X-ray beam limiting assembly and beam limiting equipment in X-ray lead equivalent detection

Abstract

The utility model discloses an X-ray beam limiting assembly and beam limiting equipment in X-ray lead equivalent detection, and relates to the technical field of radiation dose testing, the X-ray beam limiting assembly comprises a partition plate, a partition plate, a positioning supporting plate and a beam limiting device, the beam limiting device is located in a limiting cavity defined by the partition plate and the positioning supporting plate, and after being limited through a positioning structure, the beam limiting device is located in the limiting cavity. The ray passing hole, the beam limiting hole and the detection through hole coincide, and the path of X-rays emitted by the X-ray machine sequentially passes through the ray passing hole, the beam limiting hole and the detection through hole and then reaches a probe of the X-ray multifunctional detector. The beam limiting assembly is used for shielding the surrounding X-rays with relatively weak energy, so that the middle X-rays with relatively high energy directly reach a detected area, and the lead equivalent detection precision is improved. The X-ray beam limiting assembly is arranged in the beam limiting equipment in X-ray lead equivalent detection, so that the portability and the operation flexibility of the equipment are improved, and the equipment can flexibly move in different working environments and perform efficient detection.

Description

Technical Field

[0001] This utility model relates to the field of radiation dose testing technology, and in particular to an X-ray beam-limiting component and a beam-limiting device for X-ray lead equivalent detection. Background Technology

[0002] In the field of medical radiology, protective equipment (PE) serves as a crucial shielding medium for reducing radiation dose to patients and healthcare workers, making the monitoring of its lead attenuation performance essential. However, many medical institutions currently lack the hardware and technical means to test the lead attenuation performance of PE in X-ray rooms, resulting in difficulties in accurately assessing its lead attenuation status. To ensure the safety of patients and healthcare workers, medical institutions typically employ two measures: first, commissioning external testing agencies to conduct lead equivalent testing on the PE; and second, replacing PE that has reached its five-year service life. Due to the high cost of PE, these measures impose a significant economic burden on medical institutions.

[0003] If healthcare professionals could use X-ray machines in medical institutions to perform lead equivalent testing on protective equipment, the financial burden on these institutions could be significantly reduced. However, the X-rays emitted by X-ray machines have a specific emission angle, which leads to uneven energy distribution on the protective equipment, affecting testing accuracy. Therefore, medical institutions urgently need a device capable of beam-limiting X-rays to enable accurate lead equivalent testing and assessment of protective equipment using X-ray machines. Utility Model Content

[0004] To address the above technical problems, this utility model provides an X-ray beam-limiting component and beam-limiting equipment for X-ray lead equivalent testing, which can popularize lead equivalent testing in medical institutions. With the guidance of professionals, medical technicians can test protective equipment in the X-ray room.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides an X-ray beam limiting assembly, comprising: a partition plate having a detection through-hole extending through its thickness direction; a positioning support plate disposed on the partition plate, wherein the positioning support plate and the partition plate enclose a limiting chamber, the positioning support plate having a positioning structure and a beam passage hole; and a beam limiter disposed in the limiting chamber and positioned by the positioning structure, the beam limiter comprising a lead plate having a beam limiting hole; wherein, after the beam limiter is located in the limiting chamber and positioned by the positioning structure, the beam passage hole, the beam limiting hole, and the detection through-hole coincide, and the path of the X-ray emitted by the X-ray machine passes sequentially through the beam passage hole, the beam limiting hole, and the detection through-hole before reaching the probe of the X-ray multifunctional detector.

[0007] Optionally, the limiter is a disc-shaped structure, and the positioning structure includes at least three connecting blocks extending from the edge of the positioning support plate toward the side closer to the partition. The connecting blocks are arranged sequentially along the circumference of the detection through hole, and in a plane perpendicular to the axis of the detection through hole, the projection center of one of the connecting blocks is offset from the line connecting the projection centers of the other two connecting blocks.

[0008] Optionally, the connecting block is located on the same side of the geometric center line of the detection through hole.

[0009] Optionally, the beam limiter further includes a first support plate and a second support plate, which are detachably connected; the lead plate is disposed between the first support plate and the second support plate; both the first support plate and the second support plate are provided with through holes, which are coaxially arranged with the beam limiting hole, and the through holes and the beam limiting hole together form the beam limiter aperture.

[0010] Optionally, a plurality of partitions are sequentially arranged between the X-ray machine and the probe of the X-ray multifunctional detector, and each partition is provided with a beam limiter and a positioning support plate.

[0011] Optionally, the diameter of the beam limiter apertures on the plurality of partitions gradually decreases from the X-ray machine to the probe of the X-ray multifunction detector.

[0012] This utility model also discloses a beam-limiting device for X-ray lead equivalent detection, including a detection box, in which the above-mentioned X-ray beam-limiting component is disposed, and a placement part for placing the probe is disposed in the detection box.

[0013] Optionally, the detection chamber includes a chamber body, a top cover, and a side cover; the top cover is provided on the top of the chamber body, and the side cover is provided on one side of the chamber body; the X-ray beam confinement assembly is disposed inside the chamber body.

[0014] Optionally, the bottom of the housing is provided with a base plate and / or brake casters and / or height-adjustable support rods.

[0015] Optionally, a pull rod is provided on the other side of the box.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] When using the X-ray beam limiting assembly provided by this utility model, the beam bundler is placed in the limiting chamber formed by the positioning support plate and the partition plate. The beam bundler is positioned by the positioning structure on the support plate, so that the X-ray through hole, the beam limiting hole and the detection through hole coincide. The path of the X-ray emitted by the X-ray machine passes through the X-ray through hole, the beam limiting hole and the detection through hole in sequence before reaching the probe of the X-ray multifunctional detector. Thus, the lead plate shields the weaker X-rays at the edge of the X-ray beam, allowing the higher-energy X-rays in the middle to pass through the beam limiting hole on the lead plate and reach the area to be detected directly, improving the accuracy of lead equivalent detection. This enables medical personnel to use the hospital's X-ray machine to conduct lead equivalent detection and evaluation of protective equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the X-ray beam confinement assembly of this utility model;

[0020] Figure 2 This is a schematic diagram of the beam limiter in the X-ray beam limiting assembly of this utility model;

[0021] Figure 3 This is a schematic diagram of the beam-limiting device used in X-ray lead equivalent detection according to this utility model;

[0022] Figure 4 for Figure 3 A magnified schematic diagram of the local structure at point A;

[0023] Figure 5 This is a schematic diagram of the beam-limiting device in X-ray lead equivalent detection of this utility model from another perspective.

[0024] Explanation of reference numerals in the attached drawings: 1. Box body; 2. Top cover; 201. Hinge; 3. Side cover; 301. Rotating shaft; 4. First partition; 5. Second partition; 6. Bottom plate; 7. X-ray multi-functional detector; 701. Probe; 8. Small hole for the clamp limiter; 9. Pull rod; 10. Brake caster wheel; 11. Height adjustment support rod; 12. Clamp limiter; 13. Positioning support plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1:

[0027] like Figure 1 and 2 As shown, this embodiment provides an X-ray beam-limiting assembly, including a partition plate with a detection through-hole extending through its thickness direction; a positioning support plate 13 is provided on the partition plate, and the positioning support plate 13 and the partition plate enclose a limiting chamber, the positioning support plate 13 is provided with a positioning structure and a beam passage hole; a beam limiter 12 is provided in the limiting chamber and positioned by the positioning structure, the beam limiter 12 includes a lead plate with a beam-limiting hole; after the beam limiter 12 is located in the limiting chamber and limited by the positioning structure, the beam passage hole, the beam-limiting hole and the detection through-hole coincide, and the path of the X-ray emitted by the X-ray machine passes through the beam passage hole, the beam-limiting hole and the detection through-hole in sequence before reaching the probe of the X-ray multifunctional detector.

[0028] The beam limiter can shield weaker X-rays from the surrounding area, allowing higher-energy X-rays from the center to reach the area being tested directly, thus improving the accuracy of lead equivalent detection.

[0029] The positioning structure is mainly used to limit the position of the beam limiter 12, enabling the beam limiter 12 to be positioned quickly, thereby achieving the overlap of the X-ray through hole, the beam limiting hole, and the detection through hole. The positioning structure can also serve as a support structure between the positioning support plate 13 and the partition, enabling the positioning support plate 13 to support the standard lead plate and prevent the standard lead plate from undergoing large deformation.

[0030] The specific structure of the positioning structure needs to match the shape of the clamping device 12. The limiting chamber formed between the positioning support plate 13 and the partition can be a triangular or circular structure with one side open, or a semi-open structure including multiple positioning blocks or positioning columns.

[0031] In some more specific embodiments, the beam limiter 12 has a disc-shaped structure. The positioning structure includes three connecting blocks, which are distributed circumferentially around the detection through-hole. These three connecting blocks occupy a semi-circular area around the detection through-hole, defining a semi-circular region and forming a three-point limiting structure for the beam limiter 12. This ensures that when the edge of the disc-shaped beam limiter 12 simultaneously contacts the three connecting blocks, it can be limited within a single circular area, achieving rapid positioning of the beam limiter 12. This also ensures that the beam-limiting hole in the center of the beam limiter 12 remains coaxial with the detection through-hole and the X-ray through-hole. One side of the limiting chamber has a wide opening, the width of which is greater than the diameter of the beam limiter 12, facilitating the placement and removal of the beam limiter 12. In a further specific embodiment, the connecting blocks are welded to the positioning support plate 13 and the partition plate, respectively. The connecting blocks, positioning support plate 13, and partition plate are made of the same type of steel, preferably stainless steel.

[0032] In some more specific embodiments, the positioning structure may also employ multiple arc-shaped plates distributed circumferentially around the detection through-hole. The clamping device 12 has a disk-shaped structure, with the inner diameter of the arc-shaped plates being the same as the outer diameter of the clamping device 12, and the circumference of the multiple arc-shaped plates being the same as the outer diameter of the clamping device 12. The positioning structure may also employ a semi-circular plate, with the inner diameter of the semi-circular plate being the same as the outer diameter of the clamping device 12.

[0033] In some more specific embodiments, the clamp limiter 12 has a disc-shaped structure, and the three connecting blocks can be replaced with three cylindrical positioning posts, which form a three-point limiting structure for the clamp limiter 12.

[0034] In some more specific embodiments, the clamp limiter 12 adopts a triangular structure, and the positioning structure includes two limiting plates. The included angle between the two limiting plates is the same as the included angle of two sides of the clamp limiter 12, so that when the two sides of the clamp limiter 12 are in contact with the inner surfaces of the corresponding limiting plates, the clamp limiter 12 is positioned by the two limiting plates.

[0035] In some more specific embodiments, the clamping device 12 includes a first support plate, a lead plate, and a second support plate. The first support plate has a U-shaped cross-section and a first through-hole extending through the thickness direction. The outer wall dimension of the lead plate is the same as the inner wall dimension of the first support plate, allowing the lead plate to be placed inside the first support plate and limited by the inner wall of the first support plate. The second support plate has a second through-hole extending through the thickness direction, and the outer wall dimension of the second support plate is the same as that of the first support plate. The first support plate, the lead plate, and the second support plate are fastened together by three screws. The first through-hole of the first support plate, the clamping hole of the lead plate, and the second through-hole of the second support plate together form the clamping device aperture 8. The first and second support plates are used to increase the overall structural strength of the clamping device 12 and prevent the lead plate from deforming. The first and second support plates can be made of steel plates or aluminum alloy plates.

[0036] In some more specific embodiments, the partition includes a first partition 4 and a second partition 5 arranged side by side, both of which are steel plates. A detection through-hole and a beam limiter 12 are provided in the middle of both the first partition 4 and the second partition 5, and the beam limiters 12 on the first partition 4 and the second partition 5 are coaxially arranged. By using the two sets of beam limiters 12 on the first partition 4 and the second partition 5 to shield the low-energy beams around the X-rays twice, the energy intensity of the X-rays reaching the detection position is mainly high-energy beams, which can further improve detection accuracy. In other more specific embodiments, the number of partitions can be selected according to actual conditions.

[0037] In some more specific embodiments, the first partition 4 and the second partition 5 can be arranged horizontally or vertically, depending on the position of the X-ray machine head and the convenient location for placing the protective equipment to be inspected.

[0038] In some more specific embodiments, multiple partitions are provided between the X-ray machine and the probe of the X-ray multifunction detector. Each partition is equipped with a beam limiter and a positioning support plate. The diameter of the beam limiter apertures on the multiple partitions gradually decreases from the X-ray machine to the probe of the X-ray multifunction detector. X-rays are filtered through these gradually decreasing diameter beam limiter apertures, ensuring that the X-rays reaching the probe 701 are high-energy beams. The distance between the X-ray machine head and the first partition 4 is selected according to the emission angle of the X-ray machine head. When the emission angle of the X-ray machine head is large, the distance to the first partition 4 can be reduced, and the number of partitions can be increased simultaneously. Conversely, when the emission angle of the X-ray machine head is small, the distance to the first partition 4 can be increased, and the number of partitions can be reduced simultaneously. More specifically, the X-ray machine head is 130 cm away from the first partition 4. The diameter of the beam limiter aperture 8 in the first partition 4 is 2 cm, and the diameter of the beam limiter aperture 8 in the second partition 5 is 1 cm. The distance between the first partition 4 and the second partition 5 is 20 cm. Because the X-rays emitted by the X-ray machine have a certain emission angle, when the X-rays reach the first partition 4, the low-energy beams around the X-rays are shielded by the beam limiter 12, and only the high-energy beams in the middle can pass through the beam limiter hole 8 on the first partition 4 to irradiate the second partition 5. The beam limiter 12 on the second partition 5 continues to shield the surrounding low-energy beams, so that the X-rays that can finally pass through the beam limiter hole 8 on the second partition 5 are high-energy beams, thereby improving the detection accuracy.

[0039] Example 2:

[0040] like Figures 3 to 5As shown, this embodiment provides a beam-limiting device for X-ray lead equivalent detection, including the X-ray beam-limiting component described in Embodiment 1. The device includes a detection box, within which the aforementioned X-ray beam-limiting component is housed. By incorporating the X-ray beam-limiting component within the beam-limiting equipment for X-ray lead equivalent detection, the portability and operational flexibility of the device are improved, enabling it to move flexibly and perform efficient detection in different working environments.

[0041] In some more specific embodiments, the testing box includes a box body 1, a top cover 2, and a side cover 3. The top cover 2 is located on the top of the box body 1, and the side cover 3 is located on one side of the box body 1. The top cover 2 is hinged to the top of the box body 1 via a hinge 201, and the side cover 3 is hinged to one side of the box body 1 via a pivot 301. The top cover 2 and the side cover 3 ensure easier opening and closing of the box body 1. Users can quickly open the top cover 2 to directly access the probe 701, standard lead, and other components inside the box for necessary operations. The pivot 301 design of the side cover 3 allows the side of the box body 1 to be easily opened, enhancing the accessibility and ease of operation of the box body 1. The top cover 2 and the side cover 3 reduce cumbersome steps during on-site operation and improve the efficiency of equipment use, especially in situations where frequent opening of the equipment interior is required for replacement or inspection.

[0042] The first partition 4 is located at the top of the housing 1, the second partition 5 is located in the upper middle part of the housing 1, and the bottom plate 6 is located at the bottom of the housing 1. More specifically, the X-ray machine head is 130 cm away from the first partition 4, the diameter of the collimator aperture 8 of the first partition 4 is 2 cm, the diameter of the collimator aperture 8 of the second partition 5 is 1 cm, and the diameter of the X-ray receiving part of the probe 701 is 1 cm. The distance between the first partition 4 and the second partition 5 is 20 cm, and the distance between the second partition 5 and the bottom plate 6 is 30 cm.

[0043] To enhance the stability of the equipment, four height-adjustable support rods 11 are provided at the bottom of the base plate 6. These rods allow for height adjustment to accommodate different ground levels, especially when the equipment is not being moved. The height-adjustable support rods 11 support the housing 1, ensuring that the equipment will not shake or tilt due to improper operation or environmental factors (such as uneven ground) even during transport.

[0044] It should be noted that the height adjustment support rod 11 can be adjusted by means of threads, lead screw and nut pairs, or rack and pinion transmission. Any height adjustment method that can meet the usage requirements is within the protection scope of this utility model. Optionally, in a specific embodiment of this utility model, the height adjustment support rod 11 can be threaded to the base plate 6. By rotating the height adjustment support rod 11, the distance between the bottom of the height adjustment support rod 11 and the base plate 6 can be adjusted, so that any height adjustment support rod 11 can be stably supported on the ground. The height adjustment support rod 11 in this specific embodiment has a simple structure, and the distance between the bottom of the height adjustment support rod 11 and the base plate 6 can be changed directly by rotating the height adjustment support rod 11.

[0045] The bottom of the base plate 6 is equipped with four brake casters 10. The brake casters 10 can ensure that the equipment is stably fixed when it needs to be parked, and prevent the equipment from tilting or rolling due to instability.

[0046] A pull rod 9 is located on the other side of the housing 1. The pull rod 9 and the braked casters 10 allow the equipment to be easily moved between multiple work areas, which is especially important when frequent lead equivalent testing is required in different environments. For example, in laboratory rooms or hospital X-ray rooms, users can flexibly adjust the equipment position according to testing needs and quickly conduct tests without worrying about the difficulty of moving the equipment. This flexibility makes the equipment more efficient and better meets the testing needs of different locations on site.

[0047] In addition to lead equivalent testing, the beam-limiting equipment in X-ray lead equivalent testing is designed to meet other on-site work requirements. The base plate 6 can store rulers and standard lead boxes containing 0.1–1 mm standard lead plates, allowing users to store necessary tools for convenient on-site measurements. For example, during lead equivalent testing, the dimensions or height of objects can be measured simultaneously, quickly completing multiple testing tasks and enhancing the equipment's practicality and versatility. This is particularly evident in complex working environments requiring multiple functions to be performed simultaneously, where the equipment's adaptability is significantly improved.

[0048] In this embodiment, the beam-limiting equipment for X-ray lead equivalent detection involves placing the protective equipment in front of the beam limiter hole 8 of the first partition 4 and positioning it below the X-ray machine head. The X-ray tube bulb's focal point irradiates the first partition 4 perpendicularly at a distance of 130 cm. Under irradiation conditions of 70–150 kV, 200 mA, and 1 s, the X-rays penetrate the protective equipment through the beam limiter hole 8 and then reach the probe 701 of the X-ray multifunction detector 7 located above the base plate 6, where filtered dose data is acquired and recorded. Using the same irradiation method, standard lead plates containing 0.1–1 mm standard lead plates are removed from the standard lead box. These plates are then passed through the probe 701 of the X-ray multifunction detector 7 under irradiation conditions of 70–150 kV, 200 mA, and 1 s, respectively, to obtain filtered dose attenuation curves for 0.1–1 mm standard lead at different kVs. By substituting the filtered dose data of the protective equipment into the curves, the lead equivalent of the protective equipment under 70–150 kV conditions can be analyzed and determined. This achieves the goal of easily and conveniently obtaining the lead equivalent of protective equipment, reducing the manpower, material resources, and financial resources required for medical institutions to evaluate protective equipment, and improving work efficiency and economic benefits.

[0049] In summary, the beam-limiting equipment in X-ray lead equivalent testing significantly improves portability and operational flexibility by introducing a pull rod 9, brake casters 10, and a height-adjustable support rod 11, enabling it to move flexibly and perform efficient testing in various working environments. Furthermore, the detachable base plate 6 and the storage method for standard lead plates enhance the equipment's on-site adaptability, allowing users to more conveniently conduct testing and data comparison under changing work requirements, thus comprehensively improving the equipment's practical application value.

[0050] In some more specific embodiments, the top cover 2 is embedded with cushioning sponge, and the side cover 3 is equipped with a locking device to ensure that the detection device is stable and safe during transportation.

[0051] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] This specification uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An X-ray beam limiting assembly, characterized by, The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly.

2. The x-ray beam limiting assembly of claim 1, wherein, The application relates to an X-ray limiting assembly.

3. The x-ray beam limiting assembly of claim 2, wherein, The application relates to an X-ray limiting assembly.

4. The x-ray beam limiting assembly of claim 1, wherein, The application relates to an X-ray limiting assembly.

5. The x-ray beam limiting assembly of claim 1, wherein, The application relates to an X-ray limiting assembly.

6. The x-ray beam limiting assembly of claim 5, wherein, The application relates to an X-ray limiting assembly.

7. A beam limiting assembly in X-ray lead equivalent detection, characterized by The application relates to an X-ray limiting assembly.

8. Beam limiting equipment in X-ray lead equivalence detection according to claim 7, characterized in that, The application relates to an X-ray limiting assembly.

9. Beam limiting equipment in X-ray lead equivalence detection according to claim 8, characterized in that, The application relates to an X-ray limiting assembly.

10. The beam limiting arrangement in x-ray lead equivalence testing of claim 8, wherein, The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. The application relates to an X-ray limiting assembly. 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