized in that, include: X-ray source; as well as The X-ray collimator according to any one of claims 1 to 8; The X-ray collimator is installed at the X-ray emission end of the X-ray source.
10. A medical imaging device, characterized in that, include: The X-ray collimator according to any one of claims 1 to 8; or The medical X-ray emitting device according to claim 9.