Multifunctional X-ray machine quality control detection die body

Abstract

The utility model discloses a quality control detection die body of a multifunctional X-ray machine, which comprises a base material, and a first detection die body, a second detection die body, a third detection die body and a fourth detection die body are respectively arranged in an upper left corner area, an upper right corner area, a lower left corner area and a lower right corner area of the base material; a cylinder is fixedly arranged in the center area of the base material, and the two end faces of the cylinder are parallel to the front face and the back face of the base material respectively. And mutually matched lead balls are fixedly arranged at the central positions of the two end parts of the cylinder respectively. According to the utility model, the central position which can be used for detecting the perpendicularity of the wire harness is formed in an array layout mode, and the large circle and the small circle which are concentric as well as different positions of the two lead balls fixed on the base material through the cylinder are utilized to perform contrast matching, so that the accurate detection of the perpendicularity of the wire harness is realized, the structure is simple, and the detection precision is improved. Moreover, the device is stable and reliable, and effectively improves the detection accuracy and efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of quality control and calibration of medical equipment, in particular to a multifunctional X-ray machine quality control detection model. Background Art

[0002] X-ray quality control test phantoms are an important tool for evaluating and calibrating the performance of X-ray equipment.

[0003] This type of phantom usually contains a variety of test modules for testing various parameters of the X-ray machine, such as resolution, contrast, beam quality, etc. For example, the "comprehensive imaging test phantom" disclosed in the utility model patent application number 201920708307.5 can perform comprehensive testing of multiple parameters of the X-ray machine to ensure that the equipment performance meets the requirements of medical or industrial applications.

[0004] The working principle of the test phantom is to simulate tissues and structures of different densities through various built-in test patterns and materials to evaluate the imaging quality and accuracy of the X-ray machine. In practical applications, this phantom is widely used in scenarios such as quality control of medical equipment, equipment acceptance, and periodic performance testing. It is an important tool to ensure the accuracy and reliability of X-ray imaging diagnosis.

[0005] However, when using such phantoms to test the performance of X-ray machines, the deviation of the verticality of the beam becomes a key issue. In the prior art, the verticality of the X-ray machine beam is usually tested by the following methods:

[0006] 1. Mechanical measurement method: This method relies on physical measuring tools, such as goniometers or levels, to check the angle between the X-ray beam and the detection plane. Technicians need to manually place these tools and ensure their accuracy to measure the perpendicularity of the beam to the detection plane. However, this method is cumbersome to operate, and its accuracy is limited by the accuracy of the measuring tools and the technical level of the operator.

[0007] 2. Optical alignment method: This method usually uses special alignment devices, such as laser aligners or optical sights, to assist technicians in aligning the verticality of the wire harness. Although this method is relatively intuitive, it is still affected by human factors and environmental conditions (such as light, vibration, etc.), which may lead to inaccurate alignment.

[0008] 3. Image analysis: In some cases, technicians will evaluate beam verticality by observing and analyzing the images produced by the X-ray machine. For example, by observing the performance of a specific test phantom in the X-ray image, the verticality of the beam can be indirectly judged. However, this method usually requires extensive experience and expertise, and may be affected by image quality and other factors.

[0009] Therefore, how to adopt a stable and simple structure that is more conducive to detecting the verticality of the wire beam of the X-ray machine has become a technical problem to be solved by the utility model. Utility Model Content

[0010] The technical problem solved by the utility model is to provide a multifunctional X-ray machine quality control detection phantom in view of the defects existing in the above-mentioned prior art, so as to solve the problem that the verticality detection of the wire harness is relatively difficult proposed in the above-mentioned background technology.

[0011] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0012] A multifunctional X-ray machine quality control detection phantom, comprising a substrate;

[0013] The substrate comprises five main areas, and the five main areas comprise an upper left area, an upper right area, a lower left area, a lower right area and a central area;

[0014] The upper left corner area, the upper right corner area, the lower left corner area, and the lower right corner area of ​​the substrate are respectively provided with a first detection phantom, a second detection phantom, a third detection phantom, and a fourth detection phantom;

[0015] A cylinder is fixedly arranged in the central area of ​​the substrate, and two end surfaces of the cylinder are parallel to the front and back surfaces of the substrate respectively;

[0016] Lead balls that match each other are fixedly arranged at the center positions of both ends of the cylinder.

[0017] As a further solution of the utility model, the substrate is made of 3 mm thick acrylic material and has an outer size of 20 cm×30 cm.

[0018] As a further solution of the utility model, the first detection model is a 2 cm thick aluminum plate fixedly set in the upper left corner area of ​​the substrate, and 19 circular holes with a diameter of 1 cm are distributed on the aluminum plate, and the depths of the circular holes are 0.07 mm, 0.11 mm, 0.15 mm, 0.19 mm, 0.22 mm, 0.26 mm, 0.32 mm, 0.36 mm, 0.44 mm, 0.52 mm, 0.88 mm, 1.06 mm, 1.36 mm, 1.48 mm, 1.76 mm, 2.14 mm, 2.5 mm, 2.9 mm and 3.2 mm respectively.

[0019] As a further solution of the utility model, the second detection model is a 20.8 mm thick aluminum plate fixedly set in the upper right corner area of ​​the substrate, with a size of 8 cm×8 cm, and circular holes with a depth of 0.8 mm are distributed on the aluminum plate, and the diameters of the circular holes are 7 mm, 8 mm, 9 mm, 10 mm and 11 mm respectively.

[0020] As a further solution of the present invention, the third detection phantom and the fourth detection phantom are components for high contrast detection that are arranged in cooperation with each other in the lower left corner area and the lower right corner area of ​​the substrate.

[0021] As a further solution of the utility model, a lead scale with an accuracy of mm is provided in both the vertical and horizontal directions of the substrate, and the scales and lines of the lead scale are filled with lead material.

[0022] Compared with the prior art, the beneficial effects of the utility model are: a central position for setting the verticality detection of the wire harness is formed at the center position by means of an array layout, and concentric large circles and small circles, as well as the different positions of two lead balls fixed on the substrate by cylinders are used to affect the comparison and coordination, thereby achieving accurate detection of the verticality of the wire harness, making the structure not only simple but also stable and reliable, effectively improving the accuracy and efficiency of detection.

[0023] At the same time, a relatively large height cylinder is used to provide a larger offset distance between the two lead balls, which is conducive to reflecting slight deviations of the wiring harness and making it easier for technicians to observe and judge.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 It is a structural schematic diagram of the utility model.

[0027] Figure 2 It is a schematic diagram of the structure of the cylinder.

[0028] The reference numerals and names in the figures are as follows:

[0029] Substrate 1, upper left corner area 2, upper right corner area 3, lower left corner area 4, lower right corner area 5, central area 6, first detection model 7, second detection model 8, third detection model 9, fourth detection model 10, cylinder 11, lead ball 12, small circle 13 and large circle 14. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1 —2. In an embodiment of the utility model, a multifunctional X-ray machine quality control detection phantom is characterized by comprising a substrate 1; the substrate 1 comprises five main areas, the five main areas comprising an upper left corner area 2, an upper right corner area 3, a lower left corner area 4, a lower right corner area 5 and a central area 6;

[0032] The upper left corner area 2, the upper right corner area 3, the lower left corner area 4, and the lower right corner area 5 of the substrate 1 are respectively provided with a first detection model 7, a second detection model 8, a third detection model 9 and a fourth detection model 10; a cylinder 11 is fixedly provided in the central area 6 of the substrate 1, and the two end faces of the cylinder 11 are respectively parallel to the front and back sides of the substrate 1; the cylinder 11 has a diameter of 6 cm and a height of 20 cm, is made of acrylic material, is hollow in the middle, and a lead bead 12 with a diameter of 1 mm is inlaid in the center of the top, and a lead bead 12 with a diameter of 1 mm is also inlaid in the center of the bottom; the substrate 1 can be a flat plate made of acrylic material with a thickness of 3 mm, which are all extended implementation methods known to ordinary technicians in this field.

[0033] like Figure 1 As shown, the first detection phantom is a 2 cm thick aluminum plate fixedly set in the upper left corner area of ​​the substrate, and 19 circular holes with a diameter of 1 cm are distributed on the aluminum plate, and the depths of the circular holes are 0.07 mm, 0.11 mm, 0.15 mm, 0.19 mm, 0.22 mm, 0.26 mm, 0.32 mm, 0.36 mm, 0.44 mm, 0.52 mm, 0.88 mm, 1.06 mm, 1.36 mm, 1.48 mm, 1.76 mm, 2.14 mm, 2.5 mm, 2.9 mm and 3.2 mm respectively.

[0034] The second detection model is a 20.8mm thick aluminum plate fixedly set in the upper right corner area of ​​the substrate, with a size of 8cm×8cm. The aluminum plate is distributed with circular holes with a depth of 0.8mm, and the diameters of the circular holes are 7mm, 8mm, 9mm, 10mm and 11mm respectively. At the same time, the substrate 1 can also be directly set with a size of 8cm×8cm. The aluminum plate is distributed with circular holes with a depth of 0.8mm, and the diameters of the circular holes are 7mm, 8mm, 9mm, 10mm and 11mm respectively, so that the upper right corner area 3 of the substrate 1 can be directly used for detecting this item without adding this aluminum plate. At this time, the contrast is 4%, and the diameter of the circular hole that can be distinguished under this contrast can be observed and read. After adding the aluminum plate by means of a snap-on connection, the contrast becomes 2%, and the diameter of the circular hole that can be distinguished under this contrast can be observed and read.

[0035] The third detection model and the fourth detection model are components for high contrast detection which are arranged in cooperation with each other in the lower left corner area and the lower right corner area of ​​the substrate. The third detection model 9 and the fourth detection module 10 are hollow squares with a size of 5.6cm×6.7cm, which can hold high contrast resolution line pair cards. The line pair cards have the same size as the hollow squares, and the substrate can also be hollowed out after rotating 45° to facilitate the placement of the line pair cards after rotating 45°. The thickness of the line pair card substrate is 0.1 mm lead, and the resolution range is 0.6lp / mm-10lp / mm. At the same time, multiple detection models can also realize the detection of multiple items by one model, which increases the convenience of detection and shortens the detection time, that is, the multifunctional feature.

[0036] Lead scales with an accuracy of mm can be set in the vertical and horizontal directions of the substrate, and the scales and lines of the lead scales are filled with lead material.

[0037] When the upper and lower lead beads 12 overlap in the X-ray image, it indicates that the line beam is completely vertical; when the upper lead bead 12 is projected within the preset small circle on the substrate 1, it indicates that the verticality deviation of the line beam is less than 1.5°; when projected within the large circle, it indicates that the verticality deviation of the line beam is less than 3°; when projected outside the large circle, it indicates that the verticality deviation of the line beam is greater than 3°.

[0038] Two concentric circles, namely a small circle 13 and a large circle 14, may be pre-drawn or engraved on the substrate 1 to determine the vertical deviation of the X-ray beam.

[0039] The cylinder 11 is made of acrylic material, which has good X-ray transmittance to ensure that the outline and internal structure of the cylinder are clearly displayed in the X-ray image, thereby facilitating observation and analysis.

[0040] The height of the cylinder 11 is designed to be 20 cm. The cylinder 11 is a hollow cylindrical column. This relatively large height is designed to increase the sensitivity of the beam verticality detection. When the X-ray beam deviates from the plane of the substrate 1, this deviation will be magnified as the beam passes through the height of the cylinder. Therefore, the use of this specific higher cylinder 11 can more accurately reflect the slight deviation of the beam, allowing technicians to observe and judge more easily.

[0041] In addition, the radius of the cylinder 11 is 6 cm, which can ensure that the cylinder occupies enough space in the X-ray image to facilitate observation and analysis, but will not be too large to affect the observation of other detection models.

[0042] By using a relatively large height cylinder 11, the utility model can detect the verticality of the X-ray beam more accurately. This design not only improves the sensitivity and accuracy of the detection, but also provides an intuitive and reliable basis for judgment for technicians. In practical applications, this detection phantom will greatly improve the quality control level of X-ray equipment and ensure that the quality of the beam output by the equipment meets relevant standards and requirements.

[0043] In summary, by using the acrylic cylinder 11 with a relatively large height as the key component of the detection model, not only the detection effect is optimized, but also the sensitivity and accuracy of the detection are improved.

[0044] When used specifically:

[0045] 1. Preparation stage: fix the cylinder 11 at the center of the substrate 1, and the middle part of the outer side of the cylinder 11 is fixedly connected to the substrate 1, so that the two end faces of the cylinder 11 are symmetrical with the substrate 1 as the center, and ensure that the lead balls 12 at the top and bottom of the cylinder 11 are perpendicular to the plane of the substrate 1.

[0046] Ensure that the substrate 1 is placed within the irradiation field of the X-ray device, and adjust the relative position of the device and the substrate 1.

[0047] 2. Testing process:

[0048] The X-ray device is turned on to perform exposure to generate an X-ray image including the cylinder 11 and the substrate 1 .

[0049] Observe the positional relationship between the top and bottom lead balls 12 of the cylinder 11 in the image.

[0050] If the two lead balls 12 completely overlap in the image, it means that the X-ray beam is completely vertical.

[0051] If the top lead ball 12 is projected within the small circle 13 preset on the substrate 1, this means that the verticality deviation of the wire bundle is less than 1.5°.

[0052] If the projection is within the great circle, it means that the verticality deviation of the bundle is less than 3°.

[0053] If the projection is outside the great circle, it means that the verticality of the bundle deviates by more than 3°.

[0054] 3. Result recording and analysis:

[0055] According to the projection position of the lead ball 12, the vertical deviation of the X-ray beam is recorded.

[0056] If the deviation is outside the acceptable range, the X-ray equipment needs to be adjusted or calibrated.

[0057] 4. Cleaning and finishing:

[0058] After the detection is completed, the X-ray equipment is turned off, and the cylinder 11 and the substrate 1 are properly stored for next use. The cylinder 11 and the substrate 1 can be fixedly connected to each other by a snap-fit ​​limit connection, so that the snap-fit ​​limit can be cancelled and disassembled when not in use, so as to achieve the effect of convenient carrying. These are all extended implementation methods that ordinary technicians in this field can know.

[0059] At the same time, the diameter relationship between the small circle 13 and the large circle 14 and the lead ball 12 is: the diameter of the lead ball 12 is 1 mm, the diameter of the small circle 13 is 1 cm, and the diameter of the large circle 14 is 2 cm. The diameters of the small circle and the large circle are usually larger than the diameter of the lead ball 12 so as to accommodate the projection of the lead ball 12 in the X-ray image.

[0060] The functional relationship between the small circle 13 and the large circle 14 and the lead ball 12 is: when the top lead ball 12 is projected into the small circle, it means that the vertical deviation of the wire harness is very small, usually less than 1.5°. This range is determined based on equipment calibration and design parameters to ensure that deviations within this range will not have a significant impact on the test results; when the lead ball 12 is projected into the large circle, it means that the vertical deviation of the wire harness is slightly larger, but still within the acceptable range, usually less than 3°. This larger range provides a buffer area for identifying wire harnesses that are not completely vertical but are still acceptable.

[0061] The substrate 1 is a flat plate with specific marks such as a small circle 13 and a large circle 14, which is used to assist in determining the verticality of the X-ray beam. It is usually made of a material that is opaque to X-rays so that it can be clearly seen in X-ray images.

[0062] The specific scenarios for judging the verticality of the harness by observing the image are as follows:

[0063] 1. Complete overlap: When the two lead balls 12 completely overlap in the X-ray image, it means that the X-ray beam is completely perpendicular to the plane of the substrate 1. This is because the two lead balls 12 are located at the top and bottom of the cylinder 11 respectively. When they overlap, it means that the beam is perpendicular to the substrate 1 from top to bottom.

[0064] 2. Projection in the small circle 13: If the top lead ball 12 is projected in the small circle, it means that the verticality of the harness is slightly deviated, but the deviation angle is less than 1.5°. This is determined by comparing the relationship between the projection position of the lead ball 12 and the boundary of the small circle.

[0065] 3. Projection within the large circle 14: If the lead ball 12 is projected within the large circle but not within the small circle, it means that the verticality of the line bundle deviates slightly, but is still less than 3°. This is also determined by observing the relationship between the projection position of the lead ball 12 and the boundary of the large circle.

[0066] 4. Projection outside the great circle: If the lead ball 12 is projected outside the great circle, it means that the verticality of the harness has deviated by more than 3°. This is a clear indication that the verticality of the harness has exceeded the acceptable range.

[0067] In this way, the technician can quickly and accurately determine whether the verticality of the X-ray beam meets the requirements by observing the relationship between the lead ball 12 and the small circle 13 and the large circle 14 on the substrate 1 in the X-ray image.

[0068] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0069] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A multifunctional X-ray machine quality control detection phantom, characterized in that: including substrates; The substrate comprises five main areas, and the five main areas comprise an upper left area, an upper right area, a lower left area, a lower right area and a central area; The upper left corner area, the upper right corner area, the lower left corner area, and the lower right corner area of ​​the substrate are respectively provided with a first detection phantom, a second detection phantom, a third detection phantom, and a fourth detection phantom; A cylinder is fixedly arranged in the central area of ​​the substrate, and two end surfaces of the cylinder are parallel to the front and back surfaces of the substrate respectively; Lead balls that match each other are fixedly arranged at the center positions of both ends of the cylinder.

2. A multifunctional X-ray machine quality control detection phantom according to claim 1, characterized in that: The substrate is made of 3 mm thick acrylic material and has an outer size of 20 cm×30 cm.

3. The multifunctional X-ray machine quality control detection phantom according to claim 1, characterized in that: The first detection phantom is a 2 cm thick aluminum plate fixedly set in the upper left corner of the substrate, and 19 circular holes with a diameter of 1 cm are distributed on the aluminum plate. The depths of the circular holes are 0.07 mm, 0.11 mm, 0.15 mm, 0.19 mm, 0.22 mm, 0.26 mm, 0.32 mm, 0.36 mm, 0.44 mm, 0.52 mm, 0.88 mm, 1.06 mm, 1.36 mm, 1.48 mm, 1.76 mm, 2.14 mm, 2.5 mm, 2.9 mm and 3.2 mm respectively.

4. The multifunctional X-ray machine quality control detection phantom according to claim 1, characterized in that: The second detection model is a 20.8 mm thick aluminum plate fixedly set in the upper right corner area of ​​the substrate, with a size of 8 cm×8 cm. The aluminum plate is distributed with circular holes with a depth of 0.8 mm, and the diameters of the circular holes are 7 mm, 8 mm, 9 mm, 10 mm and 11 mm respectively.

5. The multifunctional X-ray machine quality control detection phantom according to claim 1, characterized in that: The third detection phantom and the fourth detection phantom are components for high contrast detection that are arranged in cooperation with each other in the lower left corner area and the lower right corner area of ​​the substrate.

6. The multifunctional X-ray machine quality control detection phantom according to claim 1, characterized in that: Lead scales with an accuracy of mm are provided in both the vertical and horizontal directions of the substrate, and the graduations and lines of the lead scales are filled with lead material.

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