CN204086557U - A kind of photomultiplier debugging apparatus - Google Patents
A kind of photomultiplier debugging apparatus Download PDFInfo
- Publication number
- CN204086557U CN204086557U CN201420524473.7U CN201420524473U CN204086557U CN 204086557 U CN204086557 U CN 204086557U CN 201420524473 U CN201420524473 U CN 201420524473U CN 204086557 U CN204086557 U CN 204086557U
- Authority
- CN
- China
- Prior art keywords
- photomultiplier
- crystal
- detector
- radioactive source
- transit tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000013078 crystal Substances 0.000 claims abstract description 68
- 239000002775 capsule Substances 0.000 claims abstract description 8
- 230000005855 radiation Effects 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 230000002285 radioactive effect Effects 0.000 claims description 48
- 239000000463 material Substances 0.000 claims description 12
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 229920002545 silicone oil Polymers 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 238000002600 positron emission tomography Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009509 drug development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002858 neurotransmitter agent Substances 0.000 description 1
- 239000002547 new drug Substances 0.000 description 1
- 238000009206 nuclear medicine Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Landscapes
- Measurement Of Radiation (AREA)
- Nuclear Medicine (AREA)
Abstract
The utility model provides a kind of photomultiplier debugging apparatus, comprising: detector and the radiation source capsule be positioned at below detector; Detector comprises: detector box body, the crystal module being positioned at detector box body, photomultiplier transit tube module and point pressing plate; Crystal module is positioned at below photomultiplier transit tube module, and a point pressing plate is positioned at above photomultiplier transit tube module; Pressing plate is divided to be arranged on detector box body top; Crystal module comprises: crystal assembly and crystal bulk; Photomultiplier transit tube module comprises: photomultiplier assembly and multiple photomultiplier transit tube body; The feed circuit of photomultiplier transit tube body are electric resistance partial pressure type circuit; The regulator of feed circuit is positioned on point pressing plate; Pressing plate upper surface is divided to be provided with data-out port and high-voltage power supply interface; Feed circuit are connected with extraneous power supply by high-voltage power supply interface; The data output end of photomultiplier transit tube body is connected with detector test platform by data-out port.
Description
Technical field
The utility model relates to detector technology field, is specifically related to a kind of photomultiplier debugging apparatus.
Background technology
Positron emission tomography device (PET, Positron Emission Tomography) be after x-ray tomography imaging and mr imaging technique, computerized tomography technology is applied to the clinical examination image technology that the field of nuclear medicine is more advanced, be the only New video technology that can show biomolecule metabolism, acceptor and neurotransmitter activity on live body at present, be now widely used in the aspects such as the Diagnosis and differential diaggnosis of various diseases, state of an illness judgement, therapeutic evaluation, organ function research and new drug development.
PET scanner is made up of detector, front-end electronics, examination couch, computing machine and other slave parts, and detector is the kernel component of PET, is PET " eyes ".Position resolution, the technical indicator such as temporal resolution and sensitivity of a PET scanner depend primarily on the detector that it uses, and namely PET scanner finally provides the quality of image and practical assessment first to depend on detector.
Detector is primarily of crystal array and electrooptical device composition, and crystal array is mainly used in absorbing γ photon, produces fluorescence, and electrooptical device Main Function absorbs fluorescence, and through opto-electronic conversion, and amplification produces pulsed current signal.
Mainly contain two kinds of detectors at present, one is common photomultiplier tube detectors, and one is silicon photomultiplier detector.
A common photomultiplier tube detectors generally adds 4 common photomultipliers by crystal array and forms, utilize ANGER light-dividing principle, the light that the crystal bar of diverse location arrives 4 photomultipliers is different, the position of crystal bar is determined by the ratio of the light of 4 photomultipliers, in order to make the position of crystal bar accurate, detector performance is good, need the enlargement factor of every root photomultiplier the same, consistance is good, but because the error of photomultiplier transit pipe processing technique, very easily cause every root photomultiplier enlargement factor inconsistent, difficulty is brought to the determination of crystal bar position.
Utility model content
In order to the problem that the error overcoming photomultiplier transit pipe processing technique easily causes every root photomultiplier enlargement factor inconsistent, the utility model provides a kind of photomultiplier debugging apparatus.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
The utility model provides a kind of photomultiplier debugging apparatus, comprising: detector and the radiation source capsule be positioned at below detector;
Detector comprises: detector box body, the crystal module being positioned at detector box body, photomultiplier transit tube module and point pressing plate; Wherein, crystal module is positioned at below photomultiplier transit tube module, and a point pressing plate is positioned at above photomultiplier transit tube module; Pressing plate is divided to be arranged on detector box body top;
Crystal module comprises: crystal assembly and crystal bulk; Crystal bulk is installed on crystal assembly; Photomultiplier transit tube module comprises: photomultiplier assembly and multiple photomultiplier transit tube body; Multiple photomultiplier transit tube body is arranged on photomultiplier assembly; The feed circuit of photomultiplier transit tube body are electric resistance partial pressure type circuit; The regulator of feed circuit is positioned on point pressing plate; Pressing plate upper surface is divided to be provided with data-out port and high-voltage power supply interface; Feed circuit are connected with extraneous power supply by high-voltage power supply interface; The data output end of photomultiplier transit tube body is connected with detector test platform by data-out port; Crystal module is fixed by multiple spring clip and photomultiplier assembly;
Radiation source capsule comprises: radioactive source box body, radioactive source and radioactive source box base; Radioactive source is arranged on radioactive source box base; Radioactive source box body is provided with upper cover, is above covered with mounting hole; Detector lower end is placed in mounting hole, and is positioned by location-plate, and radioactive source and crystal module are oppositely arranged.
Further, photomultiplier transit tube module is provided with 4 photomultiplier transit tube bodies.
Further, box joint is provided with between detector box body and point pressing plate.
Further, between spring clip and photomultiplier assembly, be provided with pipe holder, be bolted between spring clip and pipe holder.
Further, the material of spring clip is spring steel material.
Further, crystal assembly comprises crystal base plate and crystal holder, and crystal holder lower end is connected with crystal base plate.
Further, radioactive source is cylindrical radioactive source; Radioactive source box base is provided with circular hole, and radioactive source is installed in circular hole.
Further, radioactive source is nuclide emission source.
Further, silicone oil is provided with between bottom crystal assembly top and photomultiplier assembly.
Further, the material of radioactive source box body and radioactive source box base is shielding material.
The beneficial effects of the utility model are:
The utility model by arranging regulator on point pressing plate, regulate the voltage of the feed circuit of photomultiplier, make the enlargement factor of 4 photomultipliers consistent, photomultiplier after debugging assembles with crystal array the detector obtained again, crystal bar position is accurate, detector resolution improves, and the picture quality of PET scanner obviously gets a promotion.
Accompanying drawing explanation
Fig. 1 is the partial sectional view of the photomultiplier debugging apparatus described in the utility model embodiment;
Fig. 2 is the longitudinal sectional view of the detector described in the utility model embodiment;
Fig. 3 is the structural representation of point pressing plate described in the utility model embodiment.
Description of reference numerals:
1, detector; 2, source capsule is radiated; 3, detector box body; 4, crystal module; 5, photomultiplier transit tube module; 6, pressing plate is divided; 7, crystal assembly; 8, crystal bulk; 9, photomultiplier assembly; 10, photomultiplier transit tube body; 11, regulator; 12, data-out port; 13, high-voltage power supply interface; 14, spring clip; 15, radioactive source box body; 16, radioactive source; 17, radioactive source box base; 18, upper cover; 19, mounting hole; 20, box joint; 21, pipe holder; 22, crystal base plate; 23, crystal holder; 24, location-plate.
Embodiment
For making the technical problems to be solved in the utility model, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
See Fig. 1 and Fig. 2, the utility model provides a kind of photomultiplier debugging apparatus, comprising: detector 1 and the radiation source capsule 2 be positioned at below detector 1;
Detector 1 comprises: detector box body 3, the crystal module 4 being positioned at detector box body 3, photomultiplier transit tube module 5 and point pressing plate 6; Wherein, crystal module 4 is positioned at below photomultiplier transit tube module 5, and a point pressing plate 6 is positioned at above photomultiplier transit tube module 5, further, is provided with box joint 20 between detector box body 3 and point pressing plate 6; Pressing plate 6 is divided to be arranged on detector box body 3 top.
Crystal module 4 comprises: crystal assembly 7 and crystal bulk 8; Crystal bulk 8 is installed on crystal assembly 7; Crystal assembly 7 comprises crystal base plate 22 and crystal holder 23; Crystal holder 23 lower end is connected with crystal base plate 22.
Photomultiplier transit tube module 5 comprises: photomultiplier assembly 9 and multiple photomultiplier transit tube body 10; Further, photomultiplier transit tube module 5 is provided with 4 photomultiplier transit tube bodies 10; Multiple photomultiplier transit tube body 10 is arranged on photomultiplier assembly 9; The feed circuit of photomultiplier transit tube body 10 are electric resistance partial pressure type circuit.
See Fig. 2 and Fig. 3, the regulator 11 of feed circuit is positioned on point pressing plate 6; Pressing plate 6 upper surface is divided to be provided with data-out port 12 and high-voltage power supply interface 13; Feed circuit are connected with extraneous power supply by high-voltage power supply interface 13; The data output end of photomultiplier transit tube body 5 is connected with detector test platform by data-out port 12; Be provided with silicone oil between bottom crystal assembly 7 top and photomultiplier assembly 9, silicone oil has remarkable thermotolerance, radiation resistance, electrical insulating property and less surface tension etc.
Continue see Fig. 1 and Fig. 2, crystal module 4 is fixed by multiple spring clip 14 and photomultiplier assembly 9; Further, between spring clip 14 and photomultiplier assembly 9, be provided with pipe holder 21, be bolted between spring clip 14 and pipe holder 21; The material of spring clip 14 is spring steel material, and spring steel has excellent metallurgical quality and surface quality.
Radiation source capsule 2 comprises: radioactive source box body 15, radioactive source 16 and radioactive source box base 17; Radioactive source 16 is arranged on radioactive source box base 17; Radioactive source box body 15 is provided with upper cover 18, and upper cover 18 is provided with mounting hole 19; Detector 1 lower end is placed in mounting hole 19, and is positioned by location-plate 24, and radioactive source 16 and crystal module 4 are oppositely arranged; Radioactive source 16 is cylindrical radioactive source; Radioactive source box base 17 is provided with circular hole, and radioactive source 16 is installed in circular hole; Radioactive source 16 is nuclide emission source, and in embodiment of the present utility model, radioactive source 16 is gamma-rays radioactive source; The material of radioactive source box body 15 and radioactive source box base 17 is shielding material.
The gamma-rays that radioactive source 16 is launched, bottom detector box body 3, be irradiated to crystal module 4, crystal module 4 produces fluorescence, fluorescence incides on photomultiplier transit tube body 10, photomultiplier transit tube body 10 is through opto-electronic conversion and amp pulse electric current, pulse current is transferred to detector test platform by data-out port 12, test platform demonstrates the peak position of the energy spectrogram of each photomultiplier transit tube body 10, and the enlargement factor of photomultiplier transit tube body 10 is directly proportional to its current gain, so by regulating regulator 11, change the intrinsic standoff ratio of feed circuit, the enlargement factor of photomultiplier can be changed, make each photomultiplier energy spectrogram peak position of detector consistent, complete the debugging of photomultiplier transit tube body 10 enlargement factor consistance, photomultiplier transit tube body 10 after debugging assembles the detector 1 obtained again with crystal array, crystal bar position is accurate, detector 1 resolution improves, the picture quality of PET scanner obviously gets a promotion.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. a photomultiplier debugging apparatus, is characterized in that, comprising: detector and the radiation source capsule be positioned at below described detector;
Described detector comprises: detector box body, the crystal module being positioned at described detector box body, photomultiplier transit tube module and point pressing plate; Wherein, described crystal module is positioned at below described photomultiplier transit tube module, and described point of pressing plate is positioned at above described photomultiplier transit tube module; Described point of pressing plate is arranged on described detector box body top;
Described crystal module comprises: crystal assembly and crystal bulk; Described crystal bulk is installed on described crystal assembly; Described photomultiplier transit tube module comprises: photomultiplier assembly and multiple photomultiplier transit tube body; Described multiple photomultiplier transit tube body is arranged on described photomultiplier assembly; The feed circuit of described photomultiplier transit tube body are electric resistance partial pressure type circuit; The regulator of described feed circuit is positioned on described point pressing plate; Described point of pressing plate upper surface is provided with data-out port and high-voltage power supply interface; Described feed circuit are connected with extraneous power supply by described high-voltage power supply interface; The data output end of described photomultiplier transit tube body is connected with detector test platform by described data-out port; Described crystal module is fixed by multiple spring clip and described photomultiplier assembly;
Described radiation source capsule comprises: radioactive source box body, radioactive source and radioactive source box base; Described radioactive source is arranged on described radioactive source box base; Described radioactive source box body is provided with upper cover, is covered with mounting hole on described; Described detector lower end is placed in described mounting hole, and is positioned by location-plate; Described radioactive source and described crystal module are oppositely arranged.
2. photomultiplier debugging apparatus as claimed in claim 1, it is characterized in that, described photomultiplier transit tube module is provided with 4 described photomultiplier transit tube bodies.
3. photomultiplier debugging apparatus as claimed in claim 1, is characterized in that, be provided with box joint between described detector box body and described point of pressing plate.
4. photomultiplier debugging apparatus as claimed in claim 1, is characterized in that, be provided with pipe holder between described spring clip and described photomultiplier assembly, be bolted between described spring clip and described pipe holder.
5. photomultiplier debugging apparatus as claimed in claim 1, it is characterized in that, the material of described spring clip is spring steel material.
6. photomultiplier debugging apparatus as claimed in claim 1, it is characterized in that, described crystal assembly comprises crystal base plate and crystal holder; Described crystal holder lower end is connected with described crystal base plate.
7. photomultiplier debugging apparatus as claimed in claim 1, it is characterized in that, described radioactive source is cylindrical radioactive source; Described radioactive source box base is provided with circular hole, and described radioactive source is installed in described circular hole.
8. photomultiplier debugging apparatus as claimed in claim 1, it is characterized in that, described radioactive source is nuclide emission source.
9. photomultiplier debugging apparatus as claimed in claim 1, is characterized in that, is provided with silicone oil between bottom described crystal assembly top and described photomultiplier assembly.
10. photomultiplier debugging apparatus as claimed in claim 1, is characterized in that, the material of described radioactive source box body and radioactive source box base is shielding material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420524473.7U CN204086557U (en) | 2014-09-12 | 2014-09-12 | A kind of photomultiplier debugging apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420524473.7U CN204086557U (en) | 2014-09-12 | 2014-09-12 | A kind of photomultiplier debugging apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204086557U true CN204086557U (en) | 2015-01-07 |
Family
ID=52179258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420524473.7U Expired - Fee Related CN204086557U (en) | 2014-09-12 | 2014-09-12 | A kind of photomultiplier debugging apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204086557U (en) |
-
2014
- 2014-09-12 CN CN201420524473.7U patent/CN204086557U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Catana | Development of dedicated brain PET imaging devices: recent advances and future perspectives | |
| CN107320121A (en) | Positron emission tomography photon detection device | |
| CN102288983A (en) | Gamma ray imaging spectrometer | |
| CN105467427A (en) | Silicon photomultiplier chip test device | |
| CN103245680A (en) | Fast neutron imaging method and system based on time-of-flight method | |
| CN105467422A (en) | Photomultiplier debugging device | |
| CN104076385A (en) | Gamma ray radiation quantity detection device and detection method thereof | |
| CN205507100U (en) | Environment X, gamma dose rate measuring apparatu | |
| CN204086557U (en) | A kind of photomultiplier debugging apparatus | |
| CN204086174U (en) | A kind of light guide test device | |
| CN109884683A (en) | A kind of radiation detector assembly | |
| CN204086561U (en) | A kind of silicon photomultiplier apparatus for testing chip | |
| CN105444989A (en) | Light guide test device | |
| CN201501875U (en) | Constant-current culture apparatus and gamma ray dynamic monitoring device utilizing same | |
| CN103424764B (en) | Measuring device for dose distribution of ray radiation field | |
| CN204705719U (en) | A kind of portable radioactive contamination meter | |
| KR101496275B1 (en) | Device for studying nuclear medicine imaging camera and studying method thereby | |
| CN205880232U (en) | Two probes scintillation body detector | |
| Chambron et al. | A pixellated γ-camera based on CdTe detectors clinical interests and performances | |
| CN206133043U (en) | Multi -functional scintillating crystals test platform | |
| CN203630363U (en) | Measuring device for dose distribution of ray radiation field | |
| Braem et al. | AX-PET: A novel PET detector concept with full 3D reconstruction | |
| CN205107712U (en) | Special gamma camera of thyroid gland based on CZT | |
| CN2149626Y (en) | Portable gold analysing instrument | |
| KR102104537B1 (en) | distance correction gamma probe and method of measuring radiation intensity thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20160831 Granted publication date: 20150107 |
|
| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20170228 Granted publication date: 20150107 |
|
| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20170228 Granted publication date: 20150107 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20190828 Granted publication date: 20150107 |
|
| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190828 Granted publication date: 20150107 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220828 Granted publication date: 20150107 |
|
| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |