X-ray intelligent photographing device and method after vertebroplasty
By intelligently identifying and adjusting the emission angle of the X-ray device, the problem of deviation in the lateral imaging angle after vertebral fixation surgery was solved, achieving efficient and low-radiation standard image acquisition.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WEST CHINA HOSPITAL SICHUAN UNIV
- Filing Date
- 2023-10-30
- Publication Date
- 2026-07-24
AI Technical Summary
When taking lateral X-rays after vertebral fixation surgery, patients have difficulty adjusting their body posture, leading to deviations in the shooting angle, affecting the standardization of the image, increasing detection efficiency and patient radiation exposure.
The intelligent X-ray imaging device used after vertebral fixation surgery automatically adjusts the emission angle of the X-ray generator by identifying the deviation angle of the area to be photographed, so as to achieve standard lateral image taking without the need for the patient to adjust their body posture.
This improved imaging efficiency, reduced the radiation exposure to patients, and ensured the standardization of lateral images of the spinal screws.
Smart Images
Figure CN117481678B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of medical imaging service technology, specifically relating to an intelligent X-ray imaging device and method after vertebral fixation surgery, and the imaging method thereof. Background Technology
[0002] Vertebral fixation surgery is mainly used for conditions such as scoliosis. It involves surgically implanting bone screws into the spine to fix their relative positions.
[0003] After vertebral fixation surgery, regular X-rays are needed to check the fixation status of the vertebrae and the healing of the wound. Both anteroposterior (AP) and lateral views are required. AP views are very convenient; the patient simply lies supine on the imaging table with the spine against the surface, allowing for a vertical image. However, in lateral views, because the patient lies on their side with the shoulder, chest, lower back, and buttocks against the bed, the distance between the sides of the neck, shoulder, chest, lower back, and buttocks and the spine varies, causing an S-shaped curvature of the spine. Except for the vertebrae at the crests and troughs, which are parallel to the imaging plane, the rest of the spine forms an acute angle with the plane, resulting in an inaccurate imaging angle. This prevents the two opposing spinal screws from aligning, thus failing to obtain a standard lateral view.
[0004] To obtain the most accurate images possible, patients need to lie on their side and forcefully straighten their lower back or neck to align the area being photographed with the imaging plane. However, patients often have inaccurate control over the force applied; insufficient or excessive force will result in inaccurate images, requiring adjustments and re-shooting. For medical staff, this is inefficient; for patients, it exposes them to additional radiation from multiple imaging sessions. For patients who have just undergone surgery or have muscle weakness, they cannot adjust themselves and must rely on cushions for support, further reducing efficiency and potentially increasing radiation exposure. Summary of the Invention
[0005] To address the aforementioned problems in existing technologies, this invention aims to provide an intelligent X-ray imaging device and method for vertebral fixation surgery. By intelligently identifying the deviation angle of the area to be imaged, the device adjusts the emission angle of the X-ray generator, thereby enabling the device to automatically capture standard lateral images of the vertebrae without requiring the patient to adjust their posture. Using this device significantly improves imaging efficiency while minimizing the radiation dose received by the patient.
[0006] The primary objective of this invention is to disclose an intelligent X-ray imaging device for post-vertebral fixation surgery, comprising a bed for the patient to lie on, wherein an X-ray receiving device is embedded in the bed; and a column, wherein a crossbar is mounted on the column, and an X-ray generating device is mounted on the crossbar, wherein the X-ray generating device is rotatable about the axis of the crossbar, and the X-ray generating device is located above the X-ray receiving device.
[0007] Preferably, the bed or column is mounted on a horizontally arranged guide rail.
[0008] Furthermore, the upright has a longitudinally arranged sliding groove, and the crossbar cooperates with the sliding groove to move longitudinally along the sliding groove; or the bed body can be raised and lowered.
[0009] Preferably, the crossbar is perpendicular to the guide rail, and the X-ray generator can move along the axial direction of the crossbar.
[0010] Furthermore, the X-ray receiving device is laid horizontally inside the bed.
[0011] A second objective of this invention is to disclose a photographic method using the aforementioned apparatus, comprising the following steps:
[0012] Obtain or input patient spinal screw feature data;
[0013] The first lateral view of the spinal screws was taken;
[0014] The deviation angle is obtained through image processing;
[0015] The X-ray generator is corrected based on the deviation angle;
[0016] The second imaging session yielded a lateral view of the spinal screws.
[0017] The second lateral view of the spinal screw is corrected according to the aforementioned deviation angle to obtain a standard lateral view of the spinal screw.
[0018] Preferably, spinal screw feature data is obtained by taking an anteroposterior image of the patient's spinal screw.
[0019] Furthermore, the spinal screw feature data includes the distance h0 between the screw tips; the first lateral image of the spinal screw is taken to obtain the projected distance h1 between the screw tips; the deviation angle α = arcsin
[0020]
[0021] Preferably, the second lateral view of the spinal screw has a horizontal length of L1. The second lateral view of the spinal screw is then compressed horizontally by a compression ratio of [value missing].
[0022] The beneficial effects of this invention are as follows:
[0023] The intelligent X-ray imaging device disclosed in this invention for post-vertebral fixation surgery intelligently identifies the deviation angle of the area to be imaged and adjusts the emission angle of the X-ray generator accordingly. This allows the device to automatically capture standard lateral images of the vertebrae without requiring the patient to adjust their posture. Using this device significantly improves imaging efficiency while minimizing the radiation dose received by the patient.
[0024] The intelligent X-ray imaging method disclosed in this invention can automatically and quickly calculate the deviation angle of the area to be imaged on the patient, and correct the imaging angle by adjusting the emission angle of the X-ray generator, thereby efficiently capturing a standard lateral image of the spinal screw.
[0025] For more details on the beneficial effects, please refer to the specific implementation method. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of a spinal screw in anteroposterior view.
[0027] Figure 2 This is a schematic diagram of a lateral view of a spinal screw.
[0028] Figure 3 This is a schematic diagram of the structure of Embodiment 1 of the present invention;
[0029] Figure 4 This is a schematic diagram of the principle of Example 1;
[0030] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention;
[0031] Figure 6 This is a standard lateral view photographic illustration of spinal screws;
[0032] Figure 7 This is a schematic diagram of a lateral view of a spinal screw.
[0033] Figure 8 yes Figure 7 Enlarged annotation diagram;
[0034] Figure 9 yes Figure 8 Enlarged illustration with annotations. Detailed Implementation
[0035] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0037] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0038] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.
[0039] Example 1:
[0040] like Figure 3As shown in this embodiment, the intelligent X-ray imaging device for post-vertebral fixation surgery includes a bed 100 for the patient to lie on. The bed 100 is horizontally arranged to allow the patient to lie stably and facilitates anteroposterior imaging of the vertebrae. An X-ray receiver 101 is embedded in the bed 100 and is horizontally positioned within it. X-rays are directly received by the X-ray receiver 101 after penetrating the patient. In addition to the bed and the X-ray receiver, the device also includes a column 200 with a crossbar 300 mounted on it. An X-ray generator 400 is mounted on the crossbar 300 and can rotate around the axis of the crossbar 300. The X-ray generator 400 is located above the X-ray receiver 101. Figure 4 As shown.
[0041] This device takes photographs according to the following steps:
[0042] S1. First, if the spinal screw information is known, the patient's spinal screw feature data can be directly input. If the spinal screw information is not available beforehand, the spinal screw feature data can be obtained by taking an anteroposterior image of the patient's spinal screw. The spinal screw feature data is the distance h0 relative to the screw tip, such as... Figure 1 As shown.
[0043] S2. Then, have the patient lie on their side and take the first lateral image of the spinal screw. In this image, the X-ray generator 400 is perpendicular to the X-ray receiver 101 to obtain the projection distance h1 relative to the tip of the screw. Figure 2 As shown. If h1 = 0, meaning the tips of the relative bone screws completely overlap, then this is a standard lateral view of the spinal bone screws, and the following steps are unnecessary. If h1 ≠ 0, then continue with the following steps.
[0044] S3. After obtaining the data of h0 and h1 through image processing, the deviation angle is calculated. like Figure 9 As shown.
[0045] S4. Based on the deviation angle, the rotating X-ray generator 400 is corrected, such as... Figure 7 As shown.
[0046] S5. A second imaging session was taken to obtain a lateral view of the spinal screws, such as... Figure 7 As shown.
[0047] S6. Because the X-ray receiving device 101 is horizontally positioned on the bed 100, and the X-ray generating device 400 rotated α degrees during the second imaging, the projection of the spinal screw is oblique, meaning the obtained image is elongated in the lateral direction. Therefore, we need to correct the second lateral image of the spinal screw according to the aforementioned deviation angle to obtain a standard lateral image of the spinal screw. Figure 6 , Figure 7 and Figure 8 As shown, the lateral length of the second lateral view of the spinal screw is L1, while the actual lateral length of the spinal screw lateral view should be L0. Therefore, the second lateral view of the spinal screw is compressed laterally by a compression ratio of [value missing]. Although X-rays are point-source radiation and the emitted rays are not parallel, the spinal screws are small in size and the distance between the light source and the object being photographed is relatively large. Therefore, the divergence angle of the light is extremely small, and it can be directly treated as parallel light, thus simplifying the correction process.
[0048] Example 2:
[0049] In step S4 of Example 1, the emission port was originally aligned with the spinal screw and the X-ray receiving device 101. However, due to the rotation of the X-ray generating device 400, the X-ray generating device 400 is no longer aligned with the spinal screw. Example 1 requires the patient to move laterally to the right to allow the spinal screw to fall into the irradiation area. This method may cause the angle of the spinal screw to change again, resulting in an inaccurate image in the second imaging and reducing imaging efficiency. Therefore, a further improvement was made based on Example 1, by mounting the bed 100 or the column 200 on a laterally arranged guide rail 500, such as... Figure 3 and Figure 5 As shown, as long as the bed 100 and the column 200 can move laterally relative to each other, the spinal screw can fall back into the irradiation area while the patient remains stationary, thus ensuring that the angle of the spinal screw does not change. The bed 100 or column 200 on the guide rail 500 can be moved manually by medical staff, or intelligently moved through automated control; these are existing mature technologies and will not be elaborated here. Other imaging steps are the same as in Example 1 and will not be repeated here.
[0050] Example 3:
[0051] In Example 2, because the bed 100 and the column 200 undergo lateral relative movement, the distance between the X-ray generator 400 and the spinal screw changes. Since X-rays are essentially point sources with a divergence angle, the change in the distance between the X-ray generator 400 and the spinal screw will alter the angle of incidence. To eliminate the influence of this variable, Example 3 further improves upon Example 2. The column 200 has a longitudinally arranged sliding groove 201, and the crossbar 300 cooperates with the sliding groove 201 to move longitudinally along the groove 201; or the bed 100 can be raised and lowered, such as... Figure 3 and Figure 5 As shown. Figure 3 and Figure 5 This application simply demonstrates two combinations of two implementation methods for each of the two improvements. In reality, four combinations can be made. Although not all the drawings are provided in this application, those skilled in the art can freely combine and implement them, all of which are within the scope of protection of this patent.
[0052] In step S4 of Example 2, after the bed 100 and the column 200 can move laterally relative to each other, the distance between the X-ray generator 400 and the spinal screw increases. This requires the crossbar 300 to lower the X-ray generator 400, or the bed 100 to raise the patient, or both actions to occur simultaneously at a faster speed. This ensures that the distance between the X-ray generator 400 and the spinal screw is the same as the distance taken during the first imaging in step S2. Other imaging steps are the same as in Example 2 and will not be repeated here.
[0053] Example 4:
[0054] In all the above embodiments, there is still a problem: the X-ray generating device 400 cannot move back and forth, meaning that the patient lying on the bed 100 needs to move left and right on the bed. Figure 3 (Example: moving back and forth) to ensure the patient's examination area falls within the irradiation area of the X-ray generator 400. Furthermore, when a patient finishes taking an anteroposterior view and then moves to a lateral view, in addition to turning, they need to move their body backward to bring the examined area back into the imaging area. Therefore, embodiments 1-3 can be further improved by making the crossbar 300 perpendicular to the guide rail 500, allowing the X-ray generator 400 to move axially along the crossbar 300.
[0055] In step S2, after the patient lies on their side, the X-ray generator 400 can move axially along the crossbar 300 and be positioned directly above the patient's examination site. Even if the patient is not lying in the center of the bed, normal imaging can still be performed, further improving imaging efficiency.
[0056] This invention is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this invention. However, regardless of any changes made in their shape or structure, any technical solution that falls within the scope of the claims of this invention shall be protected by this invention.
Claims
1. A smart X-ray imaging method after vertebral fixation surgery, characterized by: The imaging device includes a bed (100) for a patient to lie on, wherein an X-ray receiver (101) is embedded in the bed (100); it also includes a column (200) on which a crossbar (300) is mounted, wherein an X-ray generator (400) is mounted on the crossbar (300), the X-ray generator (400) being rotatable about the axis of the crossbar (300), and the X-ray generator (400) being located above the X-ray receiver (101); Taking photographs using the aforementioned photographic apparatus includes the following steps: Obtain or input patient spinal screw feature data; The first lateral view of the spinal screws was taken; The deviation angle is obtained through image processing. The characteristic data of the spinal screw is the distance h0 between the screw tips; the first lateral image of the spinal screw is taken to obtain the projected distance h1 between the screw tips; the deviation angle α = arcsin( ); Corrections are made based on the deviation angle of the rotating X-ray generator (400); The second imaging session yielded a lateral view of the spinal screws. The second lateral view image of the spinal screw was corrected according to the aforementioned deviation angle to obtain a standard lateral view image of the spinal screw. The horizontal length of the second lateral view image of the spinal screw is L1. The second lateral view image of the spinal screw was then compressed horizontally by a compression ratio of [value missing]. .
2. The intelligent X-ray imaging method after vertebral fixation surgery according to claim 1, characterized in that: The bed (100) or column (200) is mounted on a horizontally arranged guide rail (500).
3. The intelligent X-ray imaging method after vertebral fixation surgery according to claim 2, characterized in that: The column (200) is provided with a longitudinally arranged slide groove (201), and the crossbar (300) cooperates with the slide groove (201) to move longitudinally along the slide groove (201); or the bed body (100) can be raised and lowered.
4. The intelligent X-ray imaging method after vertebral fixation surgery according to claim 3, characterized in that: The crossbar (300) is perpendicular to the guide rail (500), and the X-ray generating device (400) can move axially along the crossbar (300).
5. The intelligent X-ray imaging method for vertebral fixation surgery according to any one of claims 1-4, characterized in that: The X-ray receiving device (101) is laid horizontally inside the bed (100).
6. The photographic method according to claim 1, characterized in that: Spinal screw feature data are obtained by taking an anteroposterior image of the patient's spinal screw.