Intelligent electric beam-limiting device with large field of view and X-ray imaging system

Abstract

This invention provides an intelligent motorized beam limiter with a large field of view and an X-ray imaging system. The beam limiter includes a housing and a lead blade module located within the housing. The lead blade module includes X-direction and Y-direction lead blade modules and first, second, and third drive components. The X-direction lead blade module includes first and second double-layer lead blade modules spaced apart along the X-direction. The Y-direction lead blade module is located below the X-direction lead blade module. The first, second, and third drive components are respectively connected to the first and second double-layer lead blade modules and the Y-direction lead blade module. The beam limiter of this invention can achieve a larger opening within a limited space, allowing the X-ray imaging system using this beam limiter to obtain continuous, complete, and clear images through a single exposure. Compared to multiple exposures, single exposure significantly reduces the radiation dose received by the patient, minimizing unnecessary radiation exposure. Furthermore, it reduces operational procedures and time, improving work efficiency and imaging quality.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology and relates to an intelligent electric beam limiter with a large field of view and an X-ray imaging system. Background Technology

[0002] In medical X-ray diagnostic equipment, high voltage is used to emit X-rays through a tube. A collimator is a device used to limit the X-ray field, restricting it to the minimum required range to prevent excessive radiation exposure to patients (the average annual radiation dose for an individual should not exceed 50 mSv; exceeding this dose can easily cause cancer, and radiation beyond the safe dose can further promote cancer cell growth, leading to very serious consequences for the patient). In actual use, operators need to observe the patient's appearance and the areas to be exposed to determine the appropriate X-ray dose and adjust the collimator using buttons to constrain the X-ray irradiation range. This dose determination is subjective and inconsistent, posing significant operational difficulties and potential safety hazards.

[0003] In addition, most hospitals currently use digital radiography (DR) with an imaging field of only 43cm×43cm. When taking pictures of the entire spine or lower limb (the length of the adult spine is generally greater than 60cm, and the length of the lower limb is even longer), it is not possible to take a complete X-ray image of the entire spine or lower limb in one go. Diagnosis can only be assisted by taking multiple X-rays in segments and then relying on human judgment or algorithm stitching. This method is not only time-consuming and produces discontinuous images, but also increases the radiation dose to the human body.

[0004] Therefore, how to provide a collimator and X-ray imaging system to reduce unnecessary radiation dose to patients, improve imaging quality, and enhance the efficiency and accuracy of X-ray examinations has become an important technical problem that urgently needs to be solved by those skilled in the art.

[0005] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application. Summary of the Invention

[0006] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide an intelligent electric beam limiter and X-ray imaging system with a large field of view, which solves the problems in the prior art where the beam limiter field of view is small, requiring multiple segmented images or image stitching by algorithms to obtain continuous, complete and clear images. At the same time, multiple images and subjective determination of X-ray exposure dose cause patients to suffer more radiation doses, and multiple images lead to a significant reduction in the service life of the equipment, and cumbersome operation leads to low efficiency.

[0007] To achieve the above and other related objectives, the present invention provides an intelligent electric beam limiter with a large firing field, comprising a housing and a lead blade module located within the housing, the lead blade module comprising:

[0008] The X-direction lead blade module includes a first double-layer lead blade module and a second double-layer lead blade module spaced apart along the X direction. The first double-layer lead blade module includes a first upper lead blade and a first lower lead blade spaced apart vertically. The second double-layer lead blade module includes a second upper lead blade and a second lower lead blade spaced apart vertically. The first upper lead blade and the second upper lead blade are located in the same plane, and the first lower lead blade and the second lower lead blade are located in the same plane.

[0009] The Y-direction lead blade module is located below the X-direction lead blade module. The Y-direction lead blade module includes a first bottom lead blade and a second bottom lead blade spaced apart along the Y direction. The first bottom lead blade and the second bottom lead blade are located on the same plane.

[0010] The first driving component is connected to the first double-layer lead blade module to drive the first upper lead blade and the first lower lead blade to move simultaneously along the X direction. The first lower lead blade and the first upper lead blade move in the same direction, and the speed of the first lower lead blade is greater than the speed of the first upper lead blade.

[0011] The second drive component is connected to the second double-layer lead blade module to drive the second upper lead blade and the second lower lead blade to move simultaneously along the X direction. The movement directions of the second lower lead blade and the second upper lead blade are the same, and the movement speed of the second lower lead blade is greater than that of the second upper lead blade.

[0012] The third drive component is connected to the Y-direction lead leaf module to drive the first bottom lead leaf and the second bottom lead leaf to move simultaneously along the Y direction, with the first bottom lead leaf and the second bottom lead leaf moving in opposite directions.

[0013] Optionally, the first driving assembly includes a first motor, a first coaxial double-layer gear, a first upper rack, a first lower rack, a first upper slider, a first lower slider, a first upper slide rail, and a first lower slide rail; the first motor drives the coaxial double-layer gear to rotate, the coaxial double-layer gear includes a first upper gear and a first lower gear, the diameter of the first lower gear is larger than the diameter of the first upper gear, the first upper rack, the first lower rack, the first upper slide rail, and the first lower slide rail all extend along the X direction, and the first upper rack meshes with the first upper gear. The first lower rack meshes with the first lower gear. The first upper slider is connected between the first upper rack and the first upper blade. The first lower slider is connected between the first lower rack and the first lower blade. The first upper slider cooperates with the first upper slide rail to slide along the first upper slide rail as the first upper gear rotates, thereby driving the first upper blade to move in the X direction. The first lower slider cooperates with the first lower slide rail to slide along the first lower slide rail as the first lower gear rotates, thereby driving the first lower blade to move in the X direction.

[0014] Optionally, the first coaxial double-layer gear is a driving gear, and the first motor is connected to the first coaxial double-layer gear; or the first coaxial double-layer gear is a driven gear, and the first drive assembly further includes a driving pulley and a belt, the first motor is connected to the driving pulley, and the belt is sleeved on the driving pulley and the first coaxial double-layer gear.

[0015] Optionally, the second drive assembly includes a second motor, a second coaxial double-layer gear, a second upper rack, a second lower rack, a second upper slider, a second lower slider, a second upper slide rail, and a second lower slide rail; the second motor drives the coaxial double-layer gear to rotate, the coaxial double-layer gear includes a second upper gear and a second lower gear, the diameter of the second lower gear is larger than the diameter of the second upper gear, the second upper rack, the second lower rack, the second upper slide rail, and the second lower slide rail all extend along the X direction, and the second upper rack meshes with the second upper gear. The second lower rack meshes with the second lower gear. The second upper slider is connected between the second upper rack and the second upper lead blade. The second lower slider is connected between the second lower rack and the second lower lead blade. The second upper slider cooperates with the second upper slide rail to slide along the second upper slide rail as the second upper gear rotates, thereby driving the second upper lead blade to move in the X direction. The second lower slider cooperates with the second lower slide rail to slide along the second lower slide rail as the second lower gear rotates, thereby driving the second lower lead blade to move in the X direction.

[0016] Optionally, the second coaxial double-layer gear is a driving gear, and the second motor is connected to the second coaxial double-layer gear; or the second coaxial double-layer gear is a driven gear, and the second drive assembly further includes a driving pulley and a belt, the second motor is connected to the driving pulley, and the belt is sleeved on the driving pulley and the second coaxial double-layer gear.

[0017] Optionally, the third drive assembly includes a third motor, a bottom gear, a first bottom rack, and a second bottom rack. The first bottom rack and the second bottom rack are located on both sides of the bottom gear in the X direction and are both meshed with the bottom gear. The first bottom rack is connected to the first bottom lead blade, and the second bottom rack is connected to the second bottom lead blade. The third motor is connected to the bottom gear to drive the bottom gear to rotate and drive the first bottom rack and the second bottom rack to move in opposite directions in the Y direction, thereby driving the first bottom lead blade and the second bottom lead blade to move in opposite directions in the Y direction.

[0018] Optionally, the constrictor may further include a variable-opening lead cup mounted on the top of the housing.

[0019] Optionally, the beam limiter further includes a TOF module installed in the housing, with the light-emitting surface of the TOF module facing the detection surface, for detecting the distance from the object being detected to the beam limiter and reconstructing three-dimensional depth information.

[0020] Optionally, the TOF module integrates an RGB camera for capturing images of the placement of the object being detected.

[0021] The present invention also provides an X-ray imaging system, including an intelligent motorized beam limiter with a large field of view as described in any of the above claims.

[0022] As described above, the intelligent electric beam limiter with a large field of view of the present invention includes a housing and a lead blade module located within the housing. The lead blade module includes an X-direction lead blade module, a Y-direction lead blade module, a first drive assembly, a second drive assembly, and a third drive assembly. The X-direction lead blade module includes a first double-layer lead blade module and a second double-layer lead blade module spaced apart along the X-direction. The Y-direction lead blade module is located below the X-direction lead blade module. The first drive assembly is connected to the first double-layer lead blade module, the second drive assembly is connected to the second double-layer lead blade module, and the third drive assembly is connected to the Y-direction lead blade module. Because the X-direction lead blade module of the beam limiter uses double-layer lead blades, compared to a single-layer lead blade, the beam limiter of the present invention can achieve a larger opening within a limited space. This allows the X-ray imaging system using this beam limiter to obtain continuous, complete, and clear images through a single exposure. Compared to multiple exposures, a single exposure significantly reduces the radiation dose received by the patient, reducing unnecessary radiation dose to the patient, and also reduces operation procedures and time, improving work efficiency and imaging quality. Attached Figure Description

[0023] Figure 1 The diagram shows a three-dimensional view of the intelligent electric beam limiter with a large field of view in one embodiment of the present invention, with the front facing upwards.

[0024] Figure 2 The diagram shows a three-dimensional structure of the intelligent electric beam limiter with a large field of view of the present invention, with the back side facing up in one embodiment.

[0025] Figure 3 The image shown is an X-axis sectional view of an embodiment of the intelligent electric beam limiter with a large field of fire of the present invention.

[0026] Figure 4 The image shown is a Y-direction cross-sectional view of an embodiment of the intelligent electric beam limiter with a large field of fire of the present invention.

[0027] Figure 5 The image shown is a top view of a lead leaf module in one embodiment.

[0028] Figure 6 The image shown is a bottom view of a lead leaf module in one embodiment.

[0029] Figure 7 The image shown is a cross-sectional view of the lead leaf module in one embodiment from a first perspective.

[0030] Figure 8 The image shown is a cross-sectional view of the lead leaf module in one embodiment from a second perspective.

[0031] Figure 9 The image shown is a cross-sectional view of the lead leaf module in one embodiment from a third-person perspective.

[0032] Figure 10 The image shown is a cross-sectional view of the lead leaf module in one embodiment from a fourth perspective.

[0033] Figure 11 The diagram shown is a structural schematic of a TOF module in one embodiment.

[0034] Figure 12 The diagram shown is a schematic representation of an embodiment of the X-ray imaging system of the present invention.

[0035] Component designation explanation

[0036] 1. Outer shell

[0037] 2 Lead Leaf Module

[0038] 201 X-direction lead leaf module

[0039] 2011 First Double-Layer Lead Leaf Module

[0040] 20111 First Upper Layer Lead Leaf

[0041] 20112 First Lower Layer Lead Sheet

[0042] 2012 Second Double-Layer Lead Leaf Module

[0043] 20121 Second Upper Layer Lead Leaf

[0044] 20122 Second Lower Layer Lead Leaf

[0045] 202 Y-direction lead leaf module

[0046] 2021 First Bottom Layer Lead Leaf

[0047] 2022 Second Bottom Layer Lead Leaf

[0048] 203 First Drive Component

[0049] 2031 First Electric

[0050] 2032 First Coaxial Double-Layer Gear

[0051] 2033 First Upper Layer Rack

[0052] 2034 First Lower Layer Rack

[0053] 2035 First Upper Slider

[0054] 2036 First Lower Layer Slider

[0055] 2037 First Upper Level Slide Rail

[0056] 2038 First Lower Level Slide Rail

[0057] 2039a Drive Pulley

[0058] 2039b Driven pulley

[0059] 2030 belt

[0060] 204 Second drive component

[0061] 2041 Second Motor

[0062] 2042 Second coaxial double-layer gear

[0063] 2043 Second upper rack

[0064] 2044 Second Lower Layer Rack

[0065] 205 Third Drive Component

[0066] 2051 Third Motor

[0067] 2052 First bottom rack

[0068] 2053 Second bottom rack

[0069] 2054 Second Bottom Slider

[0070] 206 guide groove

[0071] 207 Guide Rail Fixing Plate

[0072] 208 guide rail

[0073] 3. Variable opening lead bowl

[0074] 4 TOF modules

[0075] 401 area array TOF module

[0076] 402 Single-point TOF module

[0077] 403 network port

[0078] 404 power connector

[0079] 405 Printed Circuit Board Assembly

[0080] 406 heatsink

[0081] 5 RGB cameras

[0082] 6. Beam limiter

[0083] 7 X-ray emitting devices

[0084] 8 X-ray detectors

[0085] 9 beams

[0086] 10 Touchscreen Displays

[0087] 11. Light Field Module Detailed Implementation

[0088] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0089] Please see Figures 1 to 12 It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the 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.

[0090] Example 1

[0091] This embodiment provides an intelligent electric beam limiter with a large firing field. Please refer to [link / reference]. Figures 1 to 4 ,in, Figure 1 The diagram shows a three-dimensional view of the constraint when the front side is facing upwards in one embodiment. Figure 2 This diagram shows a three-dimensional structure of the clamp with its back side facing up in one embodiment. Figure 3 The image shown is a cross-sectional view along the X direction of one embodiment of the constraint limiter. Figure 4 The image shown is a Y-direction cross-sectional view of the constraint in one embodiment.

[0092] Specifically, the beam limiter includes a housing 1 and a lead leaf module 2 located in the housing 1.

[0093] For example, please refer to Figures 5 to 10 ,in, Figure 5 The image shown is a top view of the lead leaf module 2 in one embodiment. Figure 6 The image shown is a bottom view of the lead leaf module 2 in one embodiment. Figure 7 , Figure 8 , Figure 9 and Figure 10 The images are cross-sectional views of the lead leaf module 2 from different perspectives in one embodiment.

[0094] Specifically, the lead leaf module 2 includes an X-direction lead leaf module 201, a Y-direction lead leaf module 202, a first drive component 203, a second drive component 204, and a third drive component 205.

[0095] Specifically, the X-direction lead leaf module 201 includes a first double-layer lead leaf module 2011 and a second double-layer lead leaf module 2012 arranged at intervals along the X direction, and the Y-direction lead leaf module 202 is located below the X-direction lead leaf module 201.

[0096] Specifically, the first drive component 203 is connected to the first double-layer lead leaf module 2011, the second drive component 204 is connected to the second double-layer lead leaf module 2012, and the third drive component 205 is connected to the Y-direction lead leaf module 202.

[0097] In other words, the lead sheet module 2 is divided into an X-direction lead sheet module and a Y-direction lead sheet module. The X-direction lead sheet module consists of two independently movable double-layer lead sheet modules, while the Y-direction lead sheet module consists of two lead sheets with opposite directions of movement that cannot move independently.

[0098] As an example, the three sets of lead sheets are powered by three independent motors, and the opening and closing of the window and the control of the window size are achieved through rack and pinion or belt pulley plus rack drive.

[0099] Specifically, the first double-layer lead leaf module 2011 includes a first upper lead leaf 20111 and a first lower lead leaf 20112 arranged vertically at intervals, and the second double-layer lead leaf module 2012 includes a second upper lead leaf 20121 and a second lower lead leaf 20122 arranged vertically at intervals. The first upper lead leaf 20111 and the second upper lead leaf 20121 are located on the same plane, and the first lower lead leaf 20112 and the second lower lead leaf 20122 are located on the same plane.

[0100] Specifically, the Y-direction lead leaf module 202 includes a first bottom lead leaf 2021 and a second bottom lead leaf 2022 spaced apart along the Y direction, and the first bottom lead leaf 2021 and the second bottom lead leaf 2022 are located on the same plane.

[0101] Specifically, the first drive component 203 is connected to the first double-layer lead blade module 2011 to drive the first upper lead blade 20111 and the first lower lead blade 20112 to move simultaneously along the X direction. The first lower lead blade 20112 moves in the same direction as the first upper lead blade 20111, and the speed of the first lower lead blade 20112 is greater than the speed of the first upper lead blade 20111.

[0102] As an example, the first drive assembly 203 includes a first motor 2031, a first coaxial double-layer gear 2032, a first upper rack 2033, a first lower rack 2034, a first upper slider 2035, a first lower slider 3036, a first upper slide rail 2037, and a first lower slide rail 2038.

[0103] Specifically, the first motor 2031 drives the coaxial double-layer gear 2032 to rotate. The coaxial double-layer gear 2032 includes a first upper gear and a first lower gear. The diameter of the first lower gear is larger than the diameter of the first upper gear. The first upper rack 2033, the first lower rack 2034, the first upper slide rail 2037, and the first lower slide rail 2038 all extend along the X direction. The first upper rack 2033 meshes with the first upper gear, and the first lower rack 2034 meshes with the first lower gear. The first upper slider 2035 is connected to the first upper rack 2033 and... Between the first upper lead blades 20111, the first lower slider 2036 connects the first lower rack 2034 and the first lower lead blade 20122. The first upper slider 2035 cooperates with the first upper slide rail 2037 to slide along the first upper slide rail 2037 as the first upper gear rotates, thereby driving the first upper lead blade 20111 to move in the X direction. The first lower slider 2036 cooperates with the first lower slide rail 2038 to slide along the first lower slide rail 2038 as the first lower gear rotates, thereby driving the first lower lead blade 20112 to move in the X direction. Since the diameter of the first lower gear is larger than the diameter of the first upper gear, the movement speed of the first lower lead blade 20112 is faster than the movement speed of the first upper lead blade 20111.

[0104] As an example, the first coaxial double-layer gear 2032 can be either a driving gear or a driven gear, depending on the availability of space. For example, when space is insufficient, the first coaxial double-layer gear 2032 can be a driven gear. The first motor 2031 is connected to a driving pulley at another location and drives the driven pulley with a belt, thereby driving the first coaxial double-layer gear 2032 to rotate.

[0105] Specifically, when the first coaxial double-layer gear 2032 is the driving gear, the first motor 2031 is connected to the first coaxial double-layer gear 2032; and when the first coaxial double-layer gear 2032 is the driven gear (e.g., ... Figure 5As shown in the diagram, the first drive assembly 203 further includes a drive pulley 2039a, a belt 2030, and a driven pulley 2039b. The first motor 2031 is connected to the drive pulley 2039a, and the belt 2030 is sleeved on the drive pulley 2039a and the driven pulley 2039b. The first double-layer lead leaf module 2011 is powered by the motor, which transmits power to the double-layer gear through the pulley and belt. The double-layer gear drives two racks to move, and the two racks drive the two layers of lead leaves and the slider to move on the guide rail, respectively. Since the diameters of the double-layer gears are different while the motor speeds are the same, the movement speeds of the racks are different, which in turn causes the movement speeds of the double-layer lead leaves to be different. For example, the movement speed of the first lower lead leaf 20112 is faster than that of the first upper lead leaf 20111.

[0106] Specifically, the second drive component 204 is connected to the second double-layer lead blade module 2012 to drive the second upper lead blade 20121 and the second lower lead blade 20122 to move simultaneously along the X direction. The second lower lead blade 20122 moves in the same direction as the second upper lead blade 20121, and the movement speed of the second lower lead blade 20122 is greater than the movement speed of the second upper lead blade 20121.

[0107] Similar to the first driving component 203, the second driving component 204 includes a second motor 2041, a second coaxial double-layer gear 2042, a second upper rack 2043, a second lower rack 2044, a second upper slider, a second lower slider, a second upper slide rail, and a second lower slide rail. The second motor drives the coaxial double-layer gear to rotate. The coaxial double-layer gear includes a second upper gear and a second lower gear. The diameter of the second lower gear is larger than the diameter of the second upper gear. The second upper rack, the second lower rack, the second upper slide rail, and the second lower slide rail all extend along the X direction. The second upper rack meshes with the second upper gear, the second lower rack meshes with the second lower gear, the second upper slider is connected between the second upper rack and the second upper lead blade, the second lower slider is connected between the second lower rack and the second lower lead blade, the second upper slider cooperates with the second upper slide rail to slide along the second upper slide rail as the second upper gear rotates, thereby driving the second upper lead blade to move in the X direction, and the second lower slider cooperates with the second lower slide rail to slide along the second lower slide rail as the second lower gear rotates, thereby driving the second lower lead blade to move in the X direction.

[0108] Similar to the first coaxial double-layer gear 2032, the second coaxial double-layer gear can be a driving gear (such as...). Figure 5 (As shown), it can also be a driven wheel. In Figure 5 In the lead leaf module shown, the second double-layer lead leaf module 2012 is powered by a motor. The double-layer gear drives two racks to move, and the two racks drive the two layers of lead leaves and the slider to move on the guide rail respectively. Since the diameter of the double-layer gears is different while the motor speed is the same, the movement speed of the racks is different. Thus, the movement speed of the double-layer lead leaves is different. For example, the movement speed of the second lower lead leaf 20122 is always faster than the movement speed of the second upper lead leaf 20121.

[0109] Specifically, the third drive component 205 is connected to the Y-direction lead leaf module 202 to drive the first bottom lead leaf 2021 and the second bottom lead leaf 2022 to move simultaneously along the Y direction, with the first bottom lead leaf 2021 and the second bottom lead leaf 2022 moving in opposite directions.

[0110] As an example, the third drive assembly 205 includes a third motor 2051, a bottom gear, a first bottom rack 2052, and a second bottom rack 2053. The first bottom rack 2052 and the second bottom rack 2053 are located on opposite sides of the bottom gear in the X direction and are both meshed with the bottom gear. The first bottom rack 2052 is connected to the first bottom lead leaf 2021, and the second bottom rack 2053 is connected to the second bottom lead leaf 2022. The third motor 2051 is connected to the bottom gear to drive the bottom gear to rotate, and drives the first bottom rack 2052 and the second bottom rack 2053 to move in opposite directions in the Y direction, thereby driving the first bottom lead leaf 2021 and the second bottom lead leaf 2022 to move in opposite directions in the Y direction. That is, the Y-direction lead leaf module 202 is powered by the motor, which is transmitted to the two racks through a gear, and the two racks simultaneously drive the two lead leaves to move in opposite directions on the guide rail 208.

[0111] As an example, the first bottom rack 2052 is connected to the first bottom lead leaf 2021 via the first bottom slider, and the second bottom rack 2053 is connected to the second bottom lead leaf 2022 via the second bottom slider 2055.

[0112] As an example, the lead leaf module also includes a guide groove 206 and a guide rail fixing plate 207.

[0113] As an example, the beam limiter also includes a variable-aperture lead cup 3 mounted on the top of the housing 1, wherein the lead cup is used for initial positioning of the X-ray beam path, and the opening adjustment method of the variable-aperture lead cup 3 can be adopted in a suitable manner as needed, such as a push-pull method with a handle.

[0114] As an example, the beam limiter also includes an optical field module 11 installed in the housing 1.

[0115] As an example, the beam limiter also includes a TOF module 4 installed in the housing 1, with the light-emitting surface of the TOF module 4 facing the detection surface, for detecting the distance from the object being detected to the beam limiter and reconstructing three-dimensional depth information.

[0116] Specifically, Time of Flight (TOF) technology is a 3D imaging technique that emits continuous pulses of infrared light of a specific wavelength towards a target. A specific sensor then receives the light signal transmitted back from the object, and the distance to the target is determined by detecting the time it takes for the light pulses to travel (round trip). A TOF lens mainly consists of a light-emitting unit, optical lenses, and an image sensor, with a recognition distance of 0.4 to 5 meters. TOF technology boasts strong anti-interference capabilities and a higher FPS refresh rate, thus performing well in dynamic scenes. Furthermore, TOF technology requires less computation for depth information, resulting in lower CPU / ASIC computational demands and thus lower requirements for algorithms.

[0117] For example, please refer to Figure 11 The diagram shows a structural schematic of the TOF module 4 in one embodiment, wherein the TOF module 4 includes an area array TOF module 401 and a single-point TOF module 402.

[0118] In some embodiments, the TOF module 4 also integrates an RGB camera 5 for capturing images of the placement of the object being detected.

[0119] In some embodiments, the TOF module 4 further includes a network port 403, a power interface 404, a printed circuit board assembly (PCBA) 405, and a heat sink 406, which can output real-time RGB images and reconstructed three-dimensional depth information to the system via an RJ45 gigabit network cable.

[0120] As an example, the size of the limiter can be substantially the same as that of a conventional limiter or other suitable sizes can be used, without any specific restrictions.

[0121] In this embodiment, the beam limiter achieves window opening and closing and window size control through the coordinated movement of the X-direction lead leaf module 201 and the Y-direction lead leaf module 202. Compared with a single-layer lead leaf, the beam limiter of this invention can achieve a larger opening in a limited space, enabling the X-ray imaging system using this beam limiter to obtain continuous, complete, and clear images through a single exposure. Compared with multiple exposures, a single exposure greatly reduces the radiation dose received by the patient, reducing unnecessary radiation dose to the patient, and can also reduce operation procedures and time, improving work efficiency and imaging quality.

[0122] Example 2

[0123] This embodiment provides an X-ray imaging system, which includes the intelligent electric beam limiter with a large field of view described in Embodiment 1.

[0124] For example, please refer to Figure 12 The diagram shows a schematic representation of the X-ray imaging system in one embodiment, including a beam limiter 6, an X-ray emitting device 7, an X-ray detector 8, and an X-ray control system (not shown). The beam limiter 6 is located between the X-ray emitting device 7 and the X-ray detector 8. The X-ray emitting device 7 may be, for example, an X-ray tube, and the X-ray detector 8 may be, for example, a flat panel detector, for receiving X-rays transmitted through the object being inspected and generating an image. The X-ray control system is connected to the beam limiter 6 and is used to confirm the imaging location based on the patient's positioning image, calculate the patient's body thickness based on three-dimensional depth information, and adjust the opening size, exposure time, and exposure dose of the lead leaf module according to the imaging location and body thickness.

[0125] As an example, Figure 12 The image shows beam 9.

[0126] Specifically, the TOF module on the collimator 6 can detect the distance between the patient and the collimator. The X-ray control system can calculate the patient's body thickness based on this distance and automatically adjust the aperture size, exposure time, and exposure dose according to the imaging location and body thickness. This optimizes the workflow, reduces operation procedures and time, minimizes unnecessary radiation dose to the patient, and improves work efficiency and imaging quality. Further configuration with an RGB module allows for real-time display of the patient's positioning image and fully automatic adjustment of the light field size to achieve intelligent positioning. This improves the efficiency and accuracy of X-ray examinations while also intelligently controlling radiation dose and monitoring the status, further optimizing the workflow.

[0127] As an example, the X-ray control system can monitor the shooting status in real time by analyzing the image information transmitted from the RGB+TOF integrated module and take corresponding measures for abnormal situations.

[0128] As an example, the collimator is equipped with an intelligent capacitive touch display screen 10, which can display the working status of the collimator in real time, such as: source image distance (SID), filter type, aperture size, shooting location, exposure dose, exposure time and other information. In addition, the exposure mode can be customized and frequently used exposure modes can be saved to realize automatic exposure function, reduce operation process and time, and improve work efficiency and shooting quality.

[0129] As an example, by using a lead bowl with a variable opening, increasing the brightness enhancement light field component, and stacking to increase the lead leaf opening, combined with a large target angle X-ray tube and a large-size plate, it is possible to obtain continuous, complete, and clear images in a single low-dose exposure, with an imaging size of up to 82×125cm. The increased brightness enhancement light field component, the large target angle X-ray tube, and the large-size plate are all designed to accommodate the increased lead leaf opening, and specific parameters can be configured according to actual needs.

[0130] The X-ray imaging system of this embodiment solves the long-standing problems of traditional solutions in terms of imaging effect, imaging time, and negative impact on patients. At the same time, it improves the efficiency and accuracy of doctors in diagnosis, reduces equipment debugging time, lowers equipment usage costs, and extends equipment lifespan.

[0131] In summary, the intelligent electric beam limiter with a large field of view of the present invention includes a housing and a lead blade module located within the housing. The lead blade module includes an X-direction lead blade module, a Y-direction lead blade module, a first drive assembly, a second drive assembly, and a third drive assembly. The X-direction lead blade module includes a first double-layer lead blade module and a second double-layer lead blade module spaced apart along the X-direction. The Y-direction lead blade module is located below the X-direction lead blade module. The first drive assembly is connected to the first double-layer lead blade module, the second drive assembly is connected to the second double-layer lead blade module, and the third drive assembly is connected to the Y-direction lead blade module. Because the X-direction lead blade module of the beam limiter uses double-layer lead blades, compared to a single-layer lead blade, the beam limiter of the present invention can achieve a larger opening within a limited space. This allows the X-ray imaging system using this beam limiter to obtain continuous, complete, and clear images through a single exposure. Compared to multiple exposures, a single exposure significantly reduces the radiation dose received by the patient, reducing unnecessary radiation exposure and simplifying the operation process and time, thus improving work efficiency and imaging quality. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0132] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. An electrically powered beam limiter with a large field of fire, characterized in that, Includes a housing and a lead leaf module located within the housing, the lead leaf module comprising: The X-direction lead blade module includes a first double-layer lead blade module and a second double-layer lead blade module spaced apart along the X direction. The first double-layer lead blade module includes a first upper lead blade and a first lower lead blade spaced apart vertically. The second double-layer lead blade module includes a second upper lead blade and a second lower lead blade spaced apart vertically. The first upper lead blade and the second upper lead blade are located in the same plane, and the first lower lead blade and the second lower lead blade are located in the same plane. The Y-direction lead blade module is located below the X-direction lead blade module. The Y-direction lead blade module includes a first bottom lead blade and a second bottom lead blade spaced apart along the Y direction. The first bottom lead blade and the second bottom lead blade are located on the same plane. The first driving component is connected to the first double-layer lead blade module to drive the first upper lead blade and the first lower lead blade to move simultaneously along the X direction. The first lower lead blade and the first upper lead blade move in the same direction, and the speed of the first lower lead blade is greater than the speed of the first upper lead blade. The second drive component is connected to the second double-layer lead blade module to drive the second upper lead blade and the second lower lead blade to move simultaneously along the X direction. The movement directions of the second lower lead blade and the second upper lead blade are the same, and the movement speed of the second lower lead blade is greater than that of the second upper lead blade. The third drive component is connected to the Y-direction lead leaf module to drive the first bottom lead leaf and the second bottom lead leaf to move simultaneously along the Y direction, with the first bottom lead leaf and the second bottom lead leaf moving in opposite directions.

2. The electrically powered beam limiter with a large firing field according to claim 1, characterized in that: The first driving assembly includes a first motor, a first coaxial double-layer gear, a first upper rack, a first lower rack, a first upper slider, a first lower slider, a first upper slide rail, and a first lower slide rail. The first motor drives the first coaxial double-layer gear to rotate. The first coaxial double-layer gear includes a first upper gear and a first lower gear. The diameter of the first lower gear is larger than the diameter of the first upper gear. The first upper rack, the first lower rack, the first upper slide rail, and the first lower slide rail all extend along the X direction. The first upper rack meshes with the first upper gear. The first lower rack meshes with the first lower gear. The first upper slider is connected between the first upper rack and the first upper blade. The first lower slider is connected between the first lower rack and the first lower blade. The first upper slider cooperates with the first upper slide rail to slide along the first upper slide rail as the first upper gear rotates, thereby driving the first upper blade to move in the X direction. The first lower slider cooperates with the first lower slide rail to slide along the first lower slide rail as the first lower gear rotates, thereby driving the first lower blade to move in the X direction.

3. The electrically powered beam limiter with a large firing field according to claim 2, characterized in that: The first coaxial double-layer gear is a driving gear, and the first motor is connected to the first coaxial double-layer gear; or the first coaxial double-layer gear is a driven gear, and the first drive assembly further includes a driving pulley and a belt, the first motor is connected to the driving pulley, and the belt is sleeved on the driving pulley and the first coaxial double-layer gear.

4. The electrically powered beam limiter with a large firing field according to claim 1, characterized in that: The second drive assembly includes a second motor, a second coaxial double-layer gear, a second upper rack, a second lower rack, a second upper slider, a second lower slider, a second upper slide rail, and a second lower slide rail. The second motor drives the second coaxial double-layer gear to rotate. The second coaxial double-layer gear includes a second upper gear and a second lower gear. The diameter of the second lower gear is larger than the diameter of the second upper gear. The second upper rack, the second lower rack, the second upper slide rail, and the second lower slide rail all extend along the X direction. The second upper rack meshes with the second upper gear. The second lower rack meshes with the second lower gear. The second upper slider is connected between the second upper rack and the second upper lead blade. The second lower slider is connected between the second lower rack and the second lower lead blade. The second upper slider cooperates with the second upper slide rail to slide along the second upper slide rail as the second upper gear rotates, thereby driving the second upper lead blade to move in the X direction. The second lower slider cooperates with the second lower slide rail to slide along the second lower slide rail as the second lower gear rotates, thereby driving the second lower lead blade to move in the X direction.

5. The electrically powered beam limiter with a large firing field according to claim 4, characterized in that: The second coaxial double-layer gear is the driving gear, and the second motor is connected to the second coaxial double-layer gear; or the second coaxial double-layer gear is the driven gear, and the second drive assembly further includes a driving pulley and a belt, the second motor is connected to the driving pulley, and the belt is sleeved on the driving pulley and the second coaxial double-layer gear.

6. The electrically powered beam limiter with a large firing field according to claim 1, characterized in that: The third drive assembly includes a third motor, a bottom gear, a first bottom rack, and a second bottom rack. The first bottom rack and the second bottom rack are located on both sides of the bottom gear in the X direction and are both meshed with the bottom gear. The first bottom rack is connected to the first bottom lead blade, and the second bottom rack is connected to the second bottom lead blade. The third motor is connected to the bottom gear to drive the bottom gear to rotate and drive the first bottom rack and the second bottom rack to move in opposite directions in the Y direction, thereby driving the first bottom lead blade and the second bottom lead blade to move in opposite directions in the Y direction.

7. The electrically powered beam limiter with a large firing field according to claim 1, characterized in that: The constrictor also includes a variable-opening lead cup mounted on the top of the housing.

8. The electrically powered beam limiter with a large firing field according to claim 1, characterized in that: The beam limiter also includes a TOF module installed in the housing, with the light-emitting surface of the TOF module facing the detection surface, used to detect the distance from the object being detected to the beam limiter and reconstruct three-dimensional depth information.

9. The electrically powered beam limiter with a large field of fire according to claim 8, characterized in that: The TOF module integrates an RGB camera for capturing images of the placement of the object being detected.

10. An X-ray imaging system, characterized in that, Includes an electrically powered beam limiter with a large field of fire as described in any one of claims 1-9.

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