Whole body irradiation accelerator
By designing a full-body irradiation accelerator, the patient receives radiation in a lying posture, the treatment bed is stationary, and the radiation source covers the whole-body irradiation field, solving the problem of difficulty in maintaining the body position and uneven ray absorption in the prior art, achieving uniform Irradiation effect.
Patent Information
- Application Number
- CN202310799415.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-30
- Publication Date
- 2025-01-07
AI Technical Summary
During the whole body radiation process, the patient receives radiation in a standing or sitting position, which makes it difficult to maintain the body position and uneven ray absorption, which affects the treatment effect.
Design a full-body irradiation accelerator, where the patient receives radiation in a lying posture, the treatment bed remains stationary, and the radiation source can cover the whole body irradiation field. The radiant beam shape and irradiation field are realized through collimation unit and irradiation field adjustment device. Size adjustment.
The patient's position is easy to maintain, the irradiation effect is even, and the ray absorption is even, which improves the irradiation effect of the treatment.
Smart Images
Figure CN119258412A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and in particular to a whole-body irradiation accelerator. Background Art
[0002] Whole body irradiation, also known as total body irradiation (TBI), refers to radiation therapy of the human body. It is the main treatment method before hematopoietic stem cell transplantation or bone marrow transplantation.
[0003] In the related art, when whole-body irradiation is performed, patients are usually irradiated in a standing or sitting position. The standing position makes it difficult for some weak patients to complete the entire treatment course, and it is also difficult for the patient to maintain the body position; the sitting position is not easy to fix, and the shaking of the patient's body makes the radiation absorption dose uneven. It is urgent to propose a new technology to solve the problems existing in the above related technologies. Summary of the invention
[0004] The embodiment of the present application provides a whole-body irradiation accelerator. During irradiation, the patient receives irradiation treatment in a lying position, and the body position is easy to maintain. During irradiation, the treatment bed remains stationary, and the irradiation effect is excellent.
[0005] The present application provides a whole-body irradiation accelerator, comprising: an irradiation source for emitting radiation rays; a treatment bed for carrying a lying patient; the treatment bed is located below the irradiation source; during irradiation, the treatment bed remains stationary, and the irradiation source can form an irradiation field on the treatment bed that covers the whole body of the lying patient.
[0006] In some embodiments of the present application, the irradiation source includes a collimation unit, which is used to beam-shape the radiation rays emitted by the irradiation source. The irradiation source is arranged at a preset height above the treatment bed so that the irradiation source can form an irradiation field on the treatment bed that covers the entire body of the lying patient.
[0007] In some embodiments of the present application, the treatment bed is fixedly disposed directly below the radiation source.
[0008] In some embodiments of the present application, the treatment couch is movable to achieve switching between the upper bed position and the irradiation position.
[0009] In some embodiments of the present application, the treatment couch can move in a direction perpendicular to the center line of the irradiation field to achieve switching between the upper bed position and the irradiation position.
[0010] In some embodiments of the present application, the treatment couch is capable of rotating to achieve switching between the upper bed position and the irradiation position.
[0011] In some embodiments of the present application, the whole body irradiation accelerator further includes an irradiation field adjustment device for adjusting the size of the irradiation field formed by the irradiation source on the treatment bed.
[0012] In some embodiments of the present application, the irradiation field adjustment device includes: a switching base, and a plurality of collimation units with different aperture sizes arranged on the switching base, and the switching base can drive the plurality of collimation units with different aperture sizes to move to achieve switching of the plurality of collimation units with different aperture sizes.
[0013] In some embodiments of the present application, the irradiation field adjustment device is a telescopic device, which is connected to the radiation source. By extending and retracting the telescopic device, the distance between the irradiation source and the treatment bed is adjusted to adjust the size of the irradiation field.
[0014] In some embodiments of the present application, the irradiation field adjustment device is a collimator with adjustable aperture size, which is arranged below the ray outlet of the irradiation source.
[0015] The whole body irradiation acceleration provided by the embodiment of the present application includes an irradiation source for emitting radiation rays; a treatment bed for carrying a lying patient; the treatment bed is located below the irradiation source; during irradiation, the treatment bed remains stationary, and the irradiation source can form an irradiation field on the treatment bed that covers the whole body of the lying patient. Since during irradiation, the patient receives irradiation treatment in a lying manner, the body position is easy to maintain, and during irradiation, the treatment bed remains stationary, and the patient is irradiated through the irradiation field formed by the irradiation source that can cover the whole body of the lying patient, so that the patient absorbs the radiation rays evenly and the irradiation effect is excellent. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 is a schematic diagram of a whole-body irradiation accelerator provided in an embodiment of the present application;
[0018] Figure 2 It is a schematic diagram of the structure of an embodiment of the radiation field adjustment device provided in the embodiments of the present application;
[0019] Figure 3 is a schematic structural diagram of another embodiment of the radiation field adjustment device provided in the embodiments of the present application;
[0020] Figure 4 It is a structural schematic diagram of another embodiment of the radiation field adjustment device provided in the embodiments of the present application;
[0021] Figure 5 It is a structural schematic diagram of another embodiment of the radiation field adjustment device provided in the embodiments of the present application. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.
[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0024] In this application, the term "in some embodiments" is used to mean "used as an example, illustration, or illustration". Any embodiment described in this application as "in some embodiments" is not necessarily to be construed as being preferred or advantageous over other embodiments. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.
[0025] In the related art, when whole-body irradiation is performed, patients are usually irradiated in a standing or sitting position. The standing position makes it difficult for some weak patients to complete the entire course of treatment, and it is also difficult for the patient to maintain a fixed position; the sitting position is difficult to fix, and the shaking of the patient's body makes the radiation absorption dose uneven.
[0026] The present application embodiment provides a whole body irradiation accelerator, such as Figure 1As shown, the whole body irradiation accelerator 100 includes: an irradiation source 101 and a treatment bed 102. Among them:
[0027] The radiation source 101 is used to emit radiation rays, and perform radiation therapy on the patient P using the radiation rays.
[0028] The treatment couch 102 is located below the radiation source 101 and is used to carry a lying patient P. During radiation therapy, the patient P lies on the treatment couch 102 to receive radiation.
[0029] During irradiation, the treatment couch 102 remains stationary, and the irradiation source 101 can form an irradiation field 103 covering the whole body of the patient P lying on the treatment couch 102 .
[0030] The whole body irradiation accelerator provided in the embodiment of the present application is easy to maintain in body position because the patient receives irradiation treatment in a lying position during irradiation, and the treatment bed remains stationary during irradiation. The patient is irradiated through an irradiation field formed by the irradiation source that can cover the whole body of the lying patient, so that the patient absorbs the radiation rays evenly and the irradiation effect is excellent.
[0031] In the embodiment of the present application, there is no limitation on the type of rays emitted by the irradiation source 101 , for example, it may be X-rays, gamma rays, electron beams, proton beams, heavy ion beams, etc.
[0032] In an embodiment of the present application, the irradiation source includes a collimation unit, which is used to beam-shape the radiation rays emitted by the irradiation source. For example, the collimation unit can be a collimator with a conical collimation hole. The irradiation source is arranged at a preset height above the treatment bed. This height can be set according to the size of the collimation hole on the collimation unit. By coordinating this height with the size of the collimation hole, the irradiation source can form an irradiation field covering the entire body of a lying patient on the treatment bed.
[0033] In some embodiments, the treatment couch of the whole-body irradiation accelerator provided in the present application can be fixedly disposed below the irradiation source, and the treatment couch remains stationary during irradiation or non-irradiation.
[0034] In some embodiments, the treatment couch of the whole body irradiation accelerator provided by the present application is movable, and the treatment couch has an upper bed position and an irradiation position. During non-irradiation, the treatment couch switches and moves between the upper bed position and the irradiation position; during irradiation, the treatment couch remains stationary in the irradiation position.
[0035] Among them, the upper bed position is used for positioning the patient before receiving radiation therapy, and the irradiation position is used for the patient to receive radiation therapy, that is, the patient is positioned when the treatment bed is in the upper bed position, and the patient's irradiation therapy is performed when the treatment bed is in the irradiation position. By setting the upper bed position and the irradiation position for the treatment bed, it is convenient for the patient to be positioned before receiving radiation therapy.
[0036] In some embodiments, the treatment couch can move in a direction perpendicular to the center line of the irradiation field to achieve switching movement between the upper bed position and the irradiation position; in other embodiments, the treatment couch can achieve switching movement between the upper bed position and the irradiation position by rotating movement.
[0037] In some embodiments, the size of the radiation field formed by the radiation source on the treatment bed is adjustable to accommodate patients of different heights, weights and sizes, and to prevent certain dangerous organs of the patient (eg, eyes) from being irradiated.
[0038] In some embodiments, the whole body irradiation accelerator provided in the embodiments of the present application further includes an irradiation field adjustment device, which is used to adjust the size of the irradiation field formed by the irradiation source on the treatment bed.
[0039] In some embodiments, the irradiation field adjustment device includes: a switching base, and a plurality of collimation units with different aperture sizes arranged on the switching base. The switching base can drive the plurality of collimation units with different aperture sizes to move, so as to realize the switching of the plurality of collimation units with different aperture sizes, thereby realizing the adjustment of the irradiation field.
[0040] In some embodiments, the switching base is disposed below the radiation outlet of the irradiation source, and the switching base can move in a direction perpendicular to the center line of the irradiation field to switch between multiple collimation units with different aperture sizes to adjust the size of the irradiation field. Figure 2 As shown, the switching base is a push-pull base 1041 on which a plurality of collimating units 1042 with different aperture sizes are arranged. The push-pull base 1041 can move along the Y direction to achieve switching of the plurality of collimating units 1042 with different aperture sizes.
[0041] In some embodiments, the switching base is disposed below the radiation outlet of the irradiation source, and the switching base can rotate around a vertical axis parallel to the center line of the irradiation field to switch between multiple collimation units with different aperture sizes to adjust the size of the irradiation field. Figure 3 As shown, the switching base is a turntable base 1051 on which a plurality of collimating units 1052 with different aperture sizes are arranged. The turntable base 1051 can rotate around the X-axis to achieve switching of the plurality of collimating units 1052 with different aperture sizes.
[0042] In some embodiments, the multiple collimating units with different aperture sizes may be a multiple collimating holes with different aperture sizes, or may be a multiple collimators with different aperture sizes.
[0043] In some embodiments, the irradiation field adjustment device is a telescopic device, which is connected to the radiation source, for example, arranged on the top or side of the radiation source, and the distance between the radiation source and the treatment bed is adjusted by the telescopic movement of the telescopic device, thereby adjusting the size of the radiation field. Figure 4 As shown, the telescopic device is a telescopic rod 1061, which is connected to the top of the radiation source 101. When the telescopic rod 1061 moves downward and stretches, the distance between the radiation source 101 and the treatment bed 102 decreases, and the radiation field becomes larger; when the telescopic rod 1061 moves upward and contracts, the distance between the radiation source 101 and the treatment bed 102 increases, and the radiation field becomes smaller.
[0044] In some embodiments, the radiation field adjustment device is a collimator with adjustable aperture size, which is arranged below the ray outlet of the radiation source. Figure 5 As shown, the collimator with adjustable aperture size includes two groups of beam limiting plates 1071 and 1072, and the two groups of beam limiting plates 1071 and 1072 enclose a square collimation hole 1073. One group of beam limiting plates 1071 in the two groups of beam limiting plates 1071 and 1072 can move along the X direction, and the other group of beam limiting plates 1072 can move along the Y direction, wherein the X direction and the Y direction are perpendicular to each other. The size of the enclosed square collimation hole 1073 can be adjusted by the movement of the two groups of beam limiting plates 1071 and 1072, thereby adjusting the size of the radiation field.
[0045] It should be noted here that the collimator with adjustable aperture size can also be a collimator structure that can form adjustable collimating holes of other shapes (for example, circular, polygonal, etc.), and the present application does not limit this.
[0046] The whole-body irradiation accelerator provided in the embodiment of the present application is introduced in detail above. The principle and implementation mode of the present application are explained in this article by using specific examples. The description of the above embodiments is only used to help understand the method and core idea of the present application. At the same time, for technicians in this field, according to the idea of the present application, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A whole body irradiation accelerator, characterized in that: include: An irradiation source for emitting radiation rays; Treatment bed, used to carry lying patients; The treatment bed is located below the radiation source; During irradiation, the treatment couch remains stationary, and the irradiation source can form an irradiation field on the treatment couch that covers the entire body of the lying patient.
2. The whole body irradiation accelerator according to claim 1, characterized in that: The radiation source includes a collimating unit, which is used to beam-shape the radiation rays emitted by the radiation source. The radiation source is arranged at a preset height above the treatment bed so that the radiation source can form an irradiation field on the treatment bed that covers the whole body of the lying patient.
3. The whole body irradiation accelerator according to claim 1, characterized in that: The treatment bed is fixedly arranged directly below the radiation source.
4. The whole body irradiation accelerator according to claim 1, characterized in that: The treatment couch is movable to achieve switching between the upper bed position and the irradiation position.
5. The whole body irradiation accelerator according to claim 4, characterized in that: The treatment couch can move in a direction perpendicular to the center line of the irradiation field to achieve switching between the upper bed position and the irradiation position.
6. The whole body irradiation accelerator according to claim 4, characterized in that: The treatment couch can rotate to achieve switching between the upper bed position and the irradiation position.
7. The whole body irradiation accelerator according to claim 1, characterized in that: It also includes an irradiation field adjustment device for adjusting the size of the irradiation field formed by the irradiation source on the treatment bed.
8. The whole body irradiation accelerator according to claim 7, characterized in that: The irradiation field adjustment device includes: a switching base, and a plurality of collimation units with different aperture sizes arranged on the switching base. The switching base can drive the plurality of collimation units with different aperture sizes to move, so as to realize the switching of the plurality of collimation units with different aperture sizes.
9. The whole body irradiation accelerator according to claim 7, characterized in that: The irradiation field adjustment device is a telescopic device, which is connected to the radiation source. By extending and retracting the telescopic device, the distance between the radiation source and the treatment bed is adjusted to adjust the size of the irradiation field.
10. The whole body irradiation accelerator according to claim 7, characterized in that: The irradiation field adjustment device is a collimator with adjustable aperture size, which is arranged below the ray outlet of the irradiation source.