CN105107093A - Internal-external conformal multi-blade collimator and conformal method thereof - Google Patents
Internal-external conformal multi-blade collimator and conformal method thereof Download PDFInfo
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Abstract
Disclosed in the invention is an internal-external conformal multi-blade collimator comprising an external conformal blade assembly, an internal conformal blade assembly and a connecting element. The external conformal blade assembly consists of a first blade column, a second blade column, a first transmission assembly column, and a second transmission assembly column. The internal conformal blade assembly includes a blade array and a transmission assembly; and the transmission assembly contains a group of micro transmission mechanisms and a traction mechanism. The connecting element is used for supporting and connecting the external conformal blade assembly and the internal conformal blade assembly. According to the technical scheme, defects of the existing multi-blade collimator structure can be overcome and thus the internal-external conformal multi-blade collimator that can form a radial shading area in a central radiation field is provided, so that protection of important apparatuses on a target region path can be realized.
Description
Technical field
The present invention relates to field of medical device, specifically a kind of inside and outside conformal multi-diaphragm collimator and conformal method thereof.
Background technology
Radiotherapy pursue target be allow high energy dose distribution according to tumor shape come around, namely realize conformal; And the roentgendosis within the scope of target area is as far as possible according to the distribution of target area focus clinical requirement dose uniformity, realize adjusting by force with this; Simultaneously ray is avoided normal structure as far as possible and is not worn and penetrate normal structure.In existing radiotherapy apparatus, usually adopt multi-diaphragm collimator as the indispensable instrument of intensity modulated radiation therapy, and the general structure of multi-diaphragm collimator is many group micro servo motor band actuating miniature screw mechanisms, promote the tungsten alloy blade straight reciprocating motion of symmetric arrays, at the launched field that blade intermediate formation one is closely similar with target region shape to be illuminated, ray passes therethrough, and is irradiated to target location and carries out radiotherapy.Although propose some novel multi-diaphragm collimator structures in some documents, multi-diaphragm collimator as pneumatic in binary, double focusing multi-diaphragm collimator, and for example the patent No. is the Chinese patent of CN103079643A, propose a kind of multistage multi-diaphragm collimator of first group and second group multipair bundle blocking vane disposed adjacent one another, but these multi-diaphragm collimators are not all broken away from " many group micro servo motor band actuating miniature screw mechanisms, the blade promoting symmetric arrays in be formed centrally launched field " this population structure.And if the path of tumor target incidence exists vitals when not easily avoiding, especially for rotation intensity modulated therapy kind equipment, desirable collimator should arrange barrier material on vitals path, and existing multi-diaphragm collimator does not propose this scheme.
Summary of the invention
The object of the invention is to solve existing multi-diaphragm collimator structure not enough, provide a kind of and can form conformal multi-diaphragm collimator inside and outside ray occlusion area in the launched field of center, to realize the protection to the vitals on path, target area better.
The object of the invention is to be realized by following technical proposals:
A kind of inside and outside conformal multi-diaphragm collimator, comprising: outer conformal blade assembly, interior conformal blade assembly and connector; Outer conformal blade assembly, comprising: the first rows of blades, the second rows of blades, the first transmission component row and the second transmission component row; Described first rows of blades and the second rows of blades are oppositely arranged, first rows of blades and the second rows of blades all comprise the certain blade of one group of width be made up of ray barrier material, blade, each other can along horizontal direction relative movement along the lateral arrangement substantially vertical with useful to irradiation of rays axle; Described first transmission component row and the second transmission component row, correspond respectively to the first rows of blades and the setting of the second rows of blades, first transmission component row and the second transmission component row respectively comprise one group of micro electric push rod and guide rail, micro electric push rod one end connects blade, blade is arranged on guide rail, can move along guide rail; Interior conformal blade assembly, comprising: array of vanes and transmission component; Described array of vanes comprises the Length x Width that several ray barrier materials make and fixes, and Length x Width less blade unit, described blade unit is arranged on the athwartship plane substantially vertical with useful to irradiation of rays axle, transversely with longitudinal omnidirectional distribution; Described transmission component, comprises one group of Minitype transmission mechanism and haulage gear, and haulage gear moves on drive mechanism for drawing blade unit, forms ray and blocks conformal district; Connector, for supporting and being connected outer conformal blade assembly and interior conformal blade assembly.
Inside and outside above-mentioned one in conformal multi-diaphragm collimator scheme, further comprise vision-based detection assembly, described vision-based detection assembly comprises vision inspection apparatus, graphics processing unit and controller; Described vision inspection apparatus, inside and outside being formed for collimation device, conformal district is taken, and obtains launched field image; Described graphics processing unit, for launched field image is carried out image procossing, calculates blade or blade unit in-placing precision and launched field precision, and feeds back to controller; Described controller, be electrically connected with graphics processing unit, micro electric push rod, haulage gear and vision inspection apparatus, controller is for receiving the computing information of graphics processing unit, and control micro electric push rod and haulage gear moving blade and blade unit respectively, control vision inspection apparatus simultaneously and complete blade in-placing precision and launched field accuracy monitoring.
In such scheme, described Minitype transmission mechanism is the Minitype transmission mechanism that carbon fiber is made.
In such scheme, described haulage gear is magnetic track haulage gear, produces Magnetic force tracting blade element array move on drive mechanism by magnetic track.
In such scheme, described outer conformal blade assembly and interior conformal blade assembly, along the stacked setting of useful to irradiation of rays direction of principal axis, preferably select outer conformal blade assembly to be arranged on above interior conformal blade assembly.
In such scheme, described micro electric push rod being provided with micro photo electric detection ruler, for recording the displacement of electric push rod, and by time diffusion, drawing instantaneous velocity amount.
In such scheme, described outer conformal vane group Leaf length is greater than rail length, so that when forming launched field, guide rail can not enter in launched field.
In such scheme, the width of the blade unit in described interior conformal blade assembly Leaf array and the preferred 2mm of length, less length value, is conducive to improving the launched field resolution of multi-diaphragm collimator and conformal precision.
In such scheme, the preferred tungsten of described ray barrier material and tungsten alloy material, lead material etc.
In such scheme, further also comprise treatment planning systems, treatment executive system and x-ray image system; Described treatment planning systems is used for carrying out Rapid Dose Calculation to patient target area, calculates the parameter for the treatment of executive system, optimizes and data management; Described treatment executive system, comprises linear accelerator, and linear accelerator is for generation of high-energy ray, and linear accelerator end is provided with the inside and outside conformal multi-diaphragm collimator that view-based access control model detects, and carries out roentgenization around patient target area; Described x-ray image system, for the imaging of patient target area, and by become the image-guided patient of realization to put position, Target localization and tracking.
A conformal method for multi-diaphragm collimator, is characterized in that comprising inside and outside conformal multi-diaphragm collimator, treatment planning systems, treatment executive system and x-ray image system, and it realizes conformal method step and is:
A. determine that dose intensity distributes: treatment planning systems calculates target dose distribution on roentgenization path, generates dose distribution matrix, determine by dose distribution matrix the intensity distributions matrix that every a pair blade/blade unit is corresponding;
B. divide strength grade: the intensity distributions in steps A is divided into step-like strength grade according to intensity interval, strength grade size determines the degree of accuracy of dose distribution;
C. blade/blade unit coordinate sequence is solved: blade/blade unit coordinate when solving different intensity grades by intensity distributions matrix and ladder strength grade;
D. the conformal control of Ziye: blade/blade unit coordinate information is converted into the signal of telecommunication, is transferred to the controller of inside and outside conformal multi-diaphragm collimator, controller controls micro electric push rod and haulage gear moving blade and blade unit respectively, realizes inside and outside Ziye conformal;
E. Ziye accuracy detection and feedback: inside and outside the vision inspection apparatus of vision-based detection assembly is formed blade/blade unit, take pictures in conformal district, graphics processing unit is to view synthesis of taking pictures, calculate blade/blade unit in-placing precision, or/and micro photo electric detection ruler carries out the detection of blade in-placing precision, feed back and realize accuracy compensation control in controller;
F. Ziye synthesis: repeat above-mentioned D-E step, complete different intensity grades Ziye conformal, synthesized by different Ziye, forms inside and outside conformal multi-diaphragm collimator conformal.
Inside and outside conformal multi-diaphragm collimator of the present invention realizes inside and outside conformal principle: the first rows of blades in outer conformal blade assembly and the second rows of blades form outer conformal district under transmission component effect, outer conformal district Main Function is the conformal district that formation useful to irradiation of rays passes through, i.e. conformal district, target area; And conformal district is blocked by the effect formation ray of Minitype transmission mechanism and haulage gear in the blade unit in interior conformal blade assembly; its Main Function needs protection when the path irradiated existing vitals; or target area is annular target area; when zone line does not need to irradiate; form the conformal district of blocking ray, pass through to stop ray.
Over the course for the treatment of, if target area of irradiation is not annular target area, and path needs protection without vitals, then only need to control outer conformal vane group work and can realize conformal, this use with conventional collimator indistinction; And when having there are annular target area or target area exposure pathways needing protect vitals, then need to control outer conformal vane group and interior conformal vane group cooperation simultaneously, realize the protection to vitals.And for target area being failed the target area of the Protection path irradiated by sufficient dosage, can select to irradiate from other paths.So, collimator structure of the present invention can meet the requirement not reducing irradiating angle quantity and range of exposures, effectively can also protect vitals, improves therapeutic quality.
Beneficial effect of the present invention is:
1. propose and there is the inside and outside conformal multi-diaphragm collimator structure that ray blocks conformal district, can in the interior conformal district of outer conformal district intermediate formation " island " shape of conventional multi-diaphragm collimator, ray is passed through in outer conformal district, ray arrival target area is also conformal with target area, ray is blocked in interior conformal district, tissue to be protected on occlusion area and exposure pathways or organ conformal, can effectively protect some vitals and treatment angle and the range of movement of multi-diaphragm collimator need not be reduced, this will improve therapeutic quality effectively, when conventional accelerator carries out the radiotherapy of multi-diaphragm collimator static intensity modulating, there is obviously advantage.
2. the width of the blade unit in conformal blade assembly Leaf array and the preferably less value of length, and by blade unit according to horizontal and vertical, i.e. x in plane, y both direction arranged in arrays, be conducive to the launched field resolution of the ray blocked area of improving multi-diaphragm collimator and conformal precision, more effectively implement conformal and intensity modulated radiation therapy.
3. propose inside and outside conformal mode and the method for the detection of a kind of view-based access control model, vision-based detection assembly comprises vision inspection apparatus, graphics processing unit and controller, using vision-based detection and the image procossing a kind of mode as blade in-placing precision and conformal accuracy detection, the detection effect of the micro photo electric detection ruler of integrated structure itself, detection efficiency and precision can be improved, improve the reliability of detection simultaneously.
Accompanying drawing explanation
Fig. 1 is the structure of conformal multi-diaphragm collimator inside and outside the present invention and the inside and outside conformal launched field schematic diagram of formation thereof.
Fig. 2 is a kind of structural representation of the present invention.
Fig. 3 is that inside and outside conformal embodiment schematic diagram is irradiated in a target area of the present invention.Describe path, target area when having vitals, conformal rear target dose curve inside and outside collimator.
Fig. 4 is the flow chart of the conformal method of a kind of multi-diaphragm collimator of the present invention.
In accompanying drawing, the implication of each numeral is: 1: outer conformal blade assembly; 11: the first rows of blades; 111: blade; 12: the second rows of blades; 13: the first transmission component row; 131: micro electric push rod; 14: the second transmission component row; 15: outer conformal district; 2: interior conformal blade assembly; 21: array of vanes; 211: blade unit; 22: transmission component; 221: Minitype transmission mechanism; 23: interior conformal target area; 3: vision-based detection assembly; 31: controller; 32: vision inspection apparatus; 33: graphics processing unit; 4: incident dose strength distribution curve; 5: exposure dose strength distribution curve.
Specific embodiment
Be described in further detail the present invention below in conjunction with drawings and Examples, but the present invention is not limited only to described embodiment.
Embodiment one
The inside and outside conformal multi-diaphragm collimator of this example, as shown in Figure 1, comprising: outer conformal blade assembly 1, interior conformal blade assembly 2 and connector; Outer conformal blade assembly, comprising: the first rows of blades 11, second rows of blades 12, first transmission component row 13 and the second transmission component row 14; Described first rows of blades 11 and the second rows of blades 12 are oppositely arranged, first rows of blades 11 and the second rows of blades 12 all comprise the certain blade 111 of one group of width be made up of tungsten alloy material, blade 111, along the lateral arrangement substantially vertical with useful to irradiation of rays axle, can move along horizontal direction each other; Described first transmission component row 13 and the second transmission component row 14, correspond respectively to the first rows of blades 11 and the second rows of blades 12 is arranged, respectively comprise one group of micro electric push rod 131 and guide rail, micro electric push rod 131 connects one end and connects blade 111, and blade 111 is arranged on guide rail, can move along guide rail, in the outer conformal district 15 of intermediate formation, blade 111 length is greater than rail length herein, so that when forming conformal district's launched field, guide rail can not enter in launched field; Described interior conformal blade assembly 2, comprising: array of vanes 21 and transmission component 22; Described array of vanes 21 comprises length and width that several tungsten alloy materials make and to fix and Length x Width is the blade unit 211 of 2mm, is arranged on the athwartship plane substantially vertical with useful to irradiation of rays axle, transversely and genesis analysis; Described transmission component 22, comprise one group of miniature carbon fiber drive mechanism 221 and magnetic track haulage gear, magnetic track haulage gear is moved on miniature carbon fiber drive mechanism 221 by Magnetic force tracting array of vanes 21, forms ray and blocks interior conformal district 23; Described connector, for supporting and being connected outer conformal blade assembly 1 and interior conformal blade assembly 2.In inside and outside conformal multi-diaphragm collimator scheme in this example, described outer conformal blade assembly 1 and interior conformal blade assembly 2 are along the stacked setting of useful to irradiation of rays direction of principal axis, and interior conformal blade assembly 2 is arranged at above outer conformal blade assembly 1.
In order to realize the feedback of blade in-placing precision and conformal precision, the inside and outside conformal multi-diaphragm collimator in the present embodiment also comprises vision-based detection assembly 3, is made up of controller 31, vision inspection apparatus 32 and graphics processing unit 33; Described vision inspection apparatus 32, inside and outside being formed for collimation device, conformal district is taken, and obtains launched field image; Described graphics processing unit 33, for launched field image is carried out image procossing, calculates blade 111 or blade unit 211 in-placing precisions and launched field precision, and feeds back to controller 31; Described controller 31, also with micro electric push rod 131, haulage gear and vision inspection apparatus 32 telecommunication be connected, controller 31 for controlling micro electric push rod 131 moving blade 111, control haulage gear traction blade unit 211.Control the monitoring that vision inspection apparatus 32 completes blade and blade unit's in-placing precision and launched field precision simultaneously.
The inside and outside conformal multi-diaphragm collimator of the present embodiment realizes inside and outside conformal principle and is: the first rows of blades 11 in outer conformal blade assembly 1 and the second rows of blades 12 form outer conformal district 15 under the first transmission component row 13 and the effect of the second transmission component row 14, outer conformal district 15 Main Function is the conformal district that formation useful to irradiation of rays passes through, i.e. conformal district, target area; And interior conformal district 23 is blocked by forming ray under the effect of miniature carbon fiber drive mechanism 221 and magnetic track haulage gear in blade unit 211 in interior conformal blade assembly 2; its Main Function needs protection when the path irradiated existing vitals; or target area is annular target area; when zone line does not need to irradiate; ray is blocked in the Shi Neixing district formed; to stop ray to pass through, conformal district 15 intermediate formation " island " conformal district outside.So, the inside and outside conformal multi-diaphragm collimator structure of the present embodiment can meet the requirement not reducing irradiating angle quantity and range of exposures, effectively can also protect vitals.
As shown in Figure 3; when adopting the multi-diaphragm collimator of the present embodiment to carry out radiotherapy; path, certain target area there are vitals need protection; then in the final target dose distribution required; outer conformal district 15 should be subject to dose irradiation; and interior conformal district 23 should avoid irradiating, then adopt the collimator of this enforcement to irradiate, its conformal method flow process as shown in Figure 4 can reach comparatively satisfied exposure dose strength distribution curve 5.And the idiographic flow shown in Fig. 4 is as follows:
A. determine that dose intensity distributes: treatment planning systems calculates target dose distribution on exposure pathways, generates dose distribution matrix, is determined the intensity distributions matrix of every a pair blade 111/ blade unit 211 correspondences by dose distribution matrix;
B. divide strength grade: the intensity distributions in steps A is divided into step-like strength grade according to intensity interval, strength grade size determines the degree of accuracy of dose distribution;
C. blade 111/ blade unit 211 coordinate sequences are solved: blade 111/ blade unit 211 coordinates when solving different intensity grades by intensity distributions matrix and ladder strength grade;
D. the conformal control of Ziye: blade 111/ blade unit 211 coordinate informations are converted into the signal of telecommunication, be transferred to the controller 31 of the vision-based detection assembly 3 of inside and outside conformal multi-diaphragm collimator, controller 31 controls micro electric push rod 131 and haulage gear moving blade 111 and blade unit 211 respectively, realizes inside and outside Ziye conformal;
E. Ziye accuracy detection and feedback: take pictures in the inside and outside conformal district that vision inspection apparatus 32 pairs of blade 111/ blade units 211 of vision-based detection assembly 3 are formed, and to view synthesis of taking pictures, calculate blade 111/ blade unit 211 in-placing precisions, feed back and realize 111, leaf or blade unit 211 in controller 31 and to put in place error compensation, and then treatment executive system implements x-ray bombardment;
F. Ziye synthesis: repeat above-mentioned D-E step, completes different intensity grades Ziye conformal and irradiate, and by dosage synthesis on different Ziye, forms inside and outside conformal multi-diaphragm collimator for conformal with irradiation inside and outside target area, obtains target area exposure dose strength distribution curve 5.
Embodiment two
As shown in Figure 2, described outer conformal blade assembly 1 and interior conformal blade assembly 2 are along the stacked setting of useful to irradiation of rays direction of principal axis, and interior conformal blade assembly 2 is arranged at below outer conformal blade assembly 1, and all the other are all with embodiment one for the inside and outside conformal multi-diaphragm collimator of this example.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a conformal multi-diaphragm collimator inside and outside, comprising: outer conformal blade assembly 1, interior conformal blade assembly 2 and connector; Outer conformal blade assembly 1, comprising: the first rows of blades 11, second rows of blades 12, first transmission component row 13 and the second transmission component row 14; Described first rows of blades 11 and the second rows of blades 12 are oppositely arranged, first rows of blades 11 and the second rows of blades 12 all comprise the certain blade 111 of one group of width be made up of ray barrier material, blade 111, along the lateral arrangement substantially vertical with useful to irradiation of rays axle, can move along horizontal direction each other; Described first transmission component row 13 and the second transmission component row 14, correspond respectively to the first rows of blades 11 and the second rows of blades 12 is arranged, respectively comprise one group of micro electric push rod 131 and guide rail, micro electric push rod 131 one end connects blade 111, blade 111 is arranged on guide rail, can move along guide rail; Interior conformal blade assembly 2, comprising: array of vanes 21 and transmission component 22; Described array of vanes 21 comprises Length x Width that several ray barrier materials make and fixes and the less blade unit 211 of Length x Width, is arranged on the athwartship plane substantially vertical with useful to irradiation of rays axle, transversely and genesis analysis; Described transmission component 22, comprises one group of Minitype transmission mechanism 221 and haulage gear, and haulage gear moves on drive mechanism for drawing array of vanes 211, forms the interior conformal district 23 that ray blocks; Described connector, for supporting and being connected outer conformal blade assembly 1 and interior conformal blade assembly 2.
2. inside and outside conformal multi-diaphragm collimator as claimed in claim 1, is characterized in that: further comprise vision-based detection assembly 3, is made up of vision inspection apparatus 32, graphics processing unit 33 and controller 31; Described vision inspection apparatus 32, inside and outside being formed for collimation device, take pictures in conformal district, obtains launched field image; Described graphics processing unit 33, for launched field image is carried out image procossing, calculates blade 111 or blade unit 211 in-placing precisions and launched field precision, and feeds back to controller 31; Described controller 31 is electrically connected with graphics processing unit 33, micro electric push rod 131, haulage gear and vision inspection apparatus 32, for receiving the computing information of graphics processing unit 33, and control micro electric push rod 131 and haulage gear moving blade 111 and blade unit 211 respectively, control vision inspection apparatus simultaneously and complete blade in-placing precision and launched field accuracy monitoring.
3. inside and outside conformal multi-diaphragm collimator as claimed in claim 2, is characterized in that: the Minitype transmission mechanism that described Minitype transmission mechanism 221 makes for carbon fiber.
4. inside and outside conformal multi-diaphragm collimator as claimed in claim 3, is characterized in that: described haulage gear is magnetic track haulage gear, produces Magnetic force tracting blade unit 211 arrays move on drive mechanism by magnetic track.
5. inside and outside conformal multi-diaphragm collimator as claimed in claim 1, is characterized in that: described outer conformal blade assembly 1 and interior conformal blade assembly 2 are along the stacked setting of useful to irradiation of rays direction of principal axis.
6. inside and outside conformal multi-diaphragm collimator as claimed in claim 1, is characterized in that: described micro electric push rod 131 is provided with micro photo electric detection ruler, for recording the displacement of micro electric push rod 131, and by time diffusion, can draw instantaneous velocity amount.
7. inside and outside conformal multi-diaphragm collimator as claimed in claim 1, is characterized in that: described outer conformal blade assembly 1 Leaf 111 length is greater than rail length, so that when forming launched field, guide rail can not enter in launched field.
8. inside and outside conformal multi-diaphragm collimator as claimed in claim 1, is characterized in that: the preferred tungsten of described ray barrier material and tungsten alloy material, lead material.
9. inside and outside conformal multi-diaphragm collimator as claimed in claim 1, is characterized in that: further also comprise treatment planning systems, treatment executive system and x-ray image system; Described treatment planning systems is used for carrying out Rapid Dose Calculation to patient target area, calculates the parameter for the treatment of executive system, optimizes and data management; Described treatment executive system, comprises linear accelerator, and linear accelerator is for generation of high-energy ray, and linear accelerator end is provided with the inside and outside conformal multi-diaphragm collimator that view-based access control model detects, and carries out roentgenization around patient target area; Described x-ray image system, for the imaging of patient target area, and by become the image-guided patient of realization to put position, Target localization and tracking.
10. a conformal method for multi-diaphragm collimator, is characterized in that comprising inside and outside conformal multi-diaphragm collimator, treatment planning systems, treatment executive system and x-ray image system, and it realizes conformal method step and is:
A. determine that dose intensity distributes: treatment planning systems calculates target dose distribution on exposure pathways, generates dose distribution matrix, determined the intensity distributions matrix of every a pair blade/111 blade unit 211 correspondence by dose distribution matrix;
B. divide strength grade: the intensity distributions in steps A is divided into step-like strength grade according to intensity interval, strength grade size determines the degree of accuracy of dose distribution;
C. blade 111/ blade unit 211 coordinate sequences are solved: blade 111/ blade unit 211 coordinates when solving different intensity grades by intensity distributions matrix and ladder strength grade;
D. the conformal control of Ziye: blade 111/ blade unit 211 coordinate informations are converted into the signal of telecommunication, be transferred to the controller 31 of the vision-based detection assembly 3 of inside and outside conformal multi-diaphragm collimator, controller 31 controls micro electric push rod 131 and haulage gear moving blade 111 and blade unit 211, realizes inside and outside Ziye conformal;
E. Ziye accuracy detection and feedback: take pictures in the inside and outside conformal district that vision inspection apparatus 32 pairs of blade 111/ blade units 211 of vision-based detection assembly 3 are formed, graphics processing unit 33 is to view synthesis of taking pictures, calculate blade 111/ blade unit 211 in-placing precisions, detect or/and micro photo electric detection ruler carries out blade 111 in-placing precision, feed back and realize 111, leaf or blade unit 211 in controller 31 and to put in place error compensation;
F. Ziye synthesis: repeat above-mentioned D-E step, complete different intensity grades Ziye conformal, synthesized by different Ziye, forms inside and outside conformal multi-diaphragm collimator conformal.
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| CN106075745B (en) * | 2016-05-26 | 2018-12-04 | 深圳市奥沃医学新技术发展有限公司 | Zoom collimator, colimated light system, treatment head and radiotherapy equipment |
| US10857385B2 (en) | 2016-05-26 | 2020-12-08 | Our New Medical Technologies | Adjustable collimator, collimation system, therapy head and radiotherapy device |
| CN106345072A (en) * | 2016-09-21 | 2017-01-25 | 山东师范大学 | Real-time detecting method and system for multi-leaf collimator blade position of linear accelerator |
| CN106345072B (en) * | 2016-09-21 | 2018-10-09 | 山东师范大学 | The real-time detection method and system of a kind of linear accelerator multi-leaf raster leaf position |
| CN108096718A (en) * | 2016-11-24 | 2018-06-01 | 上海东软医疗科技有限公司 | Accelerator system and control method |
| CN108096718B (en) * | 2016-11-24 | 2020-05-05 | 上海东软医疗科技有限公司 | Accelerator system and control method |
| CN107297031A (en) * | 2017-05-17 | 2017-10-27 | 上海交通大学医学院附属第九人民医院 | A kind of high-precision radiotherapy collimater |
| WO2019136763A1 (en) * | 2018-01-15 | 2019-07-18 | 西安大医集团有限公司 | Multi-leaf collimator and radiation treatment head |
| CN109513119A (en) * | 2018-11-12 | 2019-03-26 | 武汉大学 | A kind of volume rotation intensity modulated radiation therapy plan collimator orientation optimization method |
| CN109513119B (en) * | 2018-11-12 | 2020-07-17 | 武汉大学 | Volume rotation intensity modulation radiotherapy plan collimator angle optimization method |
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