CN103285528A - Radiation therapy equipment and radiotherapy system therewith - Google Patents
Radiation therapy equipment and radiotherapy system therewith Download PDFInfo
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- CN103285528A CN103285528A CN2013101879219A CN201310187921A CN103285528A CN 103285528 A CN103285528 A CN 103285528A CN 2013101879219 A CN2013101879219 A CN 2013101879219A CN 201310187921 A CN201310187921 A CN 201310187921A CN 103285528 A CN103285528 A CN 103285528A
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Abstract
The invention discloses radiation therapy equipment and a radiotherapy system therewith. The radiation therapy equipment comprises a fixed machine, a swivel bracket, a ray source, a main collimator and a multi-leaf collimator, wherein the swivel bracket can be rotatably arranged on the fixed machine around the central axis of the swivel bracket, the main collimator is disposed on the ray source arranged on the swivel bracket, and the multi-leaf collimator is fixed on the fixed machine. The multi-leaf collimator, the ray source and the main collimator are positioned on the same side of the swivel bracket, wherein the ray source and the main collimator are located outside the multi-leaf collimator in the radial direction. The multi-leaf collimator comprises a plurality of vane groups arranged in a circular around the central axis, each vane group comprises two vanes relative to each other in the direction parallel to the central axis, and the two vanes are capable of relatively moving in the direction parallel to the central axis. The multi-leaf collimator of the radiation therapy equipment can be in a quasi-static mode, and effectiveness and efficiency of the treatment of the radiation therapy equipment can be greatly improved.
Description
Technical field
The present invention relates to field of medical, especially relate to a kind of radiotherapy equipment and have its radiotherapy system.
Background technology
In the treating malignant tumor field, the main treatment means that adopts comprises operation, radiation and chemotherapy at present.The ideal goal of tumor radiotherapy is to be that the tumor target dose satisfies the treatment plan requirement, and normal structure is avoided the dosage injury simultaneously.But because the intrinsic physical attribute of ray radiotherapy, adjacent tissue unavoidably suffers roentgendosis.In radiotherapy equipment constantly develops, the appearance of Intensity Modulation Radiated Therapy (IMRT), changed the bottleneck that in the past adopts the conformal therapy technology, increased the clinical suitable disease scope of equipment, improved the tumour radiotherapy precision, make radiotherapy apparatus have better generality, can obtain higher therapeutic efficiency and therapeutic effect clinically.Its main thought of intensity modulated radiation therapy technology is, by the intensity of multi-diaphragm collimator modulation incident beam, throws the according to the facts dosage of ray accumulation now from different crevice projection angles, improves the space conformal degree of beam and tumor target area, avoids critical tissue's organ simultaneously.Multi-diaphragm collimator directly determines the therapeutic effect for the treatment of plan as the critical component of intensity modulated radiation therapy.
Usually the multi-diaphragm collimator that adopts in the clinical radiotherapy apparatus is made of many groups of laminar blades, and blade is driven by driving mechanism and realizes moving back and forth along fixation locus.Multi-diaphragm collimator blade movement rule is calculated by treatment planning systems in advance, and in therapeutic process, blade is execution chronologically, realizes beam modulation and beam throwing photograph.
At present, traditional multi-diaphragm collimator adopts the form of directly carrying additionally, namely be fixedly mounted under the radiographic source, at radiographic source in the fixed rack rotary course, multi-diaphragm collimator and radiographic source rotate synchronously, and keep relative position constant, on this basis, control multi-diaphragm collimator blade movement speed and change in location control beam are thrown photograph, spatially form the required dosage accumulation.
But relative radiographic source position, this direct hanging type multi-diaphragm collimator installation site is nearer, and is thinner relatively at equal resolution requirement lower blade, increased the processing of leaves precision, causes processing difficulties.And directly hanging type multi-diaphragm collimator rotary part quality is big, and the reciprocating motion of self had increased difficulty in computation when equipment Rapid Dose Calculation in the treatment plan formulation process need consider that blade is followed the frame rotation.Simultaneously, owing to the difference of exercise performance between each blade of multi-diaphragm collimator, be easy to generate the deviation of instruction movement velocity and position and actual motion, reduced space dosage and thrown according to precision.In addition, because blade is with frame Spin Control relative complex, the driver element power control signal all needs by the electric brush slip ring transmission, so equipment dependability and stability depends on the quality of electric brush slip ring greatly, has increased equipment cost and complexity.In addition, multi-diaphragm collimator is made up of high density tungsten alloy, and it is bigger to carry additionally quality, hinders the lifting of rotary frame dynamic property, is difficult to satisfy discontinuous rotation low-angle intensity modulated radiation therapy clinical demand under the specific tumor disease.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.
For this reason, one object of the present invention is to propose a kind of radiotherapy equipment, and the multi-diaphragm collimator of this radiotherapy equipment can be in the quasistatic mode of operation, thereby can improve therapeutic effect and the efficient of radiotherapy equipment greatly.
Another object of the present invention is to propose a kind of radiotherapy system with above-mentioned radiotherapy equipment.
Radiotherapy equipment according to first aspect present invention comprises: fixing board; Runing rest, described runing rest is located on the described fixedly board rotationally around its central axis; Radiographic source, described radiographic source are located on the described runing rest; Main collimator, described main collimator are located at the beam that is used for the X ray of described radiographic source emission is modulated into reservation shape on the described radiographic source; Multi-diaphragm collimator, described multi-diaphragm collimator is installed on the described fixedly board, described multi-diaphragm collimator, described radiographic source and described main collimator are positioned at the same side of described runing rest and described radiographic source and described main collimator in the outside that radially is positioned at described multi-diaphragm collimator of described runing rest, described multi-diaphragm collimator comprises a plurality of vane group, described a plurality of vane group is arranged in annular around described central axis, and each vane group includes and is being parallel to two blades respect to one another on the direction of described central axis, and described two blades are being parallel to the distance that can relatively move on the direction of described central axis to change between described two blades.
Radiotherapy equipment according to the embodiment of the invention, overcome the technical bottleneck that direct hanging type multi-diaphragm collimator brings to a certain extent, multi-diaphragm collimator of the present invention is fixedly mounted on fixedly on the board, thereby can alleviate for example inertia of runing rest of rotary part, under equal driving force, can obtain rotary speed and the acceleration of higher runing rest, improved radiocurable efficient, the blade quasistatic is thrown according to mode and has been improved the Rapid Dose Calculation precision, thereby brushless slip ring structure has increased the reliability and stability of equipment.Radiotherapy equipment of the present invention also can satisfy under the specific tumor disease, the clinical treatment demand of discontinuous rotation low-angle Intensity Modulation Radiated Therapy (IMRT).
And, radiotherapy equipment of the present invention has been realized separating of radiographic source and multi-diaphragm collimator, multi-diaphragm collimator is fixed on does not fixedly follow the radiographic source rotation and keeps relatively independent on the board, simplified the difficulty of control greatly, thereby further improved therapeutic effect.
In addition, the novel multi-diaphragm collimator that radiotherapy equipment of the present invention adopts, except working in static the throwing according under the pattern, can also be in conjunction with the dynamic slippage window intensity modulated radiation therapy technology implementation treatment of clinical normal employing, the in pairs relative serial movement of blade this moment, each blade velocity by vane group and the difference of position realize the modulation of dose intensity.In addition, novel multi-diaphragm collimator of the present invention also can work under fault radiation therapeutic and the spiral-fault radiation therapeutic pattern, this moment, blade was under the switching mode, in implementing the radiotherapy process, pass through control individual blade on-off time ratio in the treatment arc, realize that this blade throwing according to the modulation of dose intensity grade in the Ziye, realizes the tomography intensity modulated radiation therapy.
In addition, according to radiotherapy equipment of the present invention, can also have following additional technical feature:
In one embodiment of the invention, described radiotherapy equipment also comprises driven unit, and described driven unit links to each other to drive described runing rest with described runing rest and rotates.
In one embodiment of the invention, described driven unit comprises motor and links to each other with the outfan of described motor and be used for driving described runing rest pivoted pulley drive mechanism.
In one embodiment of the invention, described driven unit comprises motor and links to each other with the outfan of described motor and be used for driving a pair of gear pair that described runing rest rotates.
In one embodiment of the invention, described radiotherapy equipment also comprises installing rack, and described installing rack comprises:
Fixed part, described fixed part are fixed on the described fixedly board; And
The body of tubular, described body is located at top and the central axis of described body and the central axes of described runing rest of described fixed part, described body is made by the material of transmissive X ray, and wherein said multi-diaphragm collimator is set in the outside of described body.
In one embodiment of the invention, described a plurality of vane group has the block of maskable X ray in the filling between uniform parts and adjacent two vane group of making progress in week.
In one embodiment of the invention, described block is a kind of in tungsten piece, tungsten alloy piece, lead or the metal piece.
In one embodiment of the invention, described main collimator can be modulated into fan beam or conical beam with the X ray of described radiographic source emission.
In one embodiment of the invention, described radiotherapy equipment also comprises a plurality of drive motors, and described a plurality of drive motors link to each other with each blade correspondingly respectively and move along the direction that is parallel to described central axis to drive respective vanes.
Radiotherapy system according to second aspect present invention comprises: the radiotherapy equipment of above-mentioned first aspect according to the present invention; And therapeutic bed, but an end of described therapeutic bed extend in the multi-diaphragm collimator of described radiotherapy equipment and with respect to described multi-diaphragm collimator top to bottom, left and right, front and rear and moves.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the front perspective view of radiotherapy system according to an embodiment of the invention;
Fig. 2 is the rear perspective view of radiotherapy system according to an embodiment of the invention;
Fig. 3 is the sketch map of vane group and drive motors;
Fig. 4 is that radiotherapy system carries out the fundamental diagram of tumour radiotherapy process according to an embodiment of the invention.
Description of reference numerals:
Fixedly board 1;
Installing rack 7, fixed part 71, body 72;
Launched field 81, Ziye 82.
The specific embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical or similar label is represented identical or similar elements or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center "; " vertically "; " laterally "; " length "; " width "; " thickness ", " on ", D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", close the orientation of indications such as " counterclockwise " or position is based on orientation shown in the drawings or position relation, only be that the present invention for convenience of description and simplification are described, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless clear and definite concrete restriction is arranged in addition.
In the present invention, unless clear and definite regulation and restriction are arranged in addition, broad understanding should be done in terms such as term " installation ", " linking to each other ", " connection ", " fixing ", for example, can be fixedly connected, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand above-mentioned term concrete implication in the present invention as the case may be.
In the present invention, unless clear and definite regulation and restriction are arranged in addition, first feature second feature it " on " or D score can comprise that first and second features directly contact, can comprise that also first and second features are not directly contacts but by the contact of the additional features between them.And, first feature second feature " on ", " top " and " above " comprise first feature directly over second feature and oblique upper, or only represent that the first characteristic level height is higher than second feature.First feature second feature " under ", " below " and " below " comprise first feature under second feature and tiltedly, or only represent that the first characteristic level height is less than second feature.
Below with reference to the radiotherapy equipment 100 of Fig. 1-Fig. 4 description according to the embodiment of the invention, can be used for treating tumor.
As shown in Figure 1, runing rest 2 is on runing rest 2 central axis are located at fixedly board 1 rotationally, for example runing rest 2 can be at a perpendicular internal rotation around its central axis, runing rest 2 and fixedly can be provided with rolling bearing between the board 1, can reduce runing rest 2 like this and the friction when fixedly relatively rotating between the board 1, rolling bearing can upwards be evenly distributed in runing rest 2 week and fixedly between the board 1.Runing rest 2 is preferably formed and is disc, and runing rest 2 can at the uniform velocity rotate around its central axis, certainly also variable-ratio rotation.
As shown in Figure 3 and Figure 4, multi-diaphragm collimator 5 comprises a plurality of vane group 51, a plurality of vane group 51 are arranged in annular around the central axis of runing rest 2, each vane group 51 includes two blades 511 respect to one another on the direction of the central axis that is parallel to runing rest 2, and these two blades 511 can relatively move to change two distances between the blade 511 being parallel on the direction of central axis.Specifically, but to reduce the distance between these two blades 511, perhaps these two blades 511 are in the distance that can move dorsad on the direction of the central axis that is parallel to runing rest 2 to increase between these two blades 511 in move toward one another on the direction of the central axis that is parallel to runing rest 2 for these two blades 511.
Wherein, radiographic source 3 and main collimator 4 turn to one of them vane group 51 directly over before, two blades 511 of this vane group 51 move to the precalculated position so that the part of the X ray of radiographic source 3 emissions then shields to form required Ziye by multi-diaphragm collimator 5 by the gap between these two blades 511, remaining X ray.Need to prove, main collimator 4 and radiographic source 3 just rotate around multi-diaphragm collimator 5 around central axis, therefore here " directly over " refer to: the straight line (can be understood as the extended line of radius) in the axle center by each vane group 51 and multi-diaphragm collimator 5 and the intersection point place of main collimator 4 and radiographic source 3 movement locus, be example with a vane group 51 that is in 9 o'clock direction for example, then this moment, main collimator 4 and radiographic source 3 also were positioned at the 9 o'clock direction of its movement locus, be example with a vane group 51 that is in 6 o'clock direction for another example, then this moment, main collimator 4 and radiographic source 3 also were positioned at the 6 o'clock direction of its movement locus.
Specifically, radiotherapy equipment 100 is when work, runing rest 2 drives radiographic source 3 and main collimator 4 rotates synchronously, the beam of the preliminary modulation back formation required form of the main collimator 4 of X ray process that radiographic source 3 is launched is conical beam for example, when radiographic source 3 and main collimator 4 move to some vane group 51 directly over before, two blades 511 of this vane group 51 are move toward one another or move to the precalculated position dorsad in advance, distance between these two blades 511 is determined, runing rest 2 drive radiographic sources 3 and main collimator 4 move to this vane group 51 directly over the time, X ray can be by the distance between two blades 511 of this vane group 51, remaining X ray is then shielded by multi-diaphragm collimator 5, thereby forms specific Ziye and radiological dose intensity.
When 4 rotations of radiographic source 3 and main collimator were to the next vane group 51, two blades 511 of this vane group 51 also moved to the precalculated position in advance, and namely the distance between these two blades 511 also is certain so that wherein a part of X ray passes through.Namely, two blades 511 of each vane group 51 all moved to the precalculated position in advance before radiographic source 3 and main collimator 4 turn to directly over it, make that the distance between two blades 511 of each vane group 51 is specific, after radiographic source 3 and main collimator 4 moved past directly over this vane group 51, two blades 511 of this vane group 51 moved to next precalculated position.
So repeatedly, main collimator 4 and radiographic source 3 move to one of them vane group 51 above the time, two blades 511 of this vane group 51 move to preposition in advance, after main collimator 4 and radiographic source 3 are removed from the top of this vane group 51, two blades 511 of this vane group 51 move to next precalculated position, the accurate accumulation of final implementation space dosage.
Wherein, need to prove, the precalculated position of two blades 511 motion of each vane group 51 can be that the control system by radiotherapy equipment 100 precomputes, it is the data message that control system can be obtained patient's tumor target area, thereby calculate corresponding treatment plan, for example control runing rest 2 rotating speed, control the motion of two blades 511 of each vane group 51, operation principle about control system has been prior art, and known by those skilled in the art, no longer described in detail here.
And, radiotherapy equipment 100 of the present invention has been realized separating of radiographic source 3 and multi-diaphragm collimator 5, multi-diaphragm collimator 5 is fixed on does not fixedly follow radiographic source 3 rotations and keeps relatively independent on the board 1, simplified the difficulty of control greatly, thereby further improved therapeutic effect.
In addition, the novel multi-diaphragm collimator 5 that radiotherapy equipment 100 of the present invention adopts, except working in static the throwing according under the pattern, can also be in conjunction with the dynamic slippage window intensity modulated radiation therapy technology implementation treatment of clinical normal employing, in pairs blade 511 relative serial movements this moment, the modulation of each blade 511 speed by vane group 51 and the difference realization dose intensity of position.In addition, novel multi-diaphragm collimator 5 of the present invention also can work under fault radiation therapeutic and the spiral-fault radiation therapeutic pattern, this moment, blade 511 was under the switching mode, in implementing the radiotherapy process, pass through control individual blade 511 on-off time ratio in the treatment arc, realize the modulation that this blade 511 is thrown according to dose intensity grade in the Ziye, realize the tomography intensity modulated radiation therapy.
As shown in Figure 2, radiotherapy equipment 100 also comprises driven unit 6, and driven unit 6 links to each other with runing rest 2 and rotates to drive runing rest 2.For example, in one embodiment of the invention, driven unit 6 comprises that motor 61 links to each other with outfan with motor 61 and is used for driving runing rest 2 pivoted pulley drive mechanisms 62.Certainly, the invention is not restricted to this, in another embodiment of the present invention, driven unit 6 comprises that motor 61 links to each other with outfan with motor 61 and is used for driving a pair of gear pair that runing rest 2 rotates.Be understandable that, for other driven unit 6 that can realize driving runing rest 2 rich its central axis rotations, all fall within the scope of protection of the present invention.
As shown in Figure 1, radiotherapy equipment 100 also comprises installing rack 7, and installing rack 7 comprises fixed part 71 and body 72, and installing rack 7 is used for installing and fixing multi-diaphragm collimator 5.Wherein fixed part 71 is fixed on fixedly on the board 1, and for example fixed part 71 can removably be fixed on fixedly on the board 1 by bolt, and fixed part 71 also can be made into integration or adopt the mode of welding integrally welded with fixing board 1 certainly.
As shown in Figure 1, body 72 is tubular, the both ends open that it is axial, body 72 can be located at top and the central axis of body 72 and the central axes of runing rest 2 of fixed part 71, body 72 is made by the material of transmissive X ray, for example body 72 is made of plastics, and wherein multi-diaphragm collimator 5 is set in the outside of body 72.By installing rack 7 is set, can easily multi-diaphragm collimator 5 be fixed on indirectly fixedly on the board 1.
In a preferred embodiment of the invention, a plurality of vane group 51 upwards evenly distribute in week and adjacent two vane group 51 between filling the block of maskable X ray is arranged.In other words as long as, in the preferred embodiment, 51 one-tenth equal angles of a plurality of vane group are distributed as an annular array, and wherein block can be a kind of in tungsten piece, tungsten alloy piece, lead or the metal piece, namely block maskable X ray.
As shown in Figure 3, radiotherapy equipment 100 also comprises a plurality of drive motors 512, and a plurality of drive motors 512 link to each other with each blade 511 correspondingly respectively and move along the direction that is parallel to central axis to drive respective vanes 511.Like this, each motor 61 drives corresponding blade 511 separately and moves, thereby can control the shift position of blade 511 more accurately.
Below with reference to Fig. 1-Fig. 4 operation principle and the process of radiotherapy equipment 100 are according to an embodiment of the invention described simply.
Specifically, the treatment planning systems of radiotherapy equipment 100 can be to radiographic source 3, multi-diaphragm collimator 5 and patient carry out modeling, simulate the distribution of patient's body internal absorbed dose under these radiotherapy equipment 100 particular treatment flow processs by special simulation algorithm (being prior art), its groundwork can comprise following several aspect: at first can obtain the lesions position imaging data by medical imaging equipments such as CT/MRI/PET, this data format is received and handles by treatment planning systems is converted into three-dimensional data, the doctor provides prescribed dose according to this image data and distributes, treatment planning systems carries out the Rapid Dose Calculation analogue simulation according to modeling parameters, after passing through, emulation will generate the single and input control system for the treatment of plan, through control system handle the back generate radiotherapy equipment 100 the therapeutic scheme that should take and implement to instruct, this implements instruction under control system control, by the checking of quality assurance system dosage, can really be applied to tumour radiotherapy at last and control
As shown in Figure 4, radiographic source 3 along direction of rotation (clockwise or counterclockwise) in the central axis rotating process of runing rest 2, ray is modulated into for example conical beam of required form beam through main collimator 4, roentgenization is at multi-diaphragm collimator 5 then, and blade 511 moves to the location of instruction under the driving of respective drive motor 512.For the vane group 51 that constitutes over against two blades 511 of radiographic source 3 in shown in Figure 4, when radiographic source 3 rotation was to this vane group 51, the relative position of two blades 511 in this vane group 51 had determined the Ziye shown in the Ziye 82(frame of broken lines in the launched field 81) shape.
When radiographic source 3 leave along direction of rotation this vane group 51 directly over after, the drive motors 512 of two blades 511 drives these two blades 511 respectively and moves to the next instruction position and wait for.Two of each vane group 51 blades 511 are all worked in this manner in the multi-diaphragm collimator 5, distribute up to tumor dose so repeatedly and satisfy the treatment index, finish therapeutic process.
In the description of this description, concrete feature, structure, material or characteristics that the description of reference term " embodiment ", " some embodiment ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example description are contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete feature, structure, material or the characteristics of description can be with the suitable manner combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: can carry out multiple variation, modification, replacement and modification to these embodiment under the situation that does not break away from principle of the present invention and aim, scope of the present invention is limited by claim and equivalent thereof.
Claims (10)
1. a radiotherapy equipment is characterized in that, comprising:
Fixing board;
Runing rest, described runing rest is located on the described fixedly board rotationally around its central axis;
Radiographic source, described radiographic source are located on the described runing rest;
Main collimator, described main collimator are located at the beam that is used for the X ray of described radiographic source emission is modulated into reservation shape on the described radiographic source;
Multi-diaphragm collimator, described multi-diaphragm collimator is installed on the described fixedly board, described multi-diaphragm collimator, described radiographic source and described main collimator are positioned at the same side of described runing rest and described radiographic source and described main collimator in the outside that radially is positioned at described multi-diaphragm collimator of described runing rest, described multi-diaphragm collimator comprises a plurality of vane group, described a plurality of vane group is arranged in annular around described central axis, and each vane group includes and is being parallel to two blades respect to one another on the direction of described central axis, and described two blades are being parallel to the distance that can relatively move on the direction of described central axis to change between described two blades.
2. radiotherapy equipment according to claim 1 is characterized in that, also comprises driven unit, and described driven unit links to each other to drive described runing rest with described runing rest and rotates.
3. radiotherapy equipment according to claim 2 is characterized in that, described driven unit comprises motor and links to each other with the outfan of described motor and be used for driving described runing rest pivoted pulley drive mechanism.
4. radiotherapy equipment according to claim 2 is characterized in that, described driven unit comprises motor and links to each other with the outfan of described motor and be used for driving a pair of gear pair that described runing rest rotates.
5. radiotherapy equipment according to claim 1 is characterized in that, also comprises installing rack, and described installing rack comprises:
Fixed part, described fixed part are fixed on the described fixedly board; And
The body of tubular, described body is located at top and the central axis of described body and the central axes of described runing rest of described fixed part, described body is made by the material of transmissive X ray, and wherein said multi-diaphragm collimator is set in the outside of described body.
6. radiotherapy equipment according to claim 1 is characterized in that, described a plurality of vane group have the block of maskable X ray in the filling between uniform parts and adjacent two vane group of making progress in week.
7. radiotherapy equipment according to claim 5 is characterized in that, described block is a kind of in tungsten piece, tungsten alloy piece, lead or the metal piece.
8. radiotherapy equipment according to claim 1 is characterized in that, described main collimator can be modulated into fan beam or conical beam with the X ray of described radiographic source emission.
9. radiotherapy equipment according to claim 1 is characterized in that, also comprises a plurality of drive motors, and described a plurality of drive motors link to each other with each blade correspondingly respectively and move along the direction that is parallel to described central axis to drive respective vanes.
10. a radiotherapy system is characterized in that, comprising:
According to each described radiotherapy equipment among the claim 1-9; And
Therapeutic bed, but an end of described therapeutic bed extend in the multi-diaphragm collimator of described radiotherapy equipment and with respect to described multi-diaphragm collimator top to bottom, left and right, front and rear and moves.
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| CN106267584A (en) * | 2016-07-29 | 2017-01-04 | 中国原子能科学研究院 | A kind of Double-disk rotation type compact degrader and using method thereof |
| CN106334274A (en) * | 2016-09-12 | 2017-01-18 | 上海联影医疗科技有限公司 | Linear accelerator |
| CN106730408A (en) * | 2016-11-17 | 2017-05-31 | 中国科学院深圳先进技术研究院 | Radiotherapy unit |
| CN108079444A (en) * | 2018-01-12 | 2018-05-29 | 广东东阳光药业有限公司 | Collimator changer and its application method |
| CN109350867A (en) * | 2018-08-01 | 2019-02-19 | 合肥中科离子医学技术装备有限公司 | A kind of structure for rotary frame inner rotation backboard |
| CN110404181A (en) * | 2018-04-26 | 2019-11-05 | 瑞地玛医学科技有限公司 | A kind of radiotherapy equipment and its beam-defining clipper |
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| CN106267584A (en) * | 2016-07-29 | 2017-01-04 | 中国原子能科学研究院 | A kind of Double-disk rotation type compact degrader and using method thereof |
| CN106267584B (en) * | 2016-07-29 | 2018-12-28 | 中国原子能科学研究院 | A kind of Double-disk rotation type compact degrader and its application method |
| CN106334274A (en) * | 2016-09-12 | 2017-01-18 | 上海联影医疗科技有限公司 | Linear accelerator |
| CN106730408A (en) * | 2016-11-17 | 2017-05-31 | 中国科学院深圳先进技术研究院 | Radiotherapy unit |
| CN106730408B (en) * | 2016-11-17 | 2020-02-14 | 中国科学院深圳先进技术研究院 | Radiotherapy device |
| CN108079444A (en) * | 2018-01-12 | 2018-05-29 | 广东东阳光药业有限公司 | Collimator changer and its application method |
| CN110404181A (en) * | 2018-04-26 | 2019-11-05 | 瑞地玛医学科技有限公司 | A kind of radiotherapy equipment and its beam-defining clipper |
| CN109350867A (en) * | 2018-08-01 | 2019-02-19 | 合肥中科离子医学技术装备有限公司 | A kind of structure for rotary frame inner rotation backboard |
| CN109350867B (en) * | 2018-08-01 | 2024-04-26 | 合肥中科离子医学技术装备有限公司 | Structure for rotating backboard inside rotating rack |
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