Model body for radiotherapy image guidance and treatment bed laser tracking and positioning

Abstract

The utility model discloses a laser tracking and positioning die body for radiotherapy image guidance and a treatment bed, which comprises a body, a target seat is movably connected above the body, the target seat is used for placing a target ball, and the target ball is matched with a laser tracker and is used for positioning a coordinate system of the treatment bed; scale marks are arranged on the side face and the top face of the body. The scale line is matched with the laser lamp and is used for positioning the central point of the treatment bed; a positioning rod is arranged in the body, the positioning rod is used for placing a tungsten steel ball, and the tungsten steel ball is located in the center of the body. According to the utility model, the scale marks are arranged and are aligned with the marking lines of the laser lamp, so that the positioning of image guidance is effectively improved; through the positioning of the target ball and the laser tracker, the positioning accuracy and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and particularly relates to a radiotherapy image-guided and treatment couch laser tracking positioning phantom. Background Art

[0002] A positioning phantom is a device made of materials with different densities and structures to simulate various tissues in the human body. It is widely used for imaging quality assessment, positioning, and verifying the positioning accuracy of image-guided systems and treatment couches. It can help identify and solve potential problems, and further improve the effectiveness and safety of radiotherapy.

[0003] The radiotherapy image-guided and treatment couch laser tracking positioning phantom is mainly used for positioning the center and coordinate system of the treatment couch during installation and commissioning. By cooperating with an X-ray tube and a flat panel detector to take images for positioning, the image of a tungsten steel ball is shown on the taken image, and the positioning center position can be revealed by comparing with the phantom body. Currently, it is mainly by projecting a laser light onto a calibration rod as a reference, then taking an image, and then performing calibration positioning according to the taken image; when positioning the treatment couch, it is necessary to paste the target seat on the couch board with hot melt adhesive and then perform laser tracking positioning, which cannot accurately paste and position, and is not convenient enough. Summary of the Utility Model

[0004] To solve the above problems, the utility model provides a radiotherapy image-guided and treatment couch laser tracking positioning phantom, which can quickly position the center and coordinate system of the treatment couch during installation and commissioning.

[0005] To achieve the above object, the technical solution adopted by the utility model is: a radiotherapy image-guided and treatment couch laser tracking positioning phantom, including a body, a target seat is movably connected above the body, the target seat is used to place a target ball, the target ball cooperates with a laser tracker to position the coordinate system of the treatment couch; scale lines are arranged on the side and top surfaces of the body; the scale lines cooperate with a laser light to position the center point of the treatment couch; a positioning rod is arranged inside the body, the positioning rod is used to place a tungsten steel ball, and the tungsten steel ball is located at the center of the body.

[0006] As a preferred technical solution of the utility model: the accuracy of the scale line is 1 mm.

[0007] As a preferred technical solution of the utility model: bolt holes are arranged on the target seat, and the bolt holes are used to install set screws.

[0008] As a preferred technical solution of the utility model: the body, the positioning rod, the target seat, the locking screw, and the set screw are made of transparent materials.

[0009] As a preferred technical solution of the present utility model: the transparent material is polystyrene.

[0010] The present utility model has the following beneficial effects:

[0011] 1. Through the setting of the scale lines, by aligning with the marking line of the laser lamp, the positioning of image guidance is effectively improved; through the positioning of the target ball and the laser tracker, the accuracy and efficiency of positioning are improved.

[0012] 2. Each component has no electrical components, thus reducing the failure rate. It also has the advantages of convenient installation and storage, and is convenient for going out, carrying and using. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 is Figure 1 the exploded structure diagram of;

[0015] Figure 3 is a schematic diagram of the structure of the present utility model during use;

[0016] Figures 1 - 3 In, 1. Main body, 2. Scale line, 3. Target seat; 4. Installation groove; 5. Target ball; 6. Positioning rod; 7. Tungsten steel ball; 8. Bolt hole; 9. Set screw; 10. Locking screw; 11. Treatment bed; 12. Laser lamp; 13. Laser tracker; 14. Radiotherapy equipment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the purpose and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0018] Such as Figures 1 - 3As shown in the figure, the embodiment of the present utility model provides a radiotherapy image-guided and treatment couch laser tracking positioning phantom, which includes a main body 1. Scale lines 2 are provided on the top surface and side surface of the main body 1. The scale lines 2 are distributed along the radial and axial directions of the surface center. Preferably, the scale lines 2 are etched on the top surface and side surface of the main body 1. The etching method makes the scale lines 2 not easily worn and has high precision. The precision of the scale lines 2 is preferably 1 mm. The scale lines 2 cooperate with the laser lamps 12 to locate the center point of the radiotherapy device 14. That is, the centers of the radiotherapy device 14 are located by two laser lamps 12. Aligning the scale lines 2 with the marking lines of the laser lamps 12 can quickly place the main body 1 at the center point of the radiotherapy device 14. The shape of the main body 1 is preferably a cuboid structure. The cuboid structure is convenient for placing on the treatment couch 11 and is also convenient for accurately setting the scale lines 2. To further improve the positioning accuracy, a target seat 3 is movably connected above the main body 1. That is, an installation groove 4 connected to the top surface is provided inside the upper part of the main body 1, and the target seat 3 is movably connected to the installation groove 4. The movable connection can adopt plugging, clamping, threaded connection and other methods. In this embodiment, the plugging method is preferably adopted. The target seat 3 is used to place the target ball 5. The target ball 5 cooperates with the laser tracker 13 to locate the coordinate system of the treatment couch 11. A positioning rod 6 is arranged inside the main body 1. The top of the positioning rod 6 is used to place a tungsten steel ball 7. The tungsten steel ball 7 is located at the center of the main body 1. Using the tungsten steel ball 7 can obtain clear imaging. By aligning the marking lines of the laser lamps 12 with the scale lines 2, the positioning of image guidance is effectively improved; by positioning the target ball 5 and the laser tracker 13, the positioning accuracy and efficiency are improved.

[0019] Bolt holes 8 are provided on the target seat 3. The bolt holes 8 are used to install set screws 9. The target ball 5 can be fixed on the target seat 3 by the set screws 9, and at the same time, the disassembly and installation of the target ball 5 are convenient. The positioning rod 6 is internally threaded with a locking screw 10. The locking screw 10 tightens the top end of the positioning rod 6, improving the positioning accuracy of the tungsten steel ball 7. In this embodiment, the diameter of the tungsten steel ball 7 is preferably 3 mm. To facilitate imaging, the main body 1, the target seat 3, the installation groove 9, the locking screw 10, the set screw 9, and the positioning rod 6 are made of transparent materials. The transparent material is preferably polystyrene. In this embodiment, each component does not have electrical components, thus reducing the failure rate. It also has the advantages of convenient installation and storage, and is convenient for going out, carrying and using.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A phantom for radiotherapy image guidance and laser tracking and positioning of a treatment bed, characterized in that: The invention comprises a main body (1), wherein a target seat (3) is movably connected to the top of the main body (1), wherein the target seat (3) is used to place a target ball (5), wherein the target ball (5) cooperates with a laser tracker (13) and is used to locate the coordinate system of a treatment bed (11); scale lines (2) are arranged on the side and top surfaces of the main body (1); the scale lines (2) cooperate with a laser lamp (12) and are used to locate the center point of the treatment bed (11); a positioning rod (6) is arranged inside the main body (1), wherein the positioning rod (6) is used to place a tungsten steel ball (7), wherein the tungsten steel ball (7) is located at the center of the main body (1).

2. The phantom for radiotherapy image guidance and treatment bed laser tracking positioning according to claim 1, characterized in that: The accuracy of the scale line (2) is 1 mm.

3. The phantom for radiotherapy image guidance and treatment bed laser tracking positioning according to claim 1, characterized in that: The target seat is provided with a bolt hole (8), and the bolt hole (8) is used to install a set screw (9).

4. The phantom for radiotherapy image guidance and treatment bed laser tracking positioning according to claim 3, characterized in that: The body (1), the positioning rod (6), the target seat (3), the locking screw (10) and the set screw (9) are made of transparent materials.

5. The phantom for radiotherapy image guidance and treatment bed laser tracking positioning according to claim 4, characterized in that: The transparent material is polystyrene.

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