Photon flash therapy device, photon beam forming method and computer readable storage medium

Abstract

The invention relates to a photon flash therapy device, a photon beam forming method and a computer readable storage medium. The photon flash therapy device comprises an electron beam generator, an electron cyclotron, a guide assembly, a deflection magnet and a target assembly. When the photon flash therapy device works, electron beams generated by the electron beam generator are subjected to cyclotron acceleration treatment by using the electron cyclotron and are led out, the electron beams are converged on the target assembly after being sequentially subjected to first deflection of the guide assembly and second deflection of the deflection magnet, and photon beams are formed by the electron beams through the target assembly. Therefore, the size of the photon flash therapy device can be greatly reduced, and the manufacturing cost can be reduced; meanwhile, the efficiency and the flexibility of adjusting the target position formed after electron beams are converged when the photon flash therapy device works can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field related to medical devices, and in particular, relates to a photon flash therapy device, a photon beam forming method and a computer-readable storage medium. Background Art

[0002] Flash therapy is a treatment option for tumor radiotherapy. The dose rate of flash therapy is many times higher than that of current radiotherapy and can provide precise doses.

[0003] At present, the existing flash therapy scheme using photon beams usually uses a superconducting accelerator to generate the required beam, and realizes multi-angle irradiation through a rotatable frame. Although the above scheme can generate photon beams suitable for flash therapy and realize irradiation of tumors at different angles, due to the linear acceleration method of superconducting accelerators when working, the equipment using this scheme is not only large in size, but also has high construction costs and subsequent maintenance costs; in addition, the mechanical operation adjustment of adjusting the emission angle of the photon beam by rotating the frame to adapt to the different tumor locations of different patients is not only inconvenient to operate, but also has low adjustment efficiency. Summary of the invention

[0004] In view of this, it is necessary to provide a photon flash therapy device, a photon beam forming method and a computer-readable storage medium for solving the above-mentioned technical problems.

[0005] A photon flash therapy device, comprising:

[0006] an electron beam generator for generating an electron beam;

[0007] An electron cyclotron accelerator, used for cyclotron-accelerating the electron beam and extracting the accelerated electron beam;

[0008] A guide component is provided on a travel path of the accelerated electron beam, and the guide component is capable of performing a first deflection process on the accelerated electron beam;

[0009] a deflection magnet capable of performing a second deflection process on the electron beam after the first deflection process; and

[0010] The target assembly is used to form a photon beam by receiving the electron beam after the first deflection process or the second deflection process.

[0011] It can be understood that the electron beam is accelerated by cyclotron acceleration, so that the electron beam can be accelerated for multiple consecutive cycles when the electron cyclotron is working. In this way, the volume required by the electron cyclotron to accelerate the electron beam to a photon beam that meets the requirements of flash therapy can be reduced, and the electron beam acceleration efficiency can be improved, thereby reducing the volume of the photon flash therapy device and reducing the cost. At the same time, the photon flash therapy device can achieve the purpose of controlling the target position to which the final photon beam is converged or delivered by controlling the intensity of the magnetic field generated by the guide component when it is working. In this way, the efficiency and flexibility of adjusting the target position formed after the electron beam is converged when the photon flash therapy device is working are improved. The ray delivery device can change the different angles of the photon beam injection according to needs to meet the needs of the photon flash therapy device for patient flash therapy.

[0012] In one of the embodiments, the guide assembly is spaced apart from the deflection magnet by a distance in the plane direction of the deflection magnet.

[0013] In one embodiment, the deflection magnets are arranged to be distributed around a ring.

[0014] It can be understood that the deflection magnets are configured to be distributed around a ring, so that the electron beam after the second deflection by the deflection magnet can be injected into the target component at any angle according to the requirements of use, further improving the efficiency and flexibility of adjusting the target position formed after the photon beam is converged when the photon flash therapy device is working.

[0015] In one embodiment, further comprising:

[0016] A radiation delivery device includes one or both of a target assembly and a multi-leaf collimator.

[0017] In one embodiment, the number of the radiation delivery device is one, and the radiation delivery device is movable around the target location; or

[0018] There are multiple radiation delivery devices, which are arranged at intervals around the target position, wherein each of the radiation delivery devices is fixed relative to the target position.

[0019] In one embodiment, two groups of deflection magnets are included, and the two groups of deflection magnets are symmetrically arranged on both sides of the target position.

[0020] In one of the embodiments, the photon flash therapy device further comprises a beam splitter, which is used to guide the electron beam to the two guide components via different paths, and the two guide components correspond to the two groups of deflection magnets respectively.

[0021] It can be understood that the electron beam is distributed by a beam splitter so that the photon flash therapy device can achieve 360° coverage when it is working. In this way, the photon beam can fully cover the target position when the photon flash therapy device is working, and the flash therapy effect of the patient can be improved.

[0022] In one embodiment, the electron cyclotron accelerator includes an accelerating cavity and two sets of vector magnets, wherein the two sets of vector magnets are symmetrically arranged on both sides of the accelerating cavity, and are used to guide the electron beam emitted from the accelerating cavity to be re-injected into the accelerating cavity;

[0023] The accelerating cavity is capable of accelerating the electron beam in the accelerating cavity.

[0024] In one embodiment, the electron cyclotron accelerator further comprises an extraction component, which is arranged on a circulation path of the electron beam in the electron cyclotron accelerator and is used to extract the electron beam formed after acceleration;

[0025] Wherein, the position of the lead-out component can be adjusted relative to the electron cyclotron.

[0026] It can be understood that by changing the position of the lead-out component in the electron cyclotron, different energy selections for the electron beam derived from the electron cyclotron can be achieved, thereby facilitating the selection and control of electron beams of different energies from the electron cyclotron and meeting different usage requirements when the photon flash therapy device is working.

[0027] In one embodiment, the electron cyclotron accelerator is configured as an electron induction accelerator, a petal-type accelerator, or a racetrack-type accelerator.

[0028] In one of the embodiments, the magnetic field strength or electric field strength generated by the guide assembly can be adjusted so that the deflection angle of the electron beam after the first deflection process can be changed within a preset range.

[0029] It can be understood that by adjusting the magnetic field strength or electric field strength generated by the lock when the guide component is working, the deflection angle of the electron beam after the first deflection processing of the guide component can be adjusted, and the purpose of changing the target position can be achieved, thus facilitating the adjustment of the target position.

[0030] The present application also claims protection for a photon beam forming method, comprising:

[0031] Cyclotron acceleration of the electron beam by an electron cyclotron;

[0032] Performing a first deflection process on the accelerated electron beam using a guide assembly and guiding the accelerated electron beam to a deflection magnet;

[0033] Performing a second deflection process on the electron beam after the first deflection process using the deflection magnet; and

[0034] Using an electron beam, a photon beam is formed through a target assembly.

[0035] The present application also claims protection for a computer-readable storage medium having instructions stored thereon, which, when executed by a processor, implement the above-mentioned photon beam forming method.

[0036] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0037] The photon flash therapy device, photon beam forming method and computer-readable storage medium of the present invention use cyclotron acceleration to accelerate the electron beam, so that the electron cyclotron accelerator can perform multiple consecutive acceleration processes on the electron beam when it is working. In this way, the volume required by the electron cyclotron accelerator to accelerate the electron beam to a photon beam that meets the flash therapy requirements can be reduced, and the electron beam acceleration efficiency can be improved, thereby reducing the volume of the photon flash therapy device and reducing the cost; the photon flash therapy device can achieve the purpose of controlling the target position to which the final photon beam is converged or delivered by controlling the intensity of the magnetic field generated by the guide component when it is working, thus improving the efficiency and flexibility of adjusting the target position formed after the electron beam is converged when the photon flash therapy device is working; the ray delivery device can change the different angles of the photon beam injection according to the needs to meet the use requirements of the photon flash therapy device for patient flash therapy; the electron beam and the deflection magnet after the first deflection process are located on the same plane, which can meet specific space requirements and can be conveniently used in combination with other types of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 This is a schematic structural diagram of a photon flash therapy device according to an embodiment of the present application;

[0040] Figure 2 This is a schematic structural diagram of a photon flash therapy device according to another embodiment of the present application.

[0041] Figure numerals: 100, photon flash therapy device; 10, electron beam generator; 20, electron cyclotron accelerator; 21, acceleration cavity; 22, vector magnet; 23, extraction component; 30, guide assembly; 40, deflection magnet; 50, ray delivery device; 51, target assembly; 52, multi-leaf grating; 60, beam splitter; 70, hospital bed; 80, vacuum pump. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that when an element is referred to as being "provided on" another element, it may be directly provided on the other element or there may be a central element. When an element is considered to be "provided on" another element, it may be directly provided on the other element or there may be a central element at the same time. When an element is considered to be "fixed to" another element, it may be directly fixed to the other element or there may be a central element at the same time.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0045] The present application claims protection for a photon flash therapy device 100, which can be used to generate a photon beam suitable for flash therapy. As an example, the photon beam may include X-rays, gamma rays, etc. The photon beam generated by the photon flash therapy device 100 of the present application can achieve high-dose rate radiation delivery, thereby completing the desired radiotherapy in a very short time. In addition, when the patient's tumor is irradiated with a photon beam, the use requirements of deep treatment can be achieved.

[0046] like Figure 1As shown, the photon flash therapy device 100 provided in one embodiment of the present application includes an electron beam generator 10, an electron cyclotron accelerator 20, a guide assembly 30, a deflection magnet 40 and a target assembly 51. The electron beam generator 10 can be used to generate an electron beam. The electron cyclotron accelerator 20 can be used to receive an electron beam from the electron beam generator 10, and is used to perform cyclotron acceleration on the electron beam and extract the accelerated electron beam. The guide assembly 30 can be arranged on the path of travel of the accelerated electron beam, and can perform a first deflection process on the accelerated electron beam. The deflection magnet 40 can perform a second deflection process on the electron beam after the first deflection process. The target assembly 51 can be used to receive the electron beam after the first deflection process by the guide assembly 30, or the electron beam after the second deflection process by the deflection magnet 40, and can convert the electron beam into a photon beam. The photon beam can be emitted toward the target position.

[0047] It can be understood that the electron beam can be accelerated by various methods such as cyclotron acceleration and roundabout acceleration, so that the volume required by the electron cyclotron accelerator to accelerate the photon beam to a photon beam that meets the requirements of flash therapy can be reduced, and the electron beam acceleration efficiency can be improved, thereby reducing the volume of the photon flash therapy device 100 and reducing costs. For example, in the case of accelerating the electron beam by cyclotron acceleration, the electron cyclotron 20 can perform continuous acceleration processing on the electron beam during operation, thereby reducing the floor space and improving the acceleration efficiency. Additionally or alternatively, the photon flash therapy device 100 can achieve the purpose of controlling the target position where the final photon beam is converged or delivered by controlling the intensity of the electric field and / or magnetic field generated by the guide assembly 30 when it is working, thereby improving the efficiency and flexibility of adjusting the target position formed after the photon beam is converged when the photon flash therapy device 100 is working. For example, in the case where the guide assembly 30 is an electromagnet, the intensity of the magnetic field generated by the guide assembly 30 when it is working can be controlled by controlling the magnitude of the current passing to the guide assembly 30. In the case where the guide assembly 30 is a permanent magnet, the intensity of the guide assembly 30 when it is working can be controlled by the temperature of the guide assembly 30 or the external magnetic field. The applicant would like to explain that the electron cyclotron accelerator 20 mentioned above performs cyclotron acceleration on the electron beam, which means that the electron beam can sequentially pass through the acceleration cavity 21 of the electron cyclotron accelerator 20 before being drawn out from the electron cyclotron accelerator 20. As a non-limiting example, the electron beam can sequentially be accelerated from the same position of the acceleration cavity 21, or can sequentially be accelerated from different positions of the acceleration cavity 21 in a circuitous manner, etc.

[0048] It should be noted that the target position refers to the position where irradiation or delivery is desired. As a non-limiting example, the target position may be the isocenter position, a specific volume around the isocenter, or several discrete point positions. As a specific example, the target position may include a region of interest (ROI), for example, the location of a tumor or other lesion in the patient's body where the photon flash therapy device 100 acts when it is working, that is, the photon flash therapy device 100 can accurately irradiate the tumor or lesion when it is working, and achieve the purpose of flash therapy. In addition, the target position may also be the position of various other living or non-living objects. As an example, the target position may be a position on an irradiated experimental object (for example, a dose verification phantom, a small animal for experiment, a dose tester), etc.

[0049] In some embodiments, the electron beam generator 10 is specifically configured as an electron gun, and when the electron gun is in operation, it can emit an electron beam toward the electron cyclotron 20. It can be understood that the electron beam generator 10 is not limited to an electron gun, and those skilled in the art can configure the electron beam generator 10 to be other devices capable of generating electron beams, such as an electron transmitter, an electron diode, etc.

[0050] like Figure 1 , Figure 2 As shown, the electron cyclotron 20 of the present application includes an accelerating cavity 21 and two sets of vector magnets 22. The accelerating cavity 21 can accelerate the electron beam located in the accelerating cavity 21; the two sets of vector magnets 22 can be symmetrically arranged on both sides of the accelerating cavity 21 to guide the electron beam emitted from the accelerating cavity 21 to be re-injected into the accelerating cavity 21. As a non-limiting example, when the electron cyclotron 20 is working, the electron beam can continuously pass through the accelerating cavity 21 when circulating in the electron cyclotron 20, and the electron beam is accelerated by the accelerating cavity 21, so that the circle formed by each circulation path of the electron beam gradually becomes larger, and at the same time, the energy of the electron beam is continuously strengthened. It should be noted that the above-mentioned vector magnet 22 can deflect the electron beam passing through when working to drive the electron beam to turn. It should be noted that the electron beam formed when the electron cyclotron 20 is working has a high beam current intensity, so that the electron beam can meet the radiation dose rate requirements of flash therapy.

[0051] As a non-limiting example, the accelerating cavity 21 is configured as a waveguide type resonant cavity or a coaxial line type resonant cavity, so that each time the electron beam passes through the waveguide type resonant cavity or the coaxial line type resonant cavity, it obtains a certain energy gain and achieves the purpose of accelerating the electron beam.

[0052] The electron cyclotron 20 further includes an extraction component 23, which is disposed on the circulation path of the electron beam in the electron cyclotron 20 and is used to extract the electron beam formed after being accelerated by the acceleration chamber 21. For example, the extraction component 23 may be an electrically conductive plate (a flat plate, an arc-shaped plate or an arched plate) opposite to each other, an electromagnet, a permanent magnet or a combination thereof. As a non-limiting example, when the electron beam in the electron cyclotron 20 travels to the extraction component 23, the extraction component 23 may deflect the electron beam away from the previous travel path through an electric field and / or a magnetic field, so that the electron beam is extracted from the electron cyclotron 20.

[0053] In some embodiments, the extraction component 23 can be adjusted relative to the electron cyclotron 20. For example, different positions of the extraction component 23 in the electron cyclotron 20 correspond to different circulation paths of the electron beam in the electron cyclotron 20. Thus, by adjusting the position of the extraction component 23 on the electron cyclotron 20, different energy selections of the electron beam derived from the extraction component 23 of the electron cyclotron 20 can be achieved, which can facilitate the selection and control of electron beams of different energies when the electron cyclotron 20 is working, and meet different usage requirements of the photon flash therapy device 100 when working.

[0054] As a specific example, an installation channel (not shown) is opened on the electron cyclotron 20, and the lead-out component 23 is specifically arranged in the installation channel. The position of the lead-out component 23 in the installation channel can be controlled by a telescopic cylinder or a telescopic motor. In this way, the control of adjusting the lead-out component 23 to different positions in the installation channel is realized, that is, the automatic control of the position of the lead-out component 23 in the electron cyclotron 20 is realized.

[0055] In some embodiments, the electron cyclotron 20 includes a betatron, a petal-type accelerator, or a racetrack-type accelerator.

[0056] As can be seen from the above, the guide assembly 30 can perform a first deflection process on the accelerated electron beam. As a non-limiting example, the guide assembly 30 can generate a magnetic field and / or use a magnetic field and / or an electric field to perform a first deflection process on the accelerated electron beam when it is working. Therefore, when the photon flash therapy device 100 is working, the angle of the electron beam injected into the deflection magnet 40 through the guide assembly 30 can be adjusted by adjusting the magnetic field strength and / or electric field strength generated by the guide assembly 30. In this way, it is convenient to adjust the target position when the photon flash therapy device 100 is working, and meet the use requirements of irradiating an area of ​​interest such as a tumor.

[0057] In some embodiments, in the plane direction of the deflection magnet 40, the guide assembly 30 is spaced apart from the deflection magnet 40 by a distance. The plane direction of the deflection magnet 40 is, for example, located on a plane formed by the length direction and the width direction of the deflection magnet 40 or in any direction parallel to the plane, but is not limited thereto, and may also be located on any plane where the deflection magnet 40 is located or in a direction parallel to any plane. For example, when viewed from the direction of the main view perpendicular to the deflection magnet 40, there is a certain distance between the guide assembly 30 and the deflection magnet 40. For example, there is a certain angle between the guide assembly 30 and the plane where the deflection magnet 40 is located, such as 0 degrees, 10 degrees, 20 degrees, 30 degrees, 45 degrees, and the like. Thus, the guide assembly 30 can be arranged on one side of the deflection magnet 40, so that other components or equipment can be flexibly arranged, and space can be saved, for example, in the thickness direction.

[0058] In some embodiments, for example, the deflection magnet 40 may be arranged on a plane, and the electron beam after the first deflection process at least partially passes through the first plane and travels to the deflection magnet 40. As a non-limiting example, see Figure 1 , the deflection magnets 40 may be arranged in a first plane (eg, Figure 1 The electron beam after the first deflection process travels to the deflection magnet 40 on the first plane. In this way, some specific space requirements can be met. For example, Figure 1 As shown, the extension direction of the hospital bed 70 may be perpendicular to the paper surface and perpendicular to the first plane.

[0059] According to the above embodiment, the thickness of the photon flash therapy device 100 in the extension direction of the hospital bed 70 can be set relatively small, which can facilitate the transfer of the hospital bed when the space in the room is limited in this direction. In addition, by setting it in this way, space is saved, so that other equipment (for example, other types of treatment equipment, or imaging equipment, such as KV-level orthogonal photon beams, CT, MR, etc.) can be additionally arranged in the extension direction of the hospital bed 70, thereby facilitating the patient to undergo treatment with other equipment before, during or after the flash therapy.

[0060] It can be understood that when the photon flash therapy device 100 is working, the electric field strength and / or magnetic field strength of the guide component 30 when it is powered on can be adjusted by adjusting the current when the guide component 30 is powered on. This facilitates the adjustment of the target position of the convergence of the photon beam generated when the photon flash therapy device 100 is working.

[0061] In some embodiments, the guide assembly 30 includes a vector magnet and / or a deflection resonant cavity. When a guide assembly 30 is configured as a vector magnet, the vector magnet can be configured as a group of orthogonal vector magnets with adjustable deflection directions.

[0062] In addition, in order to achieve the purpose of adjusting the target position (for example, the isocenter position) of the high-energy photon beam generated when the photon flash therapy device 100 is working, in addition to the above-mentioned structure in which the guide component 30 is set to have an adjustable magnetic field or electric field when powered on, another guide component (not shown) can be set on the path where the deflection magnet 40 is ejected, and the guide component can also generate a magnetic field and / or an electric field, and the magnetic field strength and / or electric field strength generated when the guide component is powered on can be adjusted to achieve the adjustment of the final target position of the photon beam. It should be noted that when two guide components are used to adjust the target position of the photon beam, the magnetic field strength generated when the guide component 30 is powered on is set to be non-adjustable. Optionally, the guide component set on the ejection path of the deflection magnet 40 can also be specifically set to a vector magnet or a deflection resonant cavity.

[0063] like Figure 1 , Figure 2 As shown, in some embodiments, the deflection magnets 40 are arranged to be distributed around a ring shape and can be used to focus the electron beam onto the target assembly 51 .

[0064] As a non-limiting example, the deflection magnet 40 includes a room temperature magnet and / or a superconducting magnet, so that when the deflection magnet 40 is working, the magnetic field strength is specifically used to implement the second deflection processing of the electron beam, so that the deflected electron beam can be converged to the target assembly 51. It should be noted that when the deflection magnet 40 includes a room temperature magnet, the field value of the room temperature magnet is less than 2T. When the deflection magnet 40 includes a superconducting magnet, the field value of the superconducting magnet is higher than that of the room temperature magnet, and in order to meet the use requirements of the deflection magnet 40, it is usually necessary to equip the deflection magnet 40 with a low temperature cooling system. Since it is not the focus of the protection requested in this application, it will not be elaborated here.

[0065] In some embodiments, the photon flash therapy device 100 may include a radiation delivery device 50, and the radiation delivery device 50 may include a target assembly 51 and a multi-leaf grating 52. The target assembly 51 can cause the electron beam after the second deflection by the deflection magnet 40 to bremsstrahlung and form a photon beam. The multi-leaf grating 52 can be used to receive the photon beam from the target assembly 51, and can conform the photon beam to match the shape of the region of interest in the target position. It should be noted that the above-mentioned target assembly 51 and the multi-leaf grating 52 can be set to a circular ring structure, or the number of the target assembly 51 and the multi-leaf grating 52 can be set to multiple, and arranged at intervals in the circumferential direction of the target position.

[0066] As can be seen from the above, the radiation delivery device applied to the photon flash therapy device 100 of the present application can change the emission direction of the photon beam. To this end, the number of radiation delivery devices 50 can be set to one, and the radiation delivery device 50 can be moved around the target position. In this way, the movement of the radiation delivery device 50 can be used to achieve the purpose of changing the emission direction of the photon beam when the photon flash therapy device 100 is working; or, the number of radiation delivery devices 50 can be set to multiple, and multiple radiation delivery devices 50 are arranged at intervals around the target position, wherein each radiation delivery device 50 is fixed relative to the target position. In this way, by controlling different radiation delivery devices 50 to work and generate photon beams, the purpose of changing the emission direction of the photon beam when the photon flash therapy device 100 is working is achieved.

[0067] like Figure 2 As shown, in some embodiments, the number of deflection magnets 40 is set to two sets, and the two sets of deflection magnets 40 are symmetrically arranged on both sides of the target position; and the photon flash therapy device 100 also includes a beam splitter 60, which is used to distribute the electron beam to the two sets of deflection magnets 40, so that the photon beam generated by the radiation delivery device 50 can cover the target position 360°. In this way, when the photon flash therapy device 100 is working, the photon beam fully covers the target position, and improves the flash therapy effect of the patient. It should be noted that the specific structure of the beam splitter 60 and the working principle of how to distribute the electron beam to the two sets of deflection magnets 40 during operation can be conventionally used, which will not be elaborated here.

[0068] It should be noted that the electron beam distributed via the beam splitter 60 is not limited to being injected into the corresponding two sets of deflection magnets 40. For those skilled in the art, the number of guide assemblies 30 can be two, and the two guide assemblies 30 respectively receive the electron beam distributed via the beam splitter 60, and can perform a first deflection process on the injected electron beam through a magnetic field and / or an electric field. The electron beam after the first deflection process can be directly injected into the target assembly 51. Alternatively, the electron beam after the first deflection process can be injected into the deflection magnet 40, and then undergo a second deflection process via the deflection magnet 40, and then injected into the target assembly 51. In this way, the photon beam formed via the target assembly 51 can achieve 360° full coverage of the target position.

[0069] It can be understood that the number of radiation delivery devices 50 can be set to two sets, and the two sets of radiation delivery devices 50 are arranged in a one-to-one correspondence with the two sets of deflection magnets 40; of course, the number of radiation delivery devices 50 can also be set to one set, and the electron beams after the second deflection of the two sets of deflection magnets 40 can be received by moving the radiation delivery devices 50.

[0070] Back to Figure 1The photon flash therapy device 100 of the present application may also include a bed 70. The bed 70 is arranged through the radiation delivery device 50. The target position formed by the convergence of the photon beam generated by the radiation delivery device 50 when it is working is set in the area where the bed 70 is located. In this way, when the photon flash therapy device 100 is working, the patient can lie flat on the bed 70 for photon beam irradiation.

[0071] In addition, the electron transport path in the photon flash therapy device 100 is specifically arranged in a closed space, and a vacuum pump 80 is used to maintain the vacuum required on the above-mentioned electron transmission path.

[0072] As an example, Figure 1 FIG. 4 shows a deflection magnet 40 configured to surround the bed 70 by nearly 360°. Figure 1 In the lateral direction of the bed 70 (i.e., the width direction of the bed 70), the deflection magnet 40 leaves a gap to allow a portion of the electron beam that has been first deflected by the guide assembly 30 to not undergo the second deflection process. The electron beam that has undergone the first deflection process or the second deflection process can be injected into the target assembly 51, and a photon beam is generated by the target assembly 51. However, the present invention is not limited thereto, and the deflection magnet 40 can also be set to completely surround the bed 70 by 360°, or surround the bed 70 by less than 360°, or leave gaps at one or more other positions in the circumferential direction, etc.

[0073] The present application also provides a photon beam forming method, comprising: performing cyclotron acceleration on an electron beam by an electron cyclotron accelerator 20; performing a first deflection process on the accelerated electron beam by a guide assembly 30 and guiding it to a deflection magnet 40; performing a second deflection process on the electron beam after the first deflection process by a deflection magnet 40; and forming a photon beam by a target assembly 51 using the electron beam. The formed photon beam can be guided to any position. For example, it can be guided to be emitted toward a target position that needs treatment or radiation, or it can be guided to other photon beam processing equipment for further processing, etc. As a non-limiting example, the photon beam can be emitted toward a target position, so that the photon beam can reach this target position, thereby performing radiotherapy, inspection or testing on the object or target.

[0074] In addition, the present application also provides a computer-readable storage medium, on which instructions are stored, and when the instructions are executed by a processor, the following steps are implemented: performing cyclotron acceleration on an electron beam by an electron cyclotron accelerator 20; performing a first deflection process on the accelerated electron beam by a guide assembly 30 and guiding it to a deflection magnet 40, wherein the deflection magnet 40 is arranged on a first plane, and the electron beam after the first deflection process travels to the deflection magnet 40 on the first plane; performing a second deflection process on the electron beam after the first deflection process by the deflection magnet 40; and, using the electron beam, forming a photon beam through a target assembly 51. The photon beam can be directed to a target position.

[0075] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0076] In summary, the photon flash therapy device 100 of the present invention, through its overall system design and electron path design, enables the electron cyclotron 20, the guide assembly 30, the deflection magnet 40, the target assembly 51 and other parts to cooperate with each other, while realizing the use of photon beams for flash therapy, greatly reducing the volume of the photon flash therapy device 100 and reducing the manufacturing cost, and can also achieve flexible adjustment of the target position and convenience of control, thus facilitating doctors to perform flash therapy on patients.

[0077] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection claimed by the present invention.

Claims

1. A photon flash therapy device, characterized in that: include: An electron beam generator (10) for generating an electron beam; An electron cyclotron accelerator (20) for cyclotron-accelerating the electron beam and extracting the accelerated electron beam; A guide component (30) is arranged on a travel path of the accelerated electron beam, and the guide component (30) is capable of performing a first deflection process on the accelerated electron beam; A deflection magnet (40) capable of performing a second deflection process on the electron beam after the first deflection process; as well as The target assembly (51) is used for forming a photon beam by receiving the electron beam after the first deflection process or the second deflection process.

2. The photon flash therapy device according to claim 1, characterized in that: In the plane direction of the deflection magnet (40), the guide assembly (30) is spaced apart from the deflection magnet (40) by a distance.

3. The photon flash therapy device according to claim 1, characterized in that: The deflection magnets (40) are arranged to be distributed around a ring.

4. The photon flash therapy device according to claim 1, characterized in that: Further including: A radiation delivery device (50) includes one or both of the target assembly (51) and the multileaf collimator (52).

5. The photon flash therapy device according to claim 4, characterized in that: The number of the radiation delivery device (50) is one, and the radiation delivery device (50) is movable around the target location; or There are a plurality of radiation delivery devices (50), and the plurality of radiation delivery devices (50) are arranged at intervals around a target position, wherein each radiation delivery device (50) is fixedly disposed relative to the target position.

6. The photon flash therapy device according to claim 1, characterized in that: The invention comprises two groups of deflection magnets (40), and the two groups of deflection magnets (40) are symmetrically arranged on both sides of the target position.

7. The photon flash therapy device according to claim 6, characterized in that: The photon flash therapy device (100) further comprises a beam splitter (60), wherein the beam splitter (60) is used to guide the electron beam to the two guide assemblies (30) via different paths, and the two guide assemblies (30) respectively correspond to the two groups of deflection magnets (40).

8. The photon flash therapy device according to claim 7, characterized in that: The electron cyclotron accelerator (20) comprises an accelerating cavity (21) and two groups of vector magnets (22), wherein the two groups of vector magnets (22) are symmetrically arranged on both sides of the accelerating cavity (21).

9. A method for forming a photon beam, characterized in that: include: Cyclotron acceleration of the electron beam by an electron cyclotron accelerator (20); Using a guide assembly (30) to perform a first deflection process on the accelerated electron beam and guide it to a deflection magnet (40); Using the deflection magnet (40) to perform a second deflection process on the electron beam after the first deflection process; as well as A photon beam is formed by using an electron beam through a target assembly (51).

10. A computer-readable storage medium having instructions stored thereon, characterized in that: The instructions implement the photon beam forming method according to claim 9 when executed by a processor.

Images