Vertical image guided radiotherapy device
With the vertical image-guided radiotherapy device, patients receive radiation while standing or sitting. Magnetic resonance imaging is used for target area monitoring and radiotherapy plan correction, which solves the problems of high room design difficulty and poor imaging quality of existing equipment, and realizes high-precision radiotherapy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 戴建荣
- Filing Date
- 2025-01-26
- Publication Date
- 2026-06-05
AI Technical Summary
Existing radiotherapy equipment suffers from problems such as high difficulty in designing the machine room, high equipment cost, and inability to monitor the target area status in real time. In particular, the induced current generated by the rotation of the magnetic resonance accelerator affects the imaging quality.
The upright image-guided radiotherapy device is used, in which the patient receives radiation in a standing or sitting position. The radiation generator is fixed relative to the imaging unit, and multi-angle irradiation is achieved by rotating the patient. Magnetic resonance imaging is used for target area monitoring and radiotherapy plan correction.
It achieves high-precision pre-treatment alignment and intra-treatment target area monitoring, reduces equipment manufacturing and machine room construction costs, and simplifies the overall structure.
Smart Images
Figure CN224320941U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of radiotherapy equipment technology, specifically to a vertical image-guided radiotherapy device that enables patients to rotate and be irradiated at multiple angles. Background Technology
[0002] Radiotherapy, as one of the important means of cancer treatment, occupies an important position in the field of cancer treatment. It is estimated that 60-70% of malignant tumor treatments require radiotherapy. Currently, over 90% of radiotherapy is based on C-arm radiotherapy machines, which use a C-shaped gantry to rotate the treatment head 360° around the supine patient to deliver the dose. The main beam area formed by the full rotation of the gantry is relatively large, requiring high protection of the machine room and increasing the difficulty of machine room design and construction. Furthermore, most existing radiotherapy machines only use X-ray imaging technology (such as cone-beam imaging, CBCT) to obtain pre-treatment positioning images. Positioning errors are obtained by registering these images with the positioning images. This not only increases the extra radiation dose received by the patient but also fails to monitor the target area status in real time during radiotherapy, such as changes in target area posture caused by respiratory movements, gastrointestinal motility, swallowing, and organ filling. Therefore, the actual radiation dose received by the target area and normal tissues deviates from the dose set in the treatment plan.
[0003] Magnetic resonance imaging (MRI), as a crucial tool for acquiring medical images, can effectively differentiate between various soft tissues and distinguish between inflammation, edema, and tumors. It also avoids ionizing damage and high-density artifacts, offering advantages over traditional X-ray imaging. This allows for precise target localization between and within fractions of radiotherapy sessions. Several MRI-guided accelerators have been successfully deployed clinically. Patients are positioned supine and inserted into the central aperture of the magnet. MRI captures patient positioning errors and anatomical changes, enabling high-precision irradiation through online alignment or modification of the radiotherapy plan. However, existing MRI accelerators have treatment heads mounted on a ring-shaped gantry in the center of the magnet. Due to the large radial and axial dimensions of the magnet, the overall radial and axial dimensions of the accelerator are significantly larger than those of conventional C-arm linear accelerators, resulting in high manufacturing costs and potentially requiring the construction of large dedicated machine rooms. Furthermore, the rotation of the treatment head on the ring-shaped gantry generates induced currents, affecting MRI image quality and hindering intra-treatment target monitoring. Utility Model Content
[0004] The purpose of this invention is to provide a vertical image-guided radiotherapy device in which the patient receives radiation in a standing or sitting posture, the radiation generator is fixed relative to the imaging unit, and multi-angle irradiation is achieved by rotating the patient, thereby solving at least one of the technical problems existing in the background art.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] This utility model provides a vertical image-guided radiotherapy device, comprising:
[0007] A vertical support frame is provided; the vertical support frame is equipped with a lifting unit, which can move along the vertical support frame and pass through the vertical support frame; a beam unit and an imaging unit are provided on the vertical support frame, and the central axes of the beam unit and the imaging unit are located in the same plane and intersect; a support positioning unit is provided on the lifting unit, and the support positioning unit is rotatably mounted on the lifting unit; wherein, the vertical support frame includes a support column, and a support seat is provided on the support column, and the imaging unit and the beam unit are mounted on the support seat.
[0008] Optionally, the lifting unit includes a lifting guide disposed within the vertical support, a lifting frame sliding along the lifting guide, and a lifting actuator connected to the lifting frame; wherein, the lifting guide includes a guide base on one side connected to the bearing column through multiple support blocks and penetrating the vertical support, and the other side of the guide base is slidably connected to the lifting frame.
[0009] Optionally, the lifting frame includes a lifting column slidably connected to the guide base, an upper lifting seat at the top of the lifting column, and a lower lifting seat at the bottom of the lifting column; a guide rail is provided on the side of the guide base opposite to the lifting frame, and a sliding groove corresponding to the guide rail is provided on the lifting column.
[0010] Optionally, the support positioning unit includes a support frame rotatably connected between the upper lifting seat and the lower lifting seat, a positioning frame detachably connected to the support frame, and a human body fixation module detachably connected to the positioning frame.
[0011] Optionally, the support frame includes an upper support base rotatably connected to the upper lifting seat, a lower support base rotatably connected to the lower lifting seat, and a support column connected between the upper support base and the lower support base. The support column is provided with a plurality of placement mounting holes for mounting the placement frame.
[0012] Optionally, the placement frame has a hollow structure with multiple positioning holes or positioning pins on the side. The height of the placement frame relative to the support frame can be adjusted by assembling it with different height placement mounting holes on the support frame. The side of the placement frame also has multiple mounting holes or positioning pins for installing human body fixation modules.
[0013] Optionally, the beam unit includes a beam generator, a beam detector, and a beam blocker; wherein the beam generator is mounted on the support base axially opposite to the central axis of the vertical bracket, and the beam detector and the beam blocker are sequentially mounted on the support base opposite to the beam generator.
[0014] Optionally, the imaging unit includes a hollow magnet; the magnet is mounted on the support, and the radial end face of the magnet has a radial through hole for the beam of the beam unit to pass through.
[0015] Optionally, the imaging unit includes an X-ray tube and an X-ray detector; the X-ray tube and the X-ray detector are mounted facing each other on a support.
[0016] Optionally, the imaging unit includes a hollow magnet, an X-ray tube, and an X-ray detector; the magnet is mounted on the support, and the X-ray tube and the X-ray detector are mounted facing each other on the support; the radial end face of the magnet is provided with a radial through hole for the X-ray beam of the beam unit to pass through; the radial end face of the magnet is also provided with a radial through hole for the X-ray emitted by the X-ray tube to pass through.
[0017] The advantages of this invention are: it adopts an irradiation mode with fixed beam and rotating patient, eliminating the need for a rotating gantry, and utilizes image-guided technology to achieve high-precision irradiation for pre-treatment positioning and target area monitoring during treatment. The overall structure is simple, and the equipment manufacturing and room construction costs are low.
[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of the invention. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a three-dimensional structural diagram of the vertical image-guided radiotherapy device described in Embodiment 1 of this utility model.
[0021] Figure 2 This is a side view of the vertical image-guided radiotherapy device described in Embodiment 1 of this utility model.
[0022] Figure 3 This is a perspective view of the lifting unit of the vertical image-guided radiotherapy device described in Embodiment 1 of this utility model.
[0023] Figure 4 This is a perspective view of the lifting frame structure of the vertical image-guided radiotherapy device described in Embodiment 1 of this utility model.
[0024] Figure 5This is a structural diagram of the support positioning unit of the vertical image-guided radiotherapy device described in Embodiment 1 of this utility model.
[0025] Figure 6 This is a schematic diagram of the treatment state of the vertical image-guided radiotherapy device described in Embodiment 1 of this utility model.
[0026] Figure 7 This is a schematic diagram of the treatment state of the vertical image-guided radiotherapy device described in Embodiment 2 of this utility model.
[0027] Figure 8 This is a schematic diagram of the treatment state of the vertical image-guided radiotherapy device described in Embodiment 3 of this utility model.
[0028] Figure 9 This is a three-dimensional structural diagram of the vertical image-guided radiotherapy device described in Embodiment 4 of this utility model.
[0029] Figure 10 This is a schematic diagram of the positioning state of the vertical image-guided radiotherapy device described in Embodiment 4 of this utility model.
[0030] Figure 11 This is a schematic diagram of the treatment state of the vertical image-guided radiotherapy device described in Embodiment 4 of this utility model.
[0031] Figure 12 This is a schematic diagram of the positioning state of the vertical image-guided radiotherapy device described in Embodiment 5 of this utility model.
[0032] Figure 13 This is a schematic diagram of the treatment state of the vertical image-guided radiotherapy device described in Embodiment 5 of this utility model.
[0033] Figure 14 This is a schematic diagram showing the installation of the multi-beam unit and X-ray imaging unit of the vertical image-guided radiotherapy device described in embodiments 1-5 of this utility model.
[0034] Figure 15 This is a flowchart of the vertical image-guided radiotherapy method of this utility model.
[0035] Wherein: 1-Bearing base; 2-Magnet; 3-Beam detector; 4-Beam blocker; 5-Vertical support; 6-Lifting unit; 7-Bearing column; 8-Beam generator; 9-Beam unit; 10-Supporting positioning unit; 11-Support block; 12-Lifting actuator; 13-Lifting guide; 14-Guide rail; 15-Guide base; 16-Upper lifting seat; 17-Shaft hole; 18-Slide groove; 19-Lifting frame; 20-Lifting column; 21-Rotator 22-Axis; 23-Upper support base; 24-Support frame; 25-Positioning frame; 26-Human body fixation module; 27-Positioning mounting hole; 28-Cable guide groove; 29-Lifting actuator bracket; 30-Step frame; 31-Lifting channel; 32-Pulley frame; 33-Lower lifting seat; 34-Lower support base; 35-Cable; 36-Pulley; 37-Radial through hole; 38-Beam chamber; 39-X-ray tube; 40-X-ray detector. Detailed Implementation
[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0037] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0038] It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless defined as here.
[0039] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the word “comprising” as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, and / or groups thereof.
[0040] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.
[0041] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0042] In the description of this specification, the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this technology and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this technology.
[0043] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of these terms in this art according to the specific circumstances.
[0044] To facilitate understanding of this utility model, the present utility model will be further explained and described below with reference to the accompanying drawings and specific embodiments. The specific embodiments do not constitute a limitation on the embodiments of this utility model.
[0045] Those skilled in the art should understand that the accompanying drawings are merely schematic diagrams of embodiments, and the components in the drawings are not necessarily essential for implementing this utility model.
[0046] Example 1
[0047] like Figures 1 to 6As shown in Embodiment 1, a vertical image-guided radiotherapy device is provided, comprising: a vertical support 5; a lifting unit 6 is provided inside the vertical support 5, the lifting unit 6 being movable along the vertical support 5 and passing through the vertical support 5; a beam unit 9 and an imaging unit are provided on the vertical support 5, the central ray directions of the beam unit 9 and the imaging unit being located in the same plane and intersecting; a support positioning unit 10 is provided on the lifting unit 6, the support positioning unit 10 being rotatably mounted on the lifting unit 6; wherein, the vertical support 5 includes a support column 7, a support seat 1 is provided on the support column 7, and the imaging unit and the beam unit 9 are mounted on the support seat 1.
[0048] In this embodiment 1, the imaging unit is a hollow magnet 2 (i.e., the magnet 2 has an axial through-hole that runs through the entire structure). The magnet 2 is mounted on the support base 1 and is coaxial with the support base 1. In specific applications, the imaging unit may also include only one or more pairs of X-ray tubes 39 and X-ray detectors 40, or the imaging unit may also include a hollow magnet 2 and one or more pairs of X-ray tubes 39 and X-ray detectors 40, with the X-ray tubes 39 and X-ray detectors 40 mounted facing each other on the support base 1. When the imaging unit includes X-ray tubes 39 and X-ray detectors 40, the support base 1 is also provided with radial through-holes for the X-rays from the X-ray tubes 39 to pass through, ensuring that the X-rays reach the X-ray detectors 40.
[0049] Specifically, such as Figure 1 As shown, the vertical support 5 includes a support base 1 mounted on top of two support columns 7. The support base 1 also houses the magnet 2 and the beam unit 9. The lower sides of the support base 1 are connected to and fixedly installed on the ground. The magnet 2 is hollow in the middle for the lifting unit 6 to pass through. The center of the side surface (radial end face) of the magnet 2 has a circular hole, square hole, or annular groove (radial through hole 37) for the beam of the beam unit 9 to pass through. The beam unit 9 includes a beam generator 8, a beam detector 3, and a beam blocker 4. The beam generator 8 is mounted on the support base 1 of the vertical support 5, directly opposite the radial gap in the middle of the magnet 2, and is centrally located relative to the two support columns. The beam detector 3 and the beam blocker 4 are sequentially mounted on the other side of the support base 1, directly opposite the beam generator 8. The beam generator 8 can be a linear accelerator capable of generating electron beams or X-rays, or a proton or heavy ion accelerator. The beam blocker 4 is made of a high atomic number material.
[0050] Specifically, such as Figure 3As shown, the lifting unit 6 includes a lifting guide 13, a lifting frame 19, and a lifting actuation assembly. The side of the lifting frame 19 is slidably connected to the lifting guide 13. One end of the lifting guide 13 is fixedly connected to the bearing column 7 of the vertical support 5 via multiple support blocks 11. The other end of the lifting guide 13 extends into the axial through hole 32 and is fixedly installed on the side wall of the magnet 2. The lifting guide includes a guide base 15 and a guide rail 14, with the guide rail 14 fixedly installed on the guide base 15. One lifting guide 12 is installed on one side of the lifting support 5, or two lifting guides 13 are symmetrically arranged on the vertical support 5. Figure 4 As shown, the lifting frame 19 includes two lifting columns 20, an upper lifting seat 16, and a lower lifting seat 33. The lifting columns 20 have one, two, or more sliding grooves 18 that slide in cooperation with the guide rail 14.
[0051] In this embodiment 1, the lifting actuation assembly includes a lifting actuator 12, a cable 35, a pulley 36, and a pulley frame 32. The lifting actuator 12 is fixed to the ground and operates on a winch principle. One end of the cable 35 is fixed to the lifting column 20 of the lifting frame 19, and the other end is wound around the drum of the winch via the pulley 36. The lifting movement of the lifting frame 19 is achieved by controlling the winding and unwinding of the cable. Two or more guide pulleys are rotatably mounted on the pulley frame 32, which is fixedly installed on the upper part of the support base 1. Figure 3 As shown, a single lifting actuator assembly can be used, or two sets can be symmetrically installed on both sides of the vertical support. To achieve irradiation of the tumor target area from head to toe, one end of the cable 35 is routed around the pulley 36 and connected to the upper surface of the lower lifting seat 33. The lifting column 20 is also provided with a cable guide groove 28 for the cable 35 to pass through, and both the upper lifting seat 16 and the lower lifting seat 33 are provided with coaxial shaft holes 17 for installing the support positioning unit 10.
[0052] Specifically, such as Figure 5As shown, the support positioning unit 10 includes a support frame 23, a positioning frame 24, and a human body fixation module 25. The support frame 23 is rotatably mounted on the lifting frame 19, the positioning frame 24 is detachably mounted on the support frame 23, and the human body fixation module 25 is detachably mounted on the positioning frame 24. The support frame 23 includes an upper support base 22 and a lower support base 34. Two support columns 26 connect the upper support base 22 and the lower support base 34. The upper support base 22 is provided with a rotating shaft 21 that rotatably engages with a shaft hole on the upper lifting seat 16. The lower support base 34 is provided with a rotating shaft that rotatably engages with a shaft hole 17 on the lower lifting seat 33. A rotary actuator (not shown in the figure) can be installed at the bottom of the lower lifting seat 33 to drive the rotating shaft connected to the shaft hole 17 of the lower lifting seat 33. The upper support base 22 and the lower support base 34 are fixedly connected by two support columns 26. The support columns 26 are provided with multiple positioning mounting holes 27 for mounting the positioning frame. The rotary actuator 28 is connected to the rotating shaft on the lower support base 34, which can drive the support frame 23 to rotate relative to the lifting frame 19. The positioning frame 24 has a hollow structure and multiple positioning holes or positioning pins on its side. The height of the positioning frame relative to the support frame can be adjusted by assembling it with the positioning mounting holes of different heights on the support frame. The side of the positioning frame also has multiple mounting holes or positioning pins for installing human body fixation modules. The human body fixation modules can be height-adjustable to fix the human body on the positioning frame and can be thermoplastic film, foam, vacuum bags, etc.
[0053] like Figure 6 The diagram shows the treatment state of the vertical magnetic resonance-guided radiotherapy device in Embodiment 1. The patient stands or sits in the support positioning unit and is fixed in place. The lifting unit lifts the patient upwards, aligning the patient's target area with the beam unit. The magnet images the patient, and the radiotherapy plan is corrected based on the magnetic resonance image. Then, the beam unit emits a beam to irradiate the patient's target area. By rotating the support positioning unit relative to the lifting unit, the incident direction of the beam irradiating the target area can be adjusted. After the beam emission is completed, the lifting unit descends to the initial position, the patient leaves the radiotherapy device, and the single irradiation session ends.
[0054] Example 2
[0055] like Figure 7As shown, the vertical image-guided radiotherapy device provided in Embodiment 2 differs from the vertical image-guided radiotherapy device in Embodiment 1. The only difference in this embodiment is the lifting actuator assembly and its installation position. In this embodiment, the lifting actuator 12 is mounted on the lifting actuator bracket 29, which is mounted on the top of the support base 1. The lifting actuator 12 also employs a winch principle. One end of the cable 35 is fixed to the upper lifting seat 16 of the lifting frame 19, and the other end is wound around the drum of the winch via a pulley 36. The lifting frame 19 is moved up and down by controlling the winding and unwinding of the cable. The lifting actuator bracket 29 has sufficient height to allow the lifting frame 19 to be raised sufficiently high to achieve irradiation of the tumor target area from head to toe. Figure 5 As shown, one set of lifting actuator and its bracket can be used, or two sets can be used symmetrically, installed on both sides above the bearing seat.
[0056] Example 3
[0057] like Figure 8 As shown, the vertical image-guided radiotherapy device provided in Embodiment 3 differs from the vertical image-guided radiotherapy device in Embodiment 1. The only difference in this embodiment is the lifting actuator assembly and its installation position. In this embodiment, the lifting actuator assembly is located below ground level, and the lower lifting seat 33 at the bottom of the lifting frame 19 is connected to the lifting actuator assembly. In this embodiment, the lifting actuator assembly can employ a scissor-type lifting mechanism, or a hydraulic or pneumatic lifting mechanism. Figure 8 The lifting actuator 12 shown is a multi-segment hydraulic rod, which can realize the lifting function through hydraulic control.
[0058] Example 4
[0059] like Figures 9 to 11 As shown, the vertical image-guided radiotherapy device provided in Embodiment 4 differs from Embodiment 1 in that it uses a patient-falling method to align the patient's target area with the beam unit. For example... Figure 9 As shown, the lower part of the vertical support 5 is provided with a support base 1. The imaging unit and the beam unit are mounted on the support base 1. The support base 1 is fixedly installed on the ground. A cylindrical lifting channel 31 of a certain depth is provided in the ground below it for the lifting unit to pass through. Two support columns 7 are provided on both sides of the upper part of the support base 1. A split-type stepped frame is set around the support base 1 in an openable manner. The patient enters the lifting frame through the stepped frame to receive radiation irradiation. The lifting actuator 12 of the lifting unit is arranged on the upper part of the vertical support 5. The end of the cable of the lifting actuator 12 is fixedly connected to the lifting frame 19. The lifting actuator 12 drives the cable to extend or retract to realize the raising or lowering of the lifting frame.
[0060] like Figure 11The diagram shows the treatment state of the vertical image-guided radiotherapy device provided in Embodiment 4. The patient enters the support positioning unit via a stepped frame and is fixed in the support positioning unit in a standing or sitting posture by a human body fixation module. The lifting unit lowers the patient downwards, aligning the patient's target area with the beam unit. The magnet images the patient, and the patient's radiotherapy plan is corrected based on the magnetic resonance image. Then, the beam unit emits a beam to irradiate the patient's target area. By rotating the support positioning unit relative to the lifting unit, the incident direction of the beam irradiating the target area can be adjusted. After the beam emission is completed, the lifting unit rises back to the initial position, the patient leaves the radiotherapy device, and the single irradiation session ends.
[0061] Example 5
[0062] like Figure 12 , 13 As shown, the vertical image-guided radiotherapy device provided in this embodiment 5 is different from the vertical image-guided radiotherapy device in embodiment 4. The only difference in this embodiment is the installation position of the support seat 1. In this embodiment, the support seat 1 is located in the beam chamber 38 below the ground. A cylindrical lifting channel 31 of a certain depth is provided in the ground below the beam chamber 38 for the lifting unit to pass through.
[0063] like Figure 14 As shown, in this invention, the imaging unit may include only one hollow magnet 2, or only one or more pairs of X-ray tubes 39 and X-ray detectors 40. Alternatively, the imaging unit may include a hollow magnet 2 and one or more pairs of X-ray tubes 39 and X-ray detectors 40, with the X-ray tubes 39 and X-ray detectors 40 mounted facing each other on the support 1. When the imaging unit includes X-ray tubes 39 and X-ray detectors 40, the support 1 also has radial through holes for the X-rays from the X-ray tubes 39 to pass through, ensuring that the X-rays reach the X-ray detectors 40.
[0064] like Figure 15 As shown, the method for performing radiotherapy using the vertical image-guided radiotherapy device described in this embodiment of the invention includes the following steps:
[0065] Step 1: The patient stands or sits in the support positioning unit and is then secured.
[0066] Step 2: The lifting unit moves the patient to the treatment position, aligning the beam unit with the patient's target area;
[0067] Step 3: The imaging unit images the patient, and the patient's position or radiotherapy plan is corrected based on the image;
[0068] Step 4: The beam from the beam unit irradiates the patient's target area;
[0069] Step 5: After the beam exits, the lifting unit returns the patient to the initial position;
[0070] Step Six: The patient leaves the radiotherapy device, ending the current irradiation session.
[0071] In step one, the patient can be fixed using a positioning device such as a thermoplastic film or a vacuum pad; in step two, the lifting unit can move the patient to the treatment position by rising or falling; in step three, the radiotherapy plan can be modified based on magnetic resonance images, X-ray images, etc.; in step four, the incident direction of the beam irradiation target area can be adjusted by rotating the supporting positioning unit relative to the lifting unit.
[0072] In summary, the vertical image-guided radiotherapy device described in this embodiment employs a fixed beam and rotating patient irradiation mode, eliminating the need for a rotating gantry. It utilizes image-guided technology to achieve high-precision irradiation for pre-treatment positioning / plan modification and intra-treatment target area monitoring. The overall structure is simple, and the equipment manufacturing and room construction costs are low. The patient receives radiation in a standing or sitting position, with the radiation generator fixed relative to the imaging unit. Multi-angle irradiation is achieved by rotating the patient.
[0073] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that, based on the technical solutions disclosed in the present utility model, all modifications or variations that can be made by those skilled in the art without creative effort should be included within the scope of protection of the present utility model.
Claims
1. A vertical image-guided radiotherapy device, characterized in that, include: A vertical support frame is provided; a lifting unit is provided within the vertical support frame, the lifting unit being movable along the vertical support frame and capable of penetrating the vertical support frame; a beam unit and an imaging unit are provided on the vertical support frame, the central ray directions of the beam unit and the imaging unit being located on the same plane and intersecting; a support positioning unit is provided on the lifting unit, the support positioning unit being rotatably mounted on the lifting unit; wherein... The vertical support includes a support column, on which a support base is provided, and the imaging unit and the beam unit are mounted on the support base.
2. The vertical image-guided radiotherapy device according to claim 1, characterized in that, The lifting unit includes a lifting guide disposed within the vertical support, a lifting frame sliding along the lifting guide, and a lifting actuator connected to the lifting frame; wherein, the lifting guide includes a guide base on one side connected to the bearing column through multiple support blocks and penetrating the vertical support, and the other side of the guide base is slidably connected to the lifting frame.
3. The vertical image-guided radiotherapy device according to claim 2, characterized in that, The lifting frame includes a lifting column slidably connected to the guide base, an upper lifting seat at the top of the lifting column, and a lower lifting seat at the bottom of the lifting column; a guide rail is provided on the side of the guide base opposite to the lifting frame, and a sliding groove corresponding to the guide rail is provided on the lifting column.
4. The vertical image-guided radiotherapy device according to claim 3, characterized in that, The support positioning unit includes a support frame that is rotatably connected between the upper lifting seat and the lower lifting seat. The support frame is detachably connected to a positioning frame, and a human body fixation module is detachably connected to the positioning frame.
5. The vertical image-guided radiotherapy device according to claim 4, characterized in that, The support frame includes an upper support base rotatably connected to the upper lifting seat, a lower support base rotatably connected to the lower lifting seat, and a support column connecting the upper support base and the lower support base. The support column is provided with a plurality of placement mounting holes for mounting the placement frame.
6. The vertical image-guided radiotherapy device according to claim 5, characterized in that, The placement frame has a hollow structure with multiple positioning holes or positioning pins on its side. The height of the placement frame relative to the support frame can be adjusted by assembling it with different height placement mounting holes on the support frame. The side of the placement frame also has multiple mounting holes or positioning pins for installing human body fixation modules.
7. The vertical image-guided radiotherapy device according to any one of claims 1-6, characterized in that, The beam unit includes a beam generator, a beam detector, and a beam blocker; wherein the beam generator is mounted on the support base axially opposite to the central axis of the vertical bracket, and the beam detector and the beam blocker are mounted on the support base in sequence opposite to the beam generator.
8. The vertical image-guided radiotherapy device according to claim 7, characterized in that, The imaging unit includes a hollow magnet; the magnet is mounted on the support base, and the radial end face of the magnet is provided with a radial through hole for the X-ray beam of the beam unit to pass through.
9. The vertical image-guided radiotherapy device according to claim 7, characterized in that, The imaging unit includes an X-ray tube and an X-ray detector; the X-ray tube and the X-ray detector are mounted facing each other on a support.
10. The vertical image-guided radiotherapy device according to claim 7, characterized in that, The imaging unit includes a hollow magnet, an X-ray tube, and an X-ray detector; the magnet is mounted on the support, and the X-ray tube and the X-ray detector are mounted facing each other on the support; the radial end face of the magnet is provided with a radial through hole for the X-ray beam of the beam unit to pass through; the radial end face of the magnet is also provided with a radial through hole for the X-ray emitted by the X-ray tube to pass through.