Radiotherapy head and radiotherapy equipment
By designing a radiation therapy head with switching components, the beam shape of multiple therapeutic beams is achieved, and the existing equipment is solved, which is large in weight, large in size and high in cost, and the equipment is lightweight, compact and cost-reduced.
Patent Information
- Application Number
- CN202311398946.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-26
- Publication Date
- 2025-05-06
AI Technical Summary
The existing radiation therapy equipment requires multiple treatment heads, which leads to large weight, large size and high cost, which is not conducive to large-scale promotion and use.
By designing a radiation therapy head, including a radiation source for providing a therapeutic beam and a field forming device for beam shape, the field forming device includes a primary collimation unit and a secondary collimation unit, the primary collimation unit and the secondary collimation unit realize switching of different sizes and field types through the switching components, thereby achieving beam shapes of multiple therapeutic beams.
It realizes a radiotherapy head that takes into account multiple radiation therapy methods, reduces the cost of equipment, reduces the size of equipment, and is convenient for large-scale promotion and use.
Smart Images
Figure CN119925827A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical equipment, and in particular to a radiotherapy head and radiotherapy equipment. Background Art
[0002] In the prior art, in order to form different radiation fields on a radiotherapy device, it is usually achieved by installing multiple treatment heads on the radiotherapy device. For example, in the prior art, in order to enable the same radiotherapy device to implement stereotactic radiotherapy and conformal intensity modulated therapy heads, independent stereotactic therapy heads and conformal intensity modulated therapy heads are usually installed on the frame at the same time.
[0003] Since multiple radiotherapy heads are provided, multiple sets of corresponding radiation sources and corresponding radiation shielding structures need to be provided; and in the related art, lead materials are usually used to shield the radiation. Therefore, the radiotherapy equipment integrating multiple treatment heads is not only heavy, large in size, but also expensive, which is not conducive to large-scale promotion and use. Summary of the invention
[0004] The purpose of the present application is to provide a radiotherapy head and a radiotherapy device, which can take into account a variety of different radiotherapy methods through one radiotherapy head, effectively reduce the equipment cost and reduce the volume of the entire equipment, so as to facilitate large-scale promotion and use.
[0005] The embodiment of the present application is implemented as follows:
[0006] On the one hand, an embodiment of the present application provides a radiotherapy head, comprising a radiation source for providing a therapeutic beam and a field shaping device for shaping the therapeutic beam; the field shaping device comprises a primary collimation unit and a secondary collimation unit arranged in sequence along the propagation path of the therapeutic beam; the primary collimation unit comprises at least two primary collimation structures of different sizes and a first switching component for carrying and driving the switching of the at least two primary collimation structures of different sizes; the secondary collimation unit comprises at least two secondary collimation structures capable of forming different fields and a second switching component for carrying and driving the switching of the at least two secondary collimation structures capable of forming different fields; the beam shaping of the therapeutic beam is achieved through the cooperation between the primary collimation unit and the secondary collimation unit.
[0007] As an optional implementation, the secondary collimation unit includes at least two secondary collimation structures capable of forming radiation fields of different sizes.
[0008] As an optional implementation, the secondary collimation unit includes at least two secondary collimation structures capable of forming different field types.
[0009] As an optional implementation, the at least two secondary collimation structures capable of forming different types of radiation fields include a focusing collimator and a multi-leaf grating collimator.
[0010] As an optional implementation, the first switching component is a push-pull switching component, and the first switching component can move in a first plane perpendicular to the centerline of the treatment beam to achieve switching of the at least two primary collimation structures of different sizes; or,
[0011] The second switching component is a push-pull switching component, and the second switching component can move in a second plane perpendicular to the centerline of the treatment beam to achieve switching of the at least two secondary collimation structures that can form different field types.
[0012] As an optional implementation, the first switching component is a rotating switching component, and the first switching component can rotate around a first axis parallel to the centerline of the treatment beam to achieve switching of the at least two primary collimation structures of different sizes; or,
[0013] The second switching component is a rotating switching component, and the second switching component can rotate around a second axis parallel to the centerline of the treatment beam to achieve switching of the at least two secondary collimation structures that can form different field types.
[0014] As an optional implementation, the first switching component is a rotating switching component, and the first switching component can rotate around a third axis perpendicular to the centerline of the treatment beam to achieve switching of the at least two primary collimation structures of different sizes; or,
[0015] The second switching component is a rotating switching component, and the second switching component can rotate around a fourth axis perpendicular to the centerline of the treatment beam to achieve switching of the at least two secondary collimation structures that can form different field types.
[0016] On the other hand, an embodiment of the present application further provides a radiotherapy device, comprising an annular frame and the above-mentioned radiotherapy head; the radiotherapy head is arranged on the annular frame, and the annular frame can drive the treatment head to rotate around the central axis of the annular frame.
[0017] As an optional implementation, the annular frame can also swing around a vertical axis perpendicular to the central axis of the annular frame.
[0018] As an optional embodiment, the radiotherapy equipment further includes an imaging device, and the imaging device includes an imaging source and an imager.
[0019] The beneficial effects of the embodiments of the present application include:
[0020] The embodiment of the present application provides a radiotherapy head, including a radiation source for providing a therapeutic beam and a field shaping device for shaping the therapeutic beam. The field shaping device of the embodiment of the present application includes a primary collimation unit and a secondary collimation unit arranged in sequence along the propagation path of the therapeutic beam. Among them, the primary collimation unit includes at least two primary collimation structures of different sizes and a first switching component for carrying and driving the switching of at least two primary collimation structures of different sizes; the secondary collimation unit includes at least two secondary collimation structures capable of forming different fields and a second switching component for carrying and driving the switching of at least two secondary collimation structures capable of forming different fields. The radiotherapy head of the embodiment of the present application can make any primary collimation structure located on the propagation path of the therapeutic beam through the first switching component, and can make any secondary collimation structure located on the propagation path of the therapeutic beam through the first switching component, so that the therapeutic beam generated by the radiation source can pass through the selected primary collimation structure and the selected secondary collimation structure in sequence, and the beam shaping of the therapeutic beam is realized through the cooperation of the primary collimation unit and the secondary collimation unit. Therefore, the radiotherapy head provided in the present application can achieve various treatment beam shapes by switching the primary collimation structure and the secondary collimation unit, so that one radiotherapy head can take into account a variety of different radiotherapy methods.
[0021] The radiotherapy device provided by the embodiment of the present application can realize a variety of different beam shapes for the treatment beam by carrying the radiotherapy head provided by the present application, thereby avoiding the need to carry multiple radiotherapy heads on the radiotherapy device, effectively reducing the weight of the entire device, reducing the volume of the entire device, and improving the flexibility of the radiotherapy device, making it easier to move and place. In addition, the embodiment of the present application can effectively reduce the cost of the radiotherapy device, thereby reducing the cost of use, which is conducive to promoting the wide-range application of radiotherapy equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0023] Figure 1 This is one of the structural schematic diagrams of the radiotherapy head according to the embodiment of the present application;
[0024] Figure 2 This is the second structural schematic diagram of the radiotherapy head according to the embodiment of the present application;
[0025] Figure 3 This is the third structural schematic diagram of the radiotherapy head according to the embodiment of the present application;
[0026] Figure 4 This is one of the structural schematic diagrams of the radiotherapy equipment according to the embodiment of the present application;
[0027] Figure 5 This is the second structural schematic diagram of the radiotherapy device according to the embodiment of the present application;
[0028] Figure 6 This is the third structural diagram of the radiotherapy device according to the embodiment of the present application;
[0029] Figure 7 This is the fourth structural schematic diagram of the radiotherapy device according to the embodiment of the present application;
[0030] Figure 8 This is the fifth structural schematic diagram of the radiotherapy equipment according to the embodiment of the present application.
[0031] Icons: 100-ray source; 101-field shaping device; 102-therapy beam; 103-primary collimation unit; 104-secondary collimation unit; 105-primary collimation structure; 106-secondary collimation structure; 107-focusing collimator; 108-multileaf grating collimator; 109-push-pull switching assembly; 110-rotation switching assembly; 111-ring frame; 112-radiotherapy head; 113-imaging source; 114-imager; 115-first plane; 116-second plane; 117-first axis; 118-second axis; 119-third axis; 120-fourth axis. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0033] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0034] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.
[0035] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0036] In the prior art, in order to form different radiation fields on the radiotherapy equipment, it is usually achieved by setting up multiple treatment heads on the radiotherapy equipment. Since multiple radiotherapy heads are set up, it is necessary to set up multiple sets of corresponding radiation sources and corresponding radiation shielding structures; and in the related art, lead materials are usually used to shield the radiation. Therefore, the radiotherapy equipment integrating multiple treatment heads is not only heavy, large in size and expensive, but also not conducive to large-scale promotion and use.
[0037] In view of the above problems, the present application provides a radiotherapy head.
[0038] Reference Figure 1 As shown, a radiotherapy head 112 provided in an embodiment of the present application includes a radiation source 100 for providing a therapeutic beam 102 and a field shaping device 101 for shaping the therapeutic beam 102; the field shaping device 101 includes a primary collimation unit 103 and a secondary collimation unit 104 which are sequentially arranged along the propagation path of the therapeutic beam 102; the primary collimation unit 103 includes at least two primary collimation structures 105 of different sizes and a first switching component for carrying and driving the switching of at least two primary collimation structures 105 of different sizes; the secondary collimation unit 104 includes at least two secondary collimation structures 106 capable of forming different field types and a second switching component for carrying and driving the switching of at least two secondary collimation structures 106 capable of forming different field types; the beam shaping of the therapeutic beam 102 is achieved through the cooperation of the primary collimation unit 103 and the secondary collimation unit 104.
[0039] It should be noted that the energy size of the ray source 100 can be selected by those skilled in the art as needed, and is not specifically limited here. Exemplarily, the energy of the ray source 100 is 6MV. Exemplarily, two primary collimation structures 105 of different sizes can be set on the first switching component, and two secondary collimation structures 106 of different field types can be set on the second switching component. Exemplarily, three primary collimation structures 105 of different sizes can be set on the first switching component, and three secondary collimation structures 106 of different field types can be set on the second switching component. Those skilled in the art can set the types of the primary collimation structure 105 and the secondary collimation structure 106 as needed. It should also be noted that the first switching component of the embodiment of the present application can switch the primary collimation structure 105 to the propagation path of the treatment beam 102, and the second switching component can switch the secondary collimation structure 106 to the propagation path of the treatment beam 102, and the treatment beam 102 can sequentially pass through the primary collimation structure 105 and the secondary collimation structure 106 on the path.
[0040] The embodiment of the present application provides a radiotherapy head 112, comprising a radiation source 100 for providing a treatment beam 102 and a field shaping device 101 for beam-shaping the treatment beam 102. The primary collimation unit 103 comprises at least two primary collimation structures 105 of different sizes and a first switching component for carrying and driving the switching of at least two primary collimation structures 105 of different sizes; the secondary collimation unit 104 comprises at least two secondary collimation structures 106 capable of forming different fields and a second switching component for carrying and driving the switching of at least two secondary collimation structures 106 capable of forming different fields. The radiotherapy head 112 of the embodiment of the present application can make any one of the primary collimation structures 105 located on the propagation path of the treatment beam 102 through the first switching component, and can make any one of the secondary collimation structures 106 located on the propagation path of the treatment beam 102 through the second switching component, so that the treatment beam 102 generated by the ray source 100 can sequentially pass through the selected primary collimation structure 105 and the selected secondary collimation structure 106, and realize the beam shape of the treatment beam 102 through the cooperation of the primary collimation unit 103 and the secondary collimation unit 104. Therefore, the radiotherapy head 112 provided by the present application can realize the beam shapes of multiple treatment beams 102 through the switching combination of the primary collimation structure 105 and the secondary collimation unit 104, so that one radiotherapy head 112 can take into account multiple different radiotherapy methods.
[0041] Reference Figure 1As shown, as an optional implementation, the secondary collimation unit 104 includes at least two secondary collimation structures 106 capable of forming fields of different sizes. It should be noted that the at least two secondary collimation structures 106 provided in the embodiment of the present application can enable the beam to form fields of different sizes. In other words, the difference between the at least two secondary collimation structures 106 claimed in the embodiment of the present application is that the formed fields are of different sizes.
[0042] As an optional implementation, the secondary collimation unit 104 includes at least two secondary collimation structures 106 capable of forming different types of radiation fields. It should be noted that the at least two secondary collimation structures 106 provided in the embodiment of the present application can form different types of radiation fields.
[0043] Reference Figure 2 and Figure 3 As shown, exemplarily, at least two secondary collimation structures 106 capable of forming different field types include a focusing collimator 107 for realizing a focused field type and a multi-leaf grating collimator 108 for realizing a conformal field type.
[0044] Exemplarily, at least two secondary collimation structures 106 capable of forming different field types include a secondary collimation structure 106 for realizing a focusing field type, a secondary collimation structure 106 for realizing a slicing field, and a secondary collimation structure 106 for realizing a conformal field. Those skilled in the art can select and set them as needed.
[0045] The secondary collimation structure 106 for realizing the slice field type is a binary multi-leaf grating with only two states of on and off; the secondary collimation structure 106 for realizing the conformal field is a conventional multi-leaf grating with continuously adjustable leaf positions. The secondary collimation structure 106 for realizing the focused field type is a channel collimator with one or more through holes. The size of the channel collimator can be set by a person skilled in the art as required.
[0046] Reference Figure 2 and Figure 4 As shown, as an optional embodiment, the first switching component is a push-pull switching component 109, and the first switching component can move in a first plane 115 perpendicular to the center line of the treatment beam 102 to achieve switching of at least two primary collimation structures 105 of different sizes; or,
[0047] The second switching component is a push-pull switching component 109, which can move in a second plane 116 perpendicular to the center line of the treatment beam 102 to achieve switching of at least two secondary collimation structures 106 that can form different types of fields. It should be noted that the push-pull switching component 109 includes a bearing structure for mounting the primary collimation structure 105 or the secondary collimation structure 106 and a driving unit connected to the bearing structure. The driving unit can be an electric telescopic rod, a pneumatic telescopic rod, or an electric sliding guide rail. Those skilled in the art can select and set it according to needs. The driving unit can drive the bearing structure to move in a plane, with the purpose of enabling the first switching component and the second switching component to achieve movement in a plane perpendicular to the center line of the treatment beam 102, so that the selected primary collimation structure 105 and the secondary collimation structure 106 can be located on the propagation path of the beam.
[0048] Reference Figure 3 and Figure 7 As shown, as an optional embodiment, the first switching component is a rotating switching component 110, which can rotate around a first axis 117 parallel to the center line of the treatment beam 102 to achieve switching of at least two primary collimation structures 105 of different sizes; or, the second switching component is a rotating switching component 110, which can rotate around a second axis 118 parallel to the center line of the treatment beam 102 to achieve switching of at least two secondary collimation structures 106 that can form different types of fields. It should be noted that the rotating switching component 110 includes a rotating bearing structure for mounting the primary collimation structure 105 or the secondary collimation structure 106, and a rotating drive unit connected to the rotating bearing structure, and the rotating drive unit can be a motor or other types of rotating drive units.
[0049] Reference Figure 8 As shown, as an optional embodiment, the first switching component is a rotating switching component 110, which can rotate around a third axis 119 perpendicular to the center line of the treatment beam 102 to achieve switching of at least two primary collimation structures 105 of different sizes; or, the second switching component is a rotating switching component 110, which can rotate around a fourth axis 120 perpendicular to the center line of the treatment beam 102 to achieve switching of at least two secondary collimation structures 106 that can form different types of fields. Different from the above embodiment, the rotation axis of the rotating switching component 110 of the embodiment of the present application is perpendicular to the center line of the treatment beam 102, that is, the selected primary collimation structure 105 and the secondary collimation structure 106 can be located on the propagation path of the beam by driving the rotating bearing structure to rotate in a plane parallel to the center line of the treatment beam 102 through the rotating driving unit.
[0050] Reference Figure 4 and Figure 5As shown, the embodiment of the present application also provides a radiotherapy device, including an annular frame 111 and the above-mentioned radiotherapy head 112; the radiotherapy head 112 is arranged on the annular frame 111, and the annular frame 111 can drive the treatment head to rotate around the central axis of the annular frame 111. The radiotherapy device provided by the embodiment of the present application can realize a variety of different beam shapes for the treatment beam 102 by carrying the radiotherapy head 112 provided by the present application, thereby avoiding carrying multiple radiotherapy heads 112 on the radiotherapy setting, effectively reducing the weight of the entire device, reducing the volume of the entire device, so that the flexibility of the radiotherapy device is improved, and it is easy to move and place. In addition, the embodiment of the present application can effectively reduce the cost of radiotherapy equipment, thereby reducing the cost of use, which is conducive to promoting the wide range of applications of radiotherapy equipment.
[0051] Reference Figure 6 As shown, as an optional embodiment, the annular frame 111 can also swing around a vertical axis perpendicular to the central axis of the annular frame 111. Further, the annular frame 111 of the embodiment of the present application can swing around a vertical axis perpendicular to the ground, and those skilled in the art can set the swing angle as needed. Exemplarily, the swing angle is 20-40°. Exemplarily, the annular frame 111 can also swing 30° around a vertical axis perpendicular to the central axis of the annular frame 111. The embodiment of the present application can achieve non-coplanar irradiation through the swing of the annular frame 111 and the rotation of the radiotherapy head 112 driven by the annular frame 111.
[0052] Reference Figure 4 and Figure 5 As shown, as an optional implementation, the radiotherapy device further includes an imaging device, and the imaging device includes an imaging source 113 and an imager 114. Further, in the embodiment of the present application, an imaging device is also provided on the radiotherapy device for realizing real-time monitoring of the treatment during the treatment process. It should be noted that the imaging device can be provided on the annular frame 111 or outside the annular frame 111, and those skilled in the art can provide the device as required.
[0053] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A radiotherapy head, characterized in that: It comprises a radiation source for providing a therapeutic beam and a field shaping device for shaping the therapeutic beam; the field shaping device comprises a primary collimation unit and a secondary collimation unit which are sequentially arranged along the propagation path of the therapeutic beam; the primary collimation unit comprises at least two primary collimation structures of different sizes and a first switching component for carrying and driving the switching of the at least two primary collimation structures of different sizes; the secondary collimation unit comprises at least two secondary collimation structures capable of forming different fields and a second switching component for carrying and driving the switching of the at least two secondary collimation structures capable of forming different fields; the beam shaping of the therapeutic beam is achieved through the cooperation between the primary collimation unit and the secondary collimation unit.
2. The radiotherapy head according to claim 1, characterized in that: The secondary collimation unit includes at least two secondary collimation structures capable of forming radiation fields of different sizes.
3. The radiotherapy head according to claim 1, characterized in that: The secondary collimation unit includes at least two secondary collimation structures capable of forming different radiation field types.
4. The radiation therapy head according to claim 3, characterized in that: The at least two secondary collimation structures capable of forming different types of fields include a focusing collimator and a multi-leaf grating collimator.
5. The radiation therapy head according to claim 1, characterized in that: The first switching component is a push-pull switching component, and the first switching component can move in a first plane perpendicular to the centerline of the treatment beam to achieve switching of the at least two primary collimation structures of different sizes; or, The second switching component is a push-pull switching component, and the second switching component can move in a second plane perpendicular to the centerline of the treatment beam to achieve switching of the at least two secondary collimation structures that can form different field types.
6. The radiation therapy head according to claim 1, characterized in that: The first switching component is a rotating switching component, and the first switching component can rotate around a first axis parallel to the centerline of the treatment beam to achieve switching of the at least two primary collimation structures of different sizes; or, The second switching component is a rotating switching component, and the second switching component can rotate around a second axis parallel to the centerline of the treatment beam to achieve switching of the at least two secondary collimation structures that can form different field types.
7. The radiation therapy head according to claim 1, characterized in that: The first switching component is a rotating switching component, and the first switching component can rotate around a third axis perpendicular to the centerline of the treatment beam to achieve switching of the at least two primary collimation structures of different sizes; or, The second switching component is a rotating switching component, and the second switching component can rotate around a fourth axis perpendicular to the centerline of the treatment beam to achieve switching of the at least two secondary collimation structures that can form different field types.
8. A radiotherapy device, characterized in that: It comprises an annular frame and the radiotherapy head according to any one of claims 1 to 7; the radiotherapy head is arranged on the annular frame, and the annular frame can drive the treatment head to rotate around the central axis of the annular frame.
9. The radiotherapy device according to claim 8, characterized in that The annular frame can also swing around a vertical axis perpendicular to the central axis of the annular frame.
10. The radiotherapy device according to claim 8, characterized in that Also included is an imaging device comprising an imaging source and an imager.