CN103272338A - Radiotherapy equipment and radiotherapy system with radiotherapy equipment - Google Patents
Radiotherapy equipment and radiotherapy system with radiotherapy equipment Download PDFInfo
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- CN103272338A CN103272338A CN201310187912XA CN201310187912A CN103272338A CN 103272338 A CN103272338 A CN 103272338A CN 201310187912X A CN201310187912X A CN 201310187912XA CN 201310187912 A CN201310187912 A CN 201310187912A CN 103272338 A CN103272338 A CN 103272338A
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Abstract
The invention discloses radiotherapy equipment and a radiotherapy system with the radiotherapy equipment. The radiotherapy equipment comprises a fixed cabinet, a rotary support, a main collimator, a radiation source and a multi-leaf collimator, wherein the rotary support is rotationally arranged on the fixed cabinet, and is provided with the radiation source, the main collimator is arranged on the radiation source, the multi-leaf collimator is mounted on the fixed cabinet and comprises multiple parallel leaf groups, each leaf group comprises a first leaf, a second leaf, a first linear motor and a second linear motor, the first and second leaves are oppositely arranged, the first linear motor is connected with the first leaf to drive the first leaf to move, and the second linear motor is connected with the second leaf to drive the second leaf to move. The radiotherapy equipment adopts the linear motors to drive the leaves to move, thus realizing the accurate control on the speed and position of the leaves and further improving the curing precision and efficiency.
Description
Technical field
The present invention relates to field of medical, especially relate to a kind of radiotherapy equipment and have the radiotherapy system of this radiotherapy equipment.
Background technology
(Intensity Modulated Radiotherapy, IMRT), its cardinal principle can be summarized as follows the intensity modulated radiation therapy technology: by the intensity of accent intensity device modulation incident beams such as collimator, realize the dosage accumulation of X ray.Its basic goal is, improves the space conformal degree of beam and tumor target area, avoids critical tissue's organ simultaneously, reduces contiguous normal structure dosage.In the Intensity Modulation Radiated Therapy (IMRT), crucial execution unit is multi-diaphragm collimator (Multi-leaf Collimator, MLC claim multi-leaf optical grating, multi-leaf collimator again), multi-diaphragm collimator is made of one or more groups blade, and the mechanical movement of blade changes combination change beam shape and forms the required visual field.
T.R.Mackie has proposed a kind of intensity modulated radiation therapy implementation--tomography radiotherapy system in 1993, compare conventional intensity modulated radiation therapy, the advantage of tomography radiotherapy system is, can provide flexible more and roentgendosis distribution accurately, the tumor disease is applied widely, is particularly suitable for the radiotherapy of general tumor, complicated tumor.
But at present in the tumor spiral-fault radiation therapeutic system, when bed thickness arrange when excessive (as 〉=5mm), tumor target area conformal degree significantly reduces, dose distribution can't satisfy clinical demand, and therapeutic effect is not good enough, when bed thickness arrange when too small (as≤1mm), therapeutic efficiency is lower, the magnetron working time increases under the equal conditions, has reduced its service life, thereby has increased the patient burden indirectly.Cause the problems referred to above reason to be: the binary multi-diaphragm collimator that traditional spiral-fault intensity modulated radiation therapy adopts, blade is by compressed air-driven, work in the switch two states, can't be implemented in the accurate location in vane travels centre position, can't realize the adjusting of switching speed and accurately control, thereby can't realize the transmitted intensity modulation at the tomography thickness direction.
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 this radiotherapy equipment adopts the linear electric motors driven vane to move, and has realized the accurate control of blade velocity and position, thereby has improved treatment precision and therapeutic efficiency.
Another object of the present invention is to propose a kind of radiotherapy system, this radiotherapy system comprises above-mentioned radiotherapy equipment, and therapeutic effect is good, the therapeutic efficiency advantages of higher thereby radiotherapy system has.
According to the radiotherapy equipment of first aspect present invention embodiment, this radiotherapy equipment 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 X ray that is used on the described radiographic source described radiographic source emission and are modulated into fan beam; And 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 side by side, and each described vane group includes: first blade; First linear electric motors, described first linear electric motors link to each other to drive described first blade and move along the direction that is parallel to the central axis of described runing rest with described first blade; Second blade, described second blade and described first blade are oppositely arranged; Second linear electric motors, described second linear electric motors link to each other to drive described second blade and move along the direction that is parallel to the central axis of described runing rest with described second blade; Wherein, the actuating speed of described first linear electric motors and described second linear electric motors is adjustable to change the distance between described first blade and described second blade.
According to the radiotherapy equipment of the embodiment of the invention, based on the spiral-fault radiation therapeutic of bed thickness segmentation, can transform in the conventional helical tomotherapy device.By the linear electric motors driven vane is set, can carry out the transmitted intensity modulation at the tomography thickness direction, realize the thick interior spiral-fault radiation therapeutic in sublayer, and can carry out the thick spiral-fault radiation therapeutic in a plurality of sublayers simultaneously, improve spiral-fault radiotherapy system dose distribution ability, under the prerequisite that guarantees the treatment precision, improve therapeutic efficiency, satisfy the clinical demand of complicated tumor radiotherapy.
In addition, according to the radiotherapy equipment of the embodiment of the invention, can also have following additional technical feature:
According to one embodiment of present invention, described radiotherapy equipment also comprises for the primary importance measuring device of measuring described first leaf position and the second position measuring device that is used for measuring described second leaf position.
According to one embodiment of present invention, side surface on the described first vane thickness direction of described first blade is provided with first boss, opposite side surface on the described first vane thickness direction of described first blade is provided with first groove, and wherein first groove on each first blade cooperates with first boss on adjacent first blade.
According to one embodiment of present invention, side surface on the described second vane thickness direction of described second blade is provided with second boss, opposite side surface on the described second vane thickness direction of described second blade is provided with second groove, and wherein second groove on each second blade cooperates with second boss on adjacent second blade.
According to one embodiment of present 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.
According to one embodiment of present invention, described driven unit comprises motor and and link to each other with the outfan of described motor and is used for and drives described runing rest pivoted pulley drive mechanism.
According to one embodiment of present invention, described driven unit comprises motor and and link to each other with the outfan of described motor and is used for and drives a pair of gear pair that described runing rest rotates.
According to one embodiment of present invention, described first blade is made by the wherein a kind of material in tungsten, tungsten alloy, lead or the metal, and described second blade is made by the wherein a kind of material in tungsten, tungsten alloy, lead or the metal.
According to some embodiments of the present invention, described first linear electric motors removably link to each other with described first blade or are integrally welded; Described second linear electric motors removably link to each other with described second blade or are integrally welded.
Radiotherapy system according to this second aspect embodiment comprises: radiotherapy equipment, described radiotherapy equipment are the radiotherapy equipment among the above-mentioned first aspect embodiment according to the present invention; And therapeutic bed, but described therapeutic bed moves with respect to the runing rest top to bottom, left and right, front and rear of described radiotherapy equipment.
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 sketch map of radiotherapy system according to an embodiment of the invention;
Fig. 2 is the sketch map of radiotherapy system according to an embodiment of the invention, wherein shows runing rest, main collimator, radiographic source and multi-diaphragm collimator;
Fig. 3 is the sketch map of radiographic source, main collimator and multi-diaphragm collimator;
Fig. 4 is first blade and the second blade movement rule and transmitted intensity graph of a relation in the vane group;
Fig. 5 is that radiotherapy equipment is realized the sketch map of the thick radiotherapy in sublayer according to an embodiment of the invention;
Fig. 6 is the sectional view of first blade or second blade.
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. 6 description according to the embodiment of the invention, be used for the treatment of tumor.
As shown in Figure 2, runing rest 2 is on the central axis of runing rest 2 is 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 ball between the board 1, can reduce runing rest 2 like this and the friction when fixedly relatively rotating between the board 1, ball 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.
Multi-diaphragm collimator 4 is installed in fixedly on the board 1, multi-diaphragm collimator 4, radiographic source 6 and main collimator 3 are positioned at the same side of runing rest 2 and radiographic source 6 and main collimator 3 in the outside that radially is positioned at multi-diaphragm collimator 4 of runing rest 2, specifically, from inside to outside be multi-diaphragm collimator 4, main collimator 3 and radiographic source 6 diametrically, be radiated on the multi-diaphragm collimator 4 after the preliminary modulation of the X ray that radiographic source 6 sends by main collimator 3.
As Fig. 3 and shown in Figure 5, multi-diaphragm collimator 4 comprises a plurality of vane group, and a plurality of vane group closely are arranged side by side, and X ray can not pass the adjacent vanes group like this.For example in the example of Fig. 3, multi-diaphragm collimator 4 comprises ten groups of tight juxtaposed vane group.Be understandable that the quantity of vane group is more many, therapeutic effect is relatively more good, therefore can specifically set the quantity of vane group according to the required treatment precision of equipment.
As Fig. 3 and shown in Figure 5, each vane group includes first blade 411, first linear electric motors 413, second blade 412 and second linear electric motors 414.As shown in Figure 3, X ray passes multi-diaphragm collimator 4 and projects to the launched field shape 72 that therapeutic bed 200 projection planes obtain Strength Changes, and wherein the variation of first blade 411 and second blade, 412 movement velocitys and position can realize the variation of intensity in the launched field shape in the vane group.
As shown in Figure 5, the length direction of first blade 411 can be parallel to the direction of the central axis of runing rest 2, and first blade 411 can be the blade of flat.First linear electric motors 413 link to each other to drive first blade 411 and move along the direction that is parallel to the central axis of runing rest 2 with first blade 411, that is to say that first linear electric motors 413 can drive first blade 411 and do reciprocating linear motion in the direction of the central axis that is parallel to runing rest 2.
As shown in Figure 5, second blade 412 and first blade 411 are oppositely arranged, in other words, first blade 411 is relative with second blade 412 in the direction of the central axis that is parallel to runing rest 2, second blade 412 can adopt identical structure with first blade 411, and second blade 412 can be the blade of flat.Second linear electric motors 414 link to each other to drive second blade 412 and move along the direction that is parallel to the central axis of runing rest 2 with second blade 412, that is to say that second linear electric motors 414 drive second blade 412 and do reciprocating linear motion in the direction of the central axis that is parallel to runing rest 2.
Need explanation a bit, first linear electric motors 413 and second linear electric motors 414 can be common linear electric motors, the output shaft of these linear electric motors can be along linear telescopic, thereby drive coupled parts along straight reciprocating motion, all be prior art about the structure of linear electric motors and operation principle etc., and known by those of ordinary skill in the field, therefore no longer described in detail here.
Wherein, the actuating speed of first linear electric motors 413 and second linear electric motors 414 is adjustable to change the distance between first blade 411 and second blade 412.Here, " actuating speed " refers to first linear electric motors 413 and drives the speed of first blade 411 and the speed that second linear electric motors 414 drive second blade 412.Because the actuating speed of first linear electric motors 413 and second linear electric motors 414 is variable, therefore realized the accurate control of first blade 411 and second blade, 412 speed, position, such first blade 411 and second blade 412 are equidirectional when mobile, by controlling the actuating speed of first linear electric motors 413 and second linear electric motors 414, thereby the distance of 412 in first blade 411 and second blade and the position of these two blades have been controlled indirectly, and then realize the modulation of transmitted intensity obtaining excellent curative at the tomography thickness direction.
Wherein, as shown in Figure 4, curve 81 schematically shows the characteristics of motion of first blade 411, curve 82 schematically shows the characteristics of motion of second blade 412, two intersection points of curve 81 and curve 82 are respectively original position and the final position of first blade 411 and 412 motions of second blade, the transmitted intensity that the variation of its speed and position has formed on the bed thickness direction when first blade 411 and 412 motions of second blade changes, shown in curve 83, curve 83 is divided into 10 five equilibriums, it is thick that every part of width is the sublayer, transmitted intensity is done homogenization calculating in the sublayer is thick, thus the thick transmitted intensity bar diagram in the sublayer that can obtain dispersing, as shown in Figure 4.
Wherein, as shown in Figure 5, label A schematically shows the oncotherapy volume, B schematically shows bed thickness, adopt radiotherapy equipment 100 according to an embodiment of the invention can realize the further division of bed thickness B, for example can form the intensity modulated of 10 equimolecular bed thickness shown in Fig. 5, utilize the thick intensity modulated effect in this sublayer can realize the thick interior spiral-fault radiation therapeutic in sublayer.
For example, be the tumor of 20cm to treat a longitudinal length (direction that is parallel to the central axis of runing rest 2), adopt traditional therapeutic modality (with the air driven leaf switch), at first should tumor be divided into multilamellar on vertically described, in order to improve therapeutic effect, bed thickness should be as far as possible little, be that 1mm is example with the bed thickness, need this tumor is divided into 200 layers, like this to each layer radiotherapy the time, runing rest 2 all will rotate a circle and namely rotate 360 °, if with the complete radiotherapy of whole tumor, need runing rest 2 to drive radiographic source 6, main collimator 3 and multi-diaphragm collimator 4 rotations 200 circles, not only treatment time is long, simultaneously to a certain extent because radiographic source 6, main collimator 3 and multi-diaphragm collimator 4 long-time continuous firings and cause the life-span to be reduced have increased patient's treatment cost indirectly.
Comparatively speaking, adopt when length of radiotherapy equipment 100 treatments is the tumor of 20cm according to an embodiment of the invention, at first also in the vertical tumor is divided into multilamellar, but since according to an embodiment of the invention radiotherapy equipment 100 owing to adopt the linear electric motors driven vane to move, can realize the accurate control to blade velocity and position, two blades in such one group (i.e. first blade 411 and second blade 412) described vertically in the moving process, preset distance at interval between two blades when can be implemented in diverse location, a numerical value that is appreciated that this preset distance to be based on this layer tumor shape and precomputes.
Thus, when the tumor layering that is 20cm to a length, bed thickness can suitably strengthen, be that 5mm is example with the bed thickness, then need tumor is divided into 40 layers, like this to each layer radiotherapy the time, runing rest 2 all will rotate a circle and namely rotate 360 °, if with the complete radiotherapy of whole tumor, need runing rest 2 to drive radiographic source 6, main collimator 3 and multi-diaphragm collimator 4 rotations 40 circles have so not only shortened treatment time, have also shortened radiographic source 6 simultaneously, the service time of main collimator 3 and multi-diaphragm collimator 4, increase its service life, thereby reduced patient's treatment cost indirectly.
In brief, the present invention is based on the improvement to the spiral-fault intensity modulated radiation therapy multi-diaphragm collimator of bed thickness segmentation, by changing the type of drive of blade in traditional multi-diaphragm collimator, make that radiotherapy equipment 100 can be used for spiral-fault radiation therapeutic better according to an embodiment of the invention, owing to adopt linear electric motors to drive respective vanes, thereby realized the accurate control of leaf position and speed, and then radiotherapy equipment 100 can be realized the transmitted intensity modulation at the tomography thickness direction, it is thick that bed thickness is further segmented the formation sublayer, utilize this intensity modulated ability can realize the thick internal coiling fault radiation therapeutic in sublayer, when guaranteeing the treatment precision, improved therapeutic efficiency.
According to the radiotherapy equipment 100 of the embodiment of the invention, based on the spiral-fault radiation therapeutic of bed thickness segmentation, can transform in conventional helical tomotherapy device 100.By the linear electric motors driven vane is set, can carry out the transmitted intensity modulation at the tomography thickness direction, realize the thick interior spiral-fault radiation therapeutic in sublayer, and can carry out the thick spiral-fault radiation therapeutic in a plurality of sublayers simultaneously, improve spiral-fault radiotherapy system dose distribution ability, under the prerequisite that guarantees the treatment precision, improve therapeutic efficiency, satisfy the clinical demand of complicated tumor radiotherapy.
According to one embodiment of present invention, radiotherapy equipment 100 also comprises for the primary importance measuring device of measuring first blade, 411 positions and for the second position measuring device of measuring second blade, 412 positions.By primary importance measuring device and second position measuring device are set, thereby can accurately obtain the positional information of first blade 411 and second blade 412, like this by analyzing, calculate the speed that can obtain first blade 411 and second blade 412, speed and the positional information of first blade 411 and second blade 412 have so just accurately been obtained, this information can feed back to first linear electric motors 413 and second linear electric motors, 414, the first linear electric motors 413 and second linear electric motors 414 and drive first blade 411 and second blade 412 based on this information.
Be understandable that the quantity of the quantity of primary importance measuring device and first blade 411 is one to one, the quantity of the quantity of second position measuring device and second blade 412 is one to one.
As shown in Figure 6, side surface on first blade, 411 thickness directions (left and right directions among Fig. 6) of first blade 411 is provided with first boss 4111, another side on first blade, 411 thickness directions of first blade 411 is provided with first groove 4112, wherein first groove 4112 on each first blade 411 cooperates with first boss 4111 on adjacent first blade 411, and first boss 4111 on each first blade 411 cooperates with first groove 4112 on adjacent first blade 411.
In other words, because vane group is closely juxtaposed, therefore a plurality of first blades 411 also are compact arranged, first boss 4111 of each first blade, 411 1 side cooperates the location with first groove 4112 of another first blade 411 of this side, and first groove 4112 of each first blade, 411 opposite side cooperates the location with first boss 4111 of another first blade 411 of this side, make so on the one hand and can closely and put between a plurality of first blades 411, can also avoid X ray between two adjacent first blades 411, to pass in addition, influence therapeutic effect.
Equally, as shown in Figure 6, side surface on second blade, 412 thickness directions (left and right directions among Fig. 6) of second blade 412 is provided with second boss 4121, another side on second blade, 412 thickness directions of second blade 412 is provided with second groove 4122, wherein second groove 4122 on each second blade 412 cooperates with second boss 4121 on adjacent second blade 412, and the boss on each second blade 412 cooperates with second groove 4122 on adjacent second blade 412.
In other words, because vane group is closely juxtaposed, therefore a plurality of second blades 412 also are compact arranged, second boss 4121 of each second blade, 412 1 side cooperates the location with second groove 4122 of another second blade 412 of this side, and second groove 4122 of each second blade, 412 opposite side cooperates the location with second boss 4121 of another second blade 412 of this side, make so on the one hand and can closely and put between a plurality of second blades 412, can also avoid X ray between two adjacent second blades 412, to pass in addition, influence therapeutic effect.
In brief, in the example depicted in fig. 6, first blade 411 adopts identical structure with second blade 412.
As shown in Figure 2, radiotherapy equipment 100 also comprises driven unit 5, and driven unit 5 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 5 comprises motor and links to each other with the outfan of motor and be used for driving runing rest 2 pivoted pulley drive mechanisms.Certainly, the invention is not restricted to this, in another embodiment of the present invention, driven unit 5 comprises motor and links to each other with the outfan of motor and be used for driving a pair of gear pair that runing rest 2 rotates.Be understandable that, for other driven unit 5 that can realize driving runing rest 2 rich its central axis rotations, all fall within the scope of protection of the present invention.
According to some embodiments of the present invention, first blade 411 can be made by the wherein a kind of material in tungsten, tungsten alloy, lead or the metal, and second blade 412 can be made by the wherein a kind of material in tungsten, tungsten alloy, lead or the metal.
According to some embodiments of the present invention, first linear electric motors 413 removably link to each other with first blade 411, and for example the output shaft of first linear electric motors 413 can link to each other by screw thread with first blade 411, and is for convenience detach like this, is convenient to the maintenance of motor.Certainly, the present invention is not limited to this, and in other embodiments of the invention, first linear electric motors 413 and first blade 411 are integrally welded, for example the output shaft of first linear electric motors 413 and first blade, 411 integrally welded structures.
According to some embodiments of the present invention, second linear electric motors 414 removably link to each other with second blade 412, and for example the output shaft of second linear electric motors 414 can link to each other by screw thread with second blade 412, and is for convenience detach like this, is convenient to the maintenance of motor.Certainly, the present invention is not limited to this, and in other embodiments of the invention, second linear electric motors 414 and second blade 412 are integrally welded, for example the output shaft of second linear electric motors 414 and second blade, 412 integrally welded structures.
According to one embodiment of present invention, as shown in Figure 3, multi-diaphragm collimator 4 can comprise cutting ferrule 71, wherein a plurality of vane group and putting in this cutting ferrule 71.
Radiotherapy system according to the embodiment of the invention is described below.
Radiotherapy system comprises radiotherapy equipment 100 and therapeutic bed 200 according to an embodiment of the invention, wherein radiotherapy equipment 100 is according to the radiotherapy equipment 100 in the above embodiment of the present invention, but therapeutic bed 200 moves with respect to runing rest 2 top to bottom, left and right, front and rear of radiotherapy equipment 100.
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 X ray that is used on the described radiographic source described radiographic source emission and are modulated into fan beam; And
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 side by side, and each described vane group includes:
First blade;
First linear electric motors, described first linear electric motors link to each other to drive described first blade and move along the direction that is parallel to the central axis of described runing rest with described first blade;
Second blade, described second blade and described first blade are oppositely arranged;
Second linear electric motors, described second linear electric motors link to each other to drive described second blade and move along the direction that is parallel to the central axis of described runing rest with described second blade;
Wherein, the actuating speed of described first linear electric motors and described second linear electric motors is adjustable to change the distance between described first blade and described second blade.
2. radiotherapy equipment according to claim 1 is characterized in that, also comprises for the primary importance measuring device of measuring described first leaf position and for the second position measuring device of measuring described second leaf position.
3. radiotherapy equipment according to claim 1, it is characterized in that, side surface on the described first vane thickness direction of described first blade is provided with first boss, opposite side surface on the described first vane thickness direction of described first blade is provided with first groove, and wherein first groove on each first blade cooperates with first boss on adjacent first blade.
4. radiotherapy equipment according to claim 1, it is characterized in that, side surface on the described second vane thickness direction of described second blade is provided with second boss, opposite side surface on the described second vane thickness direction of described second blade is provided with second groove, and wherein second groove on each second blade cooperates with second boss on adjacent second blade.
5. 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.
6. radiotherapy equipment according to claim 5 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.
7. radiotherapy equipment according to claim 5 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.
8. radiotherapy equipment according to claim 1, it is characterized in that, described first blade is made by the wherein a kind of material in tungsten, tungsten alloy, lead or the metal, and described second blade is made by the wherein a kind of material in tungsten, tungsten alloy, lead or the metal.
9. radiotherapy equipment according to claim 1 is characterized in that, described first linear electric motors removably link to each other with described first blade or be integrally welded;
Described second linear electric motors removably link to each other with described second blade or are integrally welded.
10. a radiotherapy system is characterized in that, comprising:
Radiotherapy equipment, described radiotherapy equipment are according to each described radiotherapy equipment among the claim 1-9; And
Therapeutic bed, but described therapeutic bed moves with respect to the runing rest top to bottom, left and right, front and rear of described radiotherapy equipment.
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| CN104658629A (en) * | 2013-11-20 | 2015-05-27 | 上海联影医疗科技有限公司 | Blade driving structure and multi-blade collimator |
| CN104835547A (en) * | 2014-02-11 | 2015-08-12 | 上海联影医疗科技有限公司 | Multi-blade collimator |
| CN105107093A (en) * | 2015-09-05 | 2015-12-02 | 四川大学 | Internal-external conformal multi-blade collimator and conformal method thereof |
| CN106037773A (en) * | 2016-05-20 | 2016-10-26 | 青岛市市立医院 | Blade position real-time monitoring system of MLC (multi-leaf collimator) system |
| CN106964079A (en) * | 2017-04-11 | 2017-07-21 | 宋继福 | It is a kind of to be used for the leafy collimator apparatus of tomography radiotherapy and dynamic intensity-modulated radiation therapy |
| CN108079445A (en) * | 2018-01-26 | 2018-05-29 | 戴建荣 | Cage radiotherapy unit |
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| CN104658629A (en) * | 2013-11-20 | 2015-05-27 | 上海联影医疗科技有限公司 | Blade driving structure and multi-blade collimator |
| CN104835547A (en) * | 2014-02-11 | 2015-08-12 | 上海联影医疗科技有限公司 | Multi-blade collimator |
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| CN109791810A (en) * | 2016-07-06 | 2019-05-21 | 克莱姆森大学研究基金会 | Radiation delivery arrangement and its application |
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| WO2019196897A1 (en) * | 2018-04-12 | 2019-10-17 | 西安大医数码科技有限公司 | Multi-leaf collimator and radiotherapy device |
| US11524177B2 (en) | 2018-04-12 | 2022-12-13 | Our United Corporation | Multi-leaf collimator and radiotherapy equipment |
| CN108379749A (en) * | 2018-04-12 | 2018-08-10 | 西安大医数码科技有限公司 | Multi-diaphragm collimator and radiotherapy equipment |
| US11497936B2 (en) | 2019-07-12 | 2022-11-15 | Shanghai United Imaging Healthcare Co., Ltd. | Multi-leaf collimator |
| US11771922B2 (en) | 2019-07-12 | 2023-10-03 | Shanghai United Imaging Healthcare Co., Ltd. | Multi-leaf collimator |
| WO2021007707A1 (en) * | 2019-07-12 | 2021-01-21 | Shanghai United Imaging Healthcare Co., Ltd. | Multi-leaf collimator |
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| CN115804918B (en) * | 2022-12-01 | 2024-03-22 | 中科超精(南京)科技有限公司 | Control method and system of multi-leaf collimator |
| CN116196027A (en) * | 2023-04-28 | 2023-06-02 | 赛诺威盛科技(北京)股份有限公司 | CT scanning equipment and scanning method for reducing CT radiation in adaptive scanning area |
| CN116196027B (en) * | 2023-04-28 | 2023-12-22 | 赛诺威盛科技(北京)股份有限公司 | CT scanning equipment and scanning method for reducing CT radiation in adaptive scanning area |
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