CN104015358B - A kind of manufacture method encoding collimator - Google Patents
A kind of manufacture method encoding collimator Download PDFInfo
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- CN104015358B CN104015358B CN201410242613.6A CN201410242613A CN104015358B CN 104015358 B CN104015358 B CN 104015358B CN 201410242613 A CN201410242613 A CN 201410242613A CN 104015358 B CN104015358 B CN 104015358B
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- block
- base
- sidepiece
- collimator
- filling
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Abstract
The invention discloses a kind of manufacture method encoding collimator, including: metal derby is carried out cutting and prepares multiple blocks；Printed by 3D and prepare base, described base includes bottom, sidepiece and is positioned at multiple filling blocks of the cavity that described bottom is surrounded with described sidepiece, being formed with multiple mounting groove between the plurality of filling block, wherein, described bottom, sidepiece and filling block are integrally formed；The plurality of block is installed in multiple mounting grooves of described base；Described base is bound.The manufacture method of the coding collimator of the present invention, the mode using 3D to print makes base so that the design of base and comparison are freely, it is convenient to the coded number needed for selection, amendment dimensional parameters.And technique is simple, efficient, cost is little.
Description
Technical field
The present invention relates to a kind of manufacture method encoding collimator, be specially one for BIOImaging Analyzer
Coding collimator manufacture method.
Background technology
Coded imaging technology is to improve the technology of transmitance by increasing percent opening in a specific manner, special
It is not applicable to X and gamma-ray high-efficient detection and imaging.Coding collimator is critical component therein
One of, common coding perforate mode have MURA (Modified Uniformly Redundant Arrays,
Revise uniform redundant array) and RA (Random Arrays, random array) etc..
As a example by MURA, Fig. 1 show the MURA coded image that coded number is 19, wherein,
White portion is the penetrating region of gamma ray, and black region is the barrier zones of gamma ray.At coding
In the realization of collimator, its black region can use heavy metal block preferable to gamma-rays blocking capability,
White portion should be the perforate allowing Radiolucent.Black region and the arrangement side of white portion from Fig. 1
Block, it can be seen that black block is from each other without supporting, is entered by formula the most well by specific pattern
Row is installed, and to ensure stability and the installation accuracy of structure, is that coding collimator makes the required master solved
Want problem.
Summary of the invention
For solving above-mentioned technical problem, the invention provides a kind of manufacture method encoding collimator, including:
Metal derby is carried out cutting and prepares multiple blocks；Being printed by 3D and prepare base, described base includes the end
Portion, sidepiece and be positioned at multiple filling blocks of the cavity that described bottom and described sidepiece are surrounded, in institute
State and between multiple filling block, be formed with multiple mounting groove, wherein, described bottom, sidepiece and filling block one
Formed；The plurality of block is installed in multiple mounting grooves of described base；Described base is sealed
Top.
According to an embodiment of the present invention, described filling block is cuboid, at four of described cuboid
Chamfering it is respectively arranged with along the limit of short transverse.
According to another embodiment of the present invention, described filling block is equal with the height of described block.
According to another embodiment of the present invention, use epoxy glue that described base is bound.
According to another embodiment of the present invention, described base is bound by the mode using 3D to print,
Make the outside one of collimator seamless.
According to another embodiment of the present invention, the sidepiece at described base offers installing hole.
According to another embodiment of the present invention, the material of described block is selected from uranium, platinum, gold, tungsten, lead
Or comprise one of which or several alloys.
According to another embodiment of the present invention, described block is tungsten-nickel-copper alloy.
According to another embodiment of the present invention, described 3D printed material is light material.
According to another embodiment of the present invention, described 3D printed material is ABS resin.
The manufacture method of the coding collimator of the present invention, the mode using 3D to print makes base so that
The design of base and comparison are freely, it is convenient to the coded number needed for selection, amendment dimensional parameters.
And technique is simple, efficient, cost is little, and fabrication cycle is short.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of MURA coding；
Fig. 2 is the perspective view of the coding collimator of one embodiment of the invention；
Fig. 3 is the partial top view of the coding collimator of one embodiment of the invention；
Fig. 4 is the flow chart of a kind of manufacture method encoding collimator of the present invention.
Wherein, description of reference numerals is as follows:
1, base；2, block；11, filling block；12, chamfering；13, installing hole.
Detailed description of the invention
Embodiment feature of present invention will describe the most in detail with the exemplary embodiments of advantage.Ying Li
Solve is that the present invention can have various changes in different embodiments, and it is all without departing from the present invention's
Scope, and explanation therein and be shown in and be substantially treated as purposes of discussion, and be not used to limit the present invention.
The existing coding collimator prepared according to MURA coding pattern, without supporting mutually between block,
For making each block more firm, it is integrated with base bottom that present invention employing is made up of light material
Filling block fills perforate, both can ensure that gamma ray can pass through well, provided support for block again.
As in figure 2 it is shown, the coding collimator of the embodiment of the present invention includes base 1 and multiple block 2, its
In, base 1 include horizontal positioned bottom, along bottom edge to base 1 short transverse (vertically side
To) extend the sidepiece formed and be positioned at multiple filling blocks 11 of the cavity that bottom is surrounded with sidepiece,
Bottom, sidepiece one-body molded with filling block 11.
Filling block 11 is a cuboid, including four of the upper and lower surface of upper surface, lower surface and connection
Side.Lower surface is one-body molded with the bottom connection of base 1, and four sides are equal with the sidepiece of base 1
OK.The side of four filling blocks 11 and bottom surround a rectangular-shaped mounting groove.Block 2 is positioned at peace
In tankage.
Block 2 is and the cuboid of mounting groove mating shapes, its height and the height phase of filling block 11
With, it is slightly less than the height of sidepiece so that after epoxy glue or other material bind, the surface of collimator can
Holding level.
In the present invention, chamfering can be set along the limit of short transverse at four of filling block 11 side, make
The crossing part obtaining two sides is become the transition face of arc from side.
In the present invention, concrete shape and size to base, filling block and block are not particularly limited, can
Select corresponding shape, size as required.
In the present invention, the arrangement mode of block 2 in coding collimator with filling block 11 is not limited,
Can be according to actual needs according to MURA coding or the arrangement of other coded system.
As shown in Figure 4, invention further provides the manufacture method of above-mentioned coding collimator, including with
Lower step:
Block cuts
According to required coding pattern and size, metal derby is carried out cutting and make block 2.In the present invention,
Can be pure metals preferable to gamma ray blocking capability for making the heavy metal of block 2, such as
Uranium, platinum, gold, tungsten, lead etc., it is also possible to for the alloy of above-mentioned simple substance.Consider cost, processability, property
The factor of the aspects such as energy, preferably uses high-specific gravity tungsten alloy, such as tungsten-copper alloy.In present embodiment,
Block 2 is cut by the tungsten ambrose alloy of 95% and prepares.In the present invention, the cutting mode of heavy metal does not limit,
The mode that line can be used to cut carries out heavy metal block cutting.
Base makes
Base 1 uses 3D printing and making, selected printed material to be ABS resin；In the present invention,
The material of base is not particularly limited, can be to be suitable to the light material that 3D prints.
In the present invention, size, the shape of base 1 is not particularly limited, can select according to actual needs
Suitable size.There is certain thickness (i.e. aforementioned height) bottom base 1, such as, can be 1mm；Fill out
Fill block 11 to extend along substructure height direction from bottom and formed, and be parallel to sidepiece, in base 1, many
The mounting groove accommodating block 2 it is formed with between individual filling block 11.The height of filling block 11 and block 2
Highly consistent, can be 8mm, be positioned at a little higher than filling block of sidepiece 11 and the height of block 2 of periphery,
Can be such as 10mm.
As it is shown on figure 3, for ease of the insertion of follow-up block 2, can be on four edges of filling block 11 side
On the limit of short transverse, chamfering is set so that the crossing part of two sides is become the transition of arc from side
Face.
In the present invention, the sidepiece of base 1 can be processed into the arbitrary shape being easily installed, also can be at base
The sidepiece processing mounting holes 13 of 1, installing hole 13 can coordinate with die cover and is fixed on equipment by collimator.
Block is installed
By in the mounting groove of metal backup 2 inserted base 1 of well cutting.
Bind
After installing block 2, can use that high strength epoxy is bonding to bind, make block 2 be fixed on the end
In seat 1, owing to the height of filling block 11 and block 2 is less than the height of base sidepiece, glue can be made to seal
Plane keeps concordant with base sidepiece.In the present invention, the concrete mode binding coding collimator does not limit
Fixed, the mode that such as may be used without 3D printing binds so that the outside one of collimator is the most seamless；?
After can coordinate with die cover by being opened in the installing hole 13 of base 1 sidepiece, insert shielding in a mold
Cover after block on mould, fix and be assembled into an entirety, it is simple to place and use.Wherein, to die cover
Shape there is no particular limitation.
Be ready to use in bind glue cooling, solidification after, i.e. obtain finished product coding collimator.
In the present invention, the making of coding collimator is not limited to above-mentioned sequence, can be according to practical situation to above-mentioned
The order of each step is adjusted.
The mode that the present invention uses 3D to print makes base, bottom it, sidepiece one-body molded with filling block,
The design and the comparison that make base are free, it is convenient to the coded number needed for selection, amendment size ginseng
Number.
The coding collimator of the present invention, bottom and filling block are one-body molded, and on the one hand bottom is played support and filled out
Fill the effect of block, on the other hand can as one " substrate " so that the control of filling block positional precision,
The positional precision of filling block determines the positional precision of block.Cutting is all used compared to filling block and block
In bulk, and in the way of " playing with building blocks ", it is installed on the collimator of base, the coding collimator of the present invention exists
The error occurred in manufacturing process is less, and the degree of accuracy that block is arranged with filling block is higher.
The present invention is the manufacture method of explanation coding collimator as a example by MURA encodes, and the method is the suitableeest
Encode for other, as RA encodes.And the method technique that the present invention provides is simply, efficiently, cost is little,
Fabrication cycle is short.As used die sinking to make mould of plastics, then Mold Making cost relatively, highly difficult relatively big,
And mould just cannot change once carrying out this design, need to make again to manufacture the collimator of different coding pattern
Make corresponding mould, so that process is increasingly complex；As used traditional handicraft single processing plastic mounting
The most difficult control accuracy of base, and processing cost is higher, difficulty of processing is the biggest.
In the present invention, the chamfer design of filling block is easy to the insertion of block, owing to chamfering space is less, adopts
Bigger by Mold Making difficulty；It is the highest that risk is then processed in single-piece work；And use 3D print can be well
Realize.
In the present invention, the height of filling block is highly consistent with block, and block can be avoided to be formed at filling block
Mounting groove in occur crooked, affect installation accuracy.
Although with reference to exemplary embodiment describing the present invention, it is to be understood that, term used is explanation
With exemplary and nonrestrictive term.Do not take off owing to the present invention can be embodied as in a variety of forms
From spirit or the essence of invention, it should therefore be appreciated that above-described embodiment is not limited to any aforesaid details,
And should explain widely in the spirit and scope that appended claims are limited, therefore fall into claim
Or whole changes and the remodeling in its equivalent scope all should be appended claims and contained.
Claims (9)
1. encode a manufacture method for collimator, including:
Metal derby is carried out cutting and prepares multiple blocks；
By 3D print prepare base, described base include bottom, sidepiece and be positioned at described bottom with
Multiple filling blocks in the cavity that described sidepiece is surrounded, are formed multiple between the plurality of filling block
Mounting groove, wherein, described bottom, sidepiece and filling block are integrally formed；
The plurality of block is installed in multiple mounting grooves of described base；
Described base is bound.
Method the most according to claim 1, wherein, described filling block is cuboid, described rectangular
Four of body are respectively arranged with chamfering along the limit of short transverse.
Method the most according to claim 1, wherein, described filling block is equal with the height of described block.
Method the most according to claim 1, wherein, uses epoxy glue to bind described base.
Method the most according to claim 1, wherein, described base is carried out by the mode using 3D to print
Bind so that the outside one of coding collimator is seamless.
Method the most according to claim 1, wherein, the sidepiece at described base offers installing hole.
Method the most according to claim 1, wherein, the material of described block selected from uranium, platinum, gold,
Tungsten, lead or comprise one of which or several alloys.
Method the most according to claim 7, wherein, described block is tungsten-nickel-copper alloy.
Method the most according to claim 1, wherein, described 3D printed material is ABS resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242613.6A CN104015358B (en) | 2014-06-03 | 2014-06-03 | A kind of manufacture method encoding collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242613.6A CN104015358B (en) | 2014-06-03 | 2014-06-03 | A kind of manufacture method encoding collimator |
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| CN104015358A CN104015358A (en) | 2014-09-03 |
| CN104015358B true CN104015358B (en) | 2016-10-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL3374182T3 (en) | 2015-11-09 | 2020-11-16 | Signify Holding B.V. | 3d printing of objects with optical functional surfaces |
| CN108318911B (en) * | 2018-04-04 | 2024-02-27 | 中国科学院高能物理研究所 | Coding plate |
| CN110421166A (en) * | 2019-07-31 | 2019-11-08 | 吴召平 | Metal laser cladding prints two-dimensional collimator material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1634617A (en) * | 2003-12-31 | 2005-07-06 | 深圳市尊瑞科技有限公司 | Collimation aperture variable collimation device and varying method thereof |
| CN1971767A (en) * | 2005-11-25 | 2007-05-30 | 连卫东 | Manufacturing method of conformal intensity modulated collimator |
| CN101228460A (en) * | 2005-05-23 | 2008-07-23 | 秦内蒂克有限公司 | Coded aperture imaging system |
| CN101400974A (en) * | 2006-03-09 | 2009-04-01 | 泰萨莱有限责任公司 | Microarray imaging system and associated methodology |
| CN102890974A (en) * | 2012-10-16 | 2013-01-23 | 中国科学院高能物理研究所 | Coded aperture imaging system and coding code plate thereof |
-
2014
- 2014-06-03 CN CN201410242613.6A patent/CN104015358B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1634617A (en) * | 2003-12-31 | 2005-07-06 | 深圳市尊瑞科技有限公司 | Collimation aperture variable collimation device and varying method thereof |
| CN101228460A (en) * | 2005-05-23 | 2008-07-23 | 秦内蒂克有限公司 | Coded aperture imaging system |
| CN1971767A (en) * | 2005-11-25 | 2007-05-30 | 连卫东 | Manufacturing method of conformal intensity modulated collimator |
| CN101400974A (en) * | 2006-03-09 | 2009-04-01 | 泰萨莱有限责任公司 | Microarray imaging system and associated methodology |
| CN102890974A (en) * | 2012-10-16 | 2013-01-23 | 中国科学院高能物理研究所 | Coded aperture imaging system and coding code plate thereof |
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| CN104015358A (en) | 2014-09-03 |
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Effective date of registration: 20180907 Address after: 100043 302, 3 floor, 1 building, 18 Shixing East Street, Shijingshan District, Beijing. Patentee after: BEIJING HIGH ENERGY NEW TECHNOLOGY CO., LTD. Address before: 100049 Beijing Shijingshan District 19 Yuquanlu Road No. 2 hospital Patentee before: High Energy Physics Inst., Chinese Academy of Sciences |
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