CN108186041B - Integrated DOI image-reinforced PET annular array structure and processing method - Google Patents
Integrated DOI image-reinforced PET annular array structure and processing method Download PDFInfo
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- 238000003672 processing method Methods 0.000 title claims abstract description 13
- 238000002955 isolation Methods 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000011810 insulating material Substances 0.000 claims abstract description 13
- 239000013078 crystal Substances 0.000 claims abstract description 8
- 238000009792 diffusion process Methods 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims abstract description 6
- 230000003287 optical effect Effects 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 5
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Inorganic materials [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 2
- 239000012774 insulation material Substances 0.000 claims 2
- 125000006850 spacer group Chemical group 0.000 claims 2
- 230000006872 improvement Effects 0.000 abstract description 3
- 230000010354 integration Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
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Abstract
The invention discloses an integrated DOI image reinforced PET annular array structure and a processing method thereof, wherein the integrated DOI image reinforced PET annular array structure comprises the following steps: the light-emitting diode comprises a plurality of cambered surface PET strips and a strip-shaped insulating material, wherein the cambered surface PET strips are arranged in an annular array to form a hollow annular structure, the insulating material is respectively arranged between two adjacent cambered surface PET strips to be isolated and connected, the radians of the inner concave surfaces of the cambered surface PET strips are the same, the insulating material is a mixture of high-fluidity optical glue and a diffusion type reflecting material, and the cambered surface PET strips comprise but are not limited to one of LYSO, LSO, YSO, GAGG and BGO scintillation crystal materials. Through the mode, the integrated DOI image reinforced PET annular array structure and the processing method provided by the invention have the advantages that the isolation of the cambered surface PET strips is particularly carried out by using the isolation material, the improvement of image pixels of the PET-CT equipment is facilitated, the position precision of the cambered surface PET strips is ensured through the reserved interval during processing, and the image definition of the PET-CT equipment is ensured.
Description
Technical Field
The invention relates to the technical field of medical imaging, in particular to an integrated DOI image reinforced PET annular array structure and a processing method thereof.
Background
PET-CT is the integration perfect integration of functions of a high-grade PET scanner and an advanced spiral CT device, and is mainly clinically applied to early detection and diagnosis of major diseases in the fields of tumors, brains, hearts and the like. Since PET-CT enters clinical medicine, the technology development is more mature, and the attention and the application are more and more.
The PET ring is required to be used in the PET-CT equipment, the existing PET ring is generally of an integral structure or a splicing structure, the PET ring of the integral structure is difficult to lift in the aspect of pixels of images, the spliced PET ring cannot guarantee the processing precision, the definition of the images is influenced, and improvement is required.
Disclosure of Invention
The invention mainly solves the technical problem of providing an integrated DOI image reinforced PET annular array structure and a processing method thereof, which adopt a split structure and ensure the precision of the structure.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides an integration DOI image intensification PET annular array structure, includes: the light-emitting diode comprises a plurality of cambered surface PET strips and a strip-shaped insulating material, wherein the cambered surface PET strips are arranged in an annular array to form a hollow annular structure, the insulating material is respectively arranged between two adjacent cambered surface PET strips to be isolated and connected, the radians of the inner concave surfaces of the cambered surface PET strips are the same, the insulating material is a mixture of high-fluidity optical glue and a diffusion type reflecting material, and the cambered surface PET strips comprise but are not limited to one of LYSO, LSO, YSO, GAGG and BGO scintillation crystal materials.
In a preferred embodiment of the invention, the radian of the outer convex surfaces of the cambered PET strips is the same.
In a preferred embodiment of the present invention, the diffuse reflective material includes, but is not limited to, BaSO4And TiO2One kind of (1).
In order to solve the technical problem, the invention adopts another technical scheme that: the processing method of the integrated DOI image reinforced PET annular array structure comprises the following steps:
a straight-barrel type annular structure is made of LYSO, LSO, YSO, GAGG or BGO scintillation crystal materials;
processing a plurality of filling grooves downwards from the top of the annular structure, wherein the plurality of filling grooves are distributed on the annular structure in an annular array manner, and intervals are reserved between the bottoms of the filling grooves and the bottom of the annular structure;
placing the annular structure on a plane workbench, concentrically installing a first isolation sleeve in the annular structure, and concentrically installing a second isolation sleeve outside the annular structure;
filling an insulating material into the filling groove, and drawing out the first isolation sleeve and the second isolation sleeve after curing;
cutting or polishing the bottom of the annular structure to expose the bottom of the filling groove;
and (4) finely turning the inner hole and the outer circle of the annular structure to obtain a smooth PET annular array structure.
In a preferred embodiment of the invention, a gap is left between the outer wall of the first isolation sleeve and the inner wall of the annular structure.
In a preferred embodiment of the invention, a gap is left between the inner wall of the second isolation sleeve and the outer wall of the annular structure.
The invention has the beneficial effects that: the invention provides an integrated DOI image reinforced PET annular array structure and a processing method thereof, which particularly utilize an isolation material to isolate cambered surface PET strips, are beneficial to improving image pixels of PET-CT equipment, ensure the position precision of the cambered surface PET strips through reserving intervals during processing, and ensure the image definition of the PET-CT equipment.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic diagram of an integrated DOI image-enhanced PET annular array structure and a method of processing according to a preferred embodiment of the present invention;
FIG. 2 is a schematic view of a fastening structure of an integrated DOI image-enhanced PET annular array structure of the present invention during processing;
FIG. 3 is a schematic diagram of a semi-finished product of an integrated DOI image-enhanced PET annular array structure according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, an embodiment of the invention includes:
an integrated DOI image reinforced PET annular array structure and a processing method thereof comprise: 10 cambered surface PET strips 1 and banding insulating material 2, several cambered surface PET strips 1 carry out annular array and arrange and enclose into fretwork annular structure, insulating material 2 sets up respectively and isolates and connects between two adjacent cambered surface PET strips 1, can promote the image pixel of PET-CT equipment.
The radian of the inner concave surfaces of the 10 cambered surface PET strips is the same, and the radian of the outer convex surfaces of the 10 cambered surface PET strips is the same, so that the structural uniformity of the cambered surface PET strips is ensured, the size and position precision is high, and the image definition of the PET-CT equipment can be improved.
The isolation material is a mixture of high-fluidity optical glue and a diffusion type reflection material, the high-fluidity optical glue has good fluidity and is convenient to construct, and the diffusion type reflection material is BaSO4And TiO2And (3) the one of the two components and high-fluidity optical glue form reflecting slurry. The cambered surface PET strip can be made of scintillation crystal materials such as LYSO, LSO, YSO, GAGG or BGO.
Example 1:
a processing method of an integrated DOI image reinforced PET annular array structure comprises the following steps:
a straight-tube type annular structure 4 is made of BGO scintillation crystal material;
utilizing a numerical control machining center to machine 10 filling grooves 5 downwards from the top of the annular structure 4, wherein the 10 filling grooves 5 are distributed on the annular structure 4 in an annular array manner, and the bottom of each filling groove 5 and the bottom of the annular structure 4 are separated by a distance of 2mm in thickness, so that the structural stability is ensured;
placing an annular structure 4 on a plane workbench, concentrically installing a first isolation sleeve 6 in the annular structure 4, reserving a 0.1mm gap between the outer wall of the first isolation sleeve 6 and the inner wall of the annular structure 4, concentrically installing a second isolation sleeve 3 outside the annular structure 4, reserving a 0.1mm gap between the inner wall of the second isolation sleeve 3 and the outer wall of the annular structure 4, as shown in fig. 2;
filling the filling groove 5 with the insulating material 2, and after curing, drawing out the first isolation sleeve 6 and the second isolation sleeve 3, as shown in fig. 3;
cutting or grinding the bottom of the annular structure 4 to expose the bottom of the filling groove 5;
and (3) finely turning the inner hole and the outer circle of the annular structure 4, and removing redundant insulating materials generated in the gap to obtain a smooth PET annular array structure.
Example 2:
a processing method of an integrated DOI image reinforced PET annular array structure comprises the following steps:
a straight-tube type annular structure 4 is made of LYSO scintillation crystal material;
utilizing a numerical control machining center to machine 8 filling grooves 5 downwards from the top of the annular structure 4, wherein the 8 filling grooves 5 are distributed on the annular structure 4 in an annular array manner, and a 3mm thickness interval is reserved between the bottom of each filling groove 5 and the bottom of the annular structure 4, so that the structural stability is ensured;
the method comprises the following steps of placing an annular structure 4 on a plane workbench, concentrically installing a first isolation sleeve 6 in the annular structure 4, reserving a 0.2mm gap between the outer wall of the first isolation sleeve 6 and the inner wall of the annular structure 4, concentrically installing a second isolation sleeve 3 outside the annular structure 4, and reserving a 0.2mm gap between the inner wall of the second isolation sleeve 3 and the outer wall of the annular structure 4;
filling the filling groove 5 with the insulating material 2, and after curing, drawing out the first isolation sleeve 6 and the second isolation sleeve 3;
cutting or grinding the bottom of the annular structure 4 to expose the bottom of the filling groove 5;
and (4) finely turning the inner hole and the outer circle of the annular structure 4 to obtain a smooth PET annular array structure.
In conclusion, the integrated DOI image reinforced PET annular array structure and the processing method thereof provided by the invention have the advantages that the processing is convenient, the size precision of the obtained PET annular array structure is high, the structural stability is good, the generation efficiency is high, and the improvement of the image definition and pixels of PET-CT equipment is facilitated.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (3)
1. A processing method of an integrated DOI image reinforced PET annular array structure comprises the following steps: several cambered surface PET strips and strip-shaped insulating materialThe cambered surface PET strips are arranged in an annular array to form a hollowed-out annular structure, the insulation material is arranged between two adjacent cambered surface PET strips to be insulated and connected, the radians of the inner concave surfaces of the cambered surface PET strips are the same, the insulation material is a mixture of high-fluidity optical glue and a diffusion type reflection material, the cambered surface PET strips comprise one of LYSO, LSO, YSO, GAGG and BGO scintillation crystal materials, the radians of the outer convex surfaces of the cambered surface PET strips are the same, and the diffusion type reflection material comprises BaSO4And TiO2One of the above, characterized by comprising the steps of:
a straight-barrel type annular structure is made of LYSO, LSO, YSO, GAGG or BGO scintillation crystal materials;
processing a plurality of filling grooves downwards from the top of the annular structure, wherein the plurality of filling grooves are distributed on the annular structure in an annular array manner, and intervals are reserved between the bottoms of the filling grooves and the bottom of the annular structure;
placing the annular structure on a plane workbench, concentrically installing a first isolation sleeve in the annular structure, and concentrically installing a second isolation sleeve outside the annular structure;
filling an insulating material into the filling groove, and drawing out the first isolation sleeve and the second isolation sleeve after curing;
cutting or polishing the bottom of the annular structure to expose the bottom of the filling groove;
and (4) finely turning the inner hole and the outer circle of the annular structure to obtain a smooth PET annular array structure.
2. The method of claim 1, wherein a gap is left between the outer wall of the first spacer sleeve and the inner wall of the annular structure.
3. The method of claim 1, wherein a gap is left between the inner wall of the second spacer sleeve and the outer wall of the annular structure.
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| FR2874021B1 (en) | 2004-08-09 | 2006-09-29 | Saint Gobain Cristaux Detecteu | DENSE AND RAPID SCINTILLATOR MATERIAL WITH LOW DELAYED LUMINESCENCE |
| WO2012066425A2 (en) | 2010-11-16 | 2012-05-24 | Saint-Gobain Cristaux Et Detecteurs | Scintillation compound including a rare earth element and a process of forming the same |
| WO2016135040A1 (en) | 2015-02-26 | 2016-09-01 | Saint-Gobain Cristaux & Détecteurs | Scintillation crystal including a co-doped rare earth silicate, a radiation detection apparatus including the scintillation crystal, and a process of forming the same |
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| JP2000056021A (en) * | 1998-06-02 | 2000-02-25 | Toshiba Corp | Radiation detector and nuclear medical diagnostic device |
| US6285028B1 (en) * | 1998-06-02 | 2001-09-04 | Kabushiki Kaisha Toshiba | Semiconductor radiation detector and nuclear medicine diagnostic apparatus |
| CN102066976A (en) * | 2008-06-16 | 2011-05-18 | 皇家飞利浦电子股份有限公司 | Radiation detector and a method of manufacturing a radiation detector |
| CN104825181A (en) * | 2015-05-07 | 2015-08-12 | 武汉数字派特科技有限公司 | Scanning mechanism of PET (Positron Emission Tomography) equipment and PET equipment |
| CN105700006A (en) * | 2014-12-10 | 2016-06-22 | 西门子股份公司 | Sensor board for a detector module |
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| EP3117204B1 (en) * | 2014-03-13 | 2021-06-16 | General Electric Company | Curved digital x-ray detector for weld inspection |
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| JP2000056021A (en) * | 1998-06-02 | 2000-02-25 | Toshiba Corp | Radiation detector and nuclear medical diagnostic device |
| US6285028B1 (en) * | 1998-06-02 | 2001-09-04 | Kabushiki Kaisha Toshiba | Semiconductor radiation detector and nuclear medicine diagnostic apparatus |
| CN102066976A (en) * | 2008-06-16 | 2011-05-18 | 皇家飞利浦电子股份有限公司 | Radiation detector and a method of manufacturing a radiation detector |
| CN105700006A (en) * | 2014-12-10 | 2016-06-22 | 西门子股份公司 | Sensor board for a detector module |
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