Optically based flat-panel cone-beam ct imaging assembly precision alignment apparatus and method

Abstract

The application discloses a kind of based on optical flat panel cone beam CT imaging component precision installation and method, including horizontal plate, the upper and lower ends of the inside of the horizontal plate are fixedly installed with mark card plate, the right end of the inside of the horizontal plate is fixedly installed with fixed plate, the upper and lower ends of the inside of the fixed plate are fixedly installed with driving rod, the inside of the driving rod is fixedly installed with light projector, the left end of the fixed plate is fixedly installed with detection plate, the upper and lower ends of the inside of the detection plate are fixedly installed with electric capacity device.One kind of based on optical flat panel cone beam CT imaging component precision installation and method, by being fixedly installed in the inside of fixed plate before installation and adjustment with light projector, then again fixedly installing detection plate in the inside of horizontal plate, finally cooperate with the light of light projector and judge whether it can be from one end of detection plate to the other end, to judge whether light projector is located on the center line of horizontal plate, to reach the effect of convenient adjustment level.

Description

[0001] This application is a divisional application of the patent application filed on November 13, 2020, with application number 202011274855.5 and invention title "A Precision Assembly and Adjustment Device and Method for an Optical Flat Panel Cone-Beam CT Imaging Assembly". Technical Field

[0002] This invention relates to the field of medical devices, and in particular to a precision assembly and adjustment device and method for an optical-based flat-panel cone-beam CT imaging assembly. Background Technology

[0003] Computed tomography (CT) technology, also known as computed tomography, is one of the important hallmarks of medical progress in the 20th century in clinical medicine. Since its inception, CT scanning methods have undergone tremendous changes. Two-dimensional CT has evolved from parallel beam scanning with a single detector to multi-detector fan-beam rotating scanning. Due to the great progress of cone-beam CT, its production and deployment have become particularly important.

[0004] A flat-panel cone-beam CT scanner mainly consists of an X-ray source and a flat-panel detector. Desktop flat-panel cone-beam CT scanners also include a stage. During the setup and adjustment of a flat-panel cone-beam CT scanner, the centerline of the X-ray source needs to be perpendicularly incident on the center of the flat-panel detector at a designed distance. This requires that the center points of the two be aligned in the horizontal and vertical directions, and that their planes be parallel. In addition, for desktop flat-panel cone-beam CT scanners, the center of the object or stage must coincide with the axis of rotation. However, currently, these requirements can only be met by manual measurement and adjustment during setup and adjustment, which has a large error and is cumbersome.

[0005] In response to the problems mentioned above, there is an urgent need for a precision assembly and adjustment device and method for an optical flat cone-beam CT imaging component. Summary of the Invention

[0006] The purpose of this invention is to solve the above-mentioned problems by designing a precision assembly and adjustment device and method for an optical flat cone-beam CT imaging component.

[0007] The technical solution of the present invention to achieve the above objectives is a precision assembly and adjustment device and method for an optical flat cone-beam CT imaging component, characterized by comprising the following method steps:

[0008] S1. Turn on the level and align the center of the X-ray source and the center of the detector with the help of horizontal and vertical light rays respectively;

[0009] S2. Place two plane mirrors onto the detector to reflect horizontal and vertical light rays respectively;

[0010] S3. The distance between the radiation source and the detector must be measured vertically. With the help of horizontal and vertical light rays, the distance can be measured accurately when the measuring tape coincides with the light rays.

[0011] S4. The rotation axis of the stage, the center of the detector, and the center of the X-ray source are collinear. With the help of horizontal light, the stage can be quickly positioned, and with the help of a ruler, the distance of the stage can be accurately set.

[0012] As an optimization: the level in S1 can emit both horizontal and vertical light rays.

[0013] As an optimization: S2 uses the coincidence of the reflected light from a distance with the incident light to determine and adjust the parallelism between the X-ray source and the flat panel detector.

[0014] As an optimization: if the measured distance of S3 does not match the design distance, it can be adjusted with the aid of light.

[0015] As an optimization: the distance between the stage rotation axis and the focal point of the X-ray source in S4 is a fixed value.

[0016] A precision assembly and adjustment device for an optically based flat-panel cone-beam CT imaging assembly includes a horizontal plate. Marking plates are fixedly installed at both the upper and lower ends of the horizontal plate. A fixing plate is fixedly installed at the right end of the horizontal plate. A drive rod is fixedly installed at both the upper and lower ends of the fixing plate. A light emitter is fixedly installed inside the drive rod. A detection plate is fixedly installed at the left end of the fixing plate. Capacitors are fixedly installed at both the upper and lower ends of the detection plate. An adjustment plate is fixedly installed at the left end of the fixing plate. A fixing ring is fixedly installed inside the adjustment plate. Plane mirrors are fixedly installed at both the upper and lower ends of the fixing ring. A symmetrically distributed photoresistor is fixedly installed at the left end of the fixing ring. A magnetic wheel is fixedly connected inside the adjustment plate.

[0017] As an optimization: the photoresistors are designed in parallel, and the connection between the photoresistors and the capacitor device is electrical. Before assembly and adjustment, the light emitter is fixedly installed inside the fixed plate, and then the detection plate is fixedly installed inside the horizontal plate. Finally, the light emitted by the light emitter is used to determine whether it can be emitted from one end of the detection plate to the other end, thereby determining whether the light emitter is located on the center line of the horizontal plate, thus achieving the effect of conveniently adjusting the level.

[0018] As an optimization: Electrode plates are fixedly installed inside each capacitor device. Capacitor plates are movably installed inside each electrode plate via a return spring. The capacitor plates are electrically connected to the drive rod. After the light emitter is adjusted, the light emitted from the emitter illuminates the inside of the fixed ring. After reflection by the plane mirror, it strikes a photoresistor. Because the photoresistors have different resistance values, the voltage across the circuit differs depending on the photoresistor. This voltage difference causes the magnetic wheel inside the adjustment plate to rotate. The magnetic wheel drives the adjustment plate to move inside the horizontal plate, thereby aligning the rotation center axis with the light emitter at the same level, achieving automatic adjustment and eliminating the need for manual adjustment.

[0019] The present invention has the following beneficial effects:

[0020] 1. An optical-based precision assembly and adjustment device and method for a flat-panel cone-beam CT imaging assembly, which ensures that the center of the rotation axis and the center of the stage are on the same level during the adjustment process by optical reflection and linear illumination. Then, the distance between the X-ray source and the detector is determined by scale, thereby achieving the effect of precisely assembling the required equipment.

[0021] 2. A precision assembly and adjustment device and method for an optical flat cone-beam CT imaging component, wherein the device to be emitted is fixedly installed inside the fixed plate before assembly and adjustment, and then the detection plate is fixedly installed inside the horizontal plate. Finally, the light emitted by the emitter is used to determine whether it can be emitted from one end of the detection plate to the other end, thereby determining whether the emitter is located on the center line of the horizontal plate, thus achieving the effect of conveniently adjusting the level.

[0022] 3. A precision assembly and adjustment device and method for an optically based flat-panel cone-beam CT imaging component, wherein after the light emitter is adjusted, the light emitted by the light emitter illuminates the inside of the fixed ring, and after being reflected by the plane mirror, it hits the photoresistors. Because the resistance values ​​of the photoresistors are different, the voltage in the circuit is different when the light hits different photoresistors. Therefore, according to the difference in voltage, the magnetic wheel inside the adjustment plate rotates. The magnetic wheel drives the adjustment plate to move inside the horizontal plate, thereby adjusting the rotation center axis to be at the same level as the light emitter, achieving automatic adjustment and eliminating the need for manual adjustment. Attached Figure Description

[0023] Figure 1 This is a front view of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the fixed ring structure of the present invention;

[0025] Figure 3 This is the present invention. Figure 1 Enlarged schematic diagram of structure A in the middle;

[0026] Figure 4 This is an overall schematic diagram of the assembled structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the connection relationship of the photoresistor structure of the present invention.

[0028] In the diagram, 1. Horizontal plate; 2. Marking plate; 3. Fixing plate; 4. Drive rod; 5. Light emitter; 6. Detection plate; 7. Capacitor device; 8. Adjustment plate; 9. Fixing ring; 10. Plane mirror; 11. Photoresistor; 12. Magnetic wheel. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1:

[0031] A precision assembly and adjustment device and method for an optical-based flat-panel cone-beam CT imaging module, comprising the following steps:

[0032] S1. Turn on the level and align the center of the X-ray source and the center of the detector with the help of horizontal and vertical light rays respectively;

[0033] S2. Place two plane mirrors onto the detector to reflect horizontal and vertical light rays respectively;

[0034] S3. The distance between the radiation source and the detector should be measured vertically. With the help of a horizontal beam and the light source, the distance can be measured accurately when the measuring tape coincides with the light source.

[0035] S4. The rotation axis of the stage, the center of the detector, and the center of the X-ray source are collinear. With the help of horizontal light, the stage can be quickly positioned, and with the help of a ruler or tape measure, the distance between the stage and the object can be accurately determined.

[0036] As an optimization: the level in S1 can emit both horizontal and vertical light rays.

[0037] As an optimization: S2 uses the coincidence of the reflected light from a distance with the incident light to determine and adjust the parallelism between the X-ray source and the flat panel detector.

[0038] As an optimization: if the measured distance of S3 does not match the design distance, it can be adjusted with the aid of light.

[0039] As an optimization: the distance between the stage rotation axis and the focal point of the X-ray source in S4 is the design value.

[0040] Example 2:

[0041] A precision assembly and adjustment device and method for an optical-based flat-panel cone-beam CT imaging module, comprising the following steps:

[0042] S1. Use a gourd flute to suspend the level and place it between the radiation source and the detector, or use a tripod to set up two levels, then turn on the level and use horizontal and vertical light rays to align the center of the radiation source and the center of the detector.

[0043] S2. Place two plane mirrors onto the detector to reflect horizontal and vertical light rays respectively;

[0044] S3. The distance between the radiation source and the detector should be measured vertically. With the help of a horizontal beam and the light source, the distance can be measured accurately when the measuring tape coincides with the light source.

[0045] S4. The rotation axis of the stage, the center of the detector, and the center of the X-ray source are collinear. With the help of horizontal light, the stage can be quickly positioned, and with the help of a ruler or tape measure, the distance between the stage and the object can be accurately determined.

[0046] As an optimization: the level in S1 can emit both horizontal and vertical light rays.

[0047] As an optimization: S2 uses the coincidence of the reflected light from a distance with the incident light to determine and adjust the parallelism between the X-ray source and the flat panel detector.

[0048] As an optimization: if the measured distance of S3 does not match the design distance, it can be adjusted with the aid of light.

[0049] As an optimization: the distance between the stage rotation axis and the focal point of the X-ray source in S4 is the design value.

[0050] Please refer to Figure 1-5A precision assembly and adjustment device for an optically based flat-panel cone-beam CT imaging assembly includes a horizontal plate 1. Marking plates 2 are fixedly installed at both the upper and lower ends of the horizontal plate 1. A fixing plate 3 is fixedly installed at the right end of the horizontal plate 1. A drive rod 4 is fixedly installed at both the upper and lower ends of the fixing plate 3. A light emitter 5 is fixedly installed inside the drive rod 4. A detection plate 6 is fixedly installed at the left end of the fixing plate 3. A capacitor device 7 is fixedly installed at both the upper and lower ends of the detection plate 6. An electrode plate is fixedly installed inside the capacitor device 7. A capacitor plate is movably mounted inside the electrode plate via a return spring. The capacitor plate is electrically connected to the drive rod 4. After adjusting the light emitter 5, the light emitted by the light emitter 5 illuminates the interior of a fixed ring 9. After reflection by a plane mirror 10, it strikes a photoresistor 11. Because the resistance of the photoresistors 11 varies, the voltage across different photoresistors 11 varies. Therefore, based on the voltage difference, the magnetic wheel inside the adjustment plate 8 is adjusted. The magnetic wheel 12 rotates, causing the adjustment plate 8 to move inside the horizontal plate 1, thereby adjusting the rotation center axis to be on the same level as the light emitter 5, achieving automatic adjustment and eliminating the need for manual adjustment. The adjustment plate 8 is fixedly installed on the left end inside the fixed plate 3. The fixed ring 9 is fixedly installed inside the adjustment plate 8. Plane mirrors 10 are fixedly installed at both the upper and lower ends inside the fixed ring 9. Photoresistors 11 are symmetrically distributed and connected in parallel. The photoresistors 11 are electrically connected to the capacitor device 7. By fixing the light emitter 5 inside the fixed plate 3 before installation and adjustment, and then fixing the detection plate 6 inside the horizontal plate 1, the light emitted by the light emitter 5 can be used to determine whether it can be emitted from one end of the detection plate 6 to the other end, thereby determining whether the light emitter 5 is located on the center line of the horizontal plate 1, thus achieving the effect of convenient adjustment of the level. The magnetic wheel 12 is fixedly connected inside the adjustment plate 8.

[0051] Working principle: Before assembly and adjustment, the light emitter 5 is fixedly installed inside the fixed plate 3, and then the detection plate 6 is fixedly installed inside the horizontal plate 1. Finally, the light emitted by the light emitter 5 is used to determine whether it can be projected from one end of the detection plate 6 to the other end, thereby determining whether the light emitter 5 is located on the center line of the horizontal plate 1, thus achieving the effect of conveniently adjusting the level. After the light emitter 5 is adjusted, the light emitted by the light emitter 5 shines into the interior of the fixed ring 9. After being reflected by the plane mirror 10, it hits the photoresistor 11. Because the resistance of the photoresistors 11 is different, the voltage in the circuit is different when hitting different photoresistors 11. Therefore, according to the difference in voltage, the magnetic wheel 12 inside the adjustment plate 8 rotates. The magnetic wheel 12 drives the adjustment plate 8 to move inside the horizontal plate 1, thereby adjusting the rotation center axis to be on the same level as the light emitter 5, achieving automatic adjustment and eliminating the need for manual adjustment.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision assembly and adjustment device for an optically based flat cone-beam CT imaging assembly, comprising a horizontal plate (1), characterized in that: Marking plates (2) are fixedly installed at both the top and bottom ends inside the horizontal plate (1). A fixing plate (3) is fixedly installed at the right end inside the horizontal plate (1). A driving rod (4) is fixedly installed at both the top and bottom ends inside the fixing plate (3). A light emitter (5) is fixedly installed inside the driving rod (4). A detection plate (6) is fixedly installed at the left end of the fixing plate (3). A capacitor device (7) is fixedly installed at both the top and bottom ends inside the detection plate (6). An electrode plate is fixedly installed inside the capacitor device (7). The electrode plate is internally connected to a multi-electrode circuit. A capacitor plate is movably mounted on a spring. The capacitor plate is electrically connected to the drive rod (4). After the light emitter (5) is adjusted, the light emitted by the light emitter 5 shines into the interior of the fixed ring (9). After being reflected by the plane mirror (10), it hits the photoresistor (11). Since the resistance values ​​of the photoresistors (11) are different, the voltage in the circuit is different when the light hits different photoresistors (11). Therefore, according to the different voltages, the magnetic wheel (12) inside the adjustment plate (8) rotates. The magnetic wheel (12) drives the adjustment plate (8) to rotate. The rotation center axis can be moved inside the horizontal plate (1) so that it can be adjusted to be on the same level as the light emitter (5), achieving automatic adjustment and eliminating the need for manual adjustment. An adjustment plate (8) is fixedly installed at the left end inside the fixed plate (3). A fixed ring (9) is fixedly installed inside the adjustment plate (8). Plane mirrors (10) are fixedly installed at both the upper and lower ends inside the fixed ring (9). Photoresistors (11) are symmetrically distributed inside the fixed ring (9). The photoresistors (11) are connected in parallel. The photoresistor (11) and the capacitor (7) are electrically connected. Before installation, the light emitter (5) is fixedly installed inside the fixed plate (3), and then the detection plate (6) is fixedly installed inside the horizontal plate (1). Finally, the light emitted by the light emitter (5) is used to determine whether it can be emitted from one end of the detection plate (6) to the other end, so as to determine whether the light emitter (5) is located on the center line of the horizontal plate (1), thereby achieving the effect of conveniently adjusting the level. The inside of the adjustment plate (8) is fixedly connected with a magnetic wheel (12). The working principle is to fix the light emitter (5) inside the fixed plate (3) before installation and adjustment, and then fix the detection plate (6) inside the horizontal plate (1). Finally, the light emitted by the light emitter (5) is used to determine whether it can be emitted from one end of the detection plate (6) to the other end, thereby determining whether the light emitter (5) is located on the center line of the horizontal plate (1), thus achieving the effect of convenient adjustment of the level. After the light emitter (5) is adjusted, the light emitted by the light emitter (5) illuminates the inner ring (9). The part, after being reflected by the plane mirror (10), will hit the photoresistor (11). Then, because the resistance of the photoresistor (11) is different, the voltage in the circuit is different when it hits different photoresistors (11). Therefore, according to the different voltages, the magnetic wheel (12) inside the adjustment plate (8) will rotate. The magnetic wheel (12) drives the adjustment plate (8) to move inside the horizontal plate (1), so that the rotation center axis can be adjusted to be on the same level as the light emitter (5), achieving automatic adjustment and eliminating the need for manual adjustment.

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