X-ray light intensity modulation device

Abstract

The invention discloses an X-ray light intensity modulation device, the X-ray light intensity modulation device comprises a housing, a filter, a driving assembly and a controller, the housing defines an installation space, the filter is arranged in the installation space in a liftable manner, and the driving assembly is arranged in the installation space and is used for driving the filter to ascend and descend in the installation space; the controller is electrically connected with the driving assembly and used for controlling the working state of the driving assembly. The multiple filters and the multiple driving assemblies are arranged at intervals in the width direction of the shell, and the filtering effects of the multiple filters are different. The X-ray light intensity modulation device can provide various filtering effects according to actual needs, an experimenter does not need to manually replace a filter, and the X-ray light intensity modulation device is relatively convenient to use.

Description

Technical Field

[0001] The present invention relates to the technical field of CT equipment, and in particular to an X-ray light intensity modulation device. Background Art

[0002] X-ray imaging modulation is a technique used to optimize X-ray imaging quality and radiation exposure. This technique involves changing the characteristics of the X-ray beam to accommodate different imaging needs and patient sizes, thereby providing clearer, more accurate images and reducing radiation exposure to the patient. Using filters is a common X-ray modulation technique, and by using a bow-tie-shaped filter, the intensity distribution of the X-ray beam can be homogenized. This helps reduce artifacts in the image and improves contrast while reducing radiation exposure to the patient.

[0003] The current X-ray modulation technology can only use a single filter, which can only provide a single filtering effect during the CT scanning process, and cannot provide appropriate filtering effects according to changes in the scanning objects and scanning conditions. In order to adapt to scanning objects of different sizes, experimenters can only manually replace the filter to modulate the X-ray beam. However, this replacement process will significantly increase the data acquisition time. Summary of the invention

[0004] The purpose of the present invention is to provide an X-ray light intensity modulation device, which can provide a variety of filtering effects according to actual needs, and does not require experimenters to manually replace filters, so it is more convenient to use.

[0005] In order to achieve the above technical effects, the technical solution of the present invention is as follows:

[0006] The present invention discloses an X-ray light intensity modulation device, comprising: a shell, which defines an installation space; a filter, which is arranged in the installation space in a liftable manner; a drive component, which is arranged in the installation space and is used to drive the filter to be lifted and lowered in the installation space; a controller, which is electrically connected to the drive component and is used to control the working state of the drive component; wherein: there are multiple filters and multiple drive components, and the multiple filters are arranged at intervals along the width direction of the shell, and the filtering effects of the multiple filters are different.

[0007] In some embodiments, the driving assembly includes a driving motor and a transmission assembly, the power input end of the transmission assembly cooperates with the driving shaft of the driving motor, and the power output end of the transmission assembly is connected to one end of the filter.

[0008] In some specific embodiments, the transmission assembly includes: a lead screw connected to a driving shaft of the driving motor; and a nut member, the nut member cooperates with the lead screw and is connected to one end of the filter.

[0009] In some more specific embodiments, the nut member includes: a nut body, the nut body cooperates with the lead screw; and a support block, the support block is connected to the nut body and is used to support the filter.

[0010] In some more specific embodiments, a protrusion is provided on the side wall of the filter, and a groove matching with the protrusion is provided on the support block.

[0011] In some more specific embodiments, a mounting groove is provided on the side wall of the mounting space, the mounting groove passes through the top wall of the mounting space, and the lead screw is installed in the mounting groove.

[0012] In some embodiments, the X-ray light intensity modulation device further includes a height detection component, which is disposed on a side wall of the installation space and is electrically connected to the controller, and is used to detect the height of the filter.

[0013] In some embodiments, a slide rail extending in a vertical direction is provided on a side wall of the installation space, and a slider cooperating with the slide rail is provided on the filter.

[0014] In some specific embodiments, the sliding blocks include at least two sliding blocks arranged in a vertical direction.

[0015] In some embodiments, the filter comprises a bow-tie ray filter.

[0016] The beneficial effects of the X-ray light intensity modulation device of the present invention are as follows: In the actual working process, a variety of filters are installed in the installation space in advance according to the type of scanning part, and the filter number information is input in advance in the controller, and the control command is written in the controller according to the different scanning orders of different parts. During the scanning, the drive component receives the command of the controller to raise and lower the filter, so that the X-ray source is aligned with different filters, so as to provide a variety of filtering effects to meet the actual scanning requirements. During the entire working process, there is no need to manually replace the filter connected to the X-ray source, only the program needs to be compiled in the controller in advance, and the operation is very simple.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1is a schematic structural diagram of an X-ray light intensity modulation device according to an embodiment of the present invention;

[0019] Figure 2 It is a partial structural schematic diagram of an X-ray light intensity modulation device according to an embodiment of the present invention.

[0020] Reference numerals:

[0021] 100, housing; 110, installation space; 111, installation groove; 200, filter; 210, protrusion; 300, transmission assembly; 310, lead screw; 320, nut member; 321, nut body; 322, support block; 3221, groove; 400, slide rail; 500, slider. DETAILED DESCRIPTION

[0022] In order to make the technical problem solved by the present invention, the technical solution adopted and the technical effect achieved more clearly, the technical solution of the present invention is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Reference below Figure 1-Figure 2 The specific structure of the X-ray light intensity modulation device according to the embodiment of the present invention is described.

[0027] The present invention discloses an X-ray light intensity modulation device, such as Figure 1-Figure 2 As shown, the X-ray light intensity modulation device includes a housing 100, a filter 200, a drive assembly and a controller. The housing 100 defines an installation space 110. The filter 200 can be lifted and lowered in the installation space 110. The drive assembly is arranged in the installation space 110 and is used to drive the filter 200 to lift and lower in the installation space 110. The controller is electrically connected to the drive assembly and is used to control the working state of the drive assembly. There are multiple filters 200 and drive assemblies. The multiple filters 200 are arranged at intervals along the width direction of the housing 100, and the filtering effects of the multiple filters 200 are different. It can be understood that in the actual working process, multiple filters 200 are installed in the installation space 110 in advance according to the type of scanning part, and the number information of the filter 200 is input in advance in the controller, and the control command is written in the controller according to the different scanning orders of different parts. During scanning, the drive assembly receives the command of the controller to lift and lower the filter 200, so that the X-ray source is aligned with different filters 200, so as to provide multiple filtering effects to meet the actual scanning requirements. During the entire working process, there is no need to manually replace the filter 200 connected to the X-ray source. It only needs to be programmed in the controller in advance, and the operation is very simple.

[0028] It should be noted that, for example, the controller can be a single microcontroller or a plurality of distributed microcontrollers, and the microcontroller can run a control program to control the drive components to realize their functions. The specific structure and control logic of the controller can be selected according to the existing technology and need not be elaborated.

[0029] In some embodiments, Figure 1 As shown, the drive assembly includes a drive motor and a transmission assembly 300, the power input end of the transmission assembly 300 cooperates with the drive shaft of the drive motor, and the power output end of the transmission assembly 300 is connected to one end of the filter 200. It can be understood that, compared with directly using a drive structure to drive the filter 200 to rise and fall, using the transmission assembly 300 as an intermediate force transmission device can increase the output torque of the drive assembly, thereby ensuring that the filter 200 is stably raised and lowered, and can protect the drive motor, avoiding the phenomenon that the drive motor is directly connected to the filter 200 and the connection is easily damaged.

[0030] In some specific embodiments, Figure 1As shown, the transmission assembly 300 includes a lead screw 310 and a nut member 320, the lead screw 310 is connected to the driving shaft of the driving motor, and the nut member 320 cooperates with the lead screw 310 and is connected to one end of the filter 200. It can be understood that the matching structure of the lead screw 310 and the nut member 320 can stably drive the filter 200 to rise and fall, and can improve the motion accuracy of the filter 200 on the other hand, ensuring that the filter 200 can stably stop at a specified position during actual operation.

[0031] In some more specific embodiments, the nut member 320 includes a nut body 321 and a support block 322, the nut body 321 cooperates with the lead screw 310, and the support block 322 is connected to the nut body 321 and is used to support the filter 200. It can be understood that the use of the support block 322 to support the filter 200 can ensure the stability of the filter 200, thereby ensuring that when the lead screw 310 rotates to drive the nut body 321 to rise and fall in the vertical direction, the filter 200 can be driven to rise and fall stably, thereby avoiding the occurrence of the phenomenon that the filter 200 is skewed and caused to get stuck.

[0032] In some more specific embodiments, a protrusion 210 is provided on the side wall of the filter 200, and a groove 3221 is provided on the support block 322 to cooperate with the protrusion 210. It can be understood that the cooperation between the protrusion 210 and the groove 3221 can improve the connection stability between the filter 200 and the support block 322, thereby further improving the stability of the filter 200.

[0033] In some more specific embodiments, a mounting groove 111 is provided on the side wall of the installation space 110, and the mounting groove 111 is arranged through the top wall of the installation space 110, and the lead screw 310 is installed in the mounting groove 111. It is understandable that if the lead screw 310 is directly installed in the installation space 110, on the one hand, foreign matter is easy to accumulate on the lead screw 310, and after long-term operation, it may cause a stuck connection between the lead screw 310 and the nut member 320. On the other hand, in an unexpected situation, the exposed lead screw 310 is easy to be damaged, which reduces the service life of the X-ray light intensity control device. In this embodiment, the lead screw 310 is installed in the mounting groove 111, which can better protect the lead screw 310.

[0034] In some embodiments, the X-ray light intensity modulation device further includes a height detection member, which is disposed on the side wall of the installation space 110 and is electrically connected to the controller, and the height detection member is used to detect the height of the filter 200. It is understood that in the actual working process, when the height detection member detects that the filter 200 moves to a specified height and feeds back to the controller, the controller transmits a control instruction toward the drive assembly, so that the drive assembly stops driving the filter 200. The additional height detection member cooperates with the controller to realize the feedback control logic, thereby ensuring that the filter 200 can stably stop at the specified position in the actual working process.

[0035] It should be noted that, in the embodiment of the present invention, the type of the height detection element can be selected according to actual needs, such as an infrared sensor, a photoelectric switch and other structures, and the specific type and signal of the height detection element are not limited here.

[0036] In some embodiments, a slide rail 400 extending in the vertical direction is provided on the side wall of the installation space 110, and a slider 500 cooperating with the slide rail 400 is provided on the filter 200. It can be understood that the cooperation between the slide rail 400 and the slider 500 can limit the movement direction of the filter 200, so that in the actual working process, the filter 200 can only move in the vertical direction, avoiding the phenomenon of the filter 200 being skewed and stuck.

[0037] In some specific embodiments, the slider 500 includes at least two sliders arranged in a vertical direction, thereby improving the guiding effect on the filter 200 .

[0038] In some embodiments, the filter 200 includes a bow-tie type ray filter. Of course, in other embodiments of the present invention, the filter 200 can also be selected according to actual needs.

[0039] Example:

[0040] like Figure 1-Figure 2As shown, the X-ray light intensity modulation device includes a housing 100, a filter 200, a drive assembly and a controller. The housing 100 defines an installation space 110. The controller is electrically connected to the drive assembly and is used to control the working state of the drive assembly. There are two filters 200 and two drive assemblies. The two filters 200 are arranged at intervals along the width direction of the housing 100, and the filtering effects of the two filters 200 are different. The drive assembly includes a drive motor and a transmission assembly 300. The drive motor is arranged on the housing 100. The transmission assembly 300 includes a lead screw 310 and a nut member 320. The lead screw 310 is connected to the drive shaft of the drive motor. The nut member 320 includes a nut body 321 and a support block 322. The nut body 321 cooperates with the lead screw 310. The support block 322 is connected to the nut body 321 and is used to support the filter 200. A protrusion 210 is provided on the side wall of the filter 200, and a groove 3221 that cooperates with the protrusion 210 is provided on the support block 322. The side wall of the installation space 110 is provided with an installation groove 111, which penetrates the top wall of the installation space 110, and the lead screw 310 is installed in the installation groove 111. The side wall of the installation space 110 is provided with a slide rail 400 extending in the vertical direction, and the filter 200 is provided with a slider 500 cooperating with the slide rail 400.

[0041] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. An X-ray light intensity modulation device, characterized in that: include: A housing (100), wherein the housing (100) defines an installation space (110); A filter (200), the filter (200) being arranged in the installation space (110) in a liftable manner; a driving component, the driving component being arranged in the installation space (110) and being used for driving the filter (200) to rise and fall in the installation space (110); A controller, the controller is electrically connected to the driving assembly and is used to control the working state of the driving assembly; wherein: There are a plurality of filters (200) and a plurality of drive components, and the plurality of filters (200) are arranged at intervals along the width direction of the housing (100), and the filtering effects of the plurality of filters (200) are different.

2. The X-ray light intensity modulation device according to claim 1, characterized in that: The driving assembly comprises a driving motor and a transmission assembly (300), wherein a power input end of the transmission assembly (300) cooperates with a driving shaft of the driving motor, and a power output end of the transmission assembly (300) is connected to one end of the filter (200).

3. The X-ray light intensity modulation device according to claim 2, characterized in that: The transmission assembly (300) comprises: A lead screw (310), wherein the lead screw (310) is connected to a drive shaft of the drive motor; A nut member (320), the nut member (320) cooperates with the lead screw (310) and is connected to one end of the filter (200).

4. The X-ray light intensity modulation device according to claim 3, characterized in that: The nut member (320) comprises: A nut body (321), wherein the nut body (321) cooperates with the lead screw (310); A support block (322), the support block (322) is connected to the nut body (321) and is used to support the filter (200).

5. The X-ray light intensity modulation device according to claim 4, characterized in that: A protrusion (210) is provided on the side wall of the filter (200), and a groove (3221) matching the protrusion (210) is provided on the support block (322).

6. The X-ray light intensity modulation device according to claim 3, characterized in that: A mounting groove (111) is provided on the side wall of the mounting space (110), the mounting groove (111) is arranged through the top wall of the mounting space (110), and the lead screw (310) is installed in the mounting groove (111).

7. The X-ray light intensity modulation device according to claim 1, characterized in that: The X-ray light intensity modulation device further comprises a height detection component, which is arranged on a side wall of the installation space (110) and is electrically connected to the controller, and is used to detect the height of the filter (200).

8. The X-ray light intensity modulation device according to claim 1, characterized in that: A slide rail (400) extending in a vertical direction is provided on the side wall of the installation space (110), and a sliding block (500) cooperating with the slide rail (400) is provided on the filter (200).

9. The X-ray light intensity modulation device according to claim 8, characterized in that: The sliding blocks (500) include at least two sliding blocks arranged in a vertical direction.

10. The X-ray light intensity modulation device according to claim 1, characterized in that: The filter (200) comprises a bow-tie type ray filter.

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