CN102023308B - Radiation imaging system based on radiation photoluminescence image board with radiation memory function - Google Patents
Radiation imaging system based on radiation photoluminescence image board with radiation memory function Download PDFInfo
- Publication number
- CN102023308B CN102023308B CN 201010281939 CN201010281939A CN102023308B CN 102023308 B CN102023308 B CN 102023308B CN 201010281939 CN201010281939 CN 201010281939 CN 201010281939 A CN201010281939 A CN 201010281939A CN 102023308 B CN102023308 B CN 102023308B
- Authority
- CN
- China
- Prior art keywords
- radiation
- image
- position sensitive
- forming system
- image plate
- 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.)
- Active
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 64
- 238000003384 imaging method Methods 0.000 title claims abstract description 17
- 230000006386 memory function Effects 0.000 title claims abstract description 14
- 238000005424 photoluminescence Methods 0.000 title abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 33
- 230000005284 excitation Effects 0.000 claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 14
- 239000005030 aluminium foil Substances 0.000 claims description 8
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 4
- 230000000873 masking effect Effects 0.000 claims description 4
- 239000005365 phosphate glass Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000005251 gamma ray Effects 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002285 radioactive effect Effects 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000009206 nuclear medicine Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 208000026106 cerebrovascular disease Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011109 contamination Methods 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
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Abstract
The invention belongs to the technical field of radiation measurement, and particularly relates to a radiation imaging system based on a radiation photoluminescence image plate with a radiation memory function. An image plate made of a radiation photoluminescence material is arranged between the pinhole collimator and the position sensitive light detection module; an excitation light source corresponding to the radiation photoluminescence material is arranged at the rear end of the shading frame body; the rear end of the shading frame body is also provided with a shutter. The radiation imaging system provided by the invention can measure the X-ray or gamma ray with extremely low intensity, and can be widely applied to the radiation intensity and radiation imaging measurement in low radiation places.
Description
Technical field
The invention belongs to the radiometric technique field, be specifically related to a kind of radiation image-forming system based on the radiophotostimulation image plate with radiation memory function.
Background technology
Nuclear Medicine Dept of hospital can be by analyzing the distributed image of radioactive nuclide in human organ, various organ diseases such as diagnosis patient cardiovascular and cerebrovascular disease, tumour.Be used for the radiation image-forming system of the radiographic source distribution measuring of X ray or gamma rays, be called gamma camera usually, at first grow up at the field of nuclear medicine.
There have been a lot of medical apparatus corporation, Ltds to develop the gamma camera system that is used for human body X ray or gamma rays distribution measuring so far.These gamma camera are mainly by collimating apparatus, the scintillation crystal plate, and the position sensitive light-detecting device is formed.
It is very big that the material of collimating apparatus is generally atomic number, to X ray or the extraordinary metal material of gamma rays blocking effect, and such as lead, tungsten etc.The collimating apparatus kind mainly contains parallel aperture collimator, pinhole collimator, diverging collimator, convergent type collimating apparatus; Be used for direction and scope that restriction enters the incident ray in the gamma camera visual field.
Ray is through arriving the scintillation crystal plate after the collimating apparatus.The material of scintillation crystal is mainly NaI (Tl) crystal, also can be CsI or BGO etc.Energy deposition takes place in ray in scintillation crystal, the energy of deposition discharges in the position of energy deposition in the mode of fluorescence again.
The position sensitive light-detecting device of scintillation crystal plate back can be measured position and intensity that fluorescence discharges, thereby reaches the purpose of imaging.The position sensitive light-detecting device can be single position sensitive photo-multiplier tube, perhaps the position sensitive photo-multiplier tube array.The entrance window of position sensitive photo-multiplier tube is pressed close to the scintillation crystal plate by photoconduction, reaches the measurement purpose.The position sensitive light-detecting device also can be charge-coupled device (CCD) or CMOS.
This class gamma camera system that grows up at present, the real time imagery that can be used for X-radiation field or gamma radiation field is measured.In the nuclear medicine application, because the radioactive level in the human body is higher usually, can utilize this class gamma camera system to obtain nucleic static and dynamic continuous distributed image in vivo easily.But the increased radioactivity that this class gamma camera system is used for the nuclear industry field is measured, and when measuring such as the radioactive contamination distributed image in certain place, then meets difficulty through regular meeting.Radiation level such as place to be measured or object is very low, when being lower than the minimum detection limit of existing this class gamma camera system, so, with the distributed image of measuring less than radioactive source.Under existing this type systematic, by prolonging the method for Measuring Time, do not have tangible effectiveness, because this can not improve the signal to noise ratio (S/N ratio) of measurement yet.
Summary of the invention
(1) goal of the invention
The object of the invention is to solve the problem that gamma camera system in the prior art can't survey faint radiation signal.
(2) technical scheme
For achieving the above object, the invention provides following technical scheme:
A kind of radiation image-forming system based on the radiophotostimulation image plate with radiation memory function, comprise the shading framework, pinhole collimator, position sensitive photodetection module, control and image processing module, described pinhole collimator is positioned at the shading frame forward end, position sensitive photodetection module places shading framework rear end and its photodetection face over against pinhole collimator, control links to each other with position sensitive photodetection module with image processing module, and its key is: also be equipped with the image plate of being made by the radiophotostimulation material with radiation memory function between described pinhole collimator and position sensitive photodetection module; Be equipped with the excitation source corresponding with described radiophotostimulation material in the rear end of described shading framework; Also be equipped with shutter in described shading framework rear end; Described excitation source be round shape be evenly distributed on position sensitive photodetection module around, position sensitive photodetection module is provided with the optical filter that can filter exciting light at the end towards image plate, light masking flap shutter is installed between image plate and the exciting light optical filter.
The pin hole place of described pinhole collimator also is equipped with anti-dazzling screen, and described anti-dazzling screen is made by the material that is easy to transmitted X-rays and gamma rays.
Be equipped with heater strip between described pinhole collimator and the image plate, described heater strip is helicoidal structure.
Make the phosphate glass that the used radiophotostimulation material of image plate is the silver ion activation, perhaps other has the radiophotostimulation material of radiation memory function.
Described image plate is coated with one deck aluminium foil near a side of pinhole collimator.
Described heater strip and image plate can move forward and backward along the radiation image-forming system central axis direction in the shading framework.
Described position sensitive photodetection module comprises shading outer wall and the photodetector that is placed in one, and is equipped with the optical filter that can filter exciting light towards an end of image plate, and its end near control and image processing module is equipped with power interface and data-interface.Described photodetector is position sensitive photo-multiplier tube, CCD or CMOS.
When described photodetector is position sensitive photo-multiplier tube, image plate is pressed close to the exciting light optical filter, can measure position and the strength information of the fluorescence signal that the radiophotostimulation material sends.
When described photodetector is CCD or CMOS, between described optical filter and CCD or CMOS, is equipped with conical fiber and becomes video beam.
When described photodetector is CCD or CMOS, between described optical filter and CCD or CMOS, be equipped with imaging lens group, and the sensitive chip of described CCD or CMOS is positioned on the picture plane of imaging lens group.
(3) beneficial effect
Because the image plate that described radiophotostimulation material is made can be stored as the sedimentary energy of incident X-rays or gamma rays fluorescence centre and accumulate for a long time, in the process of this signal accumulation, because position sensitive photodetection module is in closed condition, can not increase the electronics noise, it is a process that can significantly improve signal to noise ratio (S/N ratio), therefore radiation image-forming system provided by the present invention can be measured intensity extremely low X ray or gamma rays, and radiation intensity and the radiant image that can be widely used in low radiation place are measured.
Description of drawings
Fig. 1 is the structural drawing based on the radiation image-forming system of the radiophotostimulation image plate with radiation memory function;
Fig. 2 is the sectional view of A-A direction among Fig. 1;
Fig. 3 is first instantiation of position sensitive photo measure device among Fig. 1;
Fig. 4 is second instantiation of position sensitive photo measure device among Fig. 1;
Fig. 5 is the 3rd instantiation of position sensitive photo measure device among Fig. 1;
Internal system structural map when Fig. 6 carries out data read for position sensitive photo measure device;
Structural representation when Fig. 7 heats image plate for the erasure signal heater strip.
Embodiment
The present invention will be further described below in conjunction with specific embodiment.
Embodiment one
The radiation image-forming system based on the radiophotostimulation image plate with radiation memory function that present embodiment provides as shown in Figure 1, comprises shading framework 5, pinhole collimator 1, position sensitive photodetection module 2, control and image processing module 9 etc.Described pinhole collimator 1 is positioned at shading framework 5 front ends, position sensitive photodetection module 2 places shading framework 5 rear ends and its photodetection face over against pinhole collimator 1, control links to each other with position sensitive photodetection module 2 with image processing module 9, key is, also is equipped with the image plate of being made by the radiophotostimulation material 7 between described pinhole collimator 1 and position sensitive photodetection module 2; Be equipped with the excitation source 3 corresponding with described radiophotostimulation material in the rear end of described shading framework 5; Also be equipped with shutter 4 in described shading framework 5 rear ends.
The ray that measured X ray or gamma ray radiation source send, the pin hole by pinhole collimator 1 enters radiation image-forming system.Described pinhole collimator 1 has the advantages that the visual field is big, imaging is little, pinhole collimator 1 adopt can radiation-screening the very big metal material of atomic number make, as lead, tungsten etc.The pin hole place of pinhole collimator 1 also is equipped with very thin anti-dazzling screen, and described anti-dazzling screen is made by the material that is easy to transmitted X-rays and gamma rays, such as aluminium foil etc.
Carry out record from X ray or the gamma rays of the pin hole incident of pinhole collimator 1 by image plate 7, image plate 7 is installed in the shading framework 5 by fixed mount 6.Described image plate 7 is by radiophotostimulation (the Radio photoluminescence that can convert incident X-rays or gamma rays to fluorescence signal, RPL) material is made, the above-mentioned material component is preferably the phosphate glass of silver ion activation, perhaps also can select other to have the radiophotostimulation material of radiation memory function.Above-mentioned radiation radiophotostimulation material with radiation memory function can convert the sedimentary energy of incident X-rays or gamma rays to fluorescence centre at the incidence point place and accumulate, and sedimentary energy is more big, and the fluorescence centre of generation is just more many.Under the very low occasion of radiation level, can increase the Measuring Time of this radiation image-forming system, make the abundant energy of deposition in the radiophotostimulation material, store abundant fluorescence centre, after preparing, read with position sensitive photodetection module 2.
Be equipped with heater strip 11 between described pinhole collimator 1 and the image plate 7, its effect is by heating image plate 7 fluorescence signal that it is stored to be eliminated fully after one-shot measurement is finished.The structure of heater strip 11 is the spiral fashion resistive heater of a dish even thickness as shown in Figure 2, is installed between pinhole collimator 1 and the image plate 7.Heater strip 11 and image plate 7 all can be controlled and be moved forward and backward in shading framework 5 by stepper motor or servomotor.When not needing to eliminate the signal of storing in the radiophotostimulation material, heater strip 11 is close to the side near pinhole collimator 1, does not influence pin-hole imaging; After the radiant image measurement is finished, eliminate the signal of having stored in the radiophotostimulation material if desired, when preparation is measured next time, then need this heater strip 11 is pressed close to image plate 7 along the radiation image-forming system central axis direction, about 7 to 400 ℃ of image plates of heating also continue for some time, and reach the purpose of eliminating original signal.
Side near pinhole collimator 1 on image plate 7 is coated with one deck aluminium foil.Aluminium foil at first can shading, because this radiophotostimulation material itself is transparent, and the position sensitive photodetector that the position sensitive photodetection module 2 of image plate 7 back is used needs shading; Secondly, aluminium foil is hot good conductor, when for the signal of eliminating the storage of radiophotostimulation material it being heated, helps image plate 7 thermally equivalents that the radiophotostimulation material is made.
Excitation source 3 places the rear end of shading framework 5, be round shape be evenly distributed on position sensitive photodetection module 2 around.At the phosphate glass of making the silver ion activation that image plate 7 adopts in the present embodiment, adopting wavelength is that light emitting diode matrix about 370nm is as excitation source.After image plate 7 is ionized the radiant exposure certain hour, open this light emitting diode, the fluorescence centre of storage on the image plate 7 is excited, making image plate 7 produce wavelength is fluorescence between the 600nm to 700nm, is read by position sensitive photodetection module 2.By the intensity distributions of lumination of light emitting diode in the adjustment light emitting diode matrix, and conditioned reflex on every side, can guarantee to shine the only equally distributed of image plate 7 surfaces.
Described position sensitive photodetection module 2 comprises shading outer wall, power interface 15, data-interface 16 and photodetector, end towards image plate 7 is equipped with the optical filter 8 that can filter exciting light, and its end near control and image processing module 9 is equipped with power interface 15 and data-interface 16.The photodetector that adopts in the present embodiment is position sensitive photo-multiplier tube 14, as shown in Figure 3, when utilizing the de excitation fluorescence signal on the position sensitive photo-multiplier tube 14 measurement image plates 7, the image plate 7 exciting light optical filter 8 of trying one's best is measured.The optical filter 8 that be used for to filter exciting light is between image plate 7 and position sensitive photo-multiplier tube 14 and be close to the test surface of position sensitive photo-multiplier tube 14.Be that excitation source 3 about 370nm and fluorescent wavelength ranges are at the image plate 7 of 600nm to 700nm at wavelength, the optical filter 8 that adopts in the present embodiment is that cutoff wavelength is the long wave pass filter of 450nm, the fluorescence that sends when only allowing radiophotostimulation material de excitation sees through, and the exciting light that excitation source 3 is sent can't the sensitive photomultiplier 14 in in-position.
Interface, power interface 15 and data-interface 16 places of position sensitive photodetection module 2 and shading framework 5 all carry out airtight shading treatment.The aluminium foil that covers on pinhole collimator 1, shading framework 5 and the image plate 7 is realized the lucifuge to whole measuring system together.
Control module is mainly used in some mechanical mechanisms of radiation image-forming system inside, and the control of on-off circuit.Control module is responsible for the control to the excitation source switch.Control module is also controlled radiophotostimulation images of materials plate along the axial displacement of radiation image-forming system, reaches the control survey visual field, and with image plate try one's best the purpose of position sensitive photo measure device.Control module needs to control the erasure signal heater strip simultaneously along the movement of central shaft.Control module also needs to control the light masking flap shutter that is installed between image plate and the exciting light optical filter, when position sensitive photo measure device does not carry out the reading measurement, need all the time this light masking flap shutter to be closed, to realize the shading state to position sensitive photo measure device.Image processing module is used for analyzing the data that obtain from the position sensitive photo detecting unit, realizes the final imaging measurement function to distribution of radiation.Image processing module will be united with control module usually and be cooperated operation, to reach the optimal imaging effect.
When the radiant image that utilizes above-mentioned radiation image-forming system to carry out X ray or gamma radiation field is measured, measure the size in the visual field at first as required, adjust fixed mount 6 from the distance of pinhole collimator 1 by control module, excitation source 3 and shutter 4 all are in closed condition, and erasure signal heater strip 11 is close to a side of pinhole collimator 1.After the regular hour irradiation, image plate 7 has been stored the image information that radiation source intensity distributes by the sedimentary energy of X ray or gamma rays.Open lucifuge door 4 by control module then, and fixed mount 6 is moved right to pressing close to position sensitive photodetection module 2, as shown in Figure 6.Open excitation source 3 this moment, and the fluorescence centre of the storage fluorescence signal that penetrates that is stimulated is measured by position sensitive photodetection module 2 on the image plate 7, and the image processing module by the back, obtains the image of distribution of radiation.After the radiant image measurement is finished, close excitation source 3 and shutter 4 by control module.Carry out next time if desired and measure, then earlier heater strip 11 is moved to the aluminium foil of image plate 7 outer side covers by control module, as shown in Figure 7, use heater strip after 11 heating a period of times, close, can measure afterwards next time.
Present embodiment provide radiation image-forming system, can be according to the power of radiation field, regulate the time interval that single reads the distributed image signal of storing on the radiophotostimulation material, thereby when guaranteeing image quality, realize continuous imaging measurement.Simultaneously, because the radiophotostimulation material is a kind of material that can repeat to read, that is to say before the signal of in not opening erasure signal heater strip removal of images plate, storing, can read repeatedly to survey to image plate, but have the ability of repetition radiation field distribution image.
Embodiment two
The other technologies scheme is constant, is with the difference of embodiment one:
The photodetector that adopts in the present embodiment is charge-coupled device (CCD) or CMOS12, and is equipped with conical fiber becomes video beam 10 between described optical filter 8 and CCD/CMOS12, as shown in Figure 4.The fluorescence signal that image plate 7 is excited to send becomes video beam 10 to be coupled to the surperficial and measured of CCD/CMOS12 by conical fiber, has kept positional information and strength information simultaneously.
Embodiment three
The other technologies scheme is constant, is with the difference of embodiment one:
The photodetector that adopts in the present embodiment is charge-coupled device (CCD) or CMOS12, between described optical filter 8 and CCD/CMOS12, be equipped with imaging lens group 13, the sensitive chip of described CCD/CMOS12 is positioned on the picture plane of imaging lens group 13, as shown in Figure 5.The fluorescence signal that image plate 7 is excited to send is also measured by the surface that taper imaging lens group 13 is imaged onto CCD/CMOS12, has kept positional information and strength information simultaneously.
Above content be in conjunction with preferred embodiment to specifying that the present invention does, can not assert that the specific embodiment of the present invention only limits to these explanations.Concerning the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deductions and conversion, all should be considered as belonging to protection scope of the present invention.
Claims (9)
1. radiation image-forming system based on the radiophotostimulation image plate with radiation memory function, comprise shading framework (5), pinhole collimator (1), position sensitive photodetection module (2), control and image processing module (9), described pinhole collimator (1) is positioned at shading framework (5) front end, position sensitive photodetection module (2) places shading framework (5) rear end and its photodetection face over against pinhole collimator (1), control links to each other with position sensitive photodetection module (2) with image processing module (9), it is characterized in that: also be equipped with the image plate of being made by the radiophotostimulation material with radiation memory function (7) between described pinhole collimator (1) and position sensitive photodetection module (2); Be equipped with the excitation source (3) corresponding with described radiophotostimulation material in the rear end of described shading framework (5); Also be equipped with shutter (4) in described shading framework (5) rear end; Described excitation source (3) be round shape be evenly distributed on position sensitive photodetection module (2) around, position sensitive photodetection module (2) is provided with the optical filter (8) that can filter exciting light at the end towards image plate (7), and light masking flap shutter (4) is installed between image plate (7) and the exciting light optical filter (8).
2. radiation image-forming system according to claim 1, it is characterized in that: the pin hole place of described pinhole collimator (1) also is equipped with anti-dazzling screen, and described anti-dazzling screen is made by the material that is easy to transmitted X-rays and gamma rays.
3. radiation image-forming system according to claim 1, it is characterized in that: be equipped with heater strip (11) between described pinhole collimator (1) and the image plate (7), described heater strip (11) is helicoidal structure.
4. radiation image-forming system according to claim 1 is characterized in that: make the phosphate glass that the used radiophotostimulation material with radiation memory function of image plate (7) is the silver ion activation.
5. radiation image-forming system according to claim 1 is characterized in that: described image plate (7) is coated with one deck aluminium foil near a side of pinhole collimator (1).
6. radiation image-forming system according to claim 3, it is characterized in that: described heater strip (11) and image plate (7) can move forward and backward along the radiation image-forming system central axis direction in shading framework (5).
7. according to the described radiation image-forming system of each claim in the claim 1 ~ 6, it is characterized in that: described position sensitive photodetection module (2) comprises shading outer wall and the photodetector that is placed in one, end towards image plate (7) is equipped with the optical filter (8) that can filter exciting light, and its end near control and image processing module (9) is equipped with power interface (15) and data-interface (16); Described photodetector is position sensitive photo-multiplier tube (14).
8. according to the described radiation image-forming system of each claim in the claim 1 ~ 6, it is characterized in that: described position sensitive photodetection module (2) comprises shading outer wall and the photodetector that is placed in one, end towards image plate (7) is equipped with the optical filter (8) that can filter exciting light, and its end near control and image processing module (9) is equipped with power interface (15) and data-interface (16); Described photodetector is CCD or CMOS(12), and at described optical filter (8) and CCD or CMOS(12) between be equipped with conical fiber and become video beam (10).
9. according to the described radiation image-forming system of each claim in the claim 1 ~ 6, it is characterized in that: described position sensitive photodetection module (2) comprises shading outer wall and the photodetector that is placed in one, end towards image plate (7) is equipped with the optical filter (8) that can filter exciting light, and its end near control and image processing module (9) is equipped with power interface (15) and data-interface (16); Described photodetector is CCD or CMOS(12), and at described optical filter (8) and CCD or CMOS(12) between be equipped with imaging lens group (13), described CCD or CMOS(12) sensitive chip be positioned at imaging lens group (13) the picture plane on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010281939 CN102023308B (en) | 2010-09-14 | 2010-09-14 | Radiation imaging system based on radiation photoluminescence image board with radiation memory function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010281939 CN102023308B (en) | 2010-09-14 | 2010-09-14 | Radiation imaging system based on radiation photoluminescence image board with radiation memory function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102023308A CN102023308A (en) | 2011-04-20 |
| CN102023308B true CN102023308B (en) | 2013-07-10 |
Family
ID=43864839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010281939 Active CN102023308B (en) | 2010-09-14 | 2010-09-14 | Radiation imaging system based on radiation photoluminescence image board with radiation memory function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102023308B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105011956A (en) * | 2015-05-08 | 2015-11-04 | 西安电子科技大学 | Optical imaging system for medical radionuclide and medical nuclide detection method |
| CN111839556A (en) * | 2019-04-28 | 2020-10-30 | 核工业西南物理研究院 | Vacuum dynamic sealing imaging pinhole and radioactive source composite adjusting mechanism |
| CN114177542A (en) * | 2020-09-15 | 2022-03-15 | 西安大医集团股份有限公司 | Dose control method, device, controller and system in radiotherapy |
| CN114721033B (en) * | 2022-06-10 | 2022-08-16 | 中国工程物理研究院激光聚变研究中心 | Aiming method and device of detection equipment based on X-ray pinhole imaging principle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59143980A (en) * | 1983-02-04 | 1984-08-17 | Toshiba Glass Co Ltd | X ray detecting plate |
| CN1139843C (en) * | 2000-09-22 | 2004-02-25 | 阮慎康 | Method for preparing X-ray image storage plate |
| CN101718875A (en) * | 2009-12-11 | 2010-06-02 | 中国原子能科学研究院 | Gamma ray imaging device |
| CN201812042U (en) * | 2010-09-14 | 2011-04-27 | 中国原子能科学研究院 | Radiation imaging system based on photoluminescence image plate with radiation memory function |
| CN201917666U (en) * | 2010-09-14 | 2011-08-03 | 中国原子能科学研究院 | Radiation imaging system based on radiophotolumine scence image plate with radiation memory function |
-
2010
- 2010-09-14 CN CN 201010281939 patent/CN102023308B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102023308A (en) | 2011-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10914847B2 (en) | High resolution imaging system for digital dentistry | |
| US8779371B2 (en) | Scintillator, method for manufacturing scintillator, and radiation detector | |
| JP4063324B2 (en) | System for quantitative radiography | |
| US5773829A (en) | Radiation imaging detector | |
| US9384864B2 (en) | High resolution imaging system for digital dentistry | |
| US20100140487A1 (en) | X-ray detector including scintillator, a lens array, and an image intensifier | |
| NL7909037A (en) | DEVICE FOR RADIOGRAPHY. | |
| US11779778B2 (en) | Ionizing-radiation beamline monitoring system | |
| CN103149225B (en) | Novel dual-energy X-ray imaging detector | |
| CN101968545B (en) | Radiation imaging system based on photoluminescence image board with radiation memory function | |
| CN102023308B (en) | Radiation imaging system based on radiation photoluminescence image board with radiation memory function | |
| CA2572713A1 (en) | Cerenkov x-ray detector for portal imaging | |
| CN201917666U (en) | Radiation imaging system based on radiophotolumine scence image plate with radiation memory function | |
| CN201812042U (en) | Radiation imaging system based on photoluminescence image plate with radiation memory function | |
| JP2008051626A (en) | Line sensor, line sensor unit and radiation nondestructive inspection system | |
| US20160170042A1 (en) | Radiation detection apparatus and radiation detection sheet | |
| EP3012668A2 (en) | Method and apparatus for imaging of radiation sources | |
| US20130114798A1 (en) | Digital x-ray field and light field alignment | |
| Yaffe et al. | Development of a digital mammography system | |
| KR20160115565A (en) | Sensing probe, apparatus and method for detecting fiber-optic beta/gamma image using the same | |
| US8735837B2 (en) | Gamma camera system | |
| US7122823B2 (en) | Thick clear crystal photostimulable phosphor plate for X-ray imaging | |
| Mettivier et al. | High Resolution ${}^{125} $ I Pinhole SPECT Imaging of the Mouse Thyroid With the MediSPECT Small Animal CdTe Scanner | |
| Nagarkar et al. | Microcolumnar CsI (Tl) films for small animal SPECT | |
| Hachadorian et al. | Cherenkov and scintillation imaging dosimetry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |