Linear accelerator integrated with image equipment

Abstract

The utility model relates to the technical field of medical instruments, in particular to a linear accelerator integrated with image equipment. Comprising an accelerator treatment head, an accelerator multi-leaf grating, a fixed support, an accelerator system rotating support, a CT system rotating support, a CT detector, an electron radiation field imager, an accelerator system rotating support driving module, a CT system rotating support driving module, a CT bulb tube, a CT collimator, an accelerator system bearing and a CT system bearing. An accelerator system rotating support driving module and a CT system rotating support driving module are arranged on the fixed support, a CT system bearing is connected with the fixed support and the CT system rotating support, and a CT system and a linear accelerator system radiation source are designed to be in the same plane. Therefore, the purposes of coaxial rotation and coplanar diagnosis and treatment of the CT system and the linear accelerator system, high-speed rotation imaging of the CT system and low-speed rotation treatment of the linear accelerator system are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a linear accelerator integrated with imaging equipment. Background Art

[0002] In the process of tumor treatment with traditional equipment, the patient must first use the CT equipment to simulate tumor positioning to confirm the tumor position, and then transfer to the linear accelerator equipment for tumor treatment, and use the CBCT or EPID (electronic portal imaging device) on the linear accelerator for image-guided treatment. The main disadvantages of this treatment method are as follows: the patient uses two sets of equipment (CT equipment and linear accelerator equipment) for tumor positioning and tumor radiotherapy. During the transfer of the two sets of equipment, the patient's tumor positioning position and radiotherapy position are prone to offset, resulting in inaccurate treatment position; the transfer of patients between the two treatment rooms will delay a lot of treatment time; a complete set of diagnostic CT and a set of linear accelerator are required to complete the patient's tumor positioning and treatment; CBCT or EPID (electronic portal imaging device) image-guided treatment has poor image effects.

[0003] At present, there are some linear accelerators integrated with CT imaging equipment on the market, which integrate the CT system and the accelerator system into one frame: one way is to integrate the CT system and the accelerator into a rotating frame, because CT imaging requires high-speed rotation, for example, the conventional speed requires 120RPM or even higher speed, while the linear accelerator treatment requires a lower speed, generally below 2RPM, and the linear accelerator components can only bear a lower centrifugal force and cannot rotate at high speed, so this method cannot achieve good CT imaging quality. Another way is to integrate the CT system and the accelerator on two different rotating brackets, the front part is the linear accelerator rotating bracket, and the rear part is the CT rotating bracket. The linear accelerator component and the CT component can rotate at different speeds respectively, but the problem with this design method is that the CT radiation source plane is far away from the linear accelerator radiation source plane, and the two radiation sources cannot be designed to be coplanar, which will also lead to a larger bed board size for the patient bed, increasing costs and causing treatment errors due to different sagging amounts of the bed board in the diagnosis plane and the treatment plane.

[0004] In summary, during tumor treatment, the CT and linear accelerator systems can only rotate slowly, and the diagnostic CT radiation source plane is not coplanar with the linear accelerator treatment radiation source plane, which affects the treatment effect. Utility Model Content

[0005] The utility model aims to provide a linear accelerator with integrated imaging equipment, which solves the problem that during tumor treatment, CT and linear accelerator systems can only rotate slowly, and the diagnostic CT ray source plane is not coplanar with the linear accelerator treatment ray source plane, which affects the treatment effect.

[0006] To achieve the above-mentioned purpose, the utility model adopts a linear accelerator with integrated imaging equipment, including an accelerator treatment head, an accelerator multi-leaf grating, a fixed bracket, an accelerator system rotating bracket, a CT system rotating bracket, a CT detector, an electronic portal imager, an accelerator system rotating bracket drive module, a CT system rotating bracket drive module, a CT tube, a CT collimator, an accelerator system bearing and a CT system bearing, the accelerator system bearing is respectively connected to the fixed bracket and the accelerator system rotating bracket, the accelerator treatment head, the accelerator multi-leaf grating and the electronic portal imager are respectively fixedly connected to the accelerator system rotating bracket, the fixed bracket is respectively provided with the accelerator system rotating bracket drive module and the CT system rotating bracket drive module, the CT system bearing is respectively connected to the fixed bracket and the CT system rotating bracket, and the CT detector, the CT tube and the CT collimator are respectively arranged on the outside of the CT system rotating bracket.

[0007] Among them, the accelerator system rotating bracket driving module includes an accelerator driving system large wheel, an accelerator system driving component and an accelerator system driving small wheel. The accelerator system rotating bracket is fixedly connected to the accelerator system bearing, the accelerator driving system large wheel is fixedly connected to the fixed bracket, the accelerator system driving small wheel is rotatably arranged on the accelerator system rotating bracket, and the accelerator system driving component is respectively attached to the outer side walls of the accelerator driving system large wheel and the accelerator system driving small wheel.

[0008] Among them, the accelerator system rotating bracket driving module also includes a first motor and a first reducer, the first motor is fixedly connected to the fixed bracket, the first reducer is connected to the output end of the first motor, and the accelerator system driving wheel is connected to the output end of the first reducer.

[0009] Among them, the CT system rotating bracket driving module includes a CT driving system large wheel, a CT system driving component and a CT system driving small wheel. The CT system rotating bracket is fixedly connected to the CT driving system large wheel, the CT system driving small wheel is rotatably arranged on the fixed bracket, and the CT system driving component is respectively attached to the outer side walls of the CT driving system large wheel and the CT system driving small wheel.

[0010] Among them, the CT system rotating bracket driving module also includes a second motor and a second reducer, the second motor is fixedly connected to the fixed bracket, the second reducer is connected to the output end of the second motor, and the CT system driving wheel is connected to the output end of the second reducer.

[0011] The utility model discloses a linear accelerator with integrated imaging equipment, wherein the CT system comprises a CT detector, an electronic field imager, a CT tube, and a CT collimator, and the linear accelerator system comprises an accelerator treatment head and an accelerator multi-leaf grating, wherein the CT detector and the accelerator treatment head are integrated on the fixed bracket, so that the CT ray source surface and the linear accelerator ray source surface are designed to be in the same plane, and the CT component and the linear accelerator component are coaxially rotated through the accelerator system bearing, the CT system bearing, the accelerator system rotating bracket driving module and the CT system rotating bracket driving module, the CT system is arranged in the inner ring, and the linear accelerator system is arranged in the outer ring. Through this design method, the CT system and the linear accelerator system radiation source are designed to be in the same plane, so as to achieve the purpose of coaxial rotation and coplanar diagnosis and treatment of the CT system and the linear accelerator system, high-speed rotation imaging of the CT system, and slow rotation treatment of the linear accelerator system; and the CT system and the linear accelerator radiation source are coplanar and located on the front side of the fixed bracket (close to the bed side), which can greatly reduce the design length of the bed and the bed board to save costs (the farther the radiation source plane is from the treatment bed, the longer the treatment bed needs to be designed, the longer the length of the bed board will be, and the higher the cost will be). After the length of the bed board is reduced, the sagging amount of the bed board is greatly reduced to better meet the regulations and treatment accuracy requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural front view of the linear accelerator of the utility model with integrated imaging equipment.

[0014] Figure 2 It is a structural rear view of the linear accelerator of the utility model with integrated imaging equipment.

[0015] Figure 3 It is a structural cross-sectional view of the linear accelerator of the integrated imaging device of the utility model.

[0016] 101- accelerator treatment head, 102- accelerator multi-leaf grating, 103- fixed bracket, 104- accelerator system rotating bracket, 105- CT system rotating bracket, 106- CT detector, 107- electronic portal imager, 108- accelerator system rotating bracket drive module, 109- CT system rotating bracket drive module, 110- CT tube, 111- CT collimator, 112- accelerator system bearing, 113- CT system bearing, 1081- accelerator drive system large wheel, 1082- accelerator system drive component, 1083- accelerator system drive small wheel, 1091- CT drive system large wheel, 1092- CT system drive component, 1093- CT system drive small wheel. DETAILED DESCRIPTION

[0017] See also Figure 1 to Figure 3 ,in Figure 1 This is a front view of the structure of a linear accelerator with integrated imaging equipment. Figure 2 This is the rear view of the structure of the linear accelerator with integrated imaging equipment. Figure 3 It is a structural cross-sectional view of a linear accelerator with integrated imaging equipment.

[0018] The utility model provides a linear accelerator with integrated imaging equipment, including an accelerator treatment head 101, an accelerator multi-leaf grating 102, a fixed bracket 103, an accelerator system rotating bracket 104, a CT system rotating bracket 105, a CT detector 106, an electronic portal imager 107, an accelerator system rotating bracket driving module 108, a CT system rotating bracket driving module 109, a CT tube 110, a CT collimator 111, an accelerator system bearing 112 and a CT system bearing 113, wherein the accelerator system bearing 112 is respectively connected to the fixed bracket 103 and the accelerator system rotating bracket 104 and the CT system rotating bracket 105. 4, the accelerator treatment head 101, the accelerator multi-leaf grating 102 and the electronic portal imager 107 are respectively fixedly connected to the accelerator system rotating bracket 104, the accelerator system rotating bracket driving module 108 and the CT system rotating bracket driving module 109 are respectively arranged on the fixed bracket 103, the CT system bearing 113 is respectively connected to the fixed bracket 103 and the CT system rotating bracket 105, and the CT detector 106, the CT tube 110, and the CT collimator 111 are respectively arranged on the outside of the CT system rotating bracket 105.

[0019] In this embodiment, the CT detector 106 and the accelerator treatment head 101 are integrated on the fixed bracket 103, so that the CT ray source surface and the linear accelerator ray source surface are designed to be in the same plane, and the CT component and the linear accelerator component are coaxially rotated through the accelerator system bearing 112, the CT system bearing 113, the accelerator system rotating bracket driving module 108 and the CT system rotating bracket driving module 109, and the CT system is arranged in the inner ring and the linear accelerator system is arranged in the outer ring. The CT system and the linear accelerator are designed to be in the same plane, so as to achieve the purpose of coaxial rotation and coplanar diagnosis and treatment of the CT system and high-speed rotation imaging of the CT system and slow rotation treatment of the linear accelerator system; and the CT system and the linear accelerator radiation source are coplanar and located at the front side of the fixed bracket 103 (close to the bed side), which can greatly reduce the design length of the bed and the bed board to save costs (the farther the radiation source plane is from the treatment bed, the longer the treatment bed needs to be designed, the longer the length of the bed board will be, and the higher the cost will be). After the length of the bed board is reduced, the sagging amount of the bed board is greatly reduced to better meet the regulations and treatment accuracy requirements.

[0020] Furthermore, the accelerator system rotating bracket driving module 108 includes an accelerator driving system large wheel 1081, an accelerator system driving component 1082 and an accelerator system driving small wheel 1083, the accelerator system rotating bracket 104 is fixedly connected to the accelerator system bearing 112, the accelerator driving system large wheel 1081 is fixedly connected to the fixed bracket 103, the accelerator system driving small wheel 1083 is rotatably provided on the accelerator system rotating bracket 104, and the accelerator system driving component 1082 is respectively attached to the outer side walls of the accelerator driving system large wheel 1081 and the accelerator system driving small wheel 1083.

[0021] Furthermore, the accelerator system rotating bracket driving module 108 also includes a first motor and a first reducer, the first motor is fixedly connected to the fixed bracket 103, the first reducer is connected to the output end of the first motor, and the accelerator system driving wheel 1083 is connected to the output end of the first reducer.

[0022] In this embodiment, the first motor and the first reducer cooperate to drive the accelerator system driving small wheel 1083 to rotate. The accelerator system driving component 1082 can be a chain and a belt. Under the rotation of the accelerator system driving small wheel 1083, the accelerator system driving component 1082 drives the accelerator driving system large wheel 1081 to rotate.

[0023] Furthermore, the CT system rotating support driving module 109 includes a CT driving system large wheel 1091, a CT system driving component 1092 and a CT system driving small wheel 1093. The CT system rotating support 105 is fixedly connected to the CT driving system large wheel 1091. The CT system driving small wheel 1093 is rotatably provided on the fixed support 103. The CT system driving component 1092 is respectively attached to the outer side walls of the CT driving system large wheel 1091 and the CT system driving small wheel 1093.

[0024] Furthermore, the CT system rotating support driving module 109 also includes a second motor and a second reducer, the second motor is fixedly connected to the fixed support 103, the second reducer is connected to the output end of the second motor, and the CT system driving wheel 1093 is connected to the output end of the second reducer.

[0025] In this embodiment, the second motor and the second reducer cooperate to drive the CT system driving small wheel 1093. The CT system driving member 1092 can be a chain and a belt. Under the rotation of the CT system driving small wheel 1093, the CT system driving member 1092 drives the CT driving system large wheel 1091 to rotate.

[0026] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A linear accelerator with integrated imaging equipment, characterized in that: The invention comprises an accelerator treatment head, an accelerator multi-leaf grating, a fixed support, an accelerator system rotating support, a CT system rotating support, a CT detector, an electronic portal imager, an accelerator system rotating support drive module, a CT system rotating support drive module, a CT tube, a CT collimator, an accelerator system bearing and a CT system bearing. The accelerator system bearing is respectively connected to the fixed support and the accelerator system rotating support. The accelerator treatment head, the accelerator multi-leaf grating and the electronic portal imager are respectively fixedly connected to the accelerator system rotating support. The fixed support is respectively provided with the accelerator system rotating support drive module and the CT system rotating support drive module. The CT system bearing is respectively connected to the fixed support and the CT system rotating support. The CT detector, the CT tube and the CT collimator are respectively arranged on the outside of the CT system rotating support.

2. The linear accelerator with integrated imaging device according to claim 1, characterized in that: The accelerator system rotating bracket driving module includes an accelerator driving system large wheel, an accelerator system driving component and an accelerator system driving small wheel. The accelerator system rotating bracket is fixedly connected to the accelerator system bearing, the accelerator driving system large wheel is fixedly connected to the fixed bracket, the accelerator system driving small wheel is rotatably arranged on the accelerator system rotating bracket, and the accelerator system driving component is respectively attached to the outer side walls of the accelerator driving system large wheel and the accelerator system driving small wheel.

3. The linear accelerator with integrated imaging device according to claim 2, characterized in that: The accelerator system rotating bracket driving module also includes a first motor and a first reducer, the first motor is fixedly connected to the fixed bracket, the first reducer is connected to the output end of the first motor, and the accelerator system driving wheel is connected to the output end of the first reducer.

4. The linear accelerator with integrated imaging device according to claim 1, characterized in that: The CT system rotating support driving module includes a CT driving system large wheel, a CT system driving component and a CT system driving small wheel. The CT system rotating support is fixedly connected to the CT driving system large wheel, the CT system driving small wheel is rotatably arranged on the fixed support, and the CT system driving component is respectively attached to the outer side walls of the CT driving system large wheel and the CT system driving small wheel.

5. The linear accelerator with integrated imaging device according to claim 4, characterized in that: The CT system rotating support driving module also includes a second motor and a second reducer, the second motor is fixedly connected to the fixed support, the second reducer is connected to the output end of the second motor, and the CT system driving wheel is connected to the output end of the second reducer.

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