Alignment method for a helical tomotherapy system

Abstract

This application discloses an alignment method for a helical tomotherapy system, belonging to the technical field of helical tomotherapy systems. The alignment method includes: performing alignment and leveling operations on the gantry; performing alignment and leveling operations on a first laser lamp located at the top of the gantry based on the leveled gantry; performing alignment and leveling operations on a second laser lamp located on the side of the gantry based on the leveled gantry and the first laser lamp; and performing alignment and leveling operations on the treatment bed based on the leveled first laser lamp. This makes the alignment and leveling operation of the helical tomotherapy system simple, convenient, and efficient, with low dependence on personnel experience and high alignment accuracy, which helps reduce the difficulty of subsequent testing and improve testing efficiency.

Description

Technical Field

[0001] This application relates to the field of helical tomotherapy systems, and in particular to an alignment method for a helical tomotherapy system. Background Technology

[0002] After the helical tomotherapy system is assembled, its overall performance should be tested. In the early stages of testing, the relative positions of the gantry, laser lamp, and treatment bed need to be adjusted and aligned based on an absolute coordinate system and a virtual isocenter position to prepare for subsequent testing. If the relative positions of the three components are not properly adjusted, it will increase the difficulty of later testing and reduce testing efficiency. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the related art.

[0004] Therefore, embodiments of this application provide an alignment method for a helical tomotherapy system.

[0005] An embodiment of this application provides a method for aligning a helical tomotherapy system, comprising:

[0006] Perform alignment and leveling operations on the frame;

[0007] Based on the leveled rack, the first laser light located at the top of the rack is aligned and leveled.

[0008] Based on the leveled frame and the first laser light, the second laser light located on the side of the frame is aligned and leveled.

[0009] Based on the first laser light after leveling, the treatment bed is aligned and leveled.

[0010] For example, a support is provided at the bottom of the frame, and a first adjustment plane, a second adjustment plane, and a processing surface are provided on the frame. The second adjustment plane is located on both sides of the first adjustment plane and is perpendicular to the first adjustment plane. The steps for aligning and leveling the frame include:

[0011] Align the support structure with the landmarks in the space where the helical tomotherapy system is located;

[0012] The first adjustment plane, the second adjustment plane, and the processing surface are leveled using instruments.

[0013] For example, the frame includes a frame body and a support frame connected to the bottom of the frame body. The support frame is provided with a caster assembly, and the support part is a fixing plate for the caster assembly.

[0014] The first adjustment plane is located at the top of the main frame, and the second adjustment plane is located at the top of the support frame and distributed on both sides of the first adjustment plane along the X direction. The machined surface of the frame is located on the side of the main frame facing the treatment bed.

[0015] For example, the frame is provided with virtual isocentric positioning lines and Y-machining lines. Based on the leveled frame, the step of aligning and leveling the first laser lamp located at the top of the frame includes:

[0016] The instrument was used to align the first laser lamp in the Z direction.

[0017] Align the first X-direction alignment line emitted by the first laser light with the virtual isocenter positioning line;

[0018] Align the Y-direction alignment line emitted by the first laser with the Y-processing engraving line.

[0019] For example, a Y-shaped machining line is provided on the side of the frame near the first laser lamp, and a laser alignment arm is connected to the side of the frame near the first laser lamp. A virtual isocentric positioning line is provided on the laser alignment arm.

[0020] For example, an adjustable alignment device is installed on the frame, and the adjustable alignment device is provided with a first alignment line and a second alignment line spaced apart along the Y direction. The frame is provided with an X processing line. Based on the leveled frame and the first laser lamp, the step of performing an alignment and leveling operation on the second laser lamp located on the side of the frame includes:

[0021] Align the alignment line in the Z direction emitted by the second laser with the alignment line in the Y direction emitted by the first laser.

[0022] Align the second X-direction alignment line emitted by the second laser light with the first alignment line, the second alignment line, and the X-processing line.

[0023] For example, before the step of aligning the second X-direction alignment line emitted by the second laser lamp with the first alignment line, the second alignment line, and the X-processing line, the method further includes:

[0024] The plane containing the first and second alignment lines is leveled, and the first and second alignment lines are set on the same plane.

[0025] For example, the adjustable alignment device includes a support frame, an adjustable bracket, an adjusting member, and a locking member. The support frame is connected to the frame. A first alignment mark and a second alignment mark are disposed on a plane of the adjusting bracket away from the support frame. The adjusting member is connected to the adjustable bracket and the support frame and is capable of adjusting the distance between the adjustable bracket and the support frame. The locking member is connected to the adjusting member to lock the support frame and the adjustable bracket.

[0026] Among them, at least two sets of adjusting components are arranged at intervals along the Y direction.

[0027] For example, the adjustable alignment device is detachably connected to the frame via a first connecting bracket.

[0028] For example, a Y-alignment line is provided on the treatment bed. The steps of aligning and leveling the treatment bed based on the leveled first laser light include:

[0029] Align the Y-aligned marking line with the Y-direction alignment line emitted by the first laser light;

[0030] Move the head end of the treatment bed between the first laser lamp and the gantry;

[0031] Level the surface of the treatment bed.

[0032] The alignment method for a helical tomotherapy system provided in this application involves aligning and leveling the gantry to ensure it is positioned appropriately within the space containing the system. This leveling provides a solid foundation for subsequent alignment and leveling operations of the first laser lamp, second laser lamp, and treatment bed. The alignment and leveling are performed on the first laser lamp located at the top of the gantry, the second laser lamp located on the side of the gantry, and the treatment bed, based on the leveled gantry and the first laser lamp. This ensures that the leveling operations of the gantry, first laser lamp, second laser lamp, and treatment bed are performed within the same coordinate system. This makes the alignment and leveling of the helical tomotherapy system simple, convenient, and efficient, with low dependence on personnel experience, high versatility, and high alignment accuracy. It also helps reduce the difficulty of subsequent testing and improves testing efficiency.

[0033] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0034] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein:

[0035] Figure 1 A schematic outflow diagram of an alignment method for a helical tomotherapy system provided in an embodiment of this application is shown;

[0036] Figure 2 A schematic structural diagram of a helical tomotherapy system provided in an embodiment of this application is shown from one perspective;

[0037] Figure 3 A schematic structural diagram of the helical tomotherapy system provided in an embodiment of this application is shown from another perspective;

[0038] Figure 4 A schematic structural diagram of the helical tomotherapy system provided in an embodiment of this application is shown from another perspective;

[0039] Figure 5 A partial structural schematic diagram of the helical tomotherapy system provided in an embodiment of this application is shown.

[0040] in, Figures 2 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0041] 100 Frame, 101 First Adjustment Plane, 102 Second Adjustment Plane, 103 Machining Surface, 104 Virtual Isocentric Positioning Marking, 105 Y Machining Marking, 106 X Machining Marking, 110 Support Part, 120 Frame Body, 130 Support Frame, 140 Laser Alignment Arm, 200 First Laser Lamp, 201 First X-Direction Alignment Line, 202 Y-Direction Alignment Line, 300 Second Laser Lamp, 301 Z-Direction Alignment Line, 302 Second X-Direction Alignment Line, 400 Treatment Bed, 401 Y-Alignment Marking, 500 Adjustable Alignment Device, 501 First Alignment Marking, 502 Second Alignment Marking, 510 Bearing Frame, 520 Adjustable Support, 530 Adjusting Component, 541 Screw, 542 Locking Nut, 600 First Connecting Frame, 700 Second Connecting Frame, 710 First Frame Body, 720 Second Frame Body. Detailed Implementation

[0042] The accompanying drawings and specific embodiments provide a further detailed description of this application. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0044] Examples of embodiments of this application, such as Figure 1 As shown, an alignment method for a helical tomotherapy system is provided. Wherein, as... Figure 2As shown, the helical tomotherapy system includes a gantry 100, a first laser lamp 200, a second laser lamp 300, and a treatment bed 400. The first laser lamp is located at the top of the gantry 100, while the second laser lamp 300 and the treatment bed 400 are located on opposite sides of the gantry 100. Specifically, the first laser lamp 200 can be a cooled laser lamp. Specifically, in the X-direction... Figure 2 As shown by the arrow X in the diagram, the Y direction is as follows: Figure 2 As shown by the arrow Y in the diagram, the Z direction is as follows: Figure 2 As indicated by arrow Z in the diagram.

[0045] Among them, such as Figure 1 As shown, the alignment method for the helical tomotherapy system includes:

[0046] Step S010: Perform alignment and leveling operations on the frame;

[0047] Step S020: Based on the leveled rack, perform alignment and leveling operations on the first laser light located at the top of the rack;

[0048] Step S030: Based on the leveled rack and the first laser light, perform alignment and leveling operations on the second laser light located on the side of the rack;

[0049] Step S040: Based on the leveled first laser light, perform alignment and leveling operations on the treatment bed.

[0050] The alignment method for the helical tomotherapy system provided in this application involves aligning and leveling the gantry 100 to ensure it is positioned appropriately within the space containing the helical tomotherapy system. This leveling process provides a solid foundation for subsequent alignment and leveling operations of the first laser lamp 200, the second laser lamp 300, and the treatment bed 400. The alignment and leveling operation is performed on the first laser lamp 200 located at the top of the gantry 100, based on the leveled gantry 100 and the first laser lamp 200; the alignment and leveling operation is performed on the second laser lamp 300 located on the side of the gantry 100, based on the leveled gantry 100 and the first laser lamp 200; and the alignment and leveling operation is performed on the treatment bed 400, based on the leveled first laser lamp 200. This allows the leveling operations of the gantry 100, the first laser lamp 200, the second laser lamp 300, and the treatment bed 400 to be located within the same coordinate system. This makes the alignment and leveling operation of the helical tomotherapy system simple, convenient, and efficient, with less reliance on personnel experience, strong versatility, and high alignment accuracy. It also helps to reduce the difficulty of subsequent testing and improve testing efficiency.

[0051] like Figure 2 and Figure 3As shown, in some possible embodiments provided in this application, a support portion 110 is provided at the bottom of the frame 100, and a first adjustment plane 101, a second adjustment plane 102, and a processing surface 103 are provided on the frame 100. The second adjustment plane 102 is located on both sides of the first adjustment plane 101 and is perpendicular to the first adjustment plane 101. The step of aligning and leveling the frame 100 includes:

[0052] Align the support unit 110 with the landmark of the space where the helical tomotherapy system is located;

[0053] The first adjustment plane 101, the second adjustment plane 102, and the machining surface 103 are leveled using instruments.

[0054] This embodiment provides a specific scheme for aligning and leveling the gantry 100. Typically, the helical tomotherapy system is aligned and leveled in a testing room, which is the space where the helical tomotherapy system is located. The testing room has pre-set landmarks. By aligning the support portion 110 of the gantry 100 with the landmarks in the testing room, the gantry 100 is initially positioned and fixed in a suitable location within the testing room. Then, instruments are used to level the first adjustment plane 101, the second adjustment plane 102, and the machining surface 103 of the gantry 100 to complete the alignment and leveling operation of the gantry 100.

[0055] Specifically, the instrument can be a spirit level. The spirit level can be used to level the first adjustment plane 101 of the frame 100 and the second adjustment planes 102 located on both sides of the first adjustment plane 101, and the spirit level can also be used to rotate the processing surface 103 to a horizontal position for leveling. It is understood that other instruments can also be used to level the first adjustment plane 101 and the second adjustment planes 102 located on both sides of the first adjustment plane 101.

[0056] like Figure 2 and Figure 3 As shown, in some possible embodiments provided in this application, the frame 100 includes a frame body 120 and a support frame 130 connected below the frame body 120. The support frame 130 is provided with a caster assembly, and the support part 110 is a fixing plate for the caster assembly. The first adjustment plane 101 is located at the top of the frame body 120, and the second adjustment plane 102 is located at the top of the support frame 130 and is located on both sides of the first adjustment plane 101 along the X direction. The machined surface 103 of the frame 100 is located on the side of the frame body 120 facing the treatment bed 400.

[0057] In this embodiment, the frame 100 includes a frame body 120 and a support frame 130. The support frame 130 improves the reliability and stability of the entire frame 100. A caster assembly is provided on the support frame 130, facilitating the quick and convenient movement of the frame 100 to a suitable location, simplifying manual handling and saving labor. The support portion 110 serves as the fixing plate for the caster assembly. Therefore, after the frame 100 is moved to a suitable position via the caster assembly, placing the fixing plate of the caster assembly at the landmark in the testing room completes the initial positioning of the frame 100. This operation is simple, convenient, and efficient, with low reliance on personnel experience and high alignment accuracy.

[0058] Among them, such as Figure 3 As shown, the first adjustment plane 101 is located on the top of the frame body 120, the second adjustment plane 102 is located on the top of the support frame 130 and is located on both sides of the first adjustment plane 101 along the X direction, and the machining surface 103 of the frame 100 is located on the side of the frame body 120 facing the treatment bed 400.

[0059] like Figure 2 and Figure 3 As shown, in some possible embodiments provided in this application, the frame 100 is provided with virtual isocentric positioning lines 104 and Y-machining lines 105. Based on the leveled frame 100, the step of aligning and leveling the first laser lamp 200 located on top of the frame 100 includes:

[0060] The instrument was used to align the first laser lamp 200 in the Z direction.

[0061] Align the first X-direction alignment line 201 emitted by the first laser lamp 200 with the virtual isocenter positioning line 104;

[0062] Align the Y-direction alignment line 202 emitted by the first laser lamp 200 with the Y-processing engraving line 105.

[0063] This embodiment provides a specific scheme for aligning and leveling the first laser lamp 200. First, the first laser lamp 200 is aligned in the Z direction using an instrument to ensure its absolute perpendicularity. Then, the first X-direction alignment line 201 emitted by the first laser lamp 200 is aligned with the virtual isocentric positioning line 104 to achieve Y-direction alignment. The Y-direction alignment line 202 emitted by the first laser lamp 200 is aligned with the Y-processing line 105 to achieve X-direction alignment. Thus, the entire alignment and leveling operation of the first laser lamp 200 is completed.

[0064] Specifically, an automatic leveling laser can be used to align the first laser lamp 200 in the Z direction. It is understood that other instruments capable of emitting vertical rays can also be used to align the first laser lamp 200 in the Z direction. Furthermore, the first laser lamp 200 can be flipped to achieve Z-direction alignment.

[0065] Specifically, after the first laser lamp 200 completes the Z-direction alignment operation, it can be operated to perform a combination of rotation and movement to make the first X-direction alignment line 201 emitted by the first laser lamp 200 coincide with the virtual isocentric positioning line 104, thereby realizing the Y-direction alignment operation of the first laser lamp 200.

[0066] After the first laser lamp 200 completes the alignment operation in the Y direction, it can be moved so that the alignment line 202 emitted by the first laser lamp 200 in the Y direction coincides with the Y processing line 105, thereby realizing the alignment operation of the first laser lamp 200 in the X direction.

[0067] like Figure 2 As shown, in some possible embodiments provided in this application, a Y-processing engraving line 105 is provided on the side of the frame 100 near the first laser lamp 200, and a laser alignment arm 140 is connected to the side of the frame 100 near the first laser lamp 200. A virtual isocentric positioning engraving line 104 is provided on the laser alignment arm 140. The laser alignment arm 140 is provided so that the virtual isocentric positioning engraving line 104 can be located in a suitable position so that the first X-direction alignment line 201 emitted by the first laser lamp 200 can conveniently and quickly coincide with the virtual isocentric positioning engraving line 104 on the laser alignment arm 140, and can ensure good alignment accuracy.

[0068] Specifically, such as Figure 5 As shown, the laser alignment arm 140 can be connected to the frame 100 via the second connecting frame 700. Specifically, the second connecting frame 700 includes a first frame 710 and a second frame 720. The first frame 710 connects the second frame 720 and the laser alignment arm 140, and the second frame 720 connects to the frame 100.

[0069] Specifically, the gantry 100 can be detachably connected to the laser alignment arm 140 via the second connecting bracket 700. This allows the laser alignment arm 140 to be mounted on the gantry 100 via the second connecting bracket 700 when alignment of the helical tomotherapy system is required. The virtual isocenter positioning lines 104 on the laser alignment arm 140 are then used to align with the first X-direction alignment line 201 of the first laser lamp 200. When alignment of the helical tomotherapy system is not required, the laser alignment arm 140 can be detached from the gantry 100 via the second connecting bracket 700 for easy installation in other testing facilities. This configuration allows the laser alignment arm 140 to be used for positioning operations of different helical tomotherapy systems, demonstrating strong versatility.

[0070] like Figure 2 , Figure 4 and Figure 5 As shown, in some possible embodiments provided in this application, an adjustable alignment device 500 is installed on the frame 100, and a first alignment line 501 and a second alignment line 502 are spaced apart along the Y direction on the adjustable alignment device 500. An X processing line 106 is provided on the frame 100. The step of performing an alignment and leveling operation on the second laser lamp 300 located on the side based on the leveled frame 100 and the first laser lamp 200 includes:

[0071] Align the alignment line 301 in the Z direction emitted by the second laser 300 with the alignment line 202 in the Y direction emitted by the first laser 200.

[0072] The second X-direction alignment line 302 emitted by the second laser lamp 300 is aligned with the first alignment line 501, the second alignment line 502, and the X-processing line 106.

[0073] The embodiments of this application provide a specific scheme for aligning and leveling a second laser lamp 300. First, the Z-direction alignment line 301 emitted by the second laser lamp 300 is aligned with the Y-direction alignment line 202 emitted by the first laser lamp 200 to achieve X-direction alignment of the second laser lamp 300. Then, the second X-direction alignment line 302 emitted by the second laser lamp 300 is aligned with the first alignment mark 501, the second alignment mark 502, and the X-processing mark 106 on the adjustable alignment device 500 mounted on the frame 100 to achieve Z-direction alignment of the second laser lamp 300. Thus, the entire alignment and leveling operation of the second laser lamp 300 is completed.

[0074] Specifically, the second laser lamp 300 can be operated to perform a combination of flipping, rotating, and moving actions so that the Z-direction alignment line 301 emitted by the second laser lamp 300 coincides with the Y-direction alignment line 202 emitted by the first laser lamp 200, thereby achieving the alignment operation of the second laser lamp 300 in the X direction.

[0075] After the second laser lamp 300 completes the X-direction alignment operation, it can be operated to perform a combination of flipping and moving actions so that the second X-direction alignment line 302 emitted by the second laser lamp 300 coincides with the first alignment line 501, the second alignment line 502, and the X-processing line 106, thereby realizing the Z-direction alignment operation of the second laser lamp 300.

[0076] In some possible embodiments provided in this application, before the step of aligning the second X-direction alignment line 302 emitted by the second laser lamp 300 with the first alignment line 501, the second alignment line 502, and the X-processing line 106, the method further includes:

[0077] The plane containing the first alignment etched line 501 and the second alignment etched line 502 is leveled, and the first alignment etched line 501 and the second alignment etched line 502 are set on the same plane.

[0078] In this embodiment, since the first alignment line 501 and the second alignment line 502 are disposed on the same plane of the adjustable alignment device 500, before performing the step of aligning the second X-direction alignment line 302 emitted by the second laser lamp 300 with the first alignment line 501, the second alignment line 502, and the X-processing line 106, the plane containing the first alignment line 501 and the second alignment line 502 is first leveled to improve the alignment accuracy of the second laser lamp 300 in the X direction.

[0079] like Figure 5 As shown, in some possible embodiments provided in this application, the adjustable alignment device 500 includes a support frame 510, an adjustable bracket 520, an adjusting member 530, and a locking member. The support frame 510 is connected to the frame 100. The first alignment mark 501 and the second alignment mark 502 are disposed on the plane of the adjustable bracket 520 away from the support frame 510. The adjusting member 530 is connected to the adjustable bracket and the support frame 510 and can adjust the distance between the adjustable bracket 520 and the support frame 510. The locking member is connected to the adjusting member 530 to lock the support frame 510 and the adjustable bracket 520. At least two sets of adjusting members 530 are arranged at intervals along the Y direction.

[0080] This embodiment provides a specific structure of an adjustable alignment device 500. The adjustable alignment device 500 is connected to the frame 100 via a support frame 510, allowing the entire adjustable alignment device 500 to be installed at a suitable position on the frame 100. A first alignment mark 501 and a second alignment mark 502 are disposed on a plane of the adjustable bracket 520 away from the support frame 510. An adjusting member 530 is used to adjust the distance between the adjustable bracket 520 and the support frame 510. Specifically, at least two sets of adjusting members 530 are spaced apart along the Y direction, allowing the distance between the adjustable bracket 520 and the support frame 510 at the location of each adjusting member 530 to be adjusted, thereby enabling the adjustment of the spacing and rotation angle between the adjustable bracket 520 and the support frame 510. Once it is determined that the plane on the adjustable bracket 520 with the first alignment mark 501 and the second alignment mark 502 is in a horizontal state, the carrier frame 510 and the adjustable bracket 520 are locked by connecting the locking member and the adjusting member 530, thereby realizing the leveling operation of the adjustable alignment device 500.

[0081] like Figure 5 As shown, specifically, the distance and rotation angle between the adjustable bracket 520 and the support frame 510 can be adjusted by at least two sets of adjusting members 530 spaced apart along the Y direction. A spirit level is used to confirm whether the plane containing the first alignment mark 501 and the second alignment mark 502 is horizontal. If it is horizontal, the locking member is connected to the adjusting member 530 to lock the support frame 510 and the adjustable bracket 520. If it is not horizontal, the distance and rotation angle between the adjustable bracket 520 and the support frame 510 need to be adjusted again using the adjusting member 530 until the plane containing the first alignment mark 501 and the second alignment mark 502 reaches a horizontal position. Finally, the locking member is connected to the adjusting member 530 to lock the support frame 510 and the adjustable bracket.

[0082] Specifically, the locking components may include a screw 541 and a locking nut 542. The screw 541 passes through the bottom of the support frame 510 and the adjustable bracket 520. The locking nut 542 is threadedly connected to the screw 541 from the top of the adjustable bracket, thereby locking the support frame 510 and the adjustable bracket.

[0083] Specifically, the adjusting element 530 may be an elastic element, a leveling nut, or other structure, which is not specifically limited in this application.

[0084] The adjusting members 530 can be in two, three, four, or other groups, and each group can contain two, three, four, or other adjusting members 530. Multiple adjusting members 530 in each group can be arranged along the X direction. It is understood that in some embodiments, each group may contain only one adjusting member 530.

[0085] Specifically, such as Figure 5 As shown, the adjusting member 530 includes two sets, each set including two adjusting members 530.

[0086] like Figure 5 As shown, in some possible embodiments provided in this application, the adjustable alignment device 500 is detachably connected to the frame 100 via the first connecting bracket 600.

[0087] In this embodiment, the adjustable alignment device 500 is detachably connected to the frame 100 via the first connecting bracket 600. This allows the adjustable alignment device 500 to be mounted on the frame 100 via the first connecting bracket 600 when alignment of the helical tomotherapy system is required, so as to align the second X-direction alignment line 302 of the second laser lamp 300. When alignment of the helical tomotherapy system is not required, the adjustable alignment device 500 can be detached from the frame 100 via the first connecting bracket 600 for easy installation in other testing facilities. It is understood that this configuration allows the adjustable alignment device 500 to be used for positioning operations of different helical tomotherapy systems, demonstrating strong versatility.

[0088] Furthermore, such as Figure 5 As shown, the adjustable alignment device 500 is detachably connected to the laser alignment arm 140 via a first connector.

[0089] like Figure 1 As shown, in some possible embodiments provided in this application, the treatment bed 400 is provided with a Y-alignment etched line 401. The step of aligning and leveling the treatment bed 400 based on the leveled first laser lamp 200 includes:

[0090] Align the Y-alignment line 401 with the Y-direction alignment line 202 emitted by the first laser lamp 200;

[0091] Move the head end of the treatment bed 400 between the first laser lamp 200 and the gantry 100;

[0092] Level the surface of the treatment bed 400.

[0093] This embodiment provides a specific scheme for aligning and leveling the treatment bed 400. First, the Y-alignment line 401 on the treatment bed 400 is aligned with the Y-direction alignment line 202 emitted by the first laser lamp 200 to achieve precise X-direction positioning of the treatment bed 400. Then, the head end of the treatment bed 400 is moved between the first laser lamp 200 and the frame 100, meaning the head end of the treatment bed 400 extends slightly beyond the first laser lamp 200 and is close to the frame 100 to achieve precise Y-direction positioning of the treatment bed 400. Finally, the surface of the treatment bed 400 is leveled to complete the alignment and leveling operation of the entire treatment bed 400.

[0094] Specifically, the level of the treatment bed 400 can be adjusted using instruments, such as a spirit level, to achieve the leveling operation of the treatment bed 400.

[0095] The alignment method for helical tomotherapy systems provided in this application fills the gap in efficient and complete alignment methods applicable to helical tomotherapy systems. It makes the alignment process simple, accurate and efficient, with little dependence on personnel experience. Furthermore, the adjustable alignment device 500 can be used with multiple systems, has strong versatility, and improves testing efficiency.

[0096] Through the above description of the embodiments, those skilled in the art can clearly understand that this disclosure can be implemented by means of software plus necessary general-purpose hardware platform, or it can be implemented by hardware.

[0097] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the units or processes shown in the drawings are not necessarily essential for implementing this disclosure. Those skilled in the art will understand that the units in the apparatus of the embodiment can be distributed within the apparatus of the embodiment as described, or can be located in one or more apparatuses different from this embodiment, with corresponding changes. The units of the above-described embodiment can be combined into one unit, or further divided into multiple sub-units.

[0098] The serial numbers in this disclosure are for descriptive purposes only and do not represent the superiority or inferiority of any particular implementation scenario. The above disclosures are merely a few specific implementation scenarios of this disclosure; however, this disclosure is not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of this disclosure.

Claims

1. A method for aligning a helical tomotherapy system, characterized in that, include: Perform alignment and leveling operations on the frame; Based on the leveled frame, the first laser light located on the top of the frame is aligned and leveled. Based on the leveled frame and the first laser light, the second laser light located on the side of the frame is aligned and leveled. Based on the leveled first laser light, the treatment bed is aligned and leveled. An adjustable alignment device is installed on the frame. The adjustable alignment device is provided with a first alignment line and a second alignment line at intervals along the Y direction. An X processing line is provided on the frame. The step of aligning and leveling the second laser light located on the side of the frame based on the leveled frame and the first laser light includes: Align the alignment line in the Z direction emitted by the second laser with the alignment line in the Y direction emitted by the first laser; Align the second X-direction alignment line emitted by the second laser lamp with the first alignment line, the second alignment line, and the X-processing line; Before the step of aligning the second X-direction alignment line emitted by the second laser lamp with the first alignment line, the second alignment line, and the X-processing line, the method further includes: The planes containing the first and second alignment lines are leveled, and the first and second alignment lines are set on the same plane.

2. The alignment method for the helical tomotherapy system according to claim 1, characterized in that, The bottom of the frame is provided with a support part, and the frame is provided with a first adjustment plane, a second adjustment plane, and a processing surface. The second adjustment plane is located on both sides of the first adjustment plane and is perpendicular to the first adjustment plane. The step of aligning and leveling the frame includes: Align the support portion with the landmark in the space where the helical tomotherapy system is located; The first adjustment plane, the second adjustment plane, and the processing surface are leveled using instruments.

3. The alignment method for the helical tomotherapy system according to claim 2, characterized in that, The frame includes a frame body and a support frame connected to the bottom of the frame body. The support frame is provided with a caster assembly, and the support part is a fixing plate of the caster assembly. The first adjustment plane is located at the top of the frame body, the second adjustment plane is located at the top of the support frame and is distributed on both sides of the first adjustment plane along the X direction, and the machined surface of the frame is located on the side of the frame body facing the treatment bed.

4. The alignment method for the helical tomotherapy system according to claim 1, characterized in that, The frame is provided with virtual isocentric positioning lines and Y-machining lines. The step of aligning and leveling the first laser lamp located on the top of the frame based on the leveled frame includes: The instrument is used to perform Z-direction alignment of the first laser light; Align the first X-direction alignment line emitted by the first laser light with the virtual isocentric positioning line; Align the alignment line in the Y direction emitted by the first laser with the Y machining line.

5. The alignment method for the helical tomotherapy system according to claim 4, characterized in that, The Y-shaped machining line is provided on the side of the frame near the first laser lamp, and a laser alignment arm is connected to the side of the frame near the first laser lamp. The virtual isocentric positioning line is provided on the laser alignment arm.

6. The alignment method for the helical tomotherapy system according to claim 1, characterized in that, The adjustable alignment device includes a support frame, an adjustable bracket, an adjusting member, and a locking member. The support frame is connected to the frame. The first alignment mark and the second alignment mark are disposed on a plane of the adjustable bracket away from the support frame. The adjusting member is connected to the adjustable bracket and the support frame and can adjust the distance between the adjustable bracket and the support frame. The locking member is connected to the adjusting member to lock the support frame and the adjustable bracket. At least two sets of the adjusting elements are arranged at intervals along the Y direction.

7. The alignment method for the helical tomotherapy system according to claim 6, characterized in that: The adjustable alignment device is detachably connected to the frame via a first connecting bracket.

8. The alignment method for the helical tomotherapy system according to claim 1, characterized in that, The treatment bed is provided with Y-alignment markings. The step of aligning and leveling the treatment bed based on the leveled first laser lamp includes: Align the Y-aligned marking line with the Y-direction alignment line emitted by the first laser light; Move the head end of the treatment bed between the first laser lamp and the frame; Level the surface of the treatment bed.

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