CN102879798B - For the scintillation detector of ray imaging device - Google Patents
For the scintillation detector of ray imaging device Download PDFInfo
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- CN102879798B CN102879798B CN201210397420.9A CN201210397420A CN102879798B CN 102879798 B CN102879798 B CN 102879798B CN 201210397420 A CN201210397420 A CN 201210397420A CN 102879798 B CN102879798 B CN 102879798B
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Abstract
The invention discloses a kind of scintillation detector for ray imaging device, comprising: scintillator arrays, it is for receiving radioactive ray and sending passage of scintillation light; Photocon, has receiving plane and output face, the scintillator cells that described receiving plane is connected to, and it is for receiving and transmitting the passage of scintillation light that this scintillator sends; Detector, it is connected to the output face of described photocon, for receiving the passage of scintillation light of photocon transmission; The receiving plane of photocon and output face have the joint-cutting of formation " well " word shape, and are filled with material passage of scintillation light to reflection potential in every bar joint-cutting.The present invention improves the transfer efficiency at photocon edge by the design of fairly simple photocon, improve the position resolution of detector, and processing technology is simple.
Description
Technical field
The present invention relates to a kind of detector, more specifically, relate to a kind of scintillation detector for ray imaging device.
Background technology
Radiographic techniques is that radioactive ray (as X ray and gamma-rays etc.) is as medium, the structure of the detected object that acquisition represents with image format or function information, for corresponding industry provides the various technological means diagnosed observed object, detect and monitor, be widely used in the industries such as health care, public safety and high-end manufacturing industry.Detector is the important component part of radiation imaging apparatus.Detector for detecting radioactive ray generally has the types such as gas detector, scintillation detector, semiconductor detector, and wherein the use of scintillation detector is the most extensive.
Scintillation detector is generally made up of scintillator and photodetector.Scintillator receives ray, and have an effect with it and it is converted into passage of scintillation light, the blinking light received is converted into the electric signal being easily identified and processing by photodetector.The scintillation crystal array that the common form of scintillator is difform independent scintillator or is made up of scintillator cells.The generation of passage of scintillation light in scintillation detector, transmission, detection process are the critical process realizing X-ray detection X imaging.
In large-scale radiation imaging apparatus, for solving detection dead-time problem, generally can add a photocon between scintillation crystal array and photomultiplier.Between optical flare unit 1 and photodetector 2, a fibre-optic light guide element 3 is used in scintillation detector as ray imaging device disclosed in Chinese patent (CN1740819A), as shown in Figure 1, but can not differ greatly because the manufacturing process of fibre-optic light guide element 3 limits fibre-optic light guide element 3 two ends area, otherwise the printing opacity homogeneity of fibre-optic light guide element 3 is deteriorated, edge differs comparatively large with middle transmittance, thus the resolution that dips.And the manufacture craft of fibre-optic light guide element and cost larger.
And for example relate to a kind of radiation detector and preparation method thereof realizing high-resolution, high image quality in Jap.P. (2007078567A), wherein photocon 3 designs as shown in Figure 2, photocon 3 is by the scintillation crystal array 1 of larger area and four discrete photodetectors 2 compared with small size, and the side of photocon 3 is the plane of diclinic degree.The one side that photocon 3 is coupled with scintillation crystal array 1 inserts many light reflecting materials, wherein angled with coupling surface near one of the side of photocon 3; The another side of photocon 3 is coupled with photodetector 2 by coupling material.The photocon 3 of such design is by the reflecting material of side and insertion, change the transmission path of passage of scintillation light 4 in photocon 3, realize the differentiation to different crystal bar in scintillation crystal array 1, and by reflectorized material insertion position, the design of inserting angle and laterally inclined angle, improve the problem that light guide edges brings due to passage of scintillation light transmission dispersion, improve the position resolution of detector.But because photocon 3 side rake angle and insertion reflecting material angle are subject to the restriction of the size of scintillation crystal unit 1 and photodetector 2, and photocon 3 is needing to set up different transmission regions separately from photodetector 2 one end that is coupled, to be coupled with corresponding photodetector 2, photocon 3 is caused to process more complicated thus, and this photocon design is limited to the use of photodetector 2, reduces the reliability of detection system.
Thus, a kind of structure is simple, and the scintillation detector of the ray imaging device of dependable performance becomes this area problem demanding prompt solution.
Summary of the invention
The invention provides a kind of scintillation detector for ray imaging device, comprising:
Scintillator arrays (1), it is for receiving radioactive ray and sending passage of scintillation light;
Photocon (3), has receiving plane (31) and output face (32), and described receiving plane is connected to described scintillator cells (1), and it is for receiving and transmitting the passage of scintillation light that this scintillator sends;
Detector (2), it is connected to the output face (32) of described photocon (3), for receiving the passage of scintillation light that photocon (2) transmits;
The receiving plane (31) of described photocon (3) has first group of joint-cutting (311), the output face (32) of described photocon (3) has second group of joint-cutting (321), often organize joint-cutting and comprise four joint-cuttings, article four, joint-cutting is parallel between two, and vertical with all the other two joint-cuttings, form " well " shape; First group of joint-cutting (311) is vertical with receiving plane (31), tangential output face (32) and not running through; Second group of joint-cutting (321) is vertical with output face (32), tangential receiving plane (31) and not running through; And be filled with material passage of scintillation light to reflection potential in every bar joint-cutting.
Described photocon (3) is: relatively and be the identical rectangle of shape, and peripheric surface is the hexahedron of shape identical rectangular for receiving plane (31) and output face (32); Or described photocon (3) is: receiving plane (31) and output face (32) relatively and be the rectangle that shape is identical, area is different, and the peripheric surface trapezoidal prism-frustum-shaped hexahedron that to be shape identical.
The degree of depth of first group of joint-cutting (311) and second group of joint-cutting (321) is between 2/1 to three/2nds of photocon (3) thickness.
Described reflecting material is diffuse-reflective material or specular reflective material.
Described reflecting material and described photocon (3) adopt Air Coupling or optical cement coupling.
The side of described photocon (3) is provided with reflecting material.
Reflecting material and the described photocon (3) of described photocon (3) side adopt optical cement coupling.
The area of the receiving plane (31) of described photocon (3) is greater than the area of the output face (32) of described photocon (3).
The side of described photocon (3) is smooth flat.
The present invention is by the particular design of photocon, achieve the passage of scintillation light uniform distribution that produced by scintillator cells each in the scintillator arrays object to each probe unit of photodetector, the signal that detector is obtained remains the positional information of ray preferably, energy information and event information; And this project organization is simple, easily processes, be conducive to the cost reducing detector and machine system.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of scintillation detector of prior art;
Fig. 2 is the structural representation of another scintillation detector of prior art;
Fig. 3 a is the photocon schematic top plan view of the scintillation detector for ray imaging device of the present invention;
Fig. 3 b is the photocon schematic side view of the scintillation detector for ray imaging device of the present invention;
Embodiment
Below in conjunction with accompanying drawing, illustrate the structure of the scintillation detector for ray imaging device of the present invention.
See Fig. 3 (a) and Fig. 3 (b), it illustrates a concrete structure of photocon of the present invention.The vertical view that Fig. 3 (a) is photocon, the side view that Fig. 3 (b) is photocon.
Scintillation detector for ray imaging device of the present invention has scintillator arrays 1, photodetector 2 and photocon 3.Scintillator arrays 1 is made up of multiple scintillator cells, for receiving radioactive ray and sending passage of scintillation light.Photocon 3 is made up of the material that light conductive performance is good, as organic glass, quartz glass, optical glass etc.Photocon 3 is upper and lower end faces (receiving plane 31 and output face 32) for the identical rectangle (containing square) of shape, peripheric surface are the hexahedron of the rectangle (containing square) that shape is identical.Or upper and lower end face is that shape is identical, the different rectangle of area (containing square), peripheric surface are the trapezoidal prism-frustum-shaped hexahedron that shape is identical.The receiving plane 31 of photocon 3 mates with scintillator cells 1, and receiving plane 31 is connected with the light gasing surface of scintillator arrays, and area is identical; The output face 32 of photocon 3 is connected with the receiving plane of photodetector 2.The receiving plane 31 of photocon 3 has first group of joint-cutting 311, output face 32 has second group of joint-cutting 321, and joint-cutting 311, joint-cutting 321 are all made up of four joint-cuttings, and four joint-cuttings are parallel between two, and vertical with all the other two joint-cuttings, forms " well " word shape.The joint-cutting 311 of receiving plane 31 is vertical with receiving plane 31, the tangential output face 32 of joint-cutting 311, and its degree of depth between 2/1 to three/2nds of the thickness of photocon 3, and does not run through; The joint-cutting 321 of output face 32 is vertical with output face 32, and the tangential receiving plane 31 of joint-cutting 321, its degree of depth between 2/1 to three/2nds of the thickness of photocon 3, and does not run through.The side 33 of photocon 3 is smooth flat.
In joint-cutting 311 on the receiving plane 31 of the photocon 3 of the scintillation detector for ray imaging device of the present invention, the center area of the groined type formed can be greater than the center area of the groined type that the joint-cutting 321 in output face 32 is formed, and also can be less than the center area of the groined type that the joint-cutting 321 in output face 32 is formed.
Other structures of scintillation detector for ray imaging device of the present invention and the structure of effect and prior art and effect and the connected mode between other structures and photocon 3 all same as the prior art, do not repeat them here.
As the preferred embodiment of the present invention, as shown in Fig. 3 (a), receiving plane 31 area of photocon 3 is identical with the passage of scintillation light output face shape of scintillator arrays and area, the face that " well " word shape that the solid line shown in joint-cutting 311(Fig. 3 a on it is formed is joint-cutting 311 one end on receiving plane 31) and the face of dotted line 321 one end shown in output face 32(Fig. 3 a) joint-cutting 321 degree of depth be all 2/1 to three/2nds of photocon thickness (distance of light receiving surface 31 and light gasing surface 32), four same sizes of the joint-cutting degree of depth of joint-cutting 311, four joint-cutting degree of depth of joint-cutting 321 are same size.All joint-cuttings are filled with light reflecting material.The height of the joint-cutting 311 shown in Fig. 3 (b) is upper, joint-cutting 321 is then the degree of depth of joint-cutting 311, joint-cutting 321, the degree of depth of the light reflecting material of namely filling in joint-cutting 311, joint-cutting 321.The reflecting material be filled in joint-cutting 311 and joint-cutting 321 can be diffuse-reflective material, specular reflective material.
The material enhancers that photocon 3 side of the scintillation detector for ray imaging device of the present invention can adopt photoemissivity good is to the reflection potential of passage of scintillation light.
The passage of scintillation light produced when scintillator cells each in scintillator arrays 1 by receiving plane 31 incidence of photocon 3 after, through being filled in the light reflecting material in the groined type joint-cutting 311 of receiving plane 31 and the reflection being filled in the light reflecting material in the groined type joint-cutting 321 of output face 32, form different transmission lines, passage of scintillation light is made to be transferred into output face 32 in different transmission lines, change the scope of the transmission path of passage of scintillation light, achieve single photocon and form multiple light transmission path, the generation light of different scintillator cells in scintillator arrays 1 is made to be dispensed to the different probe unit of photodetector, especially at the edge of photocon 3, i.e. 8 regions of the central opening surrounding of the groined type of the joint-cutting 311 of receiving plane 31 and joint-cutting 321 formation of output face 32, owing to adopting the scintillation detector for ray imaging device of the present invention, passage of scintillation light at groined type joint-cutting 311 edge of receiving plane 31 is transmitted from the optical channel formed between the lateral wall and the madial wall of photocon 3 of joint-cutting 311, output face 32 is transferred into again from the optical channel formed between the madial wall of photocon 3 and the lateral surface of the joint-cutting 321 of output face 32, thus the scintillator at scintillator cells edge that the edge overcoming photocon 3 brings due to passage of scintillation light transmission dispersion is difficult to the defect differentiated.
In practical operation, in conjunction with the position resolution scatter diagram that detector of the present invention is tested, the result of test is the center of detector 2, namely the groined type central opening of the groined type joint-cutting 321 of the output face 32 of photocon 3 and groined type central opening adjoin four regions result of detection for loose point evenly, substantially uninfluenced, be positioned at the result of detection in 4 each regions on 4 pin of groined type central opening for having obvious detectable signal, and result of detection impact is little.The scatter diagram of whole photocon test is put position substantially even, test result is good.
The scintillator cells 1 of the scintillation detector for ray imaging device of the present invention, photocon 3, photodetector 2 can be provided separately and combine, and also can be combined into an entirety.
The present invention has following advantage:
Photocon is inner, the selection of offside reflection material, the combination of photocon receiving plane and output face reflecting material insertion position, improved the transfer efficiency at photocon edge by the design of fairly simple photocon, improve the position resolution of detector, and processing technology is simple.
The above; be only the detailed description of preferred embodiment of the present invention and graphic; feature of the present invention is not limited thereto; all scopes of the present invention should be as the criterion with following scope; all embodiments according with the spirit change similar with it of the claims in the present invention protection domain; all should be contained in category of the present invention, anyly be familiar with this those skilled in the art in the field of the invention, can think easily and change or adjustment all can be encompassed in following claims of the present invention.
Claims (9)
1., for a scintillation detector for ray imaging device, it is characterized in that comprising:
Scintillator arrays (1), it is for receiving radioactive ray and sending passage of scintillation light;
Photocon (3), there is receiving plane (31) and output face (32), described receiving plane is connected to described scintillator arrays (1), and it is for receiving and transmitting the passage of scintillation light that this scintillator arrays (1) sends;
Detector (2), it is connected to the output face (32) of described photocon (3), for receiving the passage of scintillation light that photocon (3) transmits;
The receiving plane (31) of described photocon (3) has first group of joint-cutting (311), the output face (32) of described photocon (3) has second group of joint-cutting (321), often organize joint-cutting and comprise four joint-cuttings, article four, joint-cutting is parallel between two, and vertical with all the other two joint-cuttings, form " well " shape; First group of joint-cutting (311) is vertical with receiving plane (31), tangential output face (32) and not running through; Second group of joint-cutting (321) is vertical with output face (32), tangential receiving plane (31) and not running through; And be filled with material passage of scintillation light to reflection potential in every bar joint-cutting;
The center area of the groined type that the described first group of joint-cutting (311) on described receiving plane (31) is formed, is greater than or less than the center area of the groined type that the described second group of joint-cutting (321) in described output face (32) is formed;
The spacing of relative two joint-cuttings in the described first group of joint-cutting (311) on described receiving plane (31), is all greater than or is all less than the spacing of relative two joint-cuttings in the described second group of joint-cutting (321) in described output face (32).
2. scintillation detector as claimed in claim 1, it is characterized in that, described photocon (3) is hexahedron, relatively and be the rectangle that shape is identical, and the peripheric surface of described photocon (3) is shape identical rectangular for the receiving plane (31) of described photocon (3) and output face (32);
Or,
Described photocon (3) is prism-frustum-shaped hexahedron, the receiving plane (31) of described photocon (3) and output face (32) relatively and be the rectangle that shape is identical, area is different, and described photocon (3) peripheric surface that to be shape identical is trapezoidal.
3. scintillation detector as claimed in claim 1, it is characterized in that, the degree of depth of first group of joint-cutting (311) and second group of joint-cutting (321) is between 2/1 to three/2nds of photocon (3) thickness.
4. scintillation detector as claimed in claim 1, it is characterized in that, described reflecting material is diffuse-reflective material or specular reflective material.
5. scintillation detector as claimed in claim 1, it is characterized in that, described reflecting material and described photocon (3) adopt Air Coupling or optical cement coupling.
6. scintillation detector as claimed in claim 1, it is characterized in that, the side of described photocon (3) is provided with reflecting material.
7. scintillation detector as claimed in claim 6, it is characterized in that, reflecting material and the described photocon (3) of described photocon (3) side adopt optical cement coupling.
8. scintillation detector as claimed in claim 1, it is characterized in that, the area of the receiving plane (31) of described photocon (3) is greater than the area of the output face (32) of described photocon (3).
9. scintillation detector as claimed in claim 1, it is characterized in that, the side of described photocon (3) is smooth flat.
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| CN201210397420.9A CN102879798B (en) | 2012-10-18 | 2012-10-18 | For the scintillation detector of ray imaging device |
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| CN201210397420.9A CN102879798B (en) | 2012-10-18 | 2012-10-18 | For the scintillation detector of ray imaging device |
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| CN102879798B true CN102879798B (en) | 2016-01-06 |
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| CN104745470B (en) | 2013-12-30 | 2017-12-19 | 苏州瑞派宁科技有限公司 | A kind of multichannel epinephrine real-time monitoring device |
| CN104597475B (en) * | 2015-01-24 | 2017-11-14 | 东莞南方医大松山湖科技园有限公司 | Detector and preparation method thereof and the transmitting imaging device with the detector |
| CN105005069B (en) * | 2015-07-08 | 2018-08-28 | 清华大学 | Multi-gap resistive plate chamber detector |
| CN107167832A (en) | 2017-07-28 | 2017-09-15 | 苏州瑞派宁科技有限公司 | A kind of nuclear detector |
| CN108519616A (en) * | 2018-03-26 | 2018-09-11 | 重庆睿视兴科技有限公司 | A kind of scintillator design principle and method improving industry CT detectivity |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740819A (en) * | 2005-09-26 | 2006-03-01 | 中国科学院高能物理研究所 | The scintillation detector that is used for nuclear imaging device |
| CN1993632A (en) * | 2003-11-20 | 2007-07-04 | 杰克·E·朱尼 | Edge effects treatment for crystals |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004233240A (en) * | 2003-01-31 | 2004-08-19 | Shimadzu Corp | Radiation detector |
| US7088901B2 (en) * | 2003-08-07 | 2006-08-08 | Kim Chang L | Light guide apparatus and method for a detector array |
| JP2007078567A (en) * | 2005-09-15 | 2007-03-29 | Shimadzu Corp | Radiation detector and its manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1993632A (en) * | 2003-11-20 | 2007-07-04 | 杰克·E·朱尼 | Edge effects treatment for crystals |
| CN1740819A (en) * | 2005-09-26 | 2006-03-01 | 中国科学院高能物理研究所 | The scintillation detector that is used for nuclear imaging device |
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Effective date of registration: 20230208 Address after: 100049 No. 19, Yuquanlu Road, Beijing, Shijingshan District Patentee after: INSTITUTE OF HIGH ENERGY PHYSICS, CHINESE ACADEMY OF SCIENCES Patentee after: Jinan Zhongke Nuclear Technology Research Institute Address before: 100049 Beijing Shijingshan District 19 Yuquanlu Road No. 2 hospital Patentee before: INSTITUTE OF HIGH ENERGY PHYSICS, CHINESE ACADEMY OF SCIENCES |