Radiotherapy system

Abstract

The utility model provides a radiotherapy system, relates to the technical field of medical treatment, and is used for solving the problem that precise radiotherapy requirements cannot be met and effectively supporting precise radiotherapy. The radiotherapy system comprises a TPS device, a control device and a radiotherapy device. The control device is connected with the TPS device and the radiotherapy device. The radiotherapy equipment comprises a low-energy accelerator and an ultra-low-energy accelerator and is used for emitting a beam to the target region of the target object, and the energy of the beam emitted by the low-energy accelerator is higher than that of the beam emitted by the ultra-low-energy accelerator; the TPS equipment is used for generating a treatment plan; and the control equipment is used for controlling the low-energy accelerator and / or the ultra-low-energy accelerator to emit beams to the target region of the target object based on the treatment plan.

Description

Technical Field

[0001] This application relates to the field of medical technology, and in particular to a radiotherapy system. Background Technology

[0002] Currently, ring accelerators are rapidly developing in the field of radiotherapy, especially low-energy accelerators. For example, the single-photon 6MV low-energy accelerator uses a single 6MV accelerator to perform radiotherapy on all types of diseases.

[0003] However, radiotherapy is shifting from conventional radiotherapy to precision radiotherapy. Precision radiotherapy requires providing optimal, personalized treatment plans for each patient to achieve refined treatment and thus improve treatment effectiveness. Therefore, current accelerator implementation methods are no longer sufficient to meet the needs of precision radiotherapy and cannot support its implementation. Utility Model Content

[0004] This application provides a treatment plan generation method, a radiotherapy control method, a system, and an apparatus that can improve the problem of not being able to meet the needs of precision radiotherapy and effectively support the realization of precision radiotherapy.

[0005] In one aspect, this application provides a treatment plan generation method applied to a radiotherapy system. The radiotherapy system includes a low-energy accelerator and an ultra-low-energy accelerator. It is used to emit a beam towards the target area of ​​a target object. The energy of the beam emitted by the low-energy accelerator is higher than the energy of the beam emitted by the ultra-low-energy accelerator.

[0006] The treatment plan generation method includes: acquiring a volumetric image of the target object; determining target area information of the target object based on the volumetric image, the target area information including the location and depth of the target area; the location and depth of the target area indicating the distance of the target area relative to the body surface of the target object; acquiring prescription dose information of the target area, wherein the prescription dose information includes the radiation dose of the target area in different regions; and generating a treatment plan based on the target area information and the prescription dose information of the target area, so that a control device controls a low-energy accelerator and / or an ultra-low-energy accelerator to emit a beam towards the target area of ​​the target object based on the treatment plan.

[0007] In some embodiments, a method for generating a treatment plan based on target area information and prescription dose information of the target area, so that a control device controls a low-energy accelerator and / or an ultra-low-energy accelerator to emit a beam towards the target area of ​​a target object, specifically includes: when the location depth of the target area is less than or equal to a preset depth threshold, generating a treatment plan based on the target area information and prescription dose information of the target area, so that the control device controls an ultra-low-energy accelerator to emit a beam towards the target area of ​​the target object based on the treatment plan. Alternatively, when the location depth of the target area is greater than a preset depth threshold, generating a treatment plan based on the target area information and prescription dose information of the target area, so that the control device controls a low-energy accelerator to emit a beam towards the target area of ​​the target object based on the treatment plan, or controlling both the low-energy accelerator and the ultra-low-energy accelerator to simultaneously emit beams towards the target area of ​​the target object.

[0008] Secondly, this application provides a radiotherapy control method applied to a radiotherapy system. The radiotherapy system includes a low-energy accelerator and an ultra-low-energy accelerator. These are used to emit a beam towards the target area of ​​a target object. The energy of the beam emitted by the low-energy accelerator is higher than the energy of the beam emitted by the ultra-low-energy accelerator.

[0009] Radiation therapy control methods include: acquiring a treatment plan, which includes target area information of the target subject, including the location and depth of the target area. The location and depth of the target area are used to indicate the distance of the target area relative to the body surface of the target subject. Based on the location and depth of the target area, a low-energy accelerator and / or an ultra-low-energy accelerator are controlled to emit a beam towards the target area of ​​the target subject.

[0010] In some embodiments, a method for controlling a low-energy accelerator and / or an ultra-low-energy accelerator to emit beams at a target area based on the target area's location and depth specifically includes: controlling the ultra-low-energy accelerator to emit beams at the target area when the target area's location and depth are less than or equal to a preset depth threshold; or controlling the low-energy accelerator, or controlling both the low-energy accelerator and the ultra-low-energy accelerator to simultaneously emit beams at the target area when the target area's location and depth are greater than the preset depth threshold.

[0011] Thirdly, this application provides a radiotherapy system, comprising: a TPS device for performing any of the possible treatment plan generation methods as described in the first aspect; a control device for performing any of the possible radiotherapy control methods as described in the second aspect; and a radiotherapy device including a low-energy accelerator and an ultra-low-energy accelerator. The device is used to emit a beam to a target area of ​​a target object. The energy of the beam emitted by the low-energy accelerator is higher than the energy of the beam emitted by the ultra-low-energy accelerator.

[0012] In some embodiments, the energy of the ultra-low energy accelerator is adjustable, ranging from 300 kilovolts (kV) to 1250 kV. The energy of the low-energy accelerator is, for example, 6 megavolts (MV).

[0013] In some embodiments, the radiotherapy device may further include a rotatable ring gantry. A low-energy accelerator and an ultra-low-energy accelerator are mounted on the rotatable ring gantry. The isocenters of the low-energy accelerator and the ultra-low-energy accelerator are located on the same horizontal plane and focused on the same point.

[0014] In some embodiments, the radiotherapy device may further include a single-layer grating assembly. The single-layer grating assembly is disposed on the beam exit side of the ultra-low energy accelerator and is used to adjust the shape of the field of the beam emitted by the ultra-low energy accelerator.

[0015] In some embodiments, the radiotherapy device may further include a flat panel detector. The flat panel detector is disposed on a rotatable ring gantry and is disposed opposite to the ultra-low energy accelerator. It is used to receive the beam emitted by the ultra-low energy accelerator that passes through the target area of ​​the target object, and to generate image information of the target area of ​​the target object. The image information of the target area of ​​the target object is used to reflect the positional changes of the target area of ​​the target object.

[0016] In some embodiments, the radiotherapy device may further include one or more radiation therapy heads. The irradiation isocenters of the low-energy accelerator, the ultra-low-energy accelerator, and the one or more radiation therapy heads are located on the same horizontal plane and focused on the same point. The control device is also used to control one or more radiation therapy heads to simultaneously emit beams onto the target area of ​​the target object based on the treatment plan.

[0017] Fourthly, this application provides an electronic device comprising: a processor; and a memory configured to store processor-executable instructions. The processor is configured to execute instructions to implement any possible treatment plan generation method as described in the first aspect, or any possible radiotherapy control method as described in the second aspect.

[0018] Fifthly, this application provides a non-volatile storage medium storing a computer program, which, when read and executed, implements any possible treatment plan generation method as described in the first aspect, or any possible radiotherapy control method as described in the second aspect.

[0019] In a sixth aspect, this application provides a computer program product comprising computer instructions that, when executed on an electronic device, cause the electronic device to perform any of the possible treatment plan generation methods in the first aspect, or any of the possible radiotherapy control methods in the second aspect.

[0020] These or other aspects of this application will become more readily apparent in the following description.

[0021] The technical solution provided in this application brings at least the following beneficial effects:

[0022] In this application, considering that rays of different energies possess different properties and are suitable for different radiotherapy depths, the radiotherapy system includes a low-energy accelerator and an ultra-low-energy accelerator, with the energy of the beam emitted by the low-energy accelerator being higher than that emitted by the ultra-low-energy accelerator. This application allows for the design of corresponding treatment plans based on the location and depth of the target area. The control equipment can control the low-energy accelerator and / or ultra-low-energy accelerator to irradiate the target area based on the treatment plan, thereby improving the application flexibility of the radiotherapy system and broadening the range of treatable diseases.

[0023] In the radiotherapy system of this application, after acquiring a volumetric image of the target object, the TPS device can determine the target area information based on the volumetric image. The target area information includes the depth of the target area. The depth of the target area indicates the distance between the target area and the surface of the target object. Furthermore, the TPS device can generate a treatment plan based on the target area information and the prescribed dose information for the target area, enabling the control device to control the low-energy accelerator and / or ultra-low-energy accelerator to emit a beam to the target area of ​​the target object based on the treatment plan. Thus, the embodiments of this application can support radiotherapy using energy-matched accelerators based on the depth of the target area, accommodating both superficial and deep tumors, providing more refined treatment methods for different types of diseases, effectively meeting the needs of precision radiotherapy, and supporting the realization of precision radiotherapy.

[0024] Furthermore, compared to related technologies that use a single-energy accelerator for irradiation regardless of target depth, this application utilizes an ultra-low-energy accelerator to accumulate energy for superficial tumors. This effectively meets the target dose requirements while reducing radiation to normal tissues, and also minimizes toxic side effects for pediatric patients. It overcomes the shortcomings of using only a conventional 6MV accelerator and effectively supports precise radiotherapy. The ultra-low-energy accelerator in this application is mounted on a rotatable ring gantry, enabling total body irradiation (TBI) for superficial tumors, achieving high-quality treatment of these tumors.

[0025] Furthermore, the ultra-low energy accelerator of this application can be used for image-guided and assisted treatment in addition to its therapeutic applications. This allows for real-time monitoring of the target area during treatment without inflicting additional doses on the patient, achieving true real-time image guidance. Moreover, the energy of the ultra-low energy accelerator is adjustable, enabling the acquisition of more accurate and clear images for different patients. Furthermore, compared to using X-ray tubes for image acquisition, the ultra-low energy accelerator has a longer lifespan, reducing maintenance pressure and costs at the actual deployment site. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0027] Figure 1 A schematic diagram illustrating the relationship between radiation dose and radiation depth is provided for an embodiment of this application;

[0028] Figure 2 A flowchart illustrating a treatment plan generation method provided in this application embodiment;

[0029] Figure 3 A schematic flowchart of a radiotherapy control method provided in an embodiment of this application;

[0030] Figure 4 This is a schematic diagram of the structure of a radiotherapy system provided in an embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the structure of a treatment plan generation device provided in an embodiment of this application;

[0032] Figure 6 This is a schematic diagram of the structure of a radiotherapy control device provided in an embodiment of this application;

[0033] Figure 7 This is a schematic diagram of the structure of a radiotherapy device provided in an embodiment of this application;

[0034] Figure 8 This is a schematic diagram of the structure of another radiotherapy device provided in the embodiments of this application;

[0035] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0036] Figure 10 This is a schematic diagram of the structure of another electronic device provided in an embodiment of this application. Detailed Implementation

[0037] The treatment plan generation method, radiotherapy control method, system, and equipment provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0038] Furthermore, the terms “comprising” and “having”, and any variations thereof, used in the description of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include other steps or units not listed, or may optionally include other steps or units inherent to such processes, methods, products, or apparatus.

[0039] It should be noted that in the embodiments of this application, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplarily" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the words "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0040] The term "and / or" as used in this application includes using either one of two methods or using both methods simultaneously.

[0041] The terms “first,” “second,” and “third,” etc., used in the specification and drawings of this application are used to distinguish different objects, not to describe a specific order of objects, nor to indicate or imply relative importance or to implicitly specify the number of technical features indicated.

[0042] In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0043] The following explains some concepts involved in the treatment plan generation method, radiotherapy control method, system, and device provided in the embodiments of this application.

[0044] Currently, ring accelerators are rapidly developing in the field of radiotherapy, especially low-energy accelerators. For example, the single-photon 6MV low-energy accelerator uses a single 6MV accelerator to perform radiotherapy on all types of diseases.

[0045] However, radiotherapy is shifting from conventional radiotherapy to precision radiotherapy. Precision radiotherapy requires providing optimal, personalized treatment plans for each patient to achieve refined treatment and thus improve treatment effectiveness. Therefore, the current approach of using a single accelerator to provide radiotherapy for all diseases can no longer meet the needs of precision radiotherapy, making it difficult to support its implementation. It is also easily limited by the treatment equipment available, and its treatment efficacy is poor for skin lesions, breast diseases, and pediatric patients.

[0046] Furthermore, commonly used radiotherapy equipment often fails to meet the demands of precise radiotherapy. For example, Gamma Knife. Gamma Knife has a spherical focal point and typically uses a filling method to achieve coverage of the target area. However, when using Gamma Knife to spherically fill irregular target areas, it is less efficient, prone to cold and hot spots in dose distribution, and suffers from poor conformal accuracy, easily affected by uneven dose distribution within the target area.

[0047] In this case, considering that rays of different energies possess different properties, they are suitable for different depths of radiotherapy. For example, such as... Figure 1 This is a schematic diagram showing the relationship between radiation dose and radiation depth. Figure 1 The diagram illustrates the relationship between the percentage depth dose (%) of different energies of radiation—electron beams, high-energy X-rays, gamma rays, neutron beams, kilovolt-level X-rays, and heavy particle beams—and the radiation depth (cm) within a water phantom. High-energy X-rays can be megavolt-level. It is evident that different energies of radiation possess different properties, adapting to different radiotherapy depths. Ultra-low-energy radiation can achieve better energy accumulation at smaller radiation depths (e.g., shallow target areas), while low-energy radiation can achieve better energy accumulation at larger radiation depths (e.g., deep target areas).

[0048] In the treatment plan generation method of the first aspect of this application:

[0049] In order to effectively meet the needs of precise radiotherapy for target areas at different depths, broaden the range of treatable diseases, and support the realization of precision radiotherapy, this application provides a treatment plan generation method, which is applied to a radiotherapy system.

[0050] This radiotherapy system includes a low-energy accelerator and an ultra-low-energy accelerator. These are used to deliver a beam to the target area of ​​the patient. The energy of the beam emitted by the low-energy accelerator is higher than that of the beam emitted by the ultra-low-energy accelerator.

[0051] The treatment plan generation method includes: acquiring a volumetric image of the target object; determining target area information of the target object based on the volumetric image, the target area information including the location and depth of the target area; the location and depth of the target area indicating the distance of the target area relative to the body surface of the target object; acquiring prescription dose information of the target area, wherein the prescription dose information includes the radiation dose of the target area in different regions; and generating a treatment plan based on the target area information and the prescription dose information of the target area, so that a control device controls a low-energy accelerator and / or an ultra-low-energy accelerator to emit a beam towards the target area of ​​the target object based on the treatment plan.

[0052] This application can design corresponding treatment plans based on the location and depth of the target area of ​​the object. The control equipment can control the low-energy accelerator and / or ultra-low-energy accelerator to irradiate the target area based on the treatment plan. By using an energy-matched accelerator for radiotherapy, it can treat both superficial and deep tumors, broaden the range of treatable diseases, and improve the application flexibility of the radiotherapy system.

[0053] like Figure 2 The diagram shown is a flowchart illustrating a treatment plan generation method provided in an embodiment of this application. The treatment plan generation method includes steps S101-S104.

[0054] S101. Obtain the volume image of the target object.

[0055] A volumetric image of a target object is an image obtained from an imaging examination of a patient, used to accurately reflect the condition of a tumor or lesion within the target object. The volumetric image of a target object includes the tumor or lesion within the target object. Alternatively, the volumetric image of a target object may also include normal tissue surrounding the tumor or lesion within the target object.

[0056] Optionally, the volumetric image can be a three-dimensional image, such as a magnetic resonance (MR) image, a computed tomography (CT) image, or a positron emission tomography (PET) image.

[0057] S102. Based on the volumetric image, determine the target area information of the target object.

[0058] The target area information includes the target area's location and depth. The target area's location and depth indicate the distance between the target area's location and the surface of the target object.

[0059] Optionally, the target area information may also include information such as the location and / or shape of the target area.

[0060] S103. Obtain prescription dose information for the target area.

[0061] The prescription dose information includes the radiation dose to the target area in different regions. Different target areas can correspond to different radiation doses. The radiation dose is the amount of radiation energy that the target area needs to receive.

[0062] S104. Generate a treatment plan based on the target area information and the prescription dose information of the target area, so that the control device controls the low-energy accelerator and / or ultra-low-energy accelerator to emit beams to the target area of ​​the target object based on the treatment plan.

[0063] In one possible approach, for shallow target areas, the dose distribution of radiation on the skin surface and in superficial tissues needs to be considered to effectively meet the dose requirements of such target areas while avoiding excessive doses that could damage normal tissues. In this case, a treatment plan can be generated based on information about the shallow target area and the prescribed dose information for that area, allowing the control device to activate the ultra-low energy accelerator while disabling the low-energy accelerator based on the treatment plan. Alternatively, the control device can also control the energy level of the ultra-low energy accelerator based on the treatment plan to accurately set its energy.

[0064] In another possible approach, for target areas at greater depths, even adjusting the ultra-low-energy accelerator to its maximum capacity may not effectively meet the target dose requirements. In this case, a treatment plan can be generated based on information about shallower target areas and the prescribed dose information for those areas. This allows the control equipment to activate the low-energy accelerator based on the treatment plan. Alternatively, the control equipment can also activate both the ultra-low-energy accelerator and the low-energy accelerator simultaneously based on the treatment plan to meet the needs of radiotherapy scenarios.

[0065] In one possible approach, the method for generating the treatment plan may further include: determining the irradiation dose and irradiation time of the target area of ​​the target object based on the volumetric image of the target object and the prescription dose information of the target area, and generating a complete treatment plan.

[0066] In some embodiments, when the control device enables the ultra-low energy accelerator to emit a beam towards the target area of ​​the target object based on the treatment plan instruction, the method for generating the treatment plan may further include: determining energy indication information of the ultra-low energy accelerator based on the prescription dose information of the target area, and adding the energy indication information to the treatment plan. The energy indication information is used to indicate the energy of the beam emitted by the ultra-low energy accelerator towards the target area of ​​the target object.

[0067] In some embodiments, the method for generating a treatment plan may further include: determining, based on image information of the target area of ​​the target object during the treatment process and in conjunction with a volumetric image of the target object, that the position of the target area of ​​the target object has changed. Furthermore, if the position of the target area of ​​the target object has changed, the treatment plan can be updated based on the position change information of the target area of ​​the target object.

[0068] In one embodiment, in S104 above, when a treatment plan is generated based on the target area information and the prescription dose information of the target area, so that the control device controls the low-energy accelerator and / or ultra-low-energy accelerator to emit a beam to the target area of ​​the target object based on the treatment plan, this application embodiment provides an optional implementation method, including: S1041-S1042.

[0069] S1041. When the depth of the target area is less than or equal to a preset depth threshold, a treatment plan is generated based on the target area information and the prescription dose information of the target area, so that the control device controls the ultra-low energy accelerator to emit a beam to the target area of ​​the target object based on the treatment plan.

[0070] Considering that ultra-low energy accelerators can effectively accumulate energy in superficial areas, they are more beneficial for treating superficial lesions. If the target area's depth is less than or equal to a preset depth threshold, the irradiation dose and irradiation time of the ultra-low energy accelerator on the target area can be determined based on the prescription dose information of the target area in the treatment plan, thus generating a complete treatment plan.

[0071] Optionally, the preset depth information can be flexibly set based on human experience or based on the therapeutic effect of the ultra-low energy accelerator on target areas at different depths; this application does not impose any restrictions on this.

[0072] S1042. When the depth of the target area is greater than a preset depth threshold, a treatment plan is generated based on the target area information and the prescription dose information of the target area, so that the control device controls the low-energy accelerator to emit a beam to the target area of ​​the target object based on the treatment plan, or controls the low-energy accelerator and the ultra-low-energy accelerator to emit beams to the target area of ​​the target object at the same time.

[0073] Considering that low-energy accelerators can effectively irradiate target areas located deep beneath the body surface, if the target area's depth exceeds a preset depth threshold, the irradiation dose and duration of the low-energy accelerator on the target object can be determined based on the prescribed dose information for the target area, thus generating a complete treatment plan.

[0074] Alternatively, when the radiation dose requirement of the target area is high, the treatment plan generation method may further include: determining the dose allocation of the low-energy accelerator and the ultra-low-energy accelerator based on the target area information and the prescribed dose information of the target area, and generating a complete treatment plan. The control equipment may also simultaneously control the activation of the low-energy accelerator and the ultra-low-energy accelerator to emit beams to the target area of ​​the target based on the above complete treatment plan.

[0075] In the second aspect of this application, the method for controlling radiation therapy:

[0076] The radiotherapy control method of this application is applied to a radiotherapy system.

[0077] Radiotherapy systems include low-energy accelerators and ultra-low-energy accelerators; these are used to deliver beams to the target area of ​​the patient. The energy of the beam emitted by a low-energy accelerator is higher than that of the beam emitted by an ultra-low-energy accelerator.

[0078] The radiotherapy control method includes: acquiring a treatment plan, which includes target area information of the target subject, including the location and depth of the target area. The location and depth of the target area are used to indicate the distance of the target area's location relative to the body surface of the target subject. Based on the location and depth of the target area, a low-energy accelerator and / or an ultra-low-energy accelerator are controlled to emit a beam towards the target area of ​​the target subject.

[0079] like Figure 3 The diagram shown is a flowchart illustrating a radiotherapy control method provided in an embodiment of this application. This radiotherapy control method is applied to a radiotherapy system. The radiotherapy control method includes steps S201-S202.

[0080] S201. Obtain a treatment plan.

[0081] The treatment plan includes target area information for the target subject. This target area information includes the depth of the target area. The depth of the target area indicates the distance of the target area relative to the target subject's body surface.

[0082] It should be understood that the method for generating treatment plans can be referred to in the specific descriptions in S101-S104 above, and will not be repeated here.

[0083] S202. Based on the location and depth of the target area, control the low-energy accelerator and / or ultra-low-energy accelerator to emit beams to the target area of ​​the target object.

[0084] For target areas with shallow depths, the ultra-low energy accelerator can be controlled to emit a beam to the target area according to the treatment plan, so as to effectively meet the dose requirements of such target areas while avoiding the problem of damage to normal tissues due to excessive dose.

[0085] For target areas at greater depths, the low-energy accelerator can be controlled to emit a beam towards the target area according to the treatment plan. Alternatively, the low-energy accelerator and the ultra-low-energy accelerator can be controlled to simultaneously emit beams towards the target area according to the treatment plan, in order to meet the needs of radiotherapy scenarios requiring low-energy beams.

[0086] In one embodiment, in the above S202, that is, when controlling the low-energy accelerator and / or ultra-low-energy accelerator to emit a beam to the target area of ​​the target object based on the position and depth of the target area, the present application embodiment provides an optional implementation method, including: S2021-S2022.

[0087] S2021. When the depth of the target area is less than or equal to a preset depth threshold, control the ultra-low energy accelerator to emit a beam to the target area of ​​the target object.

[0088] If the target area's depth is less than or equal to a preset depth threshold, the treatment plan can also specify the energy and irradiation duration of the beam emitted by the ultra-low energy accelerator towards the target area. Thus, when the target area's depth is less than or equal to the preset depth threshold, the energy of the beam emitted by the ultra-low energy accelerator can be adjusted, and the irradiation duration can be controlled according to the treatment plan, enabling precise treatment of superficial areas.

[0089] S2022. When the depth of the target area is greater than the preset depth threshold, control the low-energy accelerator, or control the low-energy accelerator and the ultra-low-energy accelerator to simultaneously emit beams at the target area of ​​the target object.

[0090] If the target area is deeper than a preset depth threshold, the treatment plan can specify control parameters such as the energy and duration of the beam emitted from the low-energy accelerator to the target area. Thus, when the target area is deeper than the preset depth threshold, the low-energy accelerator can be controlled according to the parameters specified in the treatment plan to emit a beam to the target area, achieving effective treatment of deep target areas.

[0091] Alternatively, the treatment plan can also specify control parameters such as dose distribution information between the low-energy accelerator and the ultra-low-energy accelerator. In this way, when the target area is deeper than a preset depth threshold, the low-energy accelerator and the ultra-low-energy accelerator can be controlled to simultaneously emit beams at the target area of ​​the object according to the control parameters such as dose distribution information specified in the treatment plan, thereby achieving effective treatment of deep target areas.

[0092] In the radiotherapy system of the third aspect of this application:

[0093] In combination with the above Figure 2 The treatment plan generation method shown above, and the above Figure 3 The illustrated radiotherapy control method is followed by an embodiment of a radiotherapy system provided in this application. The radiotherapy system includes: a TPS device for executing the treatment planning generation method as described above, a control device for executing the radiotherapy control method as described above, and a radiotherapy device. The radiotherapy device includes: a low-energy accelerator and an ultra-low-energy accelerator; used to emit a beam to the target area of ​​a target object. The energy of the beam emitted by the low-energy accelerator is higher than the energy of the beam emitted by the ultra-low-energy accelerator.

[0094] In the radiotherapy system of this application, after acquiring a volumetric image of the target object, the TPS device can determine the target area information based on the volumetric image. The target area information includes the depth of the target area. The depth of the target area indicates the distance between the target area and the surface of the target object. Furthermore, the TPS device can generate a treatment plan based on the target area information and the prescribed dose information for the target area, enabling the control device to control the low-energy accelerator and / or ultra-low-energy accelerator to emit a beam to the target area of ​​the target object based on the treatment plan. Thus, the embodiments of this application can support radiotherapy using energy-matched accelerators based on the depth of the target area, accommodating both superficial and deep tumors, providing more refined treatment methods for different types of diseases, effectively meeting the needs of precision radiotherapy, and supporting the realization of precision radiotherapy.

[0095] like Figure 4 The diagram shown is a structural schematic of a radiotherapy system provided in an embodiment of this application. Figure 4 The radiotherapy system 300 shown includes a TPS device 301, a control device 302, and a radiotherapy device 303. The control device 302 can be connected to both the TPS device 301 and the radiotherapy device 303.

[0096] TPS equipment:

[0097] In some embodiments, the TPS device 301 is used to perform the above. Figure 2 The illustrated treatment plan generation method involves acquiring a volumetric image of the target object and determining the target area information based on the volumetric image. A treatment plan is then generated based on the target area information and the prescribed dose information for the target area. Subsequently, the TPS device 301 can send the generated treatment plan to a control device 302, enabling the control device 302 to control a low-energy accelerator and / or an ultra-low-energy accelerator to emit a beam onto the target area of ​​the target object based on the treatment plan. Thus, this embodiment of the application can support the design of corresponding treatment plans based on the location and depth of the target area, using a low-energy accelerator and / or an ultra-low-energy accelerator matched to the target area for irradiation therapy. This provides targeted treatment methods for different types of diseases, improves the application flexibility of the radiotherapy system, broadens the range of treatable diseases, effectively meets the needs of precision radiotherapy, and supports the realization of precision radiotherapy.

[0098] In some embodiments, to facilitate the formulation of treatment plans for the target object, in S102, the TPS device 301 can process the volumetric image of the target object through a treatment planning system to accurately locate the target area's position, structure, boundary, morphology, distribution characteristics, and other information. Furthermore, the TPS device 301 can determine the target area information of the target object. For example, the TPS device 301 can determine the center position of the target area of ​​the target object through centroid calculation or an automatic segmentation algorithm, and further determine the distance between the center position of the target area and the surface of the target object as the depth of the target area.

[0099] In some embodiments, in S103, the TPS device 301 can accurately determine the prescription dose information of the target area through calculation and superposition using a radiotherapy planning system. Alternatively, the prescription dose information of the target area can also be manually set within the TPS device 301. The TPS device 301 can read the manually set prescription dose information of the target area when needed.

[0100] In some embodiments, the TPS device 301 can also determine that the position of the target area of ​​the target object has changed based on the image information of the target area of ​​the target object during the treatment process, combined with the volume image of the target object. Furthermore, if the position of the target area of ​​the target object has changed, the irradiation dose of the accelerator and / or radiation therapy head involved in the irradiation in the treatment plan can be updated based on the position change information of the target area of ​​the target object.

[0101] In some embodiments, the TPS device 301 can be divided into functional modules according to the above-described treatment plan generation method example. For example, each function can be divided into its own functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in this embodiment is illustrative and only represents one logical functional division; other division methods may be used in actual implementation.

[0102] For example, when implementing TPS device 301 in the form of software functional modules, Figure 5 A schematic diagram of a treatment plan generation device is shown. This treatment plan generation device 40 can be applied to the TPS device 301 to implement any of the possible treatment plan generation methods involved in the above embodiments. Figure 5 As shown, the treatment plan generation device 40 may include an acquisition unit 401 and a processing unit 402.

[0103] Acquisition unit 401 is used to acquire a volumetric image of the target object. Processing unit 402 is used to determine target area information of the target object based on the volumetric image, the target area information including the location and depth of the target area. The location and depth of the target area are used to indicate the distance of the target area's location relative to the surface of the target object. Acquisition unit 401 is also used to acquire prescription dose information of the target area, wherein the prescription dose information includes the radiation dose of the target area in different regions. Processing unit 402 is also used to generate a treatment plan based on the target area information and the prescription dose information of the target area, so that the control device controls the low-energy accelerator and / or ultra-low-energy accelerator to emit a beam to the target area of ​​the target object based on the treatment plan.

[0104] In some embodiments, the processing unit 402 is specifically configured to: when the depth of the target area is less than or equal to a preset depth threshold, generate a treatment plan based on the target area information and the prescription dose information of the target area, so that the control device controls the ultra-low energy accelerator to emit a beam towards the target area of ​​the target object based on the treatment plan. Alternatively, when the depth of the target area is greater than the preset depth threshold, generate a treatment plan based on the target area information and the prescription dose information of the target area, so that the control device controls the low energy accelerator to emit a beam towards the target area of ​​the target object based on the treatment plan, or control the low energy accelerator and the ultra-low energy accelerator to simultaneously emit beams towards the target area of ​​the target object.

[0105] Control equipment:

[0106] In some embodiments, the control device 302 is used to perform the above. Figure 3 The radiotherapy control method shown controls the radiotherapy device 303 to execute a treatment plan, namely, controlling a low-energy accelerator and / or an ultra-low-energy accelerator to emit a beam to the target area of ​​the target object based on the treatment plan.

[0107] In some embodiments, after the TPS device 301 generates a treatment plan based on the target area information and the prescription dose information of the target area, it can send the generated treatment plan to the control device 302. Correspondingly, the control device 302 can receive the treatment plan from the TPS device 301. Further, the control device 302 can parse the treatment plan, determine the target area information of the target object, the accelerators to be activated, and the dose distribution information of the accelerators to be activated, etc., and thereby control the low-energy accelerator and / or ultra-low-energy accelerator to emit beams to the target area of ​​the target object based on the parsed information.

[0108] In some embodiments, if it is necessary to enable the ultra-low energy accelerator to emit a beam to the target area of ​​the target object, the control device 302 can also set the energy of the ultra-low energy accelerator according to the energy instruction information in the treatment plan.

[0109] In some embodiments, the control device 302 can be divided into functional modules according to the above-described radiotherapy control method example. For example, each function can be divided into its own functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in this embodiment is illustrative and only represents one logical functional division; other division methods may be used in actual implementation.

[0110] For example, when the control device 302 is implemented in the form of software functional modules, Figure 6 A schematic diagram of a radiotherapy control device is shown. This radiotherapy control device 50 can be applied to the control equipment 302 to implement any of the possible radiotherapy control methods involved in the above embodiments. Figure 6 As shown, the radiotherapy control device 50 may include an acquisition unit 501 and a control unit 502.

[0111] Acquisition unit 501 is used to acquire a treatment plan, which includes target area information of the target object, including the location and depth of the target area. The location and depth of the target area are used to indicate the distance between the location of the target area and the surface of the target object. Control unit 502 is used to control the low-energy accelerator and / or ultra-low-energy accelerator to emit a beam towards the target area of ​​the target object based on the location and depth of the target area.

[0112] In some embodiments, the control unit 502 is specifically configured to: control the ultra-low energy accelerator to emit a beam towards the target area of ​​the target object when the depth of the target area is less than or equal to a preset depth threshold; or control the low energy accelerator, or control the low energy accelerator and the ultra-low energy accelerator to simultaneously emit beams towards the target area of ​​the target object when the depth of the target area is greater than the preset depth threshold.

[0113] Radiotherapy equipment:

[0114] In some embodiments, the radiotherapy device 303 is used to emit a beam to the target area of ​​a target object, specifically including a low-energy accelerator and an ultra-low-energy accelerator. The low-energy accelerator emits a beam with higher energy than the ultra-low-energy accelerator.

[0115] Thus, considering that rays of different energies have different properties and are suitable for different radiotherapy depths, the radiotherapy equipment 303 can support radiotherapy using an energy-matched accelerator based on the location and depth of the target area. It can treat both superficial and deep tumors, providing more refined treatment methods for different types of diseases, effectively meeting the needs of precision radiotherapy, and supporting the realization of precision radiotherapy.

[0116] In some embodiments, the radiotherapy device 303 includes an energy-adjustable ultra-low energy accelerator, which can flexibly adjust the energy of the output beam according to parameters such as the target depth and prescription dose of the target object, and can effectively meet different radiotherapy needs.

[0117] The energy range of ultra-low energy accelerators is 300kV-1250kV. For example, for target areas located on the skin surface, the energy of the ultra-low energy accelerator can be adjusted to 300kV or 400kV to effectively meet the dose requirements of such target areas while reducing radiation to normal subcutaneous tissues. The target depth refers to the distance between the target area and the surface of the target body.

[0118] For example, for subcutaneous target areas close to the skin, the energy of the ultra-low energy accelerator can be adjusted to 1000kV or 1250kV to effectively meet the dose requirements of such target areas while reducing radiation to surrounding normal tissues. Furthermore, in this case, once the energy adjustment of the ultra-low energy accelerator is determined, it need not be changed during the treatment process.

[0119] In some embodiments, the control device 302 can control the energy of the ultra-low energy accelerator corresponding to the radiotherapy device 303 according to the control parameters indicated by the treatment plan.

[0120] Thus, compared to the related technologies that use a single-energy accelerator to irradiate target areas of all depths, the embodiments of this application can use an ultra-low-energy accelerator to accumulate energy in shallow target areas around the surface. This can effectively meet the dose requirements of the target area while reducing radiation to normal tissues, which is more conducive to the treatment of superficial tumors and has fewer toxic side effects on pediatric patients. It can make up for the shortcomings of using only a conventional 6MV accelerator for irradiation and can effectively support the realization of precision radiotherapy.

[0121] Furthermore, the radiotherapy device 303 includes a low-energy accelerator with an energy of 6MV. Based on this, when the target area is too deep and the ultra-low-energy accelerator cannot effectively meet the target dose requirements, the 6MV low-energy accelerator can be used for irradiation to meet the needs of radiotherapy scenarios requiring low-energy beams.

[0122] In some embodiments, the radiotherapy device 303 may further include a rotatable ring gantry. A low-energy accelerator and an ultra-low-energy accelerator are mounted on the rotatable ring gantry. The irradiation isocenters of the low-energy accelerator and the ultra-low-energy accelerator are located on the same horizontal plane and focused on the same point. Thus, the radiotherapy device 303 can effectively improve the accuracy and precision of target area irradiation during radiotherapy, ensuring therapeutic effects during rotational irradiation at various angles.

[0123] Furthermore, the ultra-low energy accelerator is mounted on a rotatable ring gantry, which can support TBI irradiation of superficial tumors, enabling high-quality treatment of superficial tumors.

[0124] In some embodiments, the radiotherapy device 303 may further include a single-layer grating assembly. The single-layer grating assembly may be disposed on the beam-emission side of the ultra-low energy accelerator to adjust the shape of the radiation field of the beam emitted by the ultra-low energy accelerator. In this way, the radiotherapy device 303 can support conformal irradiation of the target area of ​​the target object with a relatively simple structure, effectively supporting the realization of precision radiotherapy.

[0125] For example, the TPS device 301 can determine the irradiation angle of the ultra-low energy accelerator as angle 1 when the rotatable ring gantry is in the initial rotation position, and determine the conformal field 1 based on the shape of the target area at angle 1. Further, the TPS device 301 can determine the irradiation angle of the ultra-low energy accelerator as angle 2 after the rotatable ring gantry has rotated a specific angle, and determine the conformal field 2 based on the shape of the target area at angle 2. And so on, the TPS device 301 can determine the conformal field 1 corresponding to angle 1, the conformal field 2 corresponding to angle 2, ..., the conformal field N corresponding to angle N, and generate a treatment plan. The specific angle of rotation of the rotatable ring gantry each time can be determined according to the shape and complexity of the target area, so that the target area receives an appropriate dose at different angles. Furthermore, during the radiotherapy of the target area of ​​the target object, the control device 302 can control the rotatable ring gantry of the radiotherapy device 303 to rotate continuously based on the treatment plan, and control the single-layer grating assembly to form a light-transmitting area that matches the corresponding conformal field at each irradiation angle, and control the ultra-low energy accelerator to emit a beam to irradiate the target area of ​​the target object in a conformal manner, thereby achieving precise radiotherapy.

[0126] In some embodiments, the radiotherapy device 303 may further include a flat panel detector. The flat panel detector is mounted on a rotatable ring gantry and is positioned opposite the ultra-low energy accelerator. Based on this, the flat panel detector can receive the beam emitted by the ultra-low energy accelerator that passes through the target area of ​​the target object and generate image information of the target area. This image information of the target area can be used to reflect changes in the position of the target area.

[0127] Thus, during the irradiation treatment of the target area, the device can receive the beam emitted by the ultra-low energy accelerator through the target area via a flat panel detector, and generate image information of the target area. Furthermore, based on the image information of the target area, the control device 302 can control the single-layer grating assembly in the radiotherapy device 303 to achieve conformal irradiation of the target area according to the bird-eye view (BEV) field shape.

[0128] Furthermore, the radiotherapy device 303 can also generate image information of the target area of ​​the object through a flat panel detector opposite the ultra-low energy accelerator. In this way, the TPS device 301 can compare the image information of the target area with the treatment plan to achieve precise monitoring of the radiotherapy process. Moreover, if there is a significant deviation between the identified target area location and the isocenter indicated by the treatment plan, an interlock can be triggered to promptly pause the treatment in abnormal situations, effectively protecting the normal tissue of the target object from damage.

[0129] Therefore, compared to using X-ray tubes for image guidance, the ultra-low energy accelerator in this embodiment can serve as an image guidance device while assisting in radiotherapy. It enables real-time monitoring of the target area during treatment without inflicting additional doses on the patient, achieving true real-time image guidance. Furthermore, the beam energy of the ultra-low energy accelerator in this application is flexibly adjustable, allowing for tailored radiation doses to different patients and lesions, improving target area image quality and obtaining more accurate and clear images.

[0130] Furthermore, compared to X-ray tubes, ultra-low energy accelerators have a longer service life, which can reduce the maintenance pressure and costs at the actual deployment site. Therefore, in this embodiment, the radiotherapy device 303 can generate a therapeutic beam and an image-guided beam simultaneously through the ultra-low energy accelerator, taking into account both conformal irradiation and target area image information acquisition, effectively supporting the realization of precision radiotherapy.

[0131] In some embodiments, the radiotherapy device 303 further includes one or more radiation therapy heads. The irradiation isocenters of the low-energy accelerator, the ultra-low-energy accelerator, and the one or more radiation therapy heads are located on the same horizontal plane and focused on the same point. For example, the radiation therapy head may be a radiation source implemented using a gamma stereotactic system. In some embodiments, the radiation therapy head is provided with a cobalt radiation source.

[0132] In some embodiments, for target areas where ultra-low energy accelerators or low energy accelerators cannot effectively meet the dose requirements, the control device 302 can also control one or more radiation therapy heads to emit beams to the target area of ​​the target object based on the treatment plan.

[0133] In some embodiments, for target areas with high dose requirements, the control device can also control the ultra-low energy accelerator and / or low energy accelerator, as well as one or more radiation therapy heads, to simultaneously emit beams to the target area of ​​the target object according to the control parameters indicated by the treatment plan.

[0134] Alternatively, the radiation therapy head may employ intensity-modulated radiation therapy (IMRT) or volumetric modulated arc therapy (VMAT) techniques.

[0135] In some embodiments, if the target area of ​​the target object cannot be effectively irradiated by the ultra-low energy accelerator and the low energy accelerator at the same time, the control device 302 can control the ultra-low energy accelerator, the low energy accelerator and one or more radiation therapy heads to simultaneously emit beams to the target area of ​​the target object based on the treatment plan, so as to meet the target area dose requirements.

[0136] For example, such as Figure 7 The diagram shown is a structural schematic of a radiotherapy device 302 provided in an embodiment of this application. Figure 7 The radiotherapy device 302 shown includes an ultra-low energy accelerator, a low energy accelerator, a flat panel detector, a radiation therapy head, and a rotatable ring gantry. The ultra-low energy accelerator, low energy accelerator, flat panel detector, and radiation therapy head are all mounted on the rotatable ring gantry. Furthermore, the irradiation isocenters of the low energy accelerator, the ultra-low energy accelerator, and the radiation therapy head are located on the same horizontal plane and focused on the same point. The flat panel detector and the ultra-low energy accelerator are arranged opposite each other.

[0137] In some embodiments, the low-energy accelerator may be a radiation therapy head with the same or similar beam energy. That is, the radiotherapy device 302 may include an ultra-low-energy accelerator, one or more radiation therapy heads, a flat panel detector, and a rotatable ring gantry, but may not include a low-energy accelerator.

[0138] For example, such as Figure 8 The diagram shown is a structural schematic of another radiotherapy device 302 provided in an embodiment of this application. Figure 8 The radiotherapy device 302 shown includes an ultra-low energy accelerator, two radiation therapy heads, a flat panel detector, and a rotatable ring gantry. The ultra-low energy accelerator, two radiation therapy heads, and the flat panel detector are all mounted on the rotatable ring gantry. Furthermore, the isocenter of the ultra-low energy accelerator and the isocenter of the two radiation therapy heads are located on the same horizontal plane and focused on the same point. The flat panel detector and the ultra-low energy accelerator are arranged opposite each other.

[0139] In the electronic device of the fourth aspect of this utility model:

[0140] When using integrated units, Figure 9A schematic diagram of an electronic device is shown. This electronic device 60 can be a treatment plan generation apparatus to implement any of the possible treatment plan generation methods involved in the above embodiments. Alternatively, the electronic device 60 can be a radiotherapy control apparatus to implement any of the possible radiotherapy control methods involved in the above embodiments. Figure 9 As shown, the electronic device 60 may include a processing module 601 and a communication module 602. The processing module 601 can be used to control and manage the actions of the electronic device 60. The communication module 602 can be used to support communication between the electronic device 60 and other entities. Optionally, as... Figure 9 As shown, the electronic device 60 may also include a storage module 603 for storing the program code and data of the electronic device 60.

[0141] The processing module 601 can be a processor or a controller. The communication module 602 can be a transceiver, transceiver circuit, or communication interface, etc. The storage module 603 can be a memory.

[0142] When the processing module 601 is a processor, the communication module 602 is a transceiver, and the storage module 603 is a memory, the processor, transceiver, and memory can be connected via a bus.

[0143] In some embodiments, when the electronic device 60 serves as a treatment plan generation apparatus to implement any of the possible treatment plan generation methods described in the above embodiments, the electronic device 60 may include a TPS client and a TPS server. The TPS server may run a Treatment Planning System (TPS). This TPS system provides functions for developing, optimizing, and evaluating treatment plans.

[0144] The TPS client can be at least one of the following devices: smartphone, smartwatch, desktop computer, laptop, virtual reality terminal, augmented reality terminal, wireless terminal, and laptop computer. For example, in some embodiments, a user can trigger the TPS server to execute an adaptive treatment plan optimization process by running a radiotherapy planning system on the TPS server through the TPS client, and then display the optimized treatment plan. This effectively saves user time and provides a more intuitive presentation of the optimized treatment plan, allowing users to evaluate it.

[0145] The TPS server can be a standalone physical server, a server cluster consisting of multiple physical servers, a distributed file system, or at least one of the following cloud servers providing basic cloud computing services: cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks, and big data or artificial intelligence platforms. This disclosure does not limit the specific type of TPS server. In some embodiments, the number of TPS servers can be more or fewer, and this disclosure does not limit the number of TPS servers. Of course, the TPS server can also include other functions to provide more comprehensive and diverse services. In some embodiments, the TPS server is used to provide background services for the TPS client, such as performing an adaptive treatment plan optimization process.

[0146] In some embodiments, when the electronic device 60 serves as a radiotherapy control device to implement any of the possible radiotherapy control methods involved in the above embodiments, the electronic device 60 may include a host computer and a slave computer. The host computer is used to interact with the user, and the slave computer is used to control the movement of each moving part in the radiotherapy device 303. The host computer may be at least one of devices such as smartphones, smartwatches, desktop computers, laptops, virtual reality terminals, augmented reality terminals, wireless terminals, and laptop computers, and / or server devices. The slave computer may be a control device such as a programmable logic controller (PLC).

[0147] In the non-volatile storage medium of the fifth aspect of this utility model:

[0148] The non-volatile storage medium stores a computer program that, when read and executed, implements any of the possible treatment plan generation methods or any of the possible radiotherapy control methods described in the above embodiments.

[0149] In the computer program product of the fifth aspect of this utility model:

[0150] The computer program product includes computer instructions that, when executed on an electronic device, cause the electronic device to perform any of the possible treatment plan generation methods or any of the possible radiotherapy control methods described in the above embodiments.

[0151] In one embodiment, Figure 10 A schematic diagram of the structure of yet another electronic device is shown. For example... Figure 10As shown, the electronic device 70 includes a computing unit 701, which can perform various appropriate actions and processes based on a computer program stored in a read-only memory (ROM) 702 or a computer program loaded from a storage unit 708 into a random access memory (RAM) 703. The RAM 703 can also store various programs and data required for the operation of the electronic device 70. The computing unit 701, ROM 702, and RAM 703 are interconnected via a bus 704. An input / output (I / O) interface 705 is also connected to the bus 704.

[0152] Multiple components in electronic device 70 are connected to input / output interface 705, including: input unit 706, such as keyboard, mouse, etc.; output unit 707, such as various types of monitors, speakers, etc.; storage unit 708, such as disk, optical disk, etc.; and communication unit 709, such as network card, modem, wireless transceiver, etc. Communication unit 709 allows electronic device 70 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0153] The computing unit 701 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Examples of computing unit 701 include, but are not limited to, a central processing unit, a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, digital signal processors, and any suitable processor, controller, microcontroller, etc. The computing unit 701 performs the various methods and processes described above, such as treatment plan generation methods or radiotherapy control methods. For example, in one embodiment, the treatment plan generation method can be implemented as a computer software program tangibly included in a machine-readable medium, such as storage unit 708. As another example, in one embodiment, the radiotherapy control method can be implemented as a computer software program tangibly included in a machine-readable medium, such as storage unit 708.

[0154] In one embodiment, part or all of the computer program can be loaded and / or installed via ROM 702 and / or communication unit 709. Figure 10The illustrated electronic device 70. When a computer program is loaded into RAM 703 and executed by computing unit 701, one or more steps of the treatment plan generation method described above, or one or more steps of the radiotherapy control method described above, can be performed. Alternatively, in other embodiments, computing unit 701 can be configured to perform the treatment plan generation method or the radiotherapy control method by any other suitable means (e.g., by means of firmware).

[0155] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays, application-specific integrated circuits (ASICs), application-specific standard parts (ASSPs), systems-on-chip (SoCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0156] The program code used to implement the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0157] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory, read-only memory, erasable programmable read-only memory, optical fibers, portable compact disk read-only memory, optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0158] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the user, such as a cathode ray tube (CRT) or liquid crystal display (LCD) monitor; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the computer. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0159] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as a data server), or computing systems that include middleware components (e.g., an application server), or computing systems that include frontend components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., a communication network). Examples of communication networks include local area networks (LANs), wide area networks (WANs), and the Internet.

[0160] Computer systems can include clients and servers. Clients and servers are generally located far apart and typically interact via communication networks. Client-server relationships are created by computer programs running on the respective computers and having a client-server relationship with each other. Servers can be cloud servers, servers in distributed systems, or servers incorporating blockchain technology.

[0161] It should be understood that in the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0162] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0163] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0164] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0165] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software programs, implementation can be, in whole or in part, in the form of a computer program product. This computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid state disks (SSDs)).

[0166] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A radiotherapy system, characterized in that, include: The device includes a TPS device, a control device, and a radiotherapy device. The control device is connected to both the TPS device and the radiotherapy device. The radiotherapy device includes a low-energy accelerator and an ultra-low-energy accelerator for emitting beams to the target area of ​​the target object. The energy of the beam emitted by the low-energy accelerator is higher than the energy of the beam emitted by the ultra-low-energy accelerator. The TPS device is used to generate treatment plans; The control device is used to control the low-energy accelerator and / or the ultra-low-energy accelerator to emit a beam towards the target area of ​​the target object based on the treatment plan.

2. The radiotherapy system according to claim 1, characterized in that, The energy of the ultra-low energy accelerator is adjustable, and the energy range of the ultra-low energy accelerator is 300kV-1250kV.

3. The radiotherapy system according to claim 1, characterized in that, The low-energy accelerator has an energy of 6MV.

4. The radiotherapy system according to claim 1, characterized in that, The radiotherapy equipment also includes: A rotatable annular frame; the low-energy accelerator and the ultra-low-energy accelerator are mounted on the rotatable annular frame; the irradiation isocenter of the low-energy accelerator and the irradiation isocenter of the ultra-low-energy accelerator are located on the same horizontal plane and focus on the same point.

5. The radiotherapy system according to claim 4, characterized in that, The radiotherapy equipment also includes: A flat panel detector, mounted on the rotatable ring frame and positioned opposite the ultra-low energy accelerator, is used to receive the beam emitted by the ultra-low energy accelerator that passes through the target area of ​​the target object, and to generate image information of the target area of ​​the target object. The image information of the target area of ​​the target object is used to reflect the positional changes of the target area of ​​the target object.

6. The radiotherapy system according to claim 1, characterized in that, The radiotherapy equipment also includes: A single-layer grating assembly is disposed on the beam-out side of the ultra-low energy accelerator and is used to adjust the shape of the field of the beam emitted by the ultra-low energy accelerator.

7. The radiotherapy system according to claim 1, characterized in that, The radiotherapy device also includes: one or more radiation therapy heads; The irradiation isocenter of the low-energy accelerator, the irradiation isocenter of the ultra-low-energy accelerator, and the irradiation isocenter of one or more of the radiation therapy heads are located on the same horizontal plane and focused on the same point.

8. The radiotherapy system according to claim 7, characterized in that, The radiation therapy head is equipped with a cobalt radiation source.

9. The radiotherapy system according to claim 7, characterized in that, The control device is also used to control the low-energy accelerator, and / or the ultra-low-energy accelerator, and / or one or more radiation therapy heads to emit beams to the target area of ​​the target object based on the treatment plan.

10. The radiotherapy system according to claim 1, characterized in that, The radiotherapy equipment also includes: a rotatable ring gantry, a flat panel detector, a single-layer grating assembly, and one or more radiation therapy heads; The low-energy accelerator, the ultra-low-energy accelerator, the flat panel detector, and the one or more radiation therapy heads are mounted on the rotatable annular frame. The irradiation isocenter of the low-energy accelerator, the irradiation isocenter of the ultra-low-energy accelerator, and the irradiation isocenter of one or more of the radiation therapy heads are located on the same horizontal plane and focused on the same point. The flat panel detector is positioned opposite to the ultra-low energy accelerator and is used to receive the beam emitted by the ultra-low energy accelerator that passes through the target area of ​​the target object, and to generate image information of the target area of ​​the target object. The image information of the target area of ​​the target object is used to reflect the positional changes of the target area of ​​the target object. The single-layer grating assembly is disposed on the beam-out side of the ultra-low energy accelerator and is used to adjust the shape of the beam field emitted by the ultra-low energy accelerator.

Images