Test die body

Abstract

The utility model relates to the technical field of equipment detection, and discloses a test die body which comprises a first module and a second module which are arranged in a stacked mode, the first module is provided with a plurality of first test units with different thicknesses, and the first test units are sequentially diverged outwards with the center of the first module as the circle center; the first module is provided with a plurality of first test units with different sizes, a boundary edge is formed between every two adjacent first test units, the second module is provided with a plurality of second test units with different sizes, and the plurality of second test units are arranged corresponding to the different first test units respectively and avoid the boundary edges. The imaging performance of the imaging equipment is comprehensively and accurately tested by improving the structural characteristics, arrangement characteristics and other parameters of the test units in the test die body.

Description

Technical Field

[0001] This application relates to the technical field of equipment detection, and further relates to a test phantom. Background Art

[0002] The imaging performance test of imaging equipment is a key step to ensure the accuracy of medical diagnosis. However, existing imaging performance test methods often fail to accurately evaluate the performance of the equipment in actual use because traditional test phantoms lack necessary details in design, making it difficult to fully verify the performance of imaging equipment in aspects such as detail resolution and level differentiation. These problems not only limit the full play of the performance of imaging equipment but also pose certain risks to medical diagnosis. Summary of the Utility Model

[0003] In view of the above technical problems, the purpose of this application is to provide a test phantom, aiming to comprehensively and accurately test the imaging performance of imaging equipment by improving the structure and arrangement of test units.

[0004] To achieve the above purpose, this application provides a test phantom for detecting the imaging effect of imaging equipment, including: a first module and a second module stacked;

[0005] The first module has a plurality of first test units with different thicknesses. The plurality of first test units diverge outward in sequence with the center of the first module as the center, and a boundary edge is formed between adjacent two first test units;

[0006] The second module has a plurality of second test units with different sizes. The plurality of second test units are respectively arranged corresponding to different first test units and avoid the boundary edge.

[0007] In some embodiments, the plurality of first test units are arranged in a circular array on the first module, and the thickness of each first test unit increases or decreases sequentially from the center of the first module outward, so that the surface of the first module has a stepped contour.

[0008] In some embodiments, in the first module, one of the first test units is a base circle located at the innermost side, and a plurality of circular structures are formed by circular divergence outward with the base circle as the center. Each circular structure serves as one of the first test units, so that all the first test units jointly enclose and form a first module with a circular contour.

[0009] In some embodiments, the width of the circular structure increases layer by layer from the center of the first module outward, forming a stepped structure with an increasing width;

[0010] Or, the width of each of the annular structures is the same, forming a stepped structure with a uniformly changing width.

[0011] In some embodiments, the second module includes a plurality of second test modules, and the second test modules form an annular divergent array outward from the center of the second module. Each second test module includes a plurality of the second test units, and the second test modules are respectively arranged in one-to-one correspondence with the first test units.

[0012] In some embodiments, within each of the second test modules, the plurality of second test units are arranged in a continuous annular pattern in a clockwise or counterclockwise direction;

[0013] Or,

[0014] The plurality of second test units are grouped at a preset interval, and the second test units within each group have the same diameter and / or thickness and jointly form an arc-shaped trajectory.

[0015] In some embodiments, the diameter and / or thickness of each of the second test units increases or decreases monotonically in a clockwise or counterclockwise direction;

[0016] A plurality of identification holes with different apertures and / or depths are formed on the second module, so that each identification hole correspondingly forms one of the second test units.

[0017] In some embodiments, each of the identification holes is formed on the surface of the second module facing the first module, such that the opening of the identification hole is located inside the test die body.

[0018] In some embodiments, the test die body further includes a gland, the gland is fixedly connected to the second module, and the first module is clamped between the gland and the second module.

[0019] In some embodiments, a receiving groove is formed on one surface of the gland, the size of the receiving groove is adapted to the first module, the outer diameter of the second module is larger than the outer diameter of the first module, and when the gland and the second module are connected, the first module is located inside the receiving groove.

[0020] Compared with the prior art, a test die body provided by the present application has the following beneficial effects:

[0021] 1. In this application, by setting multiple first test units with different thicknesses and multiple second test units with different sizes, the imaging effects of the imaging device under different thicknesses and diameters can be comprehensively detected, thereby more accurately evaluating the performance of the device. On the other hand, the multiple first test units are arranged in a circular array, ensuring that the test phantom can evenly distribute the test units at different radial positions, so as to comprehensively and evenly detect the field of view of the entire imaging device. Moreover, since the thicknesses of the first test units are arranged in an increasing or decreasing order, it is easier to identify the differences in imaging effects at different thicknesses when analyzing the imaging results, and thus accurately evaluate the performance of the device.

[0022] 2. In this application, by setting second test units with different diameters, the imaging situations of different-sized objects in actual imaging can be simulated, which helps to evaluate the resolution and clarity performance of the imaging device on different-sized objects. On the other hand, the arrangement of the circular array of the second test units gives them a clear positioning in space, which helps to evaluate the accuracy and stability of the imaging device when processing different position information.

[0023] 3. In this application, the gland is fitted with the first module through the accommodation groove to prevent it from moving or being damaged during the test. At the same time, the gland, the first module, and the second module are stacked, which can avoid damage to the first module caused by external factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above characteristics, technical features, advantages and their implementation manners of this application will be further described below in a clear and understandable manner in combination with the drawings in the preferred embodiments.

[0025] Figure 1 is an exploded structural schematic diagram of the test phantom in an embodiment of this application;

[0026] Figure 2 is an exploded structural schematic diagram of the test phantom from another perspective in an embodiment of this application;

[0027] Figure 3 is an overall structural schematic diagram of the test phantom in an embodiment of this application;

[0028] Figure 4 is a structural schematic diagram of the second module in an embodiment of this application;

[0029] Figure 5 is a partial cross-sectional view of the first module in an embodiment of this application.

[0030] Reference numerals in the drawings: First module 1; First test unit 10; Second module 2; Second test unit 200; Gland 3; Accommodation groove 30. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will describe the specific implementation manners of the present application with reference to the accompanying drawings. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other implementation manners can also be obtained.

[0032] To make the drawings concise, only the parts related to the application are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, for components with the same structure or function, only one of them is schematically shown, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation.

[0033] It should also be further understood that the term "and / or" used in the specification and appended claims of the present application refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0034] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0036] In addition, in the description of the present application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0037] With the rapid development of medical imaging technology, X-ray imaging technology is increasingly widely used in clinical diagnosis. X-ray imaging technology obtains information inside materials through the penetration and absorption of X-rays, thereby achieving visualization of the internal structure of objects. However, in the actual imaging process, factors such as the thickness, density of materials, and the area of small holes will have an important impact on the imaging effect.

[0038] In the existing X-ray imaging technology, in order to obtain high-quality imaging effects, it is usually necessary to precisely calibrate and test the imaging equipment. Traditional test devices or equipment often have difficulty fully simulating these complex and variable actual imaging scenarios, resulting in deviations in the evaluation of imaging quality.

[0039] Refer to the attached Figure 1 of the specification. A test phantom provided by this application aims to solve the problems existing in the above content and accurately evaluate the performance of the imaging equipment by simulating the actual imaging scenario.

[0040] In one embodiment, refer to the attached Figures 1 to 3 of the specification. A test phantom provided by this application includes a first module 1 and a second module 2, which are stacked and cooperate together to jointly construct a complete test scenario.

[0041] Specifically, as shown in Figure 2 and Figure 5 , the first module 1 has a plurality of first test units 10 with different thicknesses. The plurality of first test units 10 diverge outward in sequence with the center of the first module 1 as the center. By changing the thickness of the first test units 10, the imaging effects of objects with different thicknesses can be simulated, thereby evaluating the resolution and imaging clarity of the imaging equipment under different thickness conditions. Moreover, the diverging arrangement of the first test units 10 ensures uniform test coverage at every point from the center to the edge of the test phantom.

[0042] At the same time, due to this diverging setting, a boundary edge is formed between two adjacent first test units 10, which helps to reduce the mutual interference between adjacent first test units 10 and improve the accuracy of the test. On the other hand, the stacked design of the first module 1 and the second module 2 makes the test phantom more compact in shape, making the test phantom easier to carry. It can easily handle both rapid detection between production lines and on-site fault diagnosis. Secondly, this design simplifies the installation process, eliminating the need for a large amount of preparatory work and complex installation steps, thus saving time costs.

[0043] As shown in Figure 1 and Figure 4As shown, the second module 2 in the above content has multiple second test units 200 with different sizes. Using the second test units 200 with different sizes can simulate different object sizes in the actual imaging scenario. This design helps to evaluate the performance of the imaging device when imaging objects of different sizes, such as resolution and contrast, and ensures that the device can provide high-quality images in actual applications.

[0044] Moreover, multiple second test units 200 are respectively arranged corresponding to different first test units 10 to ensure that there are first test units 10 and second test units 200 in each area, and uniform coverage of the entire imaging area can be achieved. This uniform coverage helps to evaluate the performance of the imaging device within the entire field of view. As can be seen from the attached drawings, the second test unit 200 forms an avoidance of the demarcation edge, so as not to affect the evaluation of the imaging device's processing ability for boundary sharpness through the test phantom.

[0045] In one embodiment, based on the above embodiment, as Figure 2 shown, multiple first test units 10 are arranged in a circular array in the first module 1, and the thickness of each first test unit 10 increases or decreases successively from the center of the first module 1 outward, making the surface of the first module 1 have a stepped contour, simulating the situation of object thickness change in the actual imaging scenario. This design helps to evaluate the resolution ability and imaging sharpness of the imaging device under different thickness conditions.

[0046] It can be understood that through the circular array arrangement of the first test units 10 and the design of increasing or decreasing thickness, the test phantom in this embodiment can comprehensively detect the imaging effect of the imaging device under different thickness backgrounds, so as to more accurately evaluate the performance of the device.

[0047] Furthermore, by transmitting X-rays through the stepped first module 1, the internal structure of multiple stepped thicknesses can be clearly shown, which is convenient for the observer to accurately capture the transition and boundary of different thickness regions. This design not only intuitively reflects the influence of thickness on X-ray transmission imaging, but also provides a certain basis for adjusting the parameters of the X-ray machine after the test, which helps to achieve a higher clarity and accuracy imaging effect.

[0048] In one embodiment, the second module 2 includes multiple second test modules, and these modules form a circular divergent array starting from the center of the second module 2 outward. Each second test module includes multiple second test units 200, and these second test units 200 cooperate together to simulate specific imaging conditions or environments. In addition, the second test modules are arranged in a one-to-one correspondence with the first test units 10 on the first module 1 to ensure the comprehensiveness and accuracy of the test.

[0049] It should be noted that the setting method of the second test module relative to the second module 2 is similar to the setting method of the first test unit 10 relative to the first module 1, both are arranged in a circular divergent array. At the same time, this phantom setting in this embodiment has good flexibility and scalability, and the number, layout of the second test module, and the number, layout of the second test units 200 inside it can be adjusted according to actual needs to adapt to different types of imaging devices or test scenarios.

[0050] In this embodiment, the second test units 200 have different sizes and, of course, can also have different thicknesses. When X-rays pass through these test units, due to their different physical characteristics (size and thickness), different imaging effects will be produced. These imaging effects can be used to evaluate the performance of the imaging device. Specifically, the changes in the size and thickness of the second test units 200 will cause different degrees of absorption and scattering of X-rays, resulting in different images on the imaging device. By observing and analyzing these images, performance indicators such as the clarity, contrast, and resolution of the imaging device can be evaluated, and the imaging device can also be debugged and calibrated according to these performance indicators subsequently.

[0051] In one embodiment, reference can be made to the attached drawings of the specification Figure 2 In the first module 1, the innermost first test unit 10 is a base circle, which is the center and foundation of the entire first module 1. There are multiple circular ring structures that diverge outward with the base circle as the center. Each circular ring structure serves as an independent first test unit 10. The circular ring structure and the base circle together form the first module 1, making the overall contour of the first module 1 a circular contour.

[0052] The first test units 10 of the base circle and each circular ring structure represent a specific thickness condition. By changing the thickness of the base circle or the circular ring structure, the imaging effects at different thicknesses can be simulated. At the same time, by changing the radius of the base circle or the relative width of other circular ring structures, the width change of the stepped structure in the above content can also be adjusted correspondingly.

[0053] In one embodiment, based on the above embodiment, the width of the circular ring structure increases layer by layer from the center outward, making the first module 1 form a stepped contour structure with an increasing width. This design simulates the situation of the object width change in the actual imaging scenario and helps to evaluate the resolution and imaging clarity of the imaging device under different width conditions. Correspondingly, in some other embodiments, the width of the circular ring structure can also be set to change uniformly, and the changes and adjustments in this part should also be included in the protection scope of this application.

[0054] In addition, the width of the second test module and the size of the internal test units can be adjusted accordingly according to the change in the width of the circular structure. This adaptation relationship ensures the effective cooperation between the first module 1 and the second module 2 and the reliability of the overall layout of the test body, making the relative distribution of the first test unit 10 and the second test unit 200 more reasonable.

[0055] Furthermore, the second test units 200 within each second test module also have different arrangement or setting methods.

[0056] First, one arrangement method is that multiple second test units 200 can be arranged in a continuous circular pattern in the clockwise or counterclockwise direction. This arrangement method is not only aesthetically pleasing but also helps to achieve a more uniform X-ray distribution and a more comprehensive imaging effect test.

[0057] When X-rays pass through the second module 2, due to the circular arrangement of the second test units 200, they can be transmitted by X-rays at different angles and positions. In this way, the signals received by the imaging device will contain more dimensional information, which helps to more accurately evaluate the performance of the device.

[0058] At the same time, there is also an arrangement method similar to an intermittent circular arrangement. Specifically, multiple second test units 200 are grouped and set at a preset interval. The second test units 200 within each group have the same diameter and / or thickness and together form an arc-shaped trajectory. It can be understood that the second test units 200 are grouped according to a preset rule to form multiple groups. The second test units 200 within each group have the same or similar physical characteristics (such as diameter or thickness), which helps to simplify the test process and improve the test efficiency.

[0059] In addition to the continuous and intermittent circular arrangements, the second test units 200 can also adopt other arrangement methods, such as random arrangement, symmetric arrangement, or spiral arrangement, etc. These different arrangement methods can simulate more diverse imaging conditions, thereby more comprehensively evaluating the performance of the imaging device.

[0060] For example, random arrangement can simulate various irregular scenarios that the imaging device may encounter during actual use; symmetric arrangement helps to evaluate the performance consistency of the device in different directions; while spiral arrangement can achieve layer-by-layer scanning and evaluation of the device's performance.

[0061] These diverse arrangement methods of the second test units 200 can form a good cooperative relationship with the circular contour and annular divergence structure of the first module 1. When X-rays pass through the first module 1 and the second module 2 in sequence, they will act together to simulate more complex and comprehensive imaging conditions.

[0062] By observing and analyzing these imaging effects, relevant personnel can more accurately evaluate the performance indicators of the imaging device, such as clarity, contrast, and resolution. At the same time, these diverse arrangement methods also help to discover potential problems and deficiencies of the device under different conditions.

[0063] Furthermore, the diameter and / or thickness of each second test unit 200 monotonically increase or decrease along a certain direction (clockwise or counterclockwise), so that the second test unit 200 shows a regular change in space, which helps to more systematically study the performance of the imaging device under different conditions. On the other hand, the design of the monotonically changing diameter and / or thickness helps to make full use of the space of the second module 2, so that the arrangement of the second test unit 200 relative to the second module 2 can be more compact and efficient.

[0064] In one embodiment, a number of identification holes with different apertures and / or depths are designed on the second module 2, and these identification holes correspond to the second test units 200 one by one. By changing parameters such as the area and position of the identification holes, the imaging objects faced by the imaging device under different conditions can be simulated, and then the imaging clarity and effect of the device can be evaluated.

[0065] It can be understood that the aperture size and depth of the identification holes can be different, because their apertures or depths will affect the attenuation degree when X-rays pass through, thus simulating the absorption effects of materials with different thicknesses or densities on X-rays. In addition, the position distribution of the identification holes on the second module 2 is also diverse, which helps to simulate and evaluate the imaging ability of the imaging device at a specific position.

[0066] Specifically, reference can be made to the appendix Figure 4 , the shapes of the identification holes are all round holes. Of course, in other embodiments, they can also be other shapes, such as squares, rectangles, or triangles, etc., so as to further simulate various small holes that may exist on the imaging surface in actual applications, and thus more comprehensively evaluate the imaging performance of the imaging device.

[0067] Based on this embodiment, furthermore, each identification hole is opened on the surface of the second module 2 facing the first module 1, so that the opening of the identification hole is located inside the test phantom. Since the identification hole opens inside the test phantom, it is difficult for external pollutants to enter the hole, which ensures that the identification hole can still maintain its original state after long-term use, thus maintaining the test accuracy, and also avoiding frequent cleaning or calibration of the identification hole during use, thereby simplifying the operation process and improving work efficiency.

[0068] In one embodiment, the test phantom further includes a gland 3. The first module 1 in the above content is clamped between the second module 2 and the gland 3, and the three are stacked in sequence. The second module 2 and the gland 3 are connected by fixing members to ensure the stability of the test phantom, effectively preventing loosening or falling off caused by external factors such as vibration and impact. Specifically, detachable connection can be achieved using fixing members such as screws. The second module 2, the first module 1, and the gland 3 can be disassembled and reorganized according to specific test conditions.

[0069] Among them, as Figure 2 shown, a receiving groove 30 is formed on one side surface of the gland 3, and the size of the receiving groove 30 matches that of the first module 1. This design not only facilitates the positioning and installation of the first module 1 but also effectively prevents it from moving or falling off during the test. In addition, the outer diameter of the second module 2 is larger than that of the first module 1 to facilitate the connection with the gland 3, making the structure of the entire test phantom more compact.

[0070] In one embodiment, the first module 1 uses a copper sheet as the main material. Copper has good X-ray absorption characteristics and can simulate tissue structures with different densities in the human body. According to the above embodiment, the copper sheet is designed with a stepped profile of multiple thicknesses. This design can accurately simulate tissue layers of different thicknesses, providing a series of resolution and contrast test challenges for the imaging device. Moreover, the design of increasing the thickness of the copper sheet enables the imaging device to detect details in continuous density changes, thereby evaluating its performance in actual medical diagnosis.

[0071] The second module 2 can be made of an acrylic plate. Utilizing its high transparency and easy processing characteristics, holes of different sizes, such as the identification holes mentioned above, are formed on its surface. By changing the size of the holes, different-sized lesions or other imaging features can be simulated. The hole design of the acrylic plate not only provides a test for the resolution of the imaging device but also can evaluate the device's ability to identify small-sized features. When these two modules are stacked together, they can jointly form a complex test environment, thereby comprehensively evaluating the imaging device's ability to distinguish details, differentiate levels, and identify features of different sizes and densities.

[0072] It should be noted that the above embodiments can be freely combined according to needs. The above are only the preferred embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A test phantom, characterized in that: Used for detecting the imaging effect of an imaging device, comprising: a first module and a second module arranged in a stacked manner; The first module has a plurality of first test units with different thicknesses, the plurality of first test units are radiated outwards in sequence with the center of the first module as the center, and a boundary edge is formed between two adjacent first test units; The second module has a plurality of second test units of different sizes, and the plurality of second test units are respectively arranged corresponding to different first test units and avoid the boundary edge.

2. The test phantom according to claim 1, characterized in that: A plurality of the first test units are arranged in a ring array on the first module, and the thickness of each of the first test units increases or decreases outward from the center of the first module, so that the surface of the first module has a stepped profile.

3. The test phantom according to claim 2, characterized in that: In the first module, one of the first test units is a base circle located at the innermost side, and a plurality of circular ring structures are formed by radiating outward from the base circle as the center. Each of the circular ring structures serves as a first test unit, so that all the first test units together form a first module with a circular contour.

4. The test phantom according to claim 3, characterized in that: The width of the annular structure increases layer by layer from the center of the first module outwards, forming a stepped structure with increasing width; Alternatively, the width of each of the circular ring structures is the same, forming a stepped structure with uniformly varying width.

5. The test phantom according to any one of claims 1 to 4, characterized in that: The second module includes multiple second test modules, and the second test modules form a circular divergent array outward from the center of the second module. One second test module includes multiple second test units, and the second test modules are arranged in a one-to-one correspondence with the first test units respectively.

6. The test phantom according to claim 5, characterized in that: In each of the second test modules, The plurality of second test units are arranged in a continuous ring in a clockwise or counterclockwise direction; or, A plurality of the second test units are arranged in groups at preset intervals, and the second test units in each group have the same diameter and / or thickness and together form an arc-shaped trajectory.

7. The test phantom according to claim 6, characterized in that: The diameter and / or thickness of each of the second test units increases or decreases monotonically in a clockwise or counterclockwise direction; The second module is provided with a plurality of identification holes with different apertures and / or depths, so that each of the identification holes forms a corresponding second test unit.

8. The test phantom according to claim 7, characterized in that: Also includes: Each of the identification holes is opened on a surface of the second module facing the first module, so that the opening of the identification hole is located inside the test module.

9. The test phantom according to any one of claims 1-4, 6-8, characterized in that: Also includes: A gland is fixedly connected to the second module, and the first module is clamped between the gland and the second module.

10. The test phantom according to claim 9, characterized in that: Also includes: A receiving groove is provided on one side surface of the gland, the size of which is adapted to the first module, the outer diameter of the second module is larger than the outer diameter of the first module, and when the gland and the second module are connected, the first module is located in the receiving groove.

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