Device and method for verifying consistency between imaging center and mechanical center of imaging system

Abstract

The present application relates to a device and method for verifying the consistency between the imaging center and the mechanical center of an imaging system, and relates to the technical field of imaging system auxiliary equipment. The device comprises an operating platform, on which a mechanical center indication component, a mechanical center marking component and an imaging center indication component are provided. The imaging center indication component is connected to an imaging center adjustment mechanism. The mechanical center in the space is found by the mechanical center indication component, and the mechanical center is marked by the mechanical center marking component. The position of the imaging center indication component is adjusted so that the positions marked by the imaging center indication component and the mechanical center marking component coincide. At this time, the imaging system is used to image the imaging object, and the error between the imaging center and the mechanical center is the error of the imaging system. In the subsequent image-guided radiotherapy using the imaging system, the error obtained by the verification can be used to correct the imaging of the imaging system, thereby effectively reducing the imaging error of the imaging system.

Description

Technical Field

[0001] The present application relates to the technical field of imaging system auxiliary equipment, and in particular to a device and method for verifying the consistency between an imaging center and a mechanical center of an imaging system. Background Art

[0002] Image-guided radiotherapy (IGRT) is radiotherapy performed under image guidance. It is a four-dimensional radiotherapy technology that adds the concept of time factor to three-dimensional radiotherapy. Various advanced imaging devices are used to monitor tumors and normal organs in real time before and during treatment. It can correct errors caused by positioning, organ movement, and tumor volume changes during radiotherapy, and can adjust treatment conditions according to changes in organ position so that the irradiation field closely "follows" the target area, enabling truly precise treatment.

[0003] With the clinical application of image-guided radiotherapy technology, the imaging position accuracy of the imaging system is particularly important. The imaging position error of the imaging system mainly comes from the deviation between the imaging center and the mechanical center. Currently, the verification of the imaging center and the mechanical center relies on indoor laser line to align the phantom or tooling, and then image. The image center after imaging is the deviation between the imaging center and the mechanical center. This deviation value is then added to the configuration file of the imaging system, and imaging is performed again until the image center coordinates are the origin coordinates. This method introduces the deviation of the laser line, which will cause the user to always have this deviation when using image guidance, affecting the accuracy of imaging and the treatment effect of radiotherapy. Summary of the Invention

[0004] In order to reduce the imaging error of an imaging system, the present application provides a device and method for verifying the consistency between the imaging center and the mechanical center of an imaging system.

[0005] This application provides a device for verifying the consistency between the imaging center and the mechanical center of an imaging system, which adopts the following technical solution:

[0006] A device for verifying the consistency between the imaging center and the mechanical center of an imaging system includes an operating platform, on which are provided a mechanical center indicating component for indicating the mechanical center in space, a mechanical center marking component for marking the mechanical center, and an imaging center indicating component for indicating the imaging center of the imaging system. The imaging center indicating component is connected to an imaging center adjusting mechanism for adjusting the position of the imaging center indicating component.

[0007] By adopting the above technical solution, the mechanical center in the space is first found using the mechanical center indication component, and it is recorded as the coordinate origin. The mechanical center in the space is marked using the mechanical center marking component, and the imaging center adjustment mechanism is adjusted to adjust the position of the imaging center indication component so that the imaging center indication component and the position marked by the mechanical center marking component coincide with each other. At this time, the imaging system is used to image the imaging object. The error between the coordinates of the imaging center and the coordinate origin is the error of the imaging system. In the subsequent use of the imaging system for image-guided radiotherapy, the error obtained by this verification can be used to correct the imaging of the imaging system, thereby effectively reducing the imaging error of the imaging system.

[0008] Optionally, the mechanical center indication component is configured as a laser tracking measurement component, and the laser tracking measurement component includes a reflector for indicating the mechanical center and a laser tracker;

[0009] The laser tracker is also data-connected to a computer and outputs the spatial position information of the reflector to the computer.

[0010] By adopting the above technical solution, the reflector is placed on the surface of the object, and the reflector is rotated so that the glass mirror of the reflector receives the laser line emitted by the laser tracker. The coordinate value of the center point of the reflector can be displayed in real time on the computer connected to the laser tracker. When the coordinate value displayed by the computer is (0, 0, 0), it means that the center of the reflector coincides with the mechanical center, and the reflector is then positioned to the mechanical center point.

[0011] Optionally, the mechanical center marking assembly includes a first laser marking component and a second laser marking component, and lasers emitted by the first laser marking component and the second laser marking component intersect and form a laser marking point;

[0012] The mechanical center marking assembly also includes a three-dimensional adjustment mechanism, which is configured into two groups. The two groups of three-dimensional adjustment mechanisms are respectively arranged under the first laser marking part and the second laser marking part to adjust the positions of the first laser marking part and the second laser marking part in three-dimensional space.

[0013] By adopting the above technical solution, the positions of the two laser marking parts are precisely adjusted through the three-dimensional adjustment mechanism set under the first laser marking part and the second laser marking part, and then the position of the laser marking point is precisely adjusted to ensure that the position of the laser marking point coincides with the mechanical center point indicated by the mechanical center indication component as much as possible, and the mechanical center in space is marked as accurately as possible to facilitate subsequent operations.

[0014] Optionally, the three-dimensional adjustment mechanism includes a three-dimensional fine-tuning platform, and the three-dimensional fine-tuning platform is provided with a first direction adjustment knob, a second direction adjustment knob and a third direction adjustment knob.

[0015] By adopting the above technical solution, adjusting the knobs in three directions can accurately adjust the motion axis on the three-dimensional fine-tuning platform, thereby fine-tuning the position and posture of the lasers emitted by the first laser marking component and the second laser marking component in three directions, so as to achieve precise positioning and alignment of the laser marking points, and meet the high-precision and high-requirement application requirements of the imaging system accuracy verification.

[0016] Optionally, the imaging center indication assembly includes an indicator, a pointer, and a pointer base, wherein the pointer is arranged in a vertical direction and connects the indicator and the pointer base;

[0017] One end of the pointer connected to the pointer base is provided with a threaded connection section, the pointer base is provided with a threaded connection groove, and the pointer is threadedly connected to the pointer base;

[0018] The pointer base is connected to the imaging center adjustment mechanism.

[0019] By adopting the above technical solution, the degree to which the pointer is screwed into the pointer base can be adjusted by rotating the pointer, and then the height of the pointer in the vertical direction can be adjusted, so that the indicator at the top of the pointer can be flexibly and finely adjusted in height to facilitate accurate indication of the imaging center.

[0020] Optionally, the indicator is spherical, the pointer is conical, and the indicator is arranged at the apex of the pointer;

[0021] A one-way adjustment mechanism is further provided between the pointer base and the imaging center adjustment mechanism, and a horizontal adjustment knob is provided on the one-way adjustment mechanism.

[0022] By adopting the above technical solution, since the indicator is spherical, the center position of the indicator will not be affected when the pointer height is adjusted by rotation, thus avoiding repeated adjustments. The one-way adjustment mechanism provided between the pointer base and the imaging center adjustment mechanism cooperates with the thread adjustment at the bottom of the pointer, which can adjust the position of the pointer, especially the indicator, in three-dimensional space, thereby achieving precise positioning and indication of the imaging center.

[0023] Optionally, the imaging center adjustment mechanism includes a sliding base, a guide rod is provided on the sliding base, a slide is slidably provided on the guide rod, a sliding adjustment knob is provided on the slide for adjusting the position of the slide on the sliding base, and the slide is connected to the reflector base and the pointer base.

[0024] By adopting the above technical solution, the slide can be made to slide on the slide base along the setting direction of the guide rod by rotating the slide adjustment knob, thereby adjusting the position of the slide and thus adjusting the position of the reflector and pointer on the slide.

[0025] Optionally, the sliding base is provided with a scale mark for marking the position of the slide on the sliding base.

[0026] By adopting the above technical solution, the scale mark can conveniently mark the position of the slide on the sliding base during each measurement. When repeatedly testing to verify the deviation between the mechanical center and the imaging center, the repeated debugging and verification operations are reduced, thereby improving the efficiency of the center point consistency test.

[0027] A method for verifying the consistency between an imaging center and a mechanical center of an imaging system comprises the following steps:

[0028] Confirm the mechanical center point in space;

[0029] Mark the mechanical center point in space;

[0030] Place the imaging object on the mechanical center point so that the feature points on the imaging object coincide with the mechanical center point;

[0031] An imaging system is used to image the imaging object to verify the consistency between the imaging center and the mechanical center.

[0032] Optionally, imaging the imaging object using an imaging system to verify consistency between an imaging center and a mechanical center includes:

[0033] Read the coordinates of the mechanical center point in space;

[0034] Using an imaging system to image the imaging object and read the coordinates of the imaging center point;

[0035] The difference between the coordinates of the imaging center point and the coordinates of the mechanical center point is the deviation between the imaging center and the mechanical center.

[0036] By adopting the above technical solution, the mechanical center in the space is first found and recorded as the coordinate origin. The mechanical center in the space is marked by means of laser marking or other means, and the imaging object is placed on the marked mechanical center point. The specific method is to make a certain feature point of the imaging object coincide with the mechanical center point. The feature point needs to have the characteristic of being highlighted in the imaging system to facilitate observation and identification by the operator. At this time, the imaging system is used to image the imaging object, and the coordinates of the feature point are the coordinates of the imaging center. The error between the coordinates of the imaging center and the coordinate origin is the error of the imaging system. In the subsequent use of the imaging system for image-guided radiotherapy, the error obtained by this verification can be used to correct the imaging of the imaging system, effectively reducing the imaging error of the imaging system.

[0037] In summary, this application includes at least one of the following beneficial technical effects:

[0038] 1. Through the imaging system imaging center and mechanical center consistency verification device, use the mechanical center indication component to first find the mechanical center in the space and record it as the coordinate origin. Then use the mechanical center marking component to mark the mechanical center in the space, adjust the imaging center adjustment mechanism and then adjust the position of the imaging center indication component so that the position marked by the imaging center indication component and the mechanical center marking component coincide. At this time, the imaging system is used to image the imaging object. The error between the coordinates of the imaging center and the coordinate origin is the error of the imaging system. In the subsequent use of the imaging system for image-guided radiotherapy, the error obtained by this verification can be used to correct the imaging of the imaging system, effectively reducing the imaging error of the imaging system.

[0039] 2. By setting up multiple sets of adjustment mechanisms, the operator can precisely adjust the position of the indicator and reflector in three-dimensional space, thereby accurately verifying the consistency between the imaging center and the mechanical center, and then accurately correct the imaging in subsequent operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is an overall schematic diagram of this application;

[0041] Figure 2 It is a schematic diagram of the first laser marking member and the three-dimensional adjustment mechanism of the present application;

[0042] Figure 3 It is an overall schematic diagram of the imaging center indication component and the imaging center adjustment mechanism of the present application;

[0043] Figure 4 It is an overall schematic diagram of the pointer of this application;

[0044] Figure 5 It is a flowchart of the steps of this application.

[0045] Figure markings: 0, operating platform; 1, mechanical center indication assembly; 11, reflector; 12, laser tracker; 2, mechanical center marking assembly; 21, first laser marking member; 22, second laser marking member; 23, three-dimensional adjustment mechanism; 231, first direction adjustment knob; 232, second direction adjustment knob; 233, third direction adjustment knob; 3, imaging center indication assembly; 31, indicator member; 32, pointer; 321, threaded connection section; 33, pointer base; 34, one-way adjustment mechanism; 341, horizontal adjustment knob; 4, imaging center adjustment mechanism; 41, sliding base; 42, guide rod; 43, slide; 44, sliding adjustment knob. DETAILED DESCRIPTION

[0046] The present application will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0047] In the following description, for the purpose of explanation, many specific details are set forth in order to provide a thorough understanding of the inventive concepts. Some of the figures in the drawings of the present disclosure, which are part of this specification, represent structures and devices in block diagram form to avoid making the disclosed principles complicated and obscure. For the sake of clarity, not all features of an actual implementation are necessarily described. In addition, the language used in this disclosure has been selected primarily for readability and instructional purposes and may not have been selected to delineate or limit the subject matter of the invention, thereby resorting to the necessary claims to determine such inventive subject matter. References in this disclosure to "one embodiment" or "an embodiment" mean that the specific features, structures or characteristics described in conjunction with that embodiment are included in at least one embodiment, and multiple references to "one embodiment" or "an embodiment" should not be understood to necessarily all refer to the same embodiment.

[0048] Unless expressly limited, the terms "a", "an" and "the" are not intended to refer to a singular entity, but rather to include a general category of which a specific example may be used for illustration. Therefore, the use of the term "a" or "an" may mean any number of at least one, including "one", "one or more", "at least one" and "one or more than one". The term "or" means any of the optional items and any combination of the optional items, including all optional items, unless the optional items are expressly indicated to be mutually exclusive. The phrase "at least one of" when combined with a list of items refers to a single item in the list or any combination of the items in the list. The phrase does not require all of the listed items unless expressly limited to such. The embodiment of the present application discloses a device for verifying the consistency between the imaging center and the mechanical center of an imaging system, with reference to Figure 1 As shown, it includes an operating platform 0, on which a mechanical center indication component 1, a mechanical center marking component 2 and an imaging center indication component 3 are provided. The imaging center indication component 3 is connected to an imaging center adjustment mechanism 4 for adjusting the position of the imaging center indication component 3. The mechanical center in the space is first found by the mechanical center indication component 1, and the mechanical center marking component 2 is used to mark the mechanical center. The imaging center adjustment mechanism 4 is adjusted to adjust the position of the imaging center indication component 3 so that the position marked by the imaging center indication component 3 and the mechanical center marking component 2 coincide with each other. At this time, the imaging system is used to image the imaging object, and the error between the coordinates of the imaging center and the coordinates of the mechanical center is the error of the imaging system. In the subsequent image-guided radiotherapy using the imaging system, the error obtained by the verification can be used to correct the imaging of the imaging system, thereby effectively reducing the imaging error of the imaging system.

[0049] Detailed, such as Figure 1 Combined with Figure 3As shown, in the embodiment of the present application, the mechanical center indication component 1 is configured as a laser tracking measurement component, and the laser tracking measurement component includes a laser tracker 12 and a reflector 11.

[0050] The laser tracker 12 is also data-connected to a computer, and outputs spatial position information of the reflector 11 to the computer. The spatial position information is the coordinate value of the center position of the reflector 11 .

[0051] The reflector 11 is a spherical object with a hollow interior and three mutually perpendicular glass lenses installed inside. When in use, the reflector 11 is placed on the surface of an object. The reflector 11 can be rotated so that the glass mirror of the reflector 11 receives the laser line emitted by the laser tracker 12. The coordinate value of the center point of the reflector 11 can be displayed in real time through software on the computer connected to the laser tracker 12. When the coordinate value displayed by the software is (0,0,0), it means that the center of the reflector 11 coincides with the mechanical center point. The device of the present invention is placed on the treatment bed surface, and the coordinate value of the center of the reflector 11 is made (0,0,0) by moving the treatment bed and coordinating with the real-time display of the coordinates of the reflector 11. In this way, the reflector 11 is positioned to the mechanical center point.

[0052] During use, it is necessary to use a laser tracker 12 to mark the center point of the reflector 11. When the laser is irradiated to the center point of the non-reflector 11, the laser will reflect each other between the three glass lenses, and multiple laser lines will appear. When the laser is irradiated to the center point of the reflector 11, only one laser point will be displayed on the reflector 11. Therefore, by rotating and adjusting the reflector 11, the laser tracker 12 can conveniently and accurately mark the center point of the reflector 11.

[0053] like Figure 1-2 As shown, the mechanical center marking assembly 2 includes a first laser marking element 21 and a second laser marking element 22. The lasers emitted by the first laser marking element 21 and the second laser marking element 22 intersect at a certain angle at the same height to form a laser marking point. In the embodiment of the present application, the first laser marking element 21 and the second laser marking element 22 are both configured as laser pens, which have the advantages of high brightness, long range, and small size. At the same time, the laser beam emitted by the laser pen is a thin line that can be accurately pointed at the target. The two laser pens are preferably arranged orthogonally to facilitate observation and adjustment by the operator.

[0054] The mechanical center marking assembly 2 also includes a three-dimensional adjustment mechanism 23, which is configured into two groups. The two groups of three-dimensional adjustment mechanisms 23 are respectively arranged under the first laser marking part 21 and the second laser marking part 22 to adjust the positions of the first laser marking part 21 and the second laser marking part 22 in three-dimensional space. The three-dimensional adjustment mechanism 23 is specifically configured as a three-dimensional fine-tuning platform. The three-dimensional fine-tuning platform includes a base, a sliding platform in three directions, and also includes a fine-tuning component composed of a fine-tuning screw, a worm gear mechanism, piezoelectric ceramics, etc. It has the advantages of high-precision positioning, multi-axis adjustment, stability and rigidity, and is suitable for applications that require positioning and fine-tuning of small-sized objects.

[0055] The three-dimensional fine-tuning platform is provided with a first direction adjustment knob 231, a second direction adjustment knob 232 and a third direction adjustment knob 233, which are respectively used to adjust the three directions of the X-axis, Y-axis and Z-axis. By rotating the adjustment knobs in the three directions, the position of the laser marking point can be accurately adjusted to ensure that the position of the laser marking point coincides with the mechanical center point indicated by the mechanical center indication component 1 as much as possible, and the mechanical center in the space is marked as accurately as possible, which facilitates subsequent operations to meet the high-precision and high-requirement application requirements of the imaging system accuracy verification.

[0056] like Figure 3-4 As shown, the imaging center indication assembly 3 includes an indicator 31, a pointer 32 and a pointer base 33. The pointer 32 is arranged in the vertical direction to connect the indicator 31 and the pointer base 33. A threaded connection section 321 is provided at one end where the pointer 32 is connected to the pointer base 33. A threaded connection groove is provided on the pointer base 33. The pointer 32 is threadedly connected to the pointer base 33. The degree to which the pointer 32 is screwed into the pointer base 33 can be adjusted by rotating the pointer 32, thereby adjusting the height of the pointer 32 in the vertical direction, so that the indicator 31 at the top of the pointer 32 can be flexibly and finely adjusted in height.

[0057] The pointer base 33 is connected to the imaging center adjustment mechanism 4 , and the spatial position of the imaging center indication component 3 can be adjusted as a whole by adjusting the imaging center adjustment mechanism 4 .

[0058] Specifically, such as Figure 4 As shown, the indicator 31 is spherical, and the pointer 32 is conical, supporting the indicator 31. The pointer 32 can also have other shapes, such as cylindrical, cubic, or hexahedron. It is particularly important to note that the material density of the indicator 31 must be higher than that of the pointer 32 supporting it, so that the coordinates of the center point of the indicator 31 can be read on the image after imaging. In this embodiment of the present application, the spherical indicator 31 is made of metal, but other higher-density materials can also be used.

[0059] The indicator 31 is set at the top of the pointer 32. Since the indicator 31 is spherical, the center of the sphere is the imaging center indicated by the indicator 31. When the height of the pointer 32 is rotated to adjust, the center position of the indicator 31 will not be affected, avoiding repeated adjustments and improving verification efficiency.

[0060] In other embodiments, the indicator 31 may also be configured as an intersection formed by two or more metal segments, as long as the imaging center position can be conveniently indicated in the imaging system.

[0061] like Figure 3 As shown, a one-way adjustment mechanism 34 is further provided between the pointer base 33 and the imaging center adjustment mechanism 4. The one-way adjustment mechanism 34 is configured as a one-way fine-tuning platform. A horizontal adjustment knob 341 is provided on the one-way fine-tuning platform, which can adjust the precise position of the pointer 32 and the indicator 31 in the straight line direction. Combined with the height adjustment of the pointer 32 itself, precise positioning and indication of the imaging center can be achieved.

[0062] like Figure 3 As shown, the imaging center adjustment mechanism 4 includes a sliding base 41, on which a guide rod 42 is provided. A slide 43 is slidably provided on the guide rod 42. The slide 43 is provided with a slide adjustment knob 44 for adjusting the position of the slide 43 on the sliding base 41. The slide 43 is connected to the base of the reflector 11 and the pointer base 33. By rotating the slide adjustment knob 44, the slide 43 can be slid on the sliding base 41 along the direction in which the guide rod 42 is set, thereby adjusting the position of the slide 43 and thus adjusting the position of the reflector 11 and the pointer 32 on the slide 43.

[0063] In order to reduce the repeated debugging and verification operations when repeatedly testing and verifying the deviation between the mechanical center and the imaging center, and to improve the efficiency of the center point consistency test, a scale mark is provided on the sliding base 41 to mark the position of the slide 43 on the sliding base 41. The scale mark is convenient for marking the position of the slide 43 on the sliding base 41 during each measurement, and is also convenient for recording each time the consistency is verified.

[0064] A method for verifying the consistency between the imaging center and the mechanical center of an imaging system, such as Figure 5 Combined with Figure 1 As shown, the following steps are included:

[0065] S1. Confirm the mechanical center point in space. Through the cooperation of the laser tracker 12 and the reflector 11, find the mechanical center point in space and record it as the coordinate origin. Specifically, place the reflector 11 on the surface of the object, rotate the reflector 11 so that the glass mirror of the reflector 11 receives the laser line emitted by the laser tracker 12, and then the coordinate value of the center point of the reflector 11 can be displayed in real time on the software of the laser tracker 12. When the coordinate value displayed by the software is (0,0,0), it means that the center of the reflector 11 coincides with the mechanical center point. Place this device on the treatment bed, and by moving the treatment bed and coordinating with the real-time display of the coordinates of the reflector 11, make the center coordinate value of the reflector 11 (0,0,0). In this way, the reflector 11 is positioned to the mechanical center point on the treatment bed.

[0066] S2. Mark the mechanical center point in space. Mark the mechanical center point in space by means of laser marking or other means. Laser marking specifically uses two intersecting laser lines to reflect the spatial position of the mechanical center point. When the laser lines emitted by the two laser pens hit the glass mirror on the reflector 11, the feedback of the laser point in the reflector 11 can be used to determine whether it hits the center of the reflector 11. When the laser line does not hit the center of the reflector 11, three points will appear on the three glass mirrors of the reflector 11. Only when the laser line hits the center of the reflector 11 will one point appear. This method can be used to determine whether it hits the center of the reflector 11. By adjusting the three-dimensional fine-tuning platform, the position of the laser pen can be adjusted. The first direction adjustment knob 231, the second direction adjustment knob 232, and the third direction adjustment knob 233 on the three-dimensional fine-tuning platform can be used to make the laser lines emitted by the two laser pens hit the center point of the reflector 11, that is, to find the mechanical center point of S1.

[0067] S3. Place the imaging object on the mechanical center point so that the feature point on the imaging object coincides with the mechanical center point. In this embodiment, pointer 32 is the imaging object, and the metal ball indicator 31 at the top of pointer 32 is the feature of pointer 32. The center of the metal ball on pointer 32 can be adjusted to coincide with the mechanical center point by adjusting the X-axis direction using the slide adjustment knob 44 of the slide base 41, adjusting the Y-axis direction using the horizontal adjustment knob 341 of the one-way adjustment mechanism 34, and rotating the threaded connection section 321 of pointer 32 to adjust the Z-axis direction.

[0068] Specifically, the metal ball on the pointer 32 is adjusted to the intersection of the laser line. Before adjusting, the reflector 11 can be removed to avoid blocking the laser line.

[0069] S4. Use an imaging system to image the imaging object and verify the consistency between the imaging center and the mechanical center.

[0070] S4 specifically includes the following steps:

[0071] S41. Read the coordinates of the mechanical center point in the space.

[0072] S42: Use an imaging system to image the imaging object and read the coordinates of the imaging center point.

[0073] S43. The difference between the coordinates of the imaging center point and the coordinates of the mechanical center point is the deviation between the imaging center and the mechanical center. In the subsequent use of the imaging system for image-guided radiotherapy, the error obtained by this verification can be used to correct the imaging of the imaging system, effectively reducing the imaging error of the imaging system.

[0074] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for verifying the consistency between the imaging center and the mechanical center of an imaging system, characterized in that: The invention comprises an operating platform (0), wherein the operating platform (0) is provided with a mechanical center indicating component (1) for indicating a mechanical center in a space, a mechanical center marking component (2) for marking the mechanical center, and an imaging center indicating component (3) for indicating an imaging center of an imaging system, wherein the imaging center indicating component (3) is connected to an imaging center adjusting mechanism (4) for adjusting the position of the imaging center indicating component (3); The mechanical center indicating component (1) is configured as a laser tracking measurement component, and the laser tracking measurement component includes a reflector (11) for indicating the mechanical center and a laser tracker (12); The laser tracker (12) is also data-connected to a computer and outputs spatial position information of the reflector (11) to the computer; The mechanical center marking component (2) comprises a first laser marking component (21) and a second laser marking component (22), wherein lasers emitted by the first laser marking component (21) and the second laser marking component (22) intersect and form a laser marking point; The mechanical center marking assembly (2) further includes a three-dimensional adjustment mechanism (23), wherein the three-dimensional adjustment mechanism (23) is configured as two groups, and the two groups of the three-dimensional adjustment mechanism (23) are respectively arranged below the first laser marking part (21) and the second laser marking part (22), and adjust the positions of the first laser marking part (21) and the second laser marking part (22) in three-dimensional space; The imaging center indication assembly (3) comprises an indication member (31), a pointer (32) and a pointer base (33); the pointer (32) is arranged in a vertical direction and connects the indication member (31) and the pointer base (33); One end of the pointer (32) connected to the pointer base (33) is provided with a threaded connection section (321), and a threaded connection groove is provided on the pointer base (33), and the pointer (32) and the pointer base (33) are threadedly connected; The pointer base (33) is connected to the imaging center adjustment mechanism (4).

2. The device for verifying consistency between the imaging center and the mechanical center of an imaging system according to claim 1, characterized in that: The three-dimensional adjustment mechanism (23) comprises a three-dimensional fine-tuning platform, on which a first direction adjustment knob (231), a second direction adjustment knob (232), and a third direction adjustment knob (233) are arranged.

3. The device for verifying consistency between the imaging center and the mechanical center of an imaging system according to claim 1, characterized in that: The indicator (31) is spherical, the pointer (32) is conical, and the indicator (31) is arranged at the vertex of the pointer (32); A one-way adjustment mechanism (34) is further provided between the pointer base (33) and the imaging center adjustment mechanism (4), and a horizontal adjustment knob (341) is provided on the one-way adjustment mechanism (34).

4. The device for verifying consistency between the imaging center and the mechanical center of an imaging system according to claim 1, characterized in that: The imaging center adjustment mechanism (4) comprises a sliding base (41), a guide rod (42) is provided on the sliding base (41), a slide table (43) is slidably passed through the guide rod (42), a sliding adjustment knob (44) for adjusting the position of the slide table (43) on the sliding base (41) is provided on the slide table (43), and the slide table (43) is connected to the base of the reflector (11) and the pointer base (33).

5. The device for verifying consistency between the imaging center and the mechanical center of an imaging system according to claim 4, characterized in that: The sliding base (41) is provided with a scale mark for marking the position of the slide (43) on the sliding base (41).

6. A method for verifying the consistency between an imaging center and a mechanical center of an imaging system, using the apparatus for verifying the consistency between an imaging center and a mechanical center of an imaging system as claimed in claim 1, characterized in that: The following steps are involved: Confirm the mechanical center point in space; Mark the mechanical center point in space; Place the imaging object on the mechanical center point so that the feature points on the imaging object coincide with the mechanical center point; An imaging system is used to image the imaging object to verify the consistency between the imaging center and the mechanical center.

7. The method for verifying consistency between the imaging center and the mechanical center of an imaging system according to claim 6, characterized in that: The imaging system is used to image the imaging object and verify the consistency between the imaging center and the mechanical center, including: Read the coordinates of the mechanical center point in space; Using an imaging system to image the imaging object and read the coordinates of the imaging center point; The difference between the coordinates of the imaging center point and the coordinates of the mechanical center point is the deviation between the imaging center and the mechanical center.

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