FLASH radiotherapy device rack

Abstract

The utility model discloses a FLASH radiotherapy device rack, comprising a support system comprising a rotating support and a support pedestal, the rotating support being rotatably installed on the support pedestal; the driving system is mounted on the supporting base and drives the rotating bracket to rotate; the beam current system comprises a plurality of beam treatment heads arranged in the circumferential direction of the rotating support, and treatment beams generated by the beam treatment heads pass through the center of the rotating support; the beam dose detection system comprises a plurality of MV flat panel detectors arranged in the circumferential direction of the rotating support, and the MV flat panel detectors are arranged in one-to-one correspondence with the beam treatment heads and used for receiving treatment beams generated by the beam treatment heads for dose detection; the image guiding system is installed on the rotating support, and the image guiding system is used for imaging a target area of a patient and guiding radiotherapy. According to the FLASH radiotherapy device rack provided by the utility model, safe and effective operation of the FLASH radiotherapy device can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to radiotherapy equipment technical field, specifically relates to a FLASH radiotherapy device rack. BACKGROUND

[0002] FLASH radiotherapy is a kind of radiotherapy technology with superhigh dose rate irradiation as main feature, and the superhigh dose rate used is generally more than 40Gy / s, and the irradiation time is usually less than 500ms, FLASH radiotherapy can significantly reduce the damage of radiation to normal tissue, while effectively retaining the killing ability of radiation to tumor site, FLASH radiotherapy device usually includes beam system, dose detection system, image guiding system and other components, these components need to be reasonably installed on FLASH radiotherapy device rack, to ensure the safety and accuracy of device.

[0003] Therefore, the utility model provides a FLASH radiotherapy device rack to ensure the safe and effective operation of FLASH radiotherapy device.

[0004] Therefore, the utility model provides a FLASH radiotherapy device rack to ensure the safe and effective operation of FLASH radiotherapy device. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a FLASH radiotherapy device rack to realize the safe and effective operation of FLASH radiotherapy device.

[0006] A FLASH radiotherapy device rack, comprising:

[0007] A support system comprising a rotating support and a support base, the rotating support is rotatably installed on the support base;

[0008] A drive system installed on the support base drives the rotating support to rotate;

[0009] A beam system comprising a plurality of beam therapy heads arranged along the circumference of the rotating support, and the treatment beam generated by each beam therapy head passes through the center of the rotating support;

[0010] A beam dose detection system comprising a plurality of MV flat panel detectors arranged along the circumference of the rotating support, each MV flat panel detector is arranged one-to-one corresponding to each beam therapy head, and is used for receiving the treatment beam generated by the beam therapy head to detect the dose;

[0011] An image guiding system installed on the rotating support, the image guiding system is used for imaging the target region of the patient and guiding the radiotherapy.

[0012] As an optional implementation manner of the utility model, the rotating support includes a rotating outer ring and a polygonal support arranged inside the rotating outer ring, the polygonal support includes a first polygonal frame body, a second polygonal frame body opposite to the first polygonal frame body, and a first connecting plate body connecting the first polygonal frame body and the second polygonal frame body, the first connecting plate body includes a plurality of plate bodies uniformly distributed along the circumferences of the first polygonal frame body and the second polygonal frame body.

[0013] The rotating outer ring includes a first rotating ring body located at the outer circumference of the first polygonal frame body and a second rotating ring body located at the outer circumference of the second polygonal frame body.

[0014] As an optional implementation manner of the utility model, one end of each beam therapy head is respectively mounted on each side frame of the first polygonal frame body, and the other end extends to one side of the second polygonal frame body.

[0015] Each MV flat panel detector is respectively mounted on each side frame of the second polygonal frame body.

[0016] As an optional implementation manner of the utility model, an MV flat panel support is respectively mounted on each side frame of the second polygonal frame body, and the MV flat panel detector is respectively mounted on the MV flat panel support.

[0017] As an optional implementation manner of the utility model, the image guide system includes an X-ray ball tube and a KV flat panel detector, the X-ray ball tube and the KV flat panel detector are both mounted on the second polygonal frame body, and the X-ray ball tube and the KV flat panel detector are oppositely arranged.

[0018] As an optional implementation manner of the utility model, a reversible ball tube support and a reversible KV flat panel support are respectively mounted on the two ends of a diagonal line passing through the center of the second polygonal frame body, the X-ray ball tube is mounted on the ball tube support, and the KV flat panel detector is mounted on the KV flat panel support.

[0019] As an optional implementation manner of the utility model, an inner ring is arranged inside the second polygonal frame body, and the second polygonal frame body and the inner ring are fixedly connected through a second connecting plate body.

[0020] The KV flat panel support is reversibly mounted on the inner ring, the ball tube support is reversibly mounted on the second polygonal frame body, the ball tube support is turned towards the KV flat panel support, the X-ray ball tube is turned to the inner ring and oppositely arranged with the KV flat panel support.

[0021] As optional implementation manner of the utility model, the support base has arc recess, first drive wheel and first driven wheel, second drive wheel and second driven wheel are arranged respectively on both ends of arc recess on the support base, the bottom of first rotating ring body and second rotating ring body is arranged in the arc recess, the first drive wheel drives the rotation of first rotating ring body, first rotating ring body and first driven wheel are in rolling contact, the second drive wheel drives the rotation of second rotating ring body, second rotating ring body and second driven wheel are in rolling contact.

[0022] As optional implementation manner of the utility model, the first drive wheel and second drive wheel are friction wheel, first drive wheel and first rotating ring body are in rolling friction contact, second drive wheel and second rotating ring body are in rolling friction contact;

[0023] Or, the first drive wheel and second drive wheel are drive gear, the outer periphery of first rotating ring body and second rotating ring body is provided with outer meshing tooth respectively, the first drive wheel and the outer meshing tooth of first rotating ring body are in meshing transmission, the second drive wheel and the outer meshing tooth of second rotating ring body are in meshing transmission.

[0024] As optional implementation manner of the utility model, the drive system includes drive motor and speed reducer, the drive motor is in transmission connection with the speed reducer, the speed reducer has two same-speed same-direction outputs and is in transmission connection with first drive wheel and second drive wheel respectively.

[0025] Compared with prior art, the utility model has the advantages of:

[0026] The FLASH radiotherapy device rack of the utility model, the beam current system includes a plurality of beam treatment heads arranged along the circumference of the rotating support, can emit beams from various directions, and each group of beam treatment heads can generate beam currents with different dose rates according to requirements, so as to meet the FLASH radiotherapy ultra-high dose rate clinical requirements.

[0027] The FLASH radiotherapy device rack of the utility model, the beam current system is uniformly distributed on the rotating support, so that the rotating support is uniformly stressed, and the FLASH radiotherapy precision is improved.

[0028] The FLASH radiotherapy device rack of the utility model, the front surface of the MV flat panel detector is perpendicular to the X-rays generated by the beam current system, and is used for detecting the consistency of the X-ray dose generated by the beam current system and the planned dose.

[0029] The FLASH radiotherapy device rack of the utility model, the image guide system realizes accurate treatment by monitoring the lesion site in real time during treatment and adjusting the treatment parameters in time according to the change of the lesion position.

[0030] The image guiding system realizes accurate treatment by monitoring the lesion part in real time during the treatment process and adjusting the treatment parameters in time according to the change of the lesion position.

[0031] Therefore, the FLASH radiotherapy device rack can ensure safe and effective operation of the FLASH radiotherapy device. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 The utility model discloses a kind of FLASH radiotherapy device racks, and the three-dimensional structure schematic diagram of a kind of FLASH radiotherapy device rack of the utility model embodiment is as shown in the figure;

[0033] Figure 2 The utility model discloses a kind of FLASH radiotherapy device racks, and the three-dimensional structure schematic diagram of a kind of FLASH radiotherapy device rack of the utility model embodiment is as shown in the figure;

[0034] Figure 3 The utility model discloses a kind of FLASH radiotherapy device racks, and the three-dimensional structure schematic diagram of a kind of FLASH radiotherapy device rack of the utility model embodiment is as shown in the figure;

[0035] Figure 4 The utility model discloses a kind of FLASH radiotherapy device racks, and the three-dimensional structure schematic diagram of a kind of FLASH radiotherapy device rack of the utility model embodiment is as shown in the figure. DETAILED DESCRIPTION

[0036] To make the purpose, technical scheme and advantage of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment.

[0037] Therefore, the following detailed description of the embodiment of the utility model is not intended to limit the scope of the claimed utility model, but only represents part of the embodiment of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the utility model protection.

[0038] It should be noted that, in the case of no conflict, the embodiment in the utility model and the features and technical solutions in the embodiment can be combined with each other.

[0039] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0040] In the description of the utility model, it needs to explain, the direction or position relation indicated by the term "upper", "lower" and the like is based on the direction or position relation shown in the drawing, or is the direction or position relation that the utility model product is usually placed when using, or is the direction or position relation that the person skilled in the art usually understands, these terms are only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it can not be understood as the limitation of the utility model.In addition, the terms "first", "second" and the like are only used for distinguishing description, and can not be understood as indicating or implying relative importance.

[0041] Referring to Figures 1-4 The FLASH radiotherapy device rack of the embodiment comprises:

[0042] A support system comprises a rotating support 7 and a support base 18, and the rotating support 7 is rotatably installed on the support base 18.

[0043] A driving system 21 is installed on the support base 18 and drives the rotating support 7 to rotate.

[0044] A beam current system 17 comprises a plurality of beam therapy heads arranged along the circumference of the rotating support 7, and the treatment beam generated by each beam therapy head passes through the center of the rotating support 7.

[0045] A beam dose detection system comprises a plurality of MV flat panel detectors 1 arranged along the circumference of the rotating support 7, each MV flat panel detector 1 is arranged in one-to-one correspondence with each beam therapy head, and is used for receiving the treatment beam generated by the beam therapy head to perform dose detection.

[0046] An image guidance system is installed on the rotating support 7, and the image guidance system is used for imaging the target region of the patient and guiding radiotherapy.

[0047] The FLASH radiotherapy device rack of the embodiment, the beam current system 17 comprises a plurality of beam therapy heads arranged along the circumference of the rotating support 7, and can emit beams from each direction, and each group of beam therapy heads can generate beams with different dose rates according to requirements, meeting the clinical requirements of FLASH radiotherapy with ultra-high dose rate.

[0048] The FLASH radiotherapy device rack of the embodiment, the beam current system 17 is uniformly distributed on the rotating support 7, so that the rotating support 7 is uniformly stressed, and the FLASH radiotherapy precision is improved.

[0049] The FLASH radiotherapy device rack of the embodiment, the MV flat panel detector 1 is perpendicular to the X-rays generated by the beam current system 17, and is used for detecting the consistency of the X-ray dose generated by the beam current system 17 and the planned dose.

[0050] The FLASH radiotherapy device rack of the embodiment, the image guidance system realizes accurate treatment by monitoring the lesion site in real time during treatment and adjusting the treatment parameters in time according to the change of the lesion position.

[0051] The FLASH radiotherapy device rack of the embodiment, the image guidance system realizes accurate treatment by monitoring the lesion site in real time during treatment and adjusting the treatment parameters in time according to the change of the lesion position.

[0052] Therefore, the FLASH radiotherapy device rack can guarantee the safe and effective operation of the LASH radiotherapy device.

[0053] The MV flat panel detector 1 of the embodiment is suitable for high-energy X-ray imaging and is commonly used for dose measurement and verification in radiotherapy.

[0054] As an optional embodiment of the embodiment, referring to FIG. Figure 2 As shown in the figure, the rotating support 7 includes a rotating outer ring 9 and a polygonal support 8 arranged inside the rotating outer ring 9, the polygonal support 8 includes a first polygonal frame body 801, a second polygonal frame body 802 opposite to the first polygonal frame body 801, and a first connecting plate body 803 connecting the first polygonal frame body 801 and the second polygonal frame body 802, the first connecting plate body 803 includes a plurality of plate bodies uniformly distributed along the circumferences of the first polygonal frame body 801 and the second polygonal frame body 802; the rotating outer ring 9 includes a first rotating ring body 901 located at the outer circumference of the first polygonal frame body 801 and a second rotating ring body 902 located at the outer circumference of the second polygonal frame body 802.

[0055] The rotating support 7 is rotated by driving the rotating outer ring 9, and the beam current system 17, the beam dose detection system, the image guidance system and the like are installed by the polygonal support 8.

[0056] Further, one end of each of the beam treatment heads is respectively mounted on each of the frame edges of the first polygonal frame body 801, and the other end extends to one side of the second polygonal frame body 802; each of the MV flat panel detectors 1 is respectively mounted on each of the frame edges of the second polygonal frame body 802.

[0057] In order to install the MV flat panel detector 1, in this embodiment, MV flat panel brackets 10 are respectively installed on each side of the second polygonal frame 802, and the MV flat panel detector 1 is respectively installed on the MV flat panel brackets 10.

[0058] As an optional implementation of this embodiment, the image guidance system of this embodiment includes an X-ray tube 2 and a KV flat panel detector 5. The X-ray tube 2 and the KV flat panel detector 5 are both mounted on the second polygonal frame 802, and the X-ray tube 2 and the KV flat panel detector 5 are arranged opposite to each other.

[0059] The KV flat panel detector 5 is primarily used for low-energy X-ray imaging, typically in medical imaging and industrial inspection. Due to its low energy, the KV flat panel detector provides good visualization of soft tissues. The KV flat panel detector 5 usually uses an amorphous silicon flat panel detector. X-rays irradiate an amorphous silicon layer, generating electron-hole pairs. After electric field separation, these pairs form a current signal, which is ultimately converted into a digital image. It is suitable for low-energy X-ray imaging in medical imaging and industrial inspection.

[0060] As an optional implementation of this embodiment, in this embodiment, a rotatable X-ray tube support 3 and a rotatable KV flat plate support 6 are respectively installed on the two diagonal ends of the second polygonal frame 802 located through the center. The X-ray tube 2 is installed on the X-ray tube support 3, and the KV flat plate detector 5 is installed on the KV flat plate support 6.

[0061] In this embodiment, the KV flat panel detector 5 is deployed via a flip-out KV flat panel support 6 during operation to monitor the lesion site. When the beam is emitted from the beam system 17 for treatment, it is retracted via the KV flat panel support 6 to avoid X-ray obstruction and affect the treatment effect, while also preventing X-ray damage to the KV flat panel detector 5.

[0062] In this embodiment, the X-ray tube 2 and KV flat panel detector 5 can be flipped and folded to avoid blocking X-rays. At the same time, the image guidance system can rotate on the rotating gantry 7, which can acquire information about the patient's lesion site from all directions to achieve precise radiotherapy.

[0063] Specifically, in this embodiment, an inner ring 804 is provided inside the second polygonal frame 802, and the second polygonal frame 802 and the inner ring 804 are fixedly connected by a second connecting plate 805; the KV plate bracket 6 is rotatably mounted on the inner ring 804, and the X-ray tube bracket 3 is rotatably mounted on the second polygonal frame 802, with the X-ray tube bracket 3 rotatably facing the KV plate bracket 6, and the X-ray tube 2 is located on the inner ring 804 and opposite to the KV plate bracket 6.

[0064] Referring to Figure 3 As shown in the drawings, the support base 10 of the embodiment has a circular arc-shaped groove 19, and the first driving wheel 22 and the first driven wheel 23, the second driving wheel 11 and the second driven wheel 20 are arranged at both ends of the circular arc-shaped groove 19 on the support base 10. The bottom of the first rotating ring body 901 and the second rotating ring body 902 is arranged in the circular arc-shaped groove 19. The first driving wheel 22 drives the first rotating ring body 901 to rotate, and the first rotating ring body 901 is in rolling contact with the first driven wheel 23. The second driving wheel 11 drives the second rotating ring body 902 to rotate, and the second rotating ring body 902 is in rolling contact with the second driven wheel 20.

[0065] Specifically, the first driving wheel 22 and the second driving wheel 11 of the embodiment are both friction wheels, and the first driving wheel 22 is in rolling frictional contact with the first rotating ring body 901, and the second driving wheel 11 is in rolling frictional contact with the second rotating ring body 902.

[0066] Alternatively, the first driving wheel 22 and the second driving wheel 11 are both driving gears, and the first rotating ring body 901 and the second rotating ring body 902 are respectively provided with external meshing teeth. The first driving wheel 22 meshes with the external meshing teeth of the first rotating ring body 901 for transmission, and the second driving wheel 11 meshes with the external meshing teeth of the second rotating ring body 902 for transmission.

[0067] It should be noted that the driving mode of the first rotating ring body 901 and the second rotating ring body 902 of the embodiment is not limited to the above-mentioned friction transmission and gear transmission, but can also be chain wheel transmission, belt transmission, worm and gear transmission, etc.

[0068] Further, the FLASH radiotherapy device rack of the embodiment has a driving system 21, which includes a driving motor 12 and a speed reducer 13. The driving motor 12 is in transmission connection with the speed reducer 13. The speed reducer 13 has two same-speed same-direction outputs, which are respectively in transmission connection with the first driving wheel 22 and the second driving wheel 11.

[0069] Referring to Figure 4 As shown in the drawings, the beam current system 17 of the embodiment includes a plurality of medical linear accelerator tubes 15 and a plurality of microwave power sources 16. Each of the microwave power sources 16 corresponds to one of the medical linear accelerator tubes 15. The microwave power sources 16 are configured to provide microwaves for the medical linear accelerator tubes 15, so that the medical linear accelerator tubes 15 form acceleration electric fields.

[0070] The beam current system 17 of the embodiment comprises a multi-leaf collimator 14 mounted at the front end of the medical linear accelerator tube 15, and the multi-leaf collimator 14 comprises a plurality of leaves arranged in one-to-one correspondence at the beam outlet end, and is configured to be conformal to the target treatment target area and can be conformal to the tumor according to the shape of the target treatment target area and the radiotherapy plan.

[0071] The above embodiments are only used to illustrate the technical solutions described in the utility model and not to limit the utility model. Although the utility model has been described in detail with reference to the above embodiments, the utility model is not limited to the above specific embodiments, and any modification or equivalent replacement of the utility model is allowed. Any technical solution and improvement which does not deviate from the spirit and scope of the utility model is covered in the scope of the claims of the utility model.

Claims

1. A FLASH radiotherapy device gantry, characterized in that, The application relates to a radiotherapy device, comprising: a support system, comprising a rotating support and a support base, wherein the rotating support is rotatably installed on the support base; a driving system, installed on the support base, for driving the rotating support to rotate; a beam bundle system, comprising a plurality of beam therapy heads arranged along the circumference of the rotating support, wherein each beam therapy head generates a treatment beam through the center of the rotating support; a beam dose detection system, comprising a plurality of MV flat panel detectors arranged along the circumference of the rotating support, wherein each MV flat panel detector is arranged in one-to-one correspondence with each beam therapy head, and is used for receiving the treatment beam generated by the beam therapy head to perform dose detection; an image guidance system, installed on the rotating support, for imaging a target region of a patient to guide radiotherapy.

2. The FLASH radiotherapy device gantry of claim 1, wherein, The rotating support comprises a rotating outer ring and a polygonal support arranged inside the rotating outer ring, wherein the polygonal support comprises a first polygonal frame, a second polygonal frame arranged in parallel with the first polygonal frame, and a first connecting plate body connecting the first polygonal frame and the second polygonal frame, and the first connecting plate body comprises a plurality of plate bodies uniformly distributed along the circumference of the first polygonal frame and the second polygonal frame. The rotating outer ring comprises a first rotating ring body located at the outer periphery of the first polygonal frame and a second rotating ring body located at the outer periphery of the second polygonal frame.

3. The FLASH radiotherapy device gantry of claim 2, wherein, One end of each of the beam therapy heads is respectively installed on each edge frame of the first polygonal frame, and the other end extends to one side of the second polygonal frame. Each of the MV flat panel detectors is respectively installed on each edge frame of the second polygonal frame.

4. The FLASH radiotherapy device gantry of claim 3, wherein, Each edge frame of the second polygonal frame is respectively provided with an MV flat panel support, and each MV flat panel detector is respectively installed on the MV flat panel support.

5. The FLASH radiotherapy device gantry of claim 3, wherein, The image guidance system comprises an X-ray ball tube and a KV flat panel detector, wherein the X-ray ball tube and the KV flat panel detector are both installed on the second polygonal frame, and the X-ray ball tube and the KV flat panel detector are arranged in opposition.

6. The FLASH radiotherapy device gantry of claim 5, wherein, The X-ray ball tube is installed on the ball tube support, and the KV flat panel detector is installed on the KV flat panel support.

7. The FLASH radiotherapy device gantry of claim 6, wherein, An inner frame ring is arranged inside the second polygonal frame, and the second polygonal frame and the inner frame ring are fixedly connected through a second connecting plate body. The KV flat panel support is rotatably installed on the inner frame ring, and the ball tube support is rotatably installed on the second polygonal frame, the ball tube support is turned towards the KV flat panel support, the X-ray ball tube is turned to the inner frame ring and is arranged in opposition to the KV flat panel support.

8. The FLASH radiotherapy device gantry of claim 2, wherein, The support base has a circular-arc-shaped groove, first driving wheels and first driven wheels are arranged at two ends of the circular-arc-shaped groove respectively, and second driving wheels and second driven wheels are arranged at the two ends of the circular-arc-shaped groove respectively, the bottom of the first rotating ring body and the second rotating ring body is arranged in the circular-arc-shaped groove, the first driving wheels drive the first rotating ring body to rotate, the first rotating ring body is in rolling contact with the first driven wheels, the second driving wheels drive the second rotating ring body to rotate, and the second rotating ring body is in rolling contact with the second driven wheels.

9. The FLASH radiotherapy device gantry of claim 8, wherein, The first driving wheels and the second driving wheels are friction wheels, the first driving wheels are in rolling friction contact with the first rotating ring body, and the second driving wheels are in rolling friction contact with the second rotating ring body. Alternatively, the first driving wheels and the second driving wheels are driving gears, the first rotating ring body and the second rotating ring body are respectively provided with outer meshing teeth, the first driving wheels are in meshing transmission with the outer meshing teeth of the first rotating ring body, and the second driving wheels are in meshing transmission with the outer meshing teeth of the second rotating ring body.

10. The FLASH radiotherapy device gantry of claim 8, wherein, The driving system comprises a driving motor and a speed reducer, the driving motor is in transmission connection with the speed reducer, and the speed reducer has two same-speed same-direction outputs which are in transmission connection with the first driving wheels and the second driving wheels respectively.

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