CN101561506B - Crystal module for gamma ray detector, manufacturing method thereof and gamma ray detector - Google Patents
Crystal module for gamma ray detector, manufacturing method thereof and gamma ray detector Download PDFInfo
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- CN101561506B CN101561506B CN2009100853709A CN200910085370A CN101561506B CN 101561506 B CN101561506 B CN 101561506B CN 2009100853709 A CN2009100853709 A CN 2009100853709A CN 200910085370 A CN200910085370 A CN 200910085370A CN 101561506 B CN101561506 B CN 101561506B
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Abstract
The invention provides a crystal module for a gamma ray detector, which comprises a crystal submodule superposed by a plurality of layers and formed by arraying a plurality of crystal bars along the width direction of the crystal bars, wherein the plurality of the crystal bars comprise a central crystal bar and side crystal bars on two sides of the central crystal bar; the length of inner-side crystal bars of adjacent side crystal bars is greater than that of outer-side crystal bars; the section of the central crystal bar along the direction vertical to the superposed direction is an isosceles trapezoid; the length of the side of isosceles trapezoid positioned on the top surface of the central crystal bar is greater than that of the side of the isosceles trapezoid positioned on the bottomsurface of the central crystal bar; and the side crystal bars are rectangular, and corresponding sides of the top surfaces of the side crystal bars and the top surface of the central crystal bar are positioned on the same inclined plane. The module can reduce the abrasive magnitude of the crystal bars, save the cost, reduce the abrasive time and improve the finished product rate. The invention further provides a method for manufacturing the crystal module for the gamma ray detector and the gamma ray detector with the crystal module.
Description
Technical field
The present invention relates to the X-ray detection X field, especially relate to the design and the manufacturing approach thereof of the crystal module that is used for ray detector and have the ray detector of said crystal module.
Background technology
Radial imaging is to utilize beam to pass through measurand (organ of for example difform workpiece, human body etc.) to be projected in detector array and to list; Processing through electron device and reading and computer data acquiring and analytic system makes the technology of image repetition on computer screen etc. of the inner structure of measurand.
Radial imaging; Both can carry out the external exposure of ray to measurand; The a large amount of radiation absorption data that obtain around its scanning are rebuild the device of its faultage image; Also can let biosome accept certain radiopharmaceutical earlier, these medicines accumulate in certain position or participate in certain metabolic process in the body, and CONCENTRATION DISTRIBUTION and the metabolism to the radioactive nuclide in the biosome is carried out to picture again.
No matter utilize which kind of principle of work, ray detector all is one of ingredients essential in the radiation imaging system.At present; Crystal counter designs such as known polygon that carries out gamma-ray detection or annular; Engage for improving detection efficiency or making it to carry out the space with modules such as other machinery, electronics; The crystal module of ray detector need cut the formation inclined-plane, and each the crystal submodule that promptly constitutes crystal module all will be cut into the pentagonal section of rule.
Be illustrated in figure 1 as prior art and show the synoptic diagram of middle crystal submodule.From Fig. 1, can see; For reaching between crystal module or crystal module and seamless or slit coupling mechanical, electronic module; Traditional inclined design need cut into the cross section of crystal module 1 pentagon as shown in Figure 1, uses optical coupled agent 3 blinds to be coupled with optical amplification device 2.In such technical scheme, need meet the cutting and the grinding of special angle to each crystal bar 4 of crystal module, so that the end face and the optical amplification device of each the crystal bar 4 after grinding mate, thereby satisfy the requirement of X-ray detection X.
But, visible from the forming process of aforesaid crystal module, the main defective that is described below that exists:
First; The crystal bar has inevitable cutting damage ratio, miscut rate and angle material ratio; The a certain proportion of crystal bar that causes is scrapped, especially as the detector crystal bar of probe designs prime cost, like BGO commonly used, LSO, LYSO etc.; All more crisp, sustain damage easily in the cutting process.This has just improved the design cost of crystal counter.
The second, the process of instrument bevel relates to major part (segmentation scheme is whole) crystal, and cutting process is complicated and consuming time, and the angular accuracy of machining is had relatively high expectations, and has improved and has sought the mach threshold and the cost that can cooperate, and has prolonged the design cycle.
In sum, the cutting technique of crystal bar requires height in the prior art, and cutting quantity is big, and design cost is high, and manufacturing time is long.
Summary of the invention
Therefore, the present invention need provide a kind of crystal module that is used for ray detector, reduces perhaps as far as possible and avoids the cutting of crystal module, practices thrift cost and timesaving purpose thereby reach.
Another object of the present invention is to provide a kind of manufacturing approach of said crystal module.
A purpose more of the present invention is to provide a kind of ray detector, and said ray detector has above-mentioned crystal module.
In order to solve at least one technical matters in above-mentioned; A kind of crystal module that is used for ray detector is provided; Said crystal module comprises the crystal submodule that multilayer is stacked; Said crystal submodule is arranged along the Width of crystal bar by a plurality of crystal bars and is formed, and comprises the central crystal bar in wherein a plurality of crystal bars and at the side crystal bar of said central crystal bar both sides, and is positioned at the side crystal bar symmetry of the both sides of said central crystal bar; The length of said central crystal bar is greater than the length of said side crystal bar, and the length of the inboard crystal bar of said adjacent side crystal bar is greater than the length of the crystal bar that is positioned at the outside; Said central crystal bar is an isosceles trapezoid along the cross section perpendicular to the stacked direction of said crystal submodule, is positioned at the length of length end face, said isosceles trapezoid limit of said central crystal bar greater than the isosceles trapezoid bottom surface that is positioned at said central crystal bar, said limit; Said side crystal bar has rectangular shape, and the respective side edge of said side crystal bar end face and said central crystal bar end face is positioned on the same inclined-plane.
Thus; This its contoured surface of crystal module assembling back is not parallel; No matter the ray detector design is polygon, annular, still need the uneven probe designs of crystal module outside surface arbitrarily, the required cutting quantity of the crystal module that under same geometric condition, has all significantly reduced; And guaranteed between crystal module and optical amplification device searching surface it is plane coupling, maximum minimizing the coupling space.
According to an aspect of the present invention, said each side crystal bar bottom surface, in two limits of the stacked direction of said crystal submodule, be positioned on the same plane away from the one side and the said central crystal bar bottom surface of said central crystal bar.
According to an aspect of the present invention, said crystal bar is BGO crystal, LSO crystal or LYSO crystal.
According to a further aspect in the invention, each side crystal bar of said formation crystal submodule has identical width, and forms said crystal submodule by the odd number crystal bar greater than 1.
According to a further aspect in the invention, said crystal module has 7,9,11 layer crystal body submodules, and said crystal submodule is made up of 7,9,11 crystal bars respectively.
The present invention further provides a kind of manufacturing to be used for the method for the crystal module of ray detector; Comprise the steps: A, rectangular parallelepiped crystal bar is ground to form such central crystal bar; The cross section of said central crystal bar wherein is positioned at the length of length end face, said isosceles trapezoid limit of said central crystal bar greater than the isosceles trapezoid bottom surface that is positioned at said central crystal bar, said limit along perpendicular to being isosceles trapezoid by stacked direction; B, the side crystal bar of a plurality of cuboids is connected to successively the both sides of central crystal bar; And arrange along the Width of crystal bar; To form the crystal submodule; The side crystal bar of both sides that wherein is positioned at said central crystal bar is by symmetric offset spread; The length of said central crystal bar forms the length greater than said side crystal bar, and the length of the inboard crystal bar of said adjacent side crystal bar forms the length greater than the crystal bar that is positioned at the outside, and the respective side edge of wherein said side crystal bar end face and said central crystal bar end face is positioned on the same inclined-plane; C, form a plurality of crystal submodules according to steps A, B; And D, said crystal submodule is carried out along said stacked direction stacked, to form said crystal module.
According to an aspect of the present invention, above-mentioned step of manufacturing B further comprises: with the length of said each side crystal bar be chosen to make said each side crystal bar bottom surface, in two limits of the stacked direction of said crystal submodule, be positioned on the same plane away from the one side and the said central crystal bar bottom surface of said central crystal bar.
According to an aspect of the present invention, the crystal bar that uses of the said manufacturing method that is used for the crystal module of ray detector is BGO crystal, LSO crystal or LYSO crystal.
According to a further aspect in the invention, each side crystal bar of said formation crystal submodule has identical width, and forms said crystal submodule by the odd number crystal bar greater than 1.
The present invention also further provides a kind of ray detector, comprising: a plurality of above-mentioned crystal modules, the bottom surface of said crystal module are adjacent to each other and are arranged to annular or polygon; And a plurality of optical amplification devices; Annular or the arrangement adjacent one another are of polygonal outer rim that said optical amplification device is formed around said crystal module, wherein the inclined-plane at the end face of the side crystal bar of each crystal module place is provided with the light collection surface opposing parallel of optical amplification device respectively; Be filled with the optical coupled agent between wherein said crystal module and the said optical amplification device.
According to an embodiment of the invention, said crystal module and said optical amplification device can further be placed as and have identical between the two or the difference smaller width dimension when carrying out spatial arrangement, and are staggeredly placed with the dislocation of half said width.
The optical coupled agent of using among the present invention has the optical index identical or close with the crystal bar, is gel, and light loss is little, and for example perhaps other can reach the chemical substance of same technique effect to light fat.Through filling the optical coupled agent, can make the interface of light signal between crystal module and optical amplification device light collection surface can not produce air gap, prevent the total reflection of air to light, assurance light is well propagated.
According to an aspect of the present invention; The inclined-plane at the end face place of the side crystal bar of two adjacent said crystal modules is positioned on the same plane, is oppositely arranged to the said plane parallel of the light collection surface of each said optical amplification device and two adjacent crystal module formations.The depth of parallelism on the inclined-plane at the end face place of the side crystal bar of the light collection surface of optical amplification device and crystal module is good more, and then the loading of optocoupler mixture is few more, makes manufacturing and later maintenance all than being easier to.
Aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously with easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 has shown the structural representation of existing crystal module and optical amplification device;
Fig. 2 a has shown the crystal module of ray detector and the structural representation of optical amplification device, and Fig. 2 b has shown the enlarged diagram of the part A among Fig. 2 a;
Fig. 3 has shown the layout synoptic diagram of crystal module according to an embodiment of the invention and optical amplification device;
Fig. 4 has shown the perspective view of crystal module according to an embodiment of the invention.The symbol implication is following among the figure:
1 crystal module
2 optical amplification devices
3 optical coupled agent
4 crystal bars
41 central crystal bars
42 side crystal bars
Embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
The description of this illustrated embodiment should combine with corresponding legend, and diagram should be as the part of complete instructions.The description of embodiment here, any reference in concerned direction and orientation all only is for the ease of description, and can not be interpreted as any restriction to protection domain of the present invention.Relational language, as " top ", " bottom ", " inboard ", " outside ", " end face ", " bottom surface ", " on ", D score etc. all should be interpreted as describe in the explanation or figure in the discussion object that shows refer to the orientation.These relational languages are described just to convenient, and should not think the explanation of instrument and equipment or the concrete operations on particular orientation.Part term implication is following: " outside " refers on the crystal submodule apart from central crystal bar direction far away; " inboard " refers to the nearer direction of distance center crystal bar on the crystal submodule; " end face " refers to its face adjacent with optical amplification device light collection surface on the crystal module; " bottom surface " refers to face relative with " end face " on the crystal module.
Carry out financial cost that the crystal module cutting brought and the waste on the time consumption by the form fit demand in order to overcome; Also, the invention provides a kind of crystal module of ray detector, the assemble method of this module and ray detector that comprises this module of being used for for fear of the coupling of the on-plane surface between crystal module and optical amplification device detection plane.
To combine below accompanying drawing describe according to crystal module of the present invention with have a detailed structure of the ray detector of said crystal module; And will carry out exemplary illustration as the example of said crystal module with the BGO crystal below; But this is just for purpose of explanation rather than in order to limit protection scope of the present invention; For example, those of ordinary skill can apply it in the crystal module such as LSO and LYSO crystal after the detailed description of having read following technical proposals at an easy rate.
Shown in Fig. 2 a, a kind of annular ray detector is provided, comprising: a plurality of crystal modules 1, the bottom surface of crystal module are adjacent to each other and are arranged to annular; A plurality of optical amplification devices 2, the outer circular edge arrangement adjacent one another are that optical amplification device 2 is formed around crystal module 1, wherein the inclined-plane at the end face of the side crystal bar of each crystal module 1 place is provided with the light collection surface opposing parallel of optical amplification device 2 respectively; Wherein be filled with optical coupled agent 3 between crystal module 1 and the optical amplification device 2, shown in Fig. 2 b.Through filling the optical coupled agent, can make the energy loss of the interface of ray signal between crystal module and optical amplification device light collection surface reach minimum.According to one embodiment of present invention, these a plurality of crystal modules 1 can also be adjacent to each other and be arranged to arbitrary polygon, for example octagon, decagon etc.
As shown in Figure 2; The spatial arrangement of crystal module 1 and optical amplification device 2; Can be following situation: the inclined-plane at the end face place of the side crystal bar of two adjacent crystal modules 1 is positioned on the same plane, is oppositely arranged to the plane parallel of the light collection surface of each optical amplification device 2 and two adjacent crystal module 1 formations.The depth of parallelism on the inclined-plane at the end face place of the side crystal bar of the light collection surface of optical amplification device 2 and crystal module 1 is good more, and then the loading of optocoupler mixture is few more, makes manufacturing and later maintenance all than being easier to.
The optical coupled agent of using among the present invention has the optical index identical or close with the crystal bar, is gel, and light loss is little, and for example perhaps other can reach the chemical substance of same technique effect to light fat.Through filling the optical coupled agent, can make the interface of light signal between crystal module and optical amplification device light collection surface can not produce air gap, prevent the total reflection of air to light, guarantee the light good spreading property.
To describe crystal module according to an embodiment of the invention in detail with reference to Fig. 3 below.This crystal module comprises the crystal submodule that multilayer is stacked.The crystal submodule is arranged along the Width of crystal bar by a plurality of crystal bars 4 and is formed, and comprises central crystal bar 41 in wherein a plurality of crystal bars and at the side crystal bar 42 of central crystal bar both sides, and is positioned at side crystal bar 42 symmetric offset spread of the both sides of central crystal bar.The length of central crystal bar 41 is greater than the length of side crystal bar 42, and the length of the inboard crystal bar of adjacent side crystal bar 42 is greater than the length of the crystal bar that is positioned at the outside.Central crystal bar 41 is an isosceles trapezoid along the cross section perpendicular to the stacked direction of crystal submodule; Be positioned at length central crystal bar 41 end faces, the isosceles trapezoid limit greater than being positioned at length central crystal bar 41 bottom surfaces, the isosceles trapezoid limit; That is, as shown in Figure 3, these isosceles are trapezoidal to be inverted.Side crystal bar 42 has rectangular shape, and the respective side edge of side crystal bar end face and central crystal bar 41 end faces is positioned on the same inclined-plane.
Crystal module provided by the present invention, each the side crystal bar that constitutes it can be for having identical width, and form the crystal submodule by the odd number crystal bar greater than 1.Those of ordinary skill obviously is appreciated that; Side crystal bar with different in width also can be used to form said crystal module; As long as the respective side edge of said side crystal bar end face and central crystal bar 41 end faces is positioned on the same inclined-plane, above-mentioned thus is for exemplary purposes rather than in order to limit protection scope of the present invention.
According to the crystal counter that is designed final polygon or annular shape demand; Can carry out the exact length that geometrical calculation obtains each crystal bar 4; The length of these crystal bars should be inequality, to satisfy the shape demand of the final detector crystal module that forms.In addition; The design angle of crystal module 1 two sides; Also can calculate, thereby draw the cutting angle of central crystal bar 41 sides, that is to say and confirm that central crystal bar 41 is along the concrete shape perpendicular to the formed isosceles trapezoid in cross section of the stacked direction of crystal submodule according to mathematical formulae.
To above-mentioned crystal module be described in further detail with reference to Fig. 2 a, Fig. 3 and Fig. 4 below.When be designed to: 36 crystal modules 1 of ray detector are arranged to annular (shown in Fig. 2 a), are 160mm from the center of circle to the radius of crystal module end face.Crystal module is made up of 7 straton modules, and each submodule is rearranged by the Width of 7 crystal bars along the crystal bar again.The original-shape of each crystal bar is a cuboid, and the bottom surface is the square of 2.00 * 2.00mm, and the height of central crystal bar is designed to 10.00mm.
According to as above designing requirement, carry out the length computation of calculating and each side crystal bar of the cutting angle of central crystal bar.Wherein, Central crystal bar 41 is an isosceles trapezoid along the cross section perpendicular to the stacked direction of crystal submodule; Its trapezoidal height is 10.00mm according to designing requirement, and the angle that can calculate the isosceles trapezoid drift angle is 85 °, and the angle at base angle is 95 °; And the top length of side of this trapezoid cross section then can calculate the bottom length of side and should be 0.25mm according to being designed to 2.00mm.The side crystal bar 42 of both sides, the symmetria bilateralis that is positioned at central crystal bar 41 is arranged, in each side of central crystal bar; Adjacent side crystal bar 42 end faces will be positioned on the same inclined-plane; This inclined-plane and central crystal bar 41 are connected to the end face side of central crystal bar 41 mutually, and in two limits of each side crystal bar stacked direction 42 bottom surfaces, that be parallel to said crystal submodule, be positioned on the same plane away from bottom surface, one side of central crystal bar 41, for reaching above-mentioned requirements with central crystal bar 41; The length of the inboard crystal bar of these side crystal bars 42 should be greater than the length of the crystal bar that is positioned at the outside; Its length is respectively 9.87mm, 9.69mm, 9.52mm from high to low.
Shown in Figure 4 is the schematic perspective view of crystal module provided by the invention, can see among the figure, and the end face of each side crystal bar of crystal module finally forms the inclined-plane, with space coupling satisfied and optical amplification device (not shown among Fig. 4); And the bottom surface of crystal module, for stepped.
The above-mentioned crystal module that designs, its contoured surface is not parallel, is polygon, annular and needs the uneven probe designs of crystal module outside surface arbitrarily applicable to the ray detector design.And only need grind in the process the two sides of central crystal bar; Will cut all crystals bar with traditional inclined-plane cutting compares; The required cutting quantity of the crystal module that under same geometric condition, has significantly reduced, and guaranteed between crystal module and optical amplification device searching surface it is the plane coupling, reduced the coupling space the biglyyest; Reduce the trouble of crystal assembling, maintenance, improved assembling easness and the stability of crystal module.
To describe the manufacturing approach according to crystal module of the present invention below, wherein said manufacturing approach comprises the steps:
A, the bottom surface is the square of 2.00 * 2.00mm, highly grinds to form following central crystal bar 41 for the rectangular parallelepiped crystal bar of 10.00mm: its cross section is along perpendicular to being trapezoidal by stacked direction; Length end face, the isosceles trapezoid limit that wherein is positioned at central crystal bar 41 is greater than the length bottom surface that is positioned at central crystal bar 41, the isosceles trapezoid limit, and both length are respectively 2.00mm and 0.25mm;
B, the side crystal bar 42 that will have a cuboid of above-mentioned size are processed as 9.87mm, 9.69mm, 9.52mm from high to low respectively.The both sides that connect side crystal bar to the central crystal bar 41 after processing successively; And arrange along the Width of crystal bar 4; To form the crystal submodule; The side crystal bar 42 of both sides that wherein is positioned at central crystal bar 41 is by symmetric offset spread; The length of central crystal bar 41 forms the length greater than each side crystal bar 42, and the length of the inboard crystal bar of adjacent side crystal bar 42 forms greater than the length of crystal bar that is positioned at the outside, and wherein the respective side edge of side crystal bar 42 end faces and central crystal bar 41 end faces is positioned on the same inclined-plane;
C, form 7 crystal submodules according to steps A, B; And
D, the crystal submodule is carried out along stacked direction stacked, to form crystal module 1.
Above-mentioned crystal module can also process according to other the concrete designing requirements of ray detector and the specification of crystal bar, to require to form said crystal module according to practical design.
The foregoing description only is schematic; For those of ordinary skill in the art; Be appreciated that under the situation that does not break away from principle of the present invention and spirit and can carry out multiple variation, modification, replacement and modification, the submodule number that contains of detector shape, detector module for example, the crystal bar number that submodule contains these embodiment; The concrete sizes of crystal bar etc., scope of the present invention is limited accompanying claims and equivalent thereof.Profile and formation requirement that all satisfy the crystal module of actual polygon or annular ray detector designing requirement all can calculate through said method, all should be regarded as the replacement that is equal to content of the present invention, still belong to protection scope of the present invention.
Claims (10)
1. crystal module that is used for ray detector; Said crystal module comprises the crystal submodule that multilayer is stacked; Said crystal submodule is arranged along the Width of crystal bar by a plurality of crystal bars (4) and is formed; Comprise central crystal bar (41) in wherein a plurality of crystal bars and at the side crystal bar (42) of said central crystal bar both sides; And be positioned at side crystal bar (42) symmetry of the both sides of said central crystal bar, the length of said central crystal bar (41) is greater than the length of said side crystal bar (42), and the length of the inboard side crystal bar of adjacent said side crystal bar (42) is greater than the length of the side crystal bar that is positioned at the outside; Said central crystal bar (41) is an isosceles trapezoid along the cross section perpendicular to the stacked direction of said crystal submodule, and length end face, said isosceles trapezoid limit that is positioned at said central crystal bar (41) is greater than the length bottom surface that is positioned at said central crystal bar (41), said isosceles trapezoid limit; Said side crystal bar (42) has rectangular shape, and the respective side edge of said side crystal bar end face and said central crystal bar (41) end face is positioned on the same inclined-plane.
2. crystal module according to claim 1, wherein, each side crystal bar bottom surface, in two limits of the stacked direction of said crystal submodule, be positioned on the same plane away from the one side and the said central crystal bar bottom surface of said central crystal bar.
3. crystal module according to claim 1, wherein, said crystal bar is BGO crystal bar, LSO crystal bar or LYSO crystal bar.
4. crystal module according to claim 1, wherein, each side crystal bar of said crystal submodule has identical width, and forms said crystal submodule by the odd number crystal bar greater than 1.
5. a manufacturing is used for the method for the crystal module of ray detector, comprises the steps:
A, rectangular parallelepiped crystal bar is ground to form such central crystal bar; The cross section of said central crystal bar will be along perpendicular to being isosceles trapezoid by stacked direction, and length end face, said isosceles trapezoid limit that wherein is positioned at said central crystal bar (41) is greater than the length bottom surface that is positioned at said central crystal bar (41), said isosceles trapezoid limit;
B, the side crystal bar of a plurality of cuboids is connected to successively the both sides of central crystal bar; And arrange along the Width of crystal bar; To form the crystal submodule; The side crystal bar of both sides that wherein is positioned at said central crystal bar is by symmetric offset spread; The length of said central crystal bar forms the length greater than said side crystal bar, and the length of the inboard side crystal bar of adjacent said side crystal bar forms greater than the length of side crystal bar that is positioned at the outside, and the respective side edge of wherein said side crystal bar end face and said central crystal bar end face is positioned on the same inclined-plane;
C, form a plurality of crystal submodules according to steps A, B; And
D, with said crystal submodule along said will be undertaken by stacked direction stacked, to form said crystal module.
6. method according to claim 5, wherein, said step B further comprises:
With the length of said side crystal bar be chosen to make each said side crystal bar bottom surface, in two limits of the stacked direction of said crystal submodule, be positioned on the same plane away from the one side and the said central crystal bar bottom surface of said central crystal bar.
7. manufacturing according to claim 5 is used for the method for the crystal module of ray detector, and wherein, said crystal bar is BGO crystal, LSO crystal or LYSO crystal.
8. manufacturing according to claim 5 is used for the method for the crystal module of ray detector, and wherein, the said side crystal bar that constitutes the crystal submodule has identical width, and forms said crystal submodule by the odd number crystal bar greater than 1.
9. ray detector comprises:
A plurality of crystal modules as claimed in claim 1 (1), the bottom surface of said crystal module are adjacent to each other and are arranged to annular or polygon; And
A plurality of optical amplification devices (2); Annular or the arrangement adjacent one another are of polygonal outer rim that said optical amplification device is formed around said crystal module (1), wherein the inclined-plane at the end face of the side crystal bar of each crystal module (1) place is provided with the light collection surface opposing parallel of optical amplification device (2) respectively;
Be filled with optical coupled agent (3) between wherein said crystal module (1) and the said optical amplification device (2).
10. according to ray detector as claimed in claim 9; Adjacent and the inclined-plane that belong to adjacent two said crystal modules respectively of in the inclined-plane at the end face of the side crystal bar of wherein adjacent two said crystal modules (1) place two is positioned on the same plane, is oppositely arranged to the said plane parallel that the light collection surface of each said optical amplification device (2) and two adjacent crystal modules (1) constitute.
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| CN101839992B (en) * | 2010-05-06 | 2013-11-06 | 清华大学 | Photosensitive device inclined arrangement type high energy ray detector |
| CN103158203B (en) * | 2011-12-16 | 2015-09-02 | 上海联影医疗科技有限公司 | The preparation method of crystal area array and crystal counter |
| US9696439B2 (en) | 2015-08-10 | 2017-07-04 | Shanghai United Imaging Healthcare Co., Ltd. | Apparatus and method for PET detector |
| CN110664424B (en) * | 2019-09-30 | 2023-05-02 | 东软医疗系统股份有限公司 | Detector module and CT detector with same |
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| CN1223848A (en) * | 1997-11-25 | 1999-07-28 | 通用电气公司 | Method of fabricating scintillators for computed tomograph system |
| US6011266A (en) * | 1998-04-15 | 2000-01-04 | Lockheed Martin Energy Research Corporation | Apparatus and method for the simultaneous detection of neutrons and ionizing electromagnetic radiation |
| CN1673773A (en) * | 2004-03-26 | 2005-09-28 | 株式会社岛津制作所 | Radiation detector and a method of manufacturing the detector |
| CN101057788A (en) * | 2006-09-29 | 2007-10-24 | 清华大学 | Data acquisition system for nuclein and fluorescent dual module integral small animal molecules imaging |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223848A (en) * | 1997-11-25 | 1999-07-28 | 通用电气公司 | Method of fabricating scintillators for computed tomograph system |
| US6011266A (en) * | 1998-04-15 | 2000-01-04 | Lockheed Martin Energy Research Corporation | Apparatus and method for the simultaneous detection of neutrons and ionizing electromagnetic radiation |
| CN1673773A (en) * | 2004-03-26 | 2005-09-28 | 株式会社岛津制作所 | Radiation detector and a method of manufacturing the detector |
| CN101057788A (en) * | 2006-09-29 | 2007-10-24 | 清华大学 | Data acquisition system for nuclein and fluorescent dual module integral small animal molecules imaging |
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