CN202136702U - Homologous dual-energy IGRT (image guided radiation therapy) medical electronic linear accelerator - Google Patents
Homologous dual-energy IGRT (image guided radiation therapy) medical electronic linear accelerator Download PDFInfo
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- CN202136702U CN202136702U CN201120214558U CN201120214558U CN202136702U CN 202136702 U CN202136702 U CN 202136702U CN 201120214558 U CN201120214558 U CN 201120214558U CN 201120214558 U CN201120214558 U CN 201120214558U CN 202136702 U CN202136702 U CN 202136702U
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Abstract
The utility model relates to a medical device for tumor radiotherapy, in particular to a homologous dual-energy IGRT (image guided radiation therapy) medical electronic linear accelerator which is characterized in that an accelerating tube is vertically installed and connected with a moving target below the accelerating tube; an energy switch is arranged on the accelerating tube; and the moving target is provided with an X-ray heavy metal target and a low atomic number target that are connected with a drive mechanism of the moving target. In the utility model, the energy switch reduces electron beam energy generated by the accelerating tube, and electron beams impact the low atomic number target to generate more characteristics of a low-energy component beam, so as to obtain X-rays with high-definition portal imaging; and the accelerator has the characteristics that the mode conversion is easy, the accelerator is homologous, economical and reliable, the beams are stable; the images are clear, and the clinical use is simple and convenient, etc.
Description
Technical field
This utility model relates to a kind of tumour radiotherapy and uses medical apparatus and instruments, is specifically related to a kind of homology dual intensity IGRT medical electronic linear accelerator.
Background technology
A radiocurable key request is daily accurately treatment pendulum position.The research report, the systematic error that reaches at random of daily treatment pendulum position can be up to 6mm.The existing clinical method that addresses this problem has three kinds, is respectively film checking, electronics launched field image system (EPID), KV level image guidance system.These three kinds of methods respectively have characteristics, and the film checking is because film rinsing is consuming time more with analysis, and efficient is low, so real-time is poor, the patient is moved once more in this process easily; EPID directly gathers the quantity of X-rays X that MV level ray (being generally 6MV) penetrates human body; Utilize computer generated image; This method has treatment and checking radiographic source position identical (being homology), the real-time advantage of gathering, quantization parameter also can be provided; Shortcoming is image clear inadequately (on image-forming principle, because different tissues damping capacity difference is less, the quality of image that MV level X line is gathered is congenital in the KV level); The advantage of KV level image guidance system is to utilize other additional KV x-ray apparatus to be carried out to picture; Advantage with clear picture; But owing to increase by a cover KV level ray system, exist investment bigger, it is more to take the working place; And treatment with verify radiographic source position (non-homogeneous) inequality, shortcoming such as can not directly verify.On development trend, EPID, KV level image guidance system replace the film checking gradually, but these two kinds of technology are all not mature enough.
U.S. Tomotherapy system utilizes the method that an accelerating tube switches 3MeV/6MeV output to be embodied as respectively picture and treatment.Say from physics and how much cardinal principle; " coaxial " structure of having only this radioactive source of Tomotherapy; Could guarantee to greatest extent to treat space coordinates and imaging space coordinate concordance, reduce systematic error; Therefore can only accomplish 3MeV at present, the product of KV level ray can't be provided, image quality is also good inadequately.
Tsing-Hua University is at a kind of homology two-beam accelerating tube of development recently, and it utilizes accelerating tube to be in normal mode of operation, obtains the treatment of 6MV energy and uses X ray; Utilize a kind of off resonance state (non-normal working), obtain the low X ray of energy, carry out the launched field checking and use; But this unstable working condition; Bring differing of beam specification stable, need further research, also can't get into clinical practice.
The utility model content
Deficiency according to above prior art; This utility model technical problem to be solved is: a kind of homology dual intensity IGRT medical electronic linear accelerator is provided; Have pattern conversion easily, homology, beam stabilization, clear picture, economic and reliable, clinical characteristics such as easy to use; This system not only can produce MV level expansion, two kinds of beams of expansion not, also can produce the low energy beams of the usefulness that is more suitable for forming images.
The described a kind of homology dual intensity IGRT medical electronic linear accelerator of this utility model; Comprise base; Base is provided with fixed frame, and a side of fixed frame is provided with rotary frame, is disposed with treatment head and electronics launched field device for image on the rotary frame from top to bottom; Be disposed with accelerating tube, running target, example of primary collimator, expansion rotating disk, ionization chamber, illuminator, wild lamp and secondary collimator from top to bottom in the treatment head; Accelerating tube is uprightly installed, and is connected with the running target of below, and accelerating tube is provided with energy switch; Running target is provided with X ray heavy metal target and low atomic number target, and this X ray heavy metal target all is connected with the driving mechanism of running target with the low atomic number target.
Wherein, the driving mechanism of running target can be delivered to X ray heavy metal target and low atomic number target on the course of the beam respectively.
Described low atomic number target is preferably the carbon target; Center designs such as fixed frame and rotary frame preferably adopt, rotary frame can be around centrage 360 degree rotations; The expansion rotating disk be provided with treatment with X ray expansion device, verify that with X ray expansion device and pattern room, the expansion device is not promptly installed in the pattern room in the relevant position; The secondary collimator below preferably is equipped with multi-diaphragm collimator in the treatment head; But electronics launched field device for image is provided with the detector of parallel motion.
The work process of this utility model comprises checking and treatment, and concrete work process is following:
After accomplishing patient treatment pendulum position; Begin the checking work of pendulum position: earlier with the detector of electronics launched field device for image see off, parallel motion to beam, energy switch inserts then, the accelerating cavity row microwave electric field of accelerating tube bottom realizes short circuit; No longer has acceleration capacity; Thereby can obtain low-energy electron beam, the accelerating cavity that this energy switch is provided with the closer to top, beam energy is low more.Running target is driven by driving mechanism the X ray heavy metal target is shifted out course of the beam, and the low atomic number target is moved in the course of the beam, and electron beam bump low atomic number target can produce the more X ray of low-energy component.Because the reduction of the beam energy that energy switch brings and the dual function of low atomic number target, the X ray average energy of generation reduces, and low-energy component is more.The expansion rotating disk will be verified the course of the beam that send with X ray expansion device by driven by motor; The beam uniformity is repaired adjusting, after ray penetrates the patient exposure position, accepted by detector; Utilize computer generated image; Obtain the real-time launched field authentication image of homology, the DRR figure that produces with treatment planning systems compares, and accomplishes the launched field checking.Utilize normotopia and side position two width of cloth authentication image, the DRR figure (normotopia and side position) that produces with treatment planning systems compares, and accomplishes the pendulum position checking of IGRT (image-guided).If the biased difference of the pendulum that computer provides exceeds the error limit value of setting,, accomplish error correction through moving of therapeutic bed, multi-diaphragm collimator.
When needing the patient exposure treatment: earlier the detector of electronics launched field device for image is regained; Avoid unnecessary ray direct irradiation, energy switch is extracted then, and all accelerating cavities of accelerating tube are set up the microwave accelerating field; All recover acceleration capacity, produce the electron beam of MV level energy.Running target is driven by driving mechanism the low atomic number target is shifted out course of the beam; The X ray heavy metal target is moved in the course of the beam; Electron beam impinging x-ray heavy metal target; X ray is used in the treatment that produces MV level energy, and the expansion rotating disk will be treated the course of the beam that send with X ray expansion device by driven by motor, and the beam uniformity is repaired adjusting.Non-if desired expansion beam, expansion rotating disk will be treated with X ray expansion device by driven by motor and shifted out course of the beam, course of the beam aimed in the pattern room on the expansion rotating disk got final product.
The beneficial effect that this utility model had is homology dual intensity IGRT medical electronic linear accelerator; Realize that through energy switch accelerating tube produces the reduction of beam energy; Utilize electron beam bump low atomic number target to produce the characteristic of more low-energy component beams; Obtain the launched field X ray clearly that forms images, have the pattern conversion easily, homology, beam stabilization, clear picture, economic and reliable, clinical characteristics such as easy to use.
Description of drawings
Fig. 1 is the structural representation of this utility model;
Fig. 2 is 4 a structural representation among Fig. 1;
Fig. 3 is 8 a structural representation among Fig. 2;
Fig. 4 is 11 a structural representation among Fig. 2;
Among the figure, 1, base 2, fixed frame 3, rotary frame 4, treatment 5, electronics launched field device for image 6, therapeutic bed 7, accelerating tube 8, running target 9, example of primary collimator 10, ionization chamber 11, expansion rotating disk 12, illuminator 13, wild lamp 14, secondary collimator 15, multi-diaphragm collimator 16, energy switch 17, X ray heavy metal target 18, low atomic number target 19, driving mechanism 20, treatment with X ray expansion device 21, verify with X ray expansion device 22, pattern room 23, detector.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is done and to be further described.
As shown in Figure 1; The described a kind of homology dual intensity IGRT medical electronic linear accelerator of this utility model comprises base 1, and base 1 is provided with fixed frame 2; One side of fixed frame 2 is provided with rotary frame 3; Be disposed with treatment 4 and electronics launched field device for image 5 on the rotary frame 3 from top to bottom, be disposed with accelerating tube 7, running target 8, example of primary collimator 9, expansion rotating disk 11, ionization chamber 10, illuminator 12, wild lamp 13 and secondary collimator 14 from top to bottom in the treatment 4, accelerating tube 7 is uprightly installed; Be connected with the running target 8 of below; Accelerating tube 7 is provided with energy switch 16, and running target 8 is provided with X ray heavy metal target 17 and low atomic number target 18, and this X ray heavy metal target 17 all is connected with the driving mechanism 19 of running target 8 with low atomic number target 18.
Wherein, the driving mechanism 19 of running target 8 can be delivered to X ray heavy metal target 17 and low atomic number target 18 on the course of the beam respectively.
Described low atomic number target 18 adopts the carbon target; The design of centers such as fixed frame 2 and rotary frame 3 employings, rotary frame 3 can be around centrage 360 degree rotations; Expansion rotating disk 11 be provided with treatment with X ray expansion device 20, verify that with X ray expansion device 21 and pattern room 22, the expansion device is not promptly installed in pattern room 22 in the relevant position; Treatment 4 interior secondary collimator 14 below are equipped with multi-diaphragm collimator 15; But electronics launched field device for image 5 is provided with the detector 23 of parallel motion.
The work process of this utility model comprises checking and treatment, and concrete work process is following:
After accomplishing patient treatment pendulum position; Begin the checking work of pendulum position: earlier with the detector 23 of electronics launched field device for image 5 see off, parallel motion is to beam; Energy switch 16 inserts then; The accelerating cavity row microwave electric field of accelerating tube 7 bottoms realizes short circuit, no longer has acceleration capacity, thereby can obtain low-energy electron beam.Running target 8 is driven by driving mechanism 19 X ray heavy metal target 17 is shifted out course of the beam, and low atomic number target 18 is moved in the course of the beam, and electron beam bump low atomic number target 18 can produce the more X ray of low-energy component.Because the reduction of the beam energy that energy switch 16 brings and the dual function of low atomic number target 18, the X ray average energy of generation reduces, and low-energy component is more.Expansion rotating disk 11 will be verified the course of the beam that send with X ray expansion device 21 by driven by motor; The beam uniformity is repaired adjusting, after ray penetrates the patient exposure position, accepted by detector 23; Utilize computer generated image; Obtain the real-time launched field authentication image of homology, the DRR figure that produces with treatment planning systems compares, and accomplishes the launched field checking.Utilize normotopia and side position two width of cloth authentication image, the DRR figure (normotopia and side position) that produces with treatment planning systems compares, and accomplishes the pendulum position checking of IGRT (image-guided).If the biased difference of the pendulum that computer provides exceeds the error limit value of setting,, accomplish error correction through moving of therapeutic bed 6, multi-diaphragm collimator 15.
When needing the patient exposure treatment: earlier the detector 23 of electronics launched field device for image 5 is regained; Avoid unnecessary ray direct irradiation, energy switch 16 is extracted then, and all accelerating cavities of accelerating tube 7 are set up the microwave accelerating field; All recover acceleration capacity, produce the electron beam of MV level energy.Running target 8 is driven by driving mechanism 19 low atomic number target 18 is shifted out course of the beam; X ray heavy metal target 17 is moved in the course of the beam; Electron beam impinging x-ray heavy metal target 17; X ray is used in the treatment that produces MV level energy, and expansion rotating disk 11 will be treated the course of the beam that send with X ray expansion device 20 by driven by motor, and the beam uniformity is repaired adjusting.Non-if desired expansion beam, expansion rotating disk 11 will be treated with X ray expansion device 20 by driven by motor and shifted out course of the beam, course of the beam aimed in the pattern room on the expansion rotating disk 11 22 got final product.
This utility model is realized the reduction that accelerating tube 7 produces beam energy through energy switch 16; Utilize electron beam bump low atomic number target 18 to produce the characteristic of more low-energy component beams; Obtain the launched field X ray clearly that forms images, have the pattern conversion easily, homology, beam stabilization, clear picture, economic and reliable, clinical characteristics such as easy to use.
Claims (6)
1. homology dual intensity IGRT medical electronic linear accelerator; Comprise base; Base is provided with fixed frame, and a side of fixed frame is provided with rotary frame, is disposed with treatment head and electronics launched field device for image on the rotary frame from top to bottom; Be disposed with accelerating tube, running target, example of primary collimator, expansion rotating disk, ionization chamber, illuminator, wild lamp and secondary collimator from top to bottom in the treatment head; It is characterized in that accelerating tube uprightly installs, be connected that accelerating tube is provided with energy switch with the running target of below; Running target is provided with X ray heavy metal target and low atomic number target, and this X ray heavy metal target all is connected with the driving mechanism of running target with the low atomic number target.
2. homology dual intensity IGRT medical electronic linear accelerator according to claim 1 is characterized in that the low atomic number target is the carbon target.
3. homology dual intensity IGRT medical electronic linear accelerator according to claim 1 is characterized in that center designs such as fixed frame and rotary frame employing, and rotary frame can be around centrage 360 degree rotations.
4. homology dual intensity IGRT medical electronic linear accelerator according to claim 1, it is characterized in that the expansion rotating disk be provided with treatment with X ray expansion device, verify with X ray expansion device and pattern room.
5. homology dual intensity IGRT medical electronic linear accelerator according to claim 1 is characterized in that the secondary collimator below is equipped with multi-diaphragm collimator in the treatment head.
6. homology dual intensity IGRT medical electronic linear accelerator according to claim 1, but it is characterized in that electronics launched field device for image is provided with the detector of parallel motion.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201120214558U CN202136702U (en) | 2011-06-23 | 2011-06-23 | Homologous dual-energy IGRT (image guided radiation therapy) medical electronic linear accelerator |
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| CN201120214558U CN202136702U (en) | 2011-06-23 | 2011-06-23 | Homologous dual-energy IGRT (image guided radiation therapy) medical electronic linear accelerator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102256434A (en) * | 2011-06-23 | 2011-11-23 | 山东新华医疗器械股份有限公司 | Same-source double-energy medical electron linear accelerator for image guided radiation therapy (IGRT) |
| CN105188250A (en) * | 2015-09-09 | 2015-12-23 | 上海联影医疗科技有限公司 | Target component and linear accelerator with target component |
| CN105307376A (en) * | 2015-09-05 | 2016-02-03 | 刘洋 | Medical electron linear accelerator |
| CN109513116A (en) * | 2017-09-18 | 2019-03-26 | 胡逸民 | A kind of ray intensity modulated therapy device |
| CN109663221A (en) * | 2017-10-13 | 2019-04-23 | 苏州雷泰医疗科技有限公司 | A kind of the pendulum position method and apparatus and accelerator therapy device of artificial intelligence |
-
2011
- 2011-06-23 CN CN201120214558U patent/CN202136702U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102256434A (en) * | 2011-06-23 | 2011-11-23 | 山东新华医疗器械股份有限公司 | Same-source double-energy medical electron linear accelerator for image guided radiation therapy (IGRT) |
| CN105307376A (en) * | 2015-09-05 | 2016-02-03 | 刘洋 | Medical electron linear accelerator |
| CN105188250A (en) * | 2015-09-09 | 2015-12-23 | 上海联影医疗科技有限公司 | Target component and linear accelerator with target component |
| CN109513116A (en) * | 2017-09-18 | 2019-03-26 | 胡逸民 | A kind of ray intensity modulated therapy device |
| CN109663221A (en) * | 2017-10-13 | 2019-04-23 | 苏州雷泰医疗科技有限公司 | A kind of the pendulum position method and apparatus and accelerator therapy device of artificial intelligence |
| CN109663221B (en) * | 2017-10-13 | 2021-02-12 | 苏州雷泰医疗科技有限公司 | Artificial intelligence's pendulum position device and accelerator treatment device |
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Granted publication date: 20120208 |
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