CN207152891U - A kind of multi-leaf raster leaf arrangement - Google Patents
A kind of multi-leaf raster leaf arrangement Download PDFInfo
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- CN207152891U CN207152891U CN201720146926.0U CN201720146926U CN207152891U CN 207152891 U CN207152891 U CN 207152891U CN 201720146926 U CN201720146926 U CN 201720146926U CN 207152891 U CN207152891 U CN 207152891U
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Abstract
The utility model discloses a kind of multi-leaf raster leaf arrangement, including the two groups of grating being laid in below radioactive source blades, the structure snd size all same of grating blade described in two groups, grating blade described in two groups complements each other to form a variety of launched field shapes, the top surface of grating blade is coplanar described in two groups, and the bottom surface of grating blade described in two groups is coplanar, every group of grating blade includes the first blade laid successively from centre to both sides, second blade and third blade, first blade, the quantity of second blade and third blade is multiple, and first blade, second blade and third blade are waiting the projection width of median plane to differ.The utility model is novel in design rationally, simple in construction, occupy little space, manufacturing cost it is low, conformal degree is good, by the blade for setting three kinds of width, there is provided higher conformal degree, by the way that blade is laid according to different reasonable wides, the volume of multi-leaf optical grating is reduced, it is practical.
Description
Technical field
The utility model belongs to technical field of medical equipment, and in particular to for linear accelerator during a kind of conformal therapy
Multi-leaf optical grating arrangement.
Background technology
Multi-leaf optical grating is born from nineteen sixty-five and after first time use, obtains swift and violent development and be widely applied.It is leafy
Grating is initially used to substitute shield block, forms desired launched field shape, carries out classical conformal therapy.Compared with shield block,
Multi-leaf optical grating has significant advantage：First, the efficiency of conformal therapy can be greatly improved, it is easy to operate；Second, multi-leaf optical grating can be with
Recycling, forms a variety of launched field shapes, avoids manufacturing harmful pollution caused by polytype shield block, and leafy light
The use of grid effectively prevent using pernicious gas caused by shield block and dust；3rd, multi-leaf optical grating also extensive use
In rotary irradiation, in the radioactive source rotary course, launched field shape can follow the projection of shape of target area to change；4th, it is more
When leaf grating is applied in IMRT, by controlling the motion of multi-leaf raster leaf, desired dosage point can be realized
Cloth.It is widely applied the standard configuration of collimater when having made multi-leaf optical grating turn into the treatment of part clinac.Leafy light
The appearance of grid promotes clinical practice that is conformal, adjusting the radiotherapy technology such as strong.But the multi-leaf optical grating used at present is also present
Shortcoming：
First, existing multi-leaf raster leaf is wider, and because used multi-leaf optical grating uses wide blade more
Design, not only space-consuming is big, also there is conformal degree it is relatively low the problem of.
Second, existing multi-leaf optical grating uses Multi-layer design, and space-consuming is larger, also asks there is manufacturing cost is higher
Topic.
Therefore, nowadays lack it is a kind of it is simple in construction, occupy little space, manufacturing cost is low, reasonable in design, conformal degree is high
Multi-leaf optical grating, pass through set three kinds of width blade, there is provided higher conformal degree, by by blade according to different reasonable wides
Lay, solve the problems such as multi-leaf optical grating conformal degree is relatively low, and space-consuming is larger, and manufacturing cost is higher.
Utility model content
Technical problem to be solved in the utility model is to be directed to above-mentioned deficiency of the prior art, there is provided a kind of leafy
Grating blade arrangement structure, it is novel in design rationally, occupy little space, manufacturing cost it is low, conformal degree is higher, passes through and sets three kinds
The blade of width, there is provided higher conformal degree, by the way that blade is laid according to different reasonable wides, reduce multi-leaf optical grating and account for
Space, it is practical, it is easy to promote the use of.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of multi-leaf raster leaf arrangement knot
Structure, it is characterised in that：Including the two groups of grating being laid in below radioactive source blades, the structure snd size of grating blade described in two groups
All same, grating blade described in two groups complement each other to form a variety of launched field shapes, and the top surface of grating blade is coplanar described in two groups, and
The bottom surface of grating blade is coplanar described in two groups, and grating blade described in every group includes the first leaf laid successively from centre to both sides
Piece, the second blade and third blade, the quantity of first blade, the second blade and third blade are multiple, and the first leaf
Piece, the second blade and third blade are differed waiting projection width of median plane.
A kind of above-mentioned multi-leaf raster leaf arrangement, it is characterized in that：Grating blade described in two groups includes being laid in institute
State first below radioactive source group of grating blade and be laid in below the radioactive source and positioned at first group of grating blade rear
Second group of grating blade, first group of grating blade and second group of grating blade are symmetrical on center line, first group of light
The top surface of grid blade and second group of grating blade is coplanar, and the bottom surface of first group of grating blade and second group of grating blade is total to
Face.
A kind of above-mentioned multi-leaf raster leaf arrangement, it is characterized in that：The quantity of first blade is 30, and the
One blade is 5mm in the projection width for waiting median plane, and the quantity of second blade is 20, and the second blade is waiting median plane
Projection width be 7.5mm, the quantity of the third blade is 10, and third blade is in the projection width for waiting median plane
10mm。
A kind of above-mentioned multi-leaf raster leaf arrangement, it is characterized in that：First blade, the second blade and the 3rd leaf
The top surface of piece each parallel to waiting median plane, the bottom surface of first blade, the second blade and third blade each parallel to etc. center
Face.
A kind of above-mentioned multi-leaf raster leaf arrangement, it is characterized in that：Throwing of the grating blade on median plane is waited
Shadow area is 400mm × 200mm.
The utility model has advantages below compared with prior art：
1st, the utility model is by setting the first different blade of width, the second blade and third blade, the first blade,
The quantity of two blades and third blade is multiple, and the first blade, the second blade and third blade are waiting the projection of median plane
Width differs, the combination of this grating blade, improves the conformal degree of multi-leaf optical grating, makes conformal in small treatment open country
Treatment is more accurate, is easy to promote the use of.
2nd, the utility model uses the grating blade of different in width, and the grating blade of different in width is carried out reasonably
Lay, avoid caused by traditional multi-leaf optical grating is used uniformly the design that on median plane is waited projection width is 10mm grating blades
The problem of larger conformal degree of space-consuming is relatively low, the installing space of saving can accordingly increase the treatment space of conformal therapy, can
By stable, using effect is good.
3rd, the utility model is novel in design rationally occupies little space, and grating blade top surface is coplanar, bottom surface is coplanar, and middle
Using the first blade, both sides use the second blade and third blade, and grating blade system is avoided under the premise of guarantee is high performance
One using waiting median plane projection width to be less than, manufacturing process caused by 5mm grating blades is complicated and production cost is higher asks
Topic, it is practical, it is easy to promote the use of.
In summary, the utility model is novel in design rationally, simple in construction, occupy little space, manufacturing cost it is low, conformal degree
It is good, pass through the blade that three kinds of width are set, there is provided higher conformal degree, by by blade according to different reasonable wide cloth
It is practical if reducing the volume of multi-leaf optical grating, it is easy to promote the use of.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is use state figure of the present utility model.
Fig. 3 is Fig. 2 left view.
Fig. 4 is the structural representation of the utility model grating blade.
Description of reference numerals:
1-the first group grating blade；2-the second group grating blade；The blades of 1-1-first；
The blades of 1-2-second；1-3-third blade；4-center line；
5-wait median plane.
Embodiment
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the utility model includes two groups of grating blades being laid in below radioactive source,
The structure snd size all same of grating blade described in two groups, grating blade described in two groups complement each other to form a variety of launched field shapes,
The top surface of grating blade is coplanar described in two groups, and the bottom surface of grating blade described in two groups is coplanar, and grating blade wraps described in every group
Include the first blade 1-1 laid successively from centre to both sides, the second blade 1-2 and third blade 1-3, the first blade 1-1,
Second blade 1-2 and third blade 1-3 quantity is multiple, and the first blade 1-1, the second blade 1-2 and third blade 1-3
Differed waiting projection width of median plane 5.
In actual use, grating blade described in every group is using the design of three kinds of width, and when arranging from centre to
Both sides are followed successively by the first blade 1, the second blade 2 and third blade 3, and such lay causes first group of grating blade 1 and second
The conformal degree that group grating blade 2 forms launched field shape when carrying out conformal therapy reaches highest.
In the present embodiment, grating blade described in two groups includes being laid in first group of grating blade 1 below the radioactive source
Be laid in below the radioactive source and positioned at second group of grating blade 2 at first group of rear of grating blade 1, first group of light
Grid blade 1 and second group of grating blade 2 are symmetrical on center line 4, first group of grating blade 1 and second group of grating blade 2
Top surface it is coplanar, the bottom surface of first group of grating blade 1 and second group of grating blade 2 is coplanar.
In the present embodiment, the quantity of the first blade 1-1 is 30, and the first blade 1-1 is waiting the projection of median plane 5
Width is 5mm, and the quantity of the second blade 1-2 is 20, and the second blade 1-2 is in the projection width for waiting median plane 5
7.5mm, the third blade 1-3 quantity are 10, and third blade 1-3 is 10mm waiting the projection width of median plane 5.
In the present embodiment, the first blade 1-1, the second blade 1-2 and third blade 1-3 top surface each parallel to etc. in
Heart face 5, the first blade 1-1, the second blade 1-2 and third blade 1-3 bottom surface each parallel to etc. median plane 5.
In the present embodiment, projected area of the grating blade on median plane 5 is waited described in every group is 400mm × 200mm, two groups
The total projection area of the grating blade is 400mm × 400mm.
The utility model to first group of grating blade 1 in use, lay, by 30 first blade 1-1 first
Centre position is laid in, the second blade 1-2 is respectively then laid 10 on the first blade 1-1 outside both sides, then by the 3rd
Blade 1-3 respectively lays 5 on the second blade 1-2 outside both sides, is then completed according to the distribution method of first group of grating blade 1
The laying of second group of grating blade 2, second group of grating blade 2 is described positioned at the rear of first group of grating blade 1 after the completion of laying
The total projection area of first group of grating blade 1 and second group of grating blade 2 on median plane 5 is waited is 400mm × 400mm.Entering
During row conformal therapy, the part grating blade adjusted by motor in first group of grating blade 1 and second group of grating blade 2 is carried out
It is mobile, make to form desired launched field shape between grating blade described in two groups, improve the efficiency of radiotherapy.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is imposed any restrictions, every
Any simple modification, change and the equivalent structure change made according to the utility model technical spirit to above example, still
Belong in the protection domain of technical solutions of the utility model.
Claims (5)
- A kind of 1. multi-leaf raster leaf arrangement, it is characterised in that：Including the two groups of grating being laid in below radioactive source blades, The structure snd size all same of grating blade described in two groups, grating blade described in two groups complement each other to form a variety of launched field shapes, The top surface of grating blade is coplanar described in two groups, and the bottom surface of grating blade described in two groups is coplanar, and grating blade wraps described in every group Include the first blade (1-1) laid successively from centre to both sides, the second blade (1-2) and third blade (1-3), first leaf The quantity of piece (1-1), the second blade (1-2) and third blade (1-3) is multiple, and the first blade (1-1), the second blade (1-2) and third blade (1-3) are differed waiting projection width of median plane (5).
- 2. according to a kind of multi-leaf raster leaf arrangement described in claim 1, it is characterised in that：Grating blade described in two groups Including first group of grating blade (1) being laid in below the radioactive source and it is laid in below the radioactive source and positioned at first group Second group of grating blade (2) at grating blade (1) rear, first group of grating blade (1) and second group of grating blade (2) are closed In center line (4) symmetrically, the top surface of first group of grating blade (1) and second group of grating blade (2) is coplanar, described first group The bottom surface of grating blade (1) and second group of grating blade (2) is coplanar.
- 3. according to a kind of multi-leaf raster leaf arrangement described in claim 1 or 2, it is characterised in that：First blade The quantity of (1-1) is 30, and the first blade (1-1) is 5mm waiting the projection width of median plane (5), second blade (1-2) Quantity be 20, and the second blade (1-2) is 7.5mm waiting the projection width of median plane (5), the third blade (1-3) Quantity be 10, and third blade (1-3) is 10mm waiting the projection width of median plane (5).
- 4. according to a kind of multi-leaf raster leaf arrangement described in claim 1 or 2, it is characterised in that：First blade (1-1), the second blade (1-2) and third blade (1-3) top surface each parallel to etc. median plane (5), the first blade (1- 1), the bottom surface of the second blade (1-2) and third blade (1-3) each parallel to etc. median plane (5).
- 5. according to a kind of multi-leaf raster leaf arrangement described in claim 1 or 2, it is characterised in that：The grating blade Projected area on median plane (5) is waited is 400mm × 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720146926.0U CN207152891U (en) | 2017-02-16 | 2017-02-16 | A kind of multi-leaf raster leaf arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720146926.0U CN207152891U (en) | 2017-02-16 | 2017-02-16 | A kind of multi-leaf raster leaf arrangement |
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| CN207152891U true CN207152891U (en) | 2018-03-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124213A (en) * | 2019-05-15 | 2019-08-16 | 上海联影医疗科技有限公司 | A kind of multi-leaf optical grating and the radiotherapy unit with the multi-leaf optical grating |
-
2017
- 2017-02-16 CN CN201720146926.0U patent/CN207152891U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124213A (en) * | 2019-05-15 | 2019-08-16 | 上海联影医疗科技有限公司 | A kind of multi-leaf optical grating and the radiotherapy unit with the multi-leaf optical grating |
| US11331517B2 (en) | 2019-05-15 | 2022-05-17 | Shanghai United Imaging Healthcare Co., Ltd. | Multi-leaf collimator and radiation therapy device |
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