CN103006250A - Scanning device for medical detector - Google Patents
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- CN103006250A CN103006250A CN2012105145559A CN201210514555A CN103006250A CN 103006250 A CN103006250 A CN 103006250A CN 2012105145559 A CN2012105145559 A CN 2012105145559A CN 201210514555 A CN201210514555 A CN 201210514555A CN 103006250 A CN103006250 A CN 103006250A
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Abstract
The invention provides a scanning device for a medical detector, which can be used for increasing the correcting efficiency and reducing unnecessary radiation on operating personnel and patients. The scanning device provided by the invention comprises a rotating ring and bar sources arranged on the inner peripheral wall of the rotating ring, wherein at least two bar sources are provided, and are distributed along the circumferential direction of the rotating ring; and each bar source extends along the axial direction of the rotating ring. In the scanning device, the bar sources are uniformly distributed along the circumferential direction of the rotating ring, and certain modules which are nearest to each bar source can be used for detecting simultaneously when the bar sources rotate around the detector, so that the time required for finishing correction is far less than that of the conventional single-bar-source scanning under the condition that the volume of acquired data is kept constant; when the correction time is reduced, gain setting of the detector can be finished within a short period of time for entering a testing program, and the operation efficiency is effectively increased; and moreover, the bar sources are arranged, so that unnecessary radiation on operating personnel and patients is reduced.
Description
Technical field
The present invention relates to technical field of medical treatment mechanical, particularly relate to a kind of scanning means of medical detector.
Background technology
At present, PET(positron emission tomography, positron emission tomography) and CT(computed tomography, the imaging of motor calculation machine x-ray tomography) technology is widely used in field of medical technology.Usually, before PET and the use of CT product, need to carry out regular correct scan, by its detector scanning rod source, with the gain setting of realization to detector, thereby so that detector is operated in optimum state, and then improve the picture quality that detector obtains.
The scanning means of existing medical detector comprises rotating ring and is installed in the interior excellent source of list of described rotating ring.During use, in the cup of detector as for rotating ring, drive excellent source around sonde rotary by rotating ring, until the modules of detector is finished data acquisition, realize the correction of detector.
In above-mentioned scanning process, usually need rotating ring just can finish around detector 80 times of enclosing, expending about 9 minutes of rotating.As everyone knows, excellent source is larger to the radiation of human body, and along with the raising of radiant intensity and the prolongation of radiated time, can cause to a certain degree infringement to human body.Above-mentioned existing scanning means, the radioactive intensity in single excellent source is 5 millicuries, and need to continue to carry out about 9 minutes, it is larger then to be in the radiation that near the scanning means doctor and patient be subject to, there is higher security risk, especially is unfavorable for being engaged in for a long time the medical worker's of PET and CT scan health.
Therefore, how designing a kind of scanning means to medical detector, proofread and correct efficient to improve, reduce radiant intensity, is the present technical issues that need to address of those skilled in the art.
Summary of the invention
The scanning means that the purpose of this invention is to provide a kind of medical detector can improve correction efficient, reduces the unnecessary radiation that operator and patient are subject to.
For solving the problems of the technologies described above, the invention provides a kind of scanning means of medical detector, described scanning means comprises rotating ring and is arranged on the excellent source of described rotating ring internal perisporium, described excellent source is at least two, and along the circumferential distribution of described rotating ring, each described excellent source is along the setting that extends axially of described rotating ring.
Scanning means of the present invention, circumferentially be distributed with at least two excellent sources at rotating ring, when excellent source rotated around detector, each excellent source all can be scanned the detecting module in its sweep limits, can survey simultaneously from several modules that each excellent source is nearest; The increase of rod source quantity can increase the module number of finishing detection in the unit interval, then in the situation that the data volume that gathers remains unchanged, detector is finished and is proofreaied and correct the required time and will be far smaller than the excellent source scanning of existing list, and along with increasing of excellent source quantity, proofread and correct the required time can further reduce; When reduced correction time, detector can be finished gain within a short period of time and arrange, and then enters test program, Effective Raise operating efficiency; In addition, the setting in double stick source or how excellent source has also reduced the unnecessary radiation that operator and patient are subject to.
Preferably, circumferentially uniform along described rotating ring of described excellent source.
Preferably, the excellent source of list that is three 1 millicuries, described excellent source.The present invention can adopt the setting in three rod sources, and three excellent sources of list, 120 degree of being separated by are distributed on the circumference of rotating ring, can fully satisfy the scanning demand of detector; And the activity in single excellent source is 1 millicurie only, in order to alleviate the radiation to operator and patient.
Preferably, described scanning means also comprises the chamber, excellent source that is arranged on described rotating ring port, and chamber, described excellent source has be used to the tract that supports described excellent source, and described excellent source is pushed impeller in the described rotating ring jack from described tract.
In the port of rotating ring chamber, excellent source can also be set, then directly excellent source be pushed in the rotating ring by impeller, the whole rod motion that send is comparatively simple, and has simplified the process in mounting bar source.
Preferably, described tract is along the setting that extends axially of described rotating ring, and described impeller comprises the leading screw that be arranged in parallel with described tract and the grip slipper that cooperates with described leading screw, and described leading screw drives described grip slipper moving axially along described leading screw when rotating; The end in described excellent source has buckle, and the bottom of described tract is axially arranged with chute along it, and described buckle stretches out described chute; Described grip slipper is provided with the bayonet socket that stretches out the described buckle of described chute for clamping, and described grip slipper can drive described buckle and slide along described chute, moves axially along described tract in order to drive described excellent source.
For realizing the installation in excellent source, excellent source, grip slipper and tract can be mated setting, at tract chute is set axially, then the buckle of excellent source section can stretch out chute, again by grip slipper with the buckle clamping in excellent source and drive buckle and slide along chute, so that the driving rod source moves axially along tract, until stretch out from an end of described tract in excellent source, thereby enter in the jack of rotating ring, and then the process of the propelling movement of excellent source and installation is organically combined, simplified operation sequence; Impeller comprises grip slipper and leading screw, and it is simple in structure, is convenient to install and operation.
Preferably, described impeller comprises the motor that drives described leading screw rotation.
Preferably, chamber, described excellent source is provided with a plurality of tracts, and each described tract can dock with each jack of described rotating ring.At this moment, each tract can dock respectively with each jack of rotating cup, with the propelling movement in each excellent source of independent realization, and the motility that provides excellent source to install.
Preferably, each described tract is parallel and be intervally arranged in the same level face, described scanning means also comprises the transmission component that moves be used to promoting chamber, described excellent source along continuous straight runs, and described transmission component comprises the turn-screw that links to each other with chamber, described excellent source and drives the driving motor that described turn-screw rotates.
Each indoor tract of rod source can be arranged by along continuous straight runs, after the installation of finishing an excellent source, promoting chamber, excellent source by transmission component moves horizontally, thereby the excellent source in the next tract is moved to the jack place of rotating ring, and then finish the installation in next excellent source, to improve the automaticity of excellent source assembling.
Preferably, described scanning means also comprises the driving-belt of the outer peripheral face that is looped around described rotating ring end, and described driving-belt links to each other with electric rotating machine.
Preferably, the end of described rotating ring also is provided with a plurality of along its circumferential equally distributed support guide wheel, and each described support guide wheel and described driving-belt are pressed together on its outer peripheral face tangently.Support the periphery that guide wheel is pressed together on driving-belt, can assist the location of finishing driving-belt, improve the connection reliability of driving-belt and rotating ring.
Description of drawings
Fig. 1 is the perspective view of scanning means provided by the present invention in a kind of specific embodiment;
Fig. 2 is the side-looking structural representation of scanning means shown in Figure 1;
Fig. 3 is the plan structure sketch map of scanning means shown in Figure 1;
Fig. 4 is the partial cutaway schematic of a kind of set-up mode in chamber, excellent source provided by the present invention;
Fig. 5 is the structural representation of impeller provided by the present invention and a kind of set-up mode of transmission component;
Fig. 6 is the local enlarged diagram of a kind of set-up mode of impeller provided by the present invention.
The specific embodiment
Core of the present invention provides a kind of scanning means of medical detector, can improve correction efficient, reduces the unnecessary radiation that operator and patient are subject to.
In order to make those skilled in the art person understand better the present invention program, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the perspective view of scanning means provided by the present invention in a kind of specific embodiment; Fig. 2 is the longitudinal cross-section sketch map of scanning means shown in Figure 1.
In a kind of specific embodiment, scanning means of the present invention comprises rotating ring 1 and is installed at least two excellent sources 2 of rotating ring 1 internal perisporium, and each excellent source 2 is along the circumferential distribution of rotating ring 1, and each excellent source 1 is all along the setting that extends axially of rotating ring 1.
Can scanning means of the present invention mentioned above be further improved.For example, each excellent source 2 can circumferentially distributing at rotating cup 1 equably.When evenly distributing, can utilize more fully the energy in each excellent source 2, in the certain situation of the quantity in excellent source 2, evenly distribution can realize the maximization setting of sweep limits, improves scan efficiency.
The internal perisporium of rotating ring 1 can axially arrange special installation position, excellent source along it, in order to each excellent source 2 is fixed on its inwall; Jack can be arranged in rod source installation position, and excellent source 2 can be inserted and secured in the jack, can certainly adopt other conventional locate modes that excellent source 2 is positioned place, installation position, excellent source, such as clip etc.Rod source 2 can be elongated club shaped structure, and the end in excellent source 2 can adopt bending to arrange, and forms a buckle, in order to fasten with the end of rotating ring 1, guarantees to install and stablizes, as shown in fig. 1.
In preferred implementation shown in Figure 2, can adopt driving-belt 11 to realize the gyration of rotating ring 1, driving-belt 11 can be arranged on the outer peripheral face of rotating ring 1 end, and driving-belt 11 links to each other with electric rotating machine 12, so that driven rotary ring 1 constantly rotates under the driving of electric rotating machine 12; When rotating ring 1 rotated, also rotated thereupon in the excellent source 2 that is installed in the rotating ring 1, and ray can be sent in excellent source 2 in the process of motion, and then the rotating ring 1 circumferential detecting module that distributes is scanned, so that detector is realized gain setting.
Simultaneously, the periphery of driving-belt 11 can also arrange and support guide wheel 13, supports the tangent setting of outer peripheral face of guide wheel 13 and driving-belt 11, and can be pressed together on the endless belt of driving-belt 11; Support guide wheel 13 circumferentially evenly the distributing of rotating ring 1 and driving-belt 11, so that fixing circumferentially supporting equably of driving-belt 11, thereby improve the reliability that is connected between driving-belt 11 and the rotating ring 1.
The number that supports guide wheel 13 can correspondingly arrange according to the size of driving-belt 11 and rotating ring 1 and the degree of reliability that connects between the two: is connected when comparatively relaxing the number of increase support guide wheel 13 that can be suitable between long or driving-belt 11 and the rotating ring 1 when driving-belt 11; Certainly, when driving-belt 11 was arranged on the end of rotating ring 1 with larger pretightning force tensioning, when being connected between driving-belt 11 and the rotating ring 1 was comparatively reliable, the number of guide wheel 13 was supported in minimizing that can be suitable in other words.
When being provided with a plurality of excellent source 2 in the rotating ring 1, the activity in single excellent source 2 can appropriateness reduce, because a plurality of excellent sources 2 can be scanned the detecting module in its radiation scope respectively, so the reduction of single excellent source 2 activities can not affect the correction of detector, but the shortening of sweep time can reduce the radiation damage to human body to a certain extent.
What is more important, scanning means of the present invention adopts the structure setting in how excellent source, reduced largely the correction time of detector, proofread and correct efficient thereby improve, and reduced the radiation that operator and patient are subject in the instrumental correction process, when guaranteeing image effect, improved the safety of using.Obviously, when adopting a plurality of excellent source 2 of less activity, scanning means of the present invention to fall radiation effect more obvious.
In preferred implementation illustrated in figures 1 and 2, excellent source 2 can be set to 3, and the activity in single excellent source 2 can be 1 millicurie, has significantly with respect to 5 millicuries in single excellent source in the prior art and reduces; 3 excellent sources 2 can cover the scope of whole rotating ring 1 fully, finish the scanning of detector, and less to the radiation of human body.
Please refer to Fig. 3-Fig. 6, Fig. 3 is the plan structure sketch map of scanning means shown in Figure 1; Fig. 4 is the partial cutaway schematic of a kind of set-up mode in chamber, excellent source provided by the present invention; Fig. 5 is the structural representation of impeller provided by the present invention and a kind of set-up mode of transmission component; Fig. 6 is the local enlarged diagram of a kind of set-up mode of impeller provided by the present invention.
A kind of more preferred embodiment in, one side of rotating ring 1 also is provided with chamber, excellent source 3, chamber, rod source 3 is arranged on the port of rotating ring 1, the tract 31 that chamber, rod source 3 is provided with for support stick source 2, tract 31 can arrange correspondingly with excellent source 2, also a tract 31 can only be set, when needs send rod, excellent source 2 be installed in the tract 31 one by one; Tract 31 can be the cavity type setting that can hold excellent source 2, in order to whole excellent source 2 is coated carrying; Chamber, rod source 3 also is provided with impeller 4, and impeller 4 can push excellent source 2 in the jack of rotating ring 1 from tract 31, finish and send rod motion, and the location can directly be realized by the jack on the rotating cup 1 in excellent source 2.Impeller 4 can directly be pushed to excellent source 2 in the rotating ring 1, auxiliary does not send pole member and do not need to arrange other, has not only simplified the program of sending rod, and also so that scanning means structure of the present invention is more simplified, it is convenient more flexibly to use.
For realizing the above-mentioned rod action of sending, impeller 4 can be a push rod, and the end coupling in the end of this push rod and excellent source 2 arranges; In the time of need to sending rod, apply External Force Acting on push rod, outwards promote excellent source 2 by push rod, thereby so that stretch out in tract 31 in excellent source 2, then enter in the installation position, excellent source of rotating ring 1.Obviously, the structure of impeller 4 is not limited in push rod.
Such as Fig. 4 and shown in Figure 6, a kind of comparatively preferred embodiment in, impeller 4 comprises leading screw 41 and the grip slipper 42 that is equipped with leading screw 41, leading screw 41 is along the setting that extends axially of rotating ring 1, grip slipper 42 is installed on the leading screw 41, and grip slipper 42 relative leading screws 41 circumferentially locate, so, when leading screw 41 rotated, grip slipper 42 can moving axially along leading screw 41.
The tract 31 of rod source chamber 3 is along the setting that extends axially of rotating ring 1, and the bottom of tract 31 is axially arranged with the chute 32 that the buckle for 2 ends, excellent source stretches out along it; The grip slipper 42 of this moment is in the below of tract 31, and buckle can stretch out chute 32 and snap in the bayonet socket 421 again.After grip slipper 42 fixes excellent source 2 by bayonet socket 421, leading screw 41 rotates and drives grip slipper 42 along its axially-movable, grip slipper 42 drives buckle and slides along chute 32, the buckle in rod source 2 then drives whole excellent source 2 along the axially-movable of tract 31, then tract 31 is stretched out in excellent source 2 gradually, then enters in the installation position, excellent source of rotating ring 1.
A kind of more preferred embodiment in, chamber, excellent source 3 can arrange a plurality of tracts 31, and each tract 31 can achieve a butt joint with each installation position, excellent source of rotating ring 1.Can expect, tract 31 can carry out adaptive setting with rotating ring 1, for example, in installation position, a plurality of excellent source of circumferentially arranging of rotating ring 1, each tract 31 be arranged in parallel with installation position, excellent source, and it can connect to consist of with installation position, excellent source the tracks in an excellent source 2, is convenient to excellent source 2 and moves in the installation position, excellent source in tract 31.
As shown in Figure 5 and Figure 6, when carrying out the installation in excellent source 2, tract 31 is on the same axis with the installation position, excellent source of rotating ring 1, so that impeller 4 flatly pushes excellent source 2 in the installation position, excellent source of rotating ring 1; After the installation of finishing an excellent source 2, i.e. rotatable rotating ring 1 rotates to the position corresponding with another tract 31 of chamber, excellent source 3 with another installation position, excellent source, to realize the installation in next excellent source 2.The employing said structure arranges, and can realize continuously the propelling movement location in a plurality of excellent sources 2, to simplify installation procedure, improves the automaticity that install in excellent source 2, and can carry out the specific aim operation for single excellent source 2.
On this basis, the bayonet socket 421 of clamping part 42 can also arrange and be U-shaped groove, the two side of U-shaped groove axially fixes the buckle in excellent source 2, after then excellent source 2 pushes and puts in place, when rotating ring 1 drives 2 rotation of excellent source, the buckle in rod source 2 can be automatically outwards screws out and disengaging grip slipper 42 from the both-side opening of U-shaped bayonet socket 421, and as seen, this mode utilizes the rotation of rotating ring 1 can realize separating of excellent source 2 and grip slipper 4.
Bayonet socket 421 adopts the structure setting of U-shaped groove can realize the automatic dismantling of excellent source 2 and impeller 4, and need not that special parts are set and spended time is dismantled, and its structure is more reasonable.
Obviously, grip slipper 42 can also be return initial position along leading screw 41 after the installation of finishing an excellent source 2, then carry out the propelling movement in next excellent source 2; Certainly, in the situation of space permission, can also impeller 4 be set respectively for a plurality of tracts 31.
In addition, leading screw 41 can also link to each other with motor 43, and motor 43 is used for driving leading screw 41 and rotates, and then drives grip slipper 42 along the axially-movable of leading screw 41 by leading screw 41, with excellent source 2 axially outwards pushing along tract 31.
In another preferred embodiment, scanning means of the present invention also comprises transmission component 5, and transmission component 5 is used for promoting chamber, excellent source 3 along continuous straight runs and moves; Each tract 31 levels also are intervally arranged in the same level face, when chamber, excellent source 3 moves in the horizontal direction, the tract 31 relative with the installation position, excellent source of rotating ring 1 also can change, thereby the excellent source 2 in the different tracts 31 is sent into respectively in the rotating ring 1, to improve the motility of operation.
Meanwhile, the implementation that chamber, 5 pairs of excellent sources of transmission component 3 promotes also is various: for example, transmission component 5 can be that along continuous straight runs extends the slide rail that arranges, and then chamber, excellent source 3 is arranged on this slide rail, realizes that under the driving of external force chamber 3, excellent source is along the movement of slide rail; Transmission component 5 can also be the rotating conveyer belt of along continuous straight runs, and chamber, excellent source 3 is installed on this driving-belt, just can change the horizontal level of chamber, excellent source 3 when then driving-belt turns round; Transmission component 5 can further be set to travelling gear, and the rotation of travelling gear can be converted into by gear drive the horizontal movement of chamber, excellent source 3; Transmission component 5 also can comprise turn-screw 51 and the driving motor 52 that links to each other with turn-screw 51, chamber 3, excellent source is linked to each other with turn-screw 51, and turn-screw 51 along continuous straight runs extend setting, then driving motor 52 can move along turn-screw 51 chamber 3, driving rod source, thereby realizes moving horizontally of chamber, excellent source 3.
Obviously, adopt the connected mode of above-mentioned turn-screw, be convenient to realize moving horizontally of chamber, excellent source 3, it is simple in structure, and it is also comparatively convenient to operate, and especially can improve the precision of transmission.
More than the scanning means of medical detector provided by the present invention is described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand core concept of the present invention.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. the scanning means of a medical detector, described scanning means comprises rotating ring and is arranged on the excellent source of described rotating ring internal perisporium, it is characterized in that described excellent source is at least two, and along the circumferential distribution of described rotating ring, each described excellent source is along the setting that extends axially of described rotating ring.
2. scanning means as claimed in claim 1 is characterized in that, described excellent source is circumferentially uniform along described rotating ring.
3. scanning means as claimed in claim 1 or 2 is characterized in that, the excellent source of list that described excellent source is three 1 millicuries.
4. scanning means as claimed in claim 1, it is characterized in that, described scanning means also comprises the chamber, excellent source that is arranged on described rotating ring port, and chamber, described excellent source has be used to the tract that supports described excellent source, and described excellent source is pushed impeller in the described rotating ring jack from described tract.
5. scanning means as claimed in claim 4, it is characterized in that, described tract is along the setting that extends axially of described rotating ring, described impeller comprises the leading screw that be arranged in parallel with described tract and the grip slipper that cooperates with described leading screw, and described leading screw drives described grip slipper moving axially along described leading screw when rotating; The end in described excellent source has buckle, and the bottom of described tract is axially arranged with chute along it, and described buckle stretches out described chute; Described grip slipper is provided with the bayonet socket that stretches out the described buckle of described chute for clamping, and described grip slipper can drive described buckle and slide along described chute, moves axially along described tract in order to drive described excellent source.
6. scanning means as claimed in claim 5 is characterized in that, described impeller also comprises the motor that drives described leading screw rotation.
7. such as each described scanning means of claim 4 to 6, it is characterized in that chamber, described excellent source is provided with a plurality of tracts, each described tract can dock with each jack of described rotating ring.
8. scanning means as claimed in claim 7, it is characterized in that, each described tract is parallel and be intervally arranged in the same level face, described scanning means also comprises the transmission component that moves be used to promoting chamber, described excellent source along continuous straight runs, and described transmission component comprises the turn-screw that links to each other with chamber, described excellent source and drives the driving motor that described turn-screw rotates.
9. such as each described scanning means of claim 4 to 6, it is characterized in that described scanning means also comprises the driving-belt of the outer peripheral face that is looped around described rotating ring end, described driving-belt links to each other with electric rotating machine.
10. scanning means as claimed in claim 9 is characterized in that, the end of described rotating ring also is provided with a plurality of along its circumferential equally distributed support guide wheel, and each described support guide wheel and described driving-belt are pressed together on its outer peripheral face tangently.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210514555.9A CN103006250B (en) | 2012-12-04 | 2012-12-04 | Scanning device for medical detector |
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| CN201210514555.9A CN103006250B (en) | 2012-12-04 | 2012-12-04 | Scanning device for medical detector |
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| CN103006250A true CN103006250A (en) | 2013-04-03 |
| CN103006250B CN103006250B (en) | 2015-04-29 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103479378A (en) * | 2013-09-06 | 2014-01-01 | 沈阳东软医疗系统有限公司 | PET (positron emission tomography)-CT (computed tomography) detector and rod source device thereof |
| CN104287766A (en) * | 2014-09-24 | 2015-01-21 | 江苏赛诺格兰医疗科技有限公司 | Mould body applicable to normalized correction of detectors in PET imaging system |
| CN104799879A (en) * | 2015-04-16 | 2015-07-29 | 明峰医疗系统股份有限公司 | Portable uniform correcting device for PET equipment and correcting method of portable uniform correcting device |
| CN104825185A (en) * | 2015-05-22 | 2015-08-12 | 武汉数字派特科技有限公司 | PET imaging bar source device and PET device |
| CN104840214A (en) * | 2015-03-16 | 2015-08-19 | 山西锦地裕成医疗设备有限公司 | Bar source storing, mounting and demounting device for medical detector |
| CN106344059A (en) * | 2016-09-20 | 2017-01-25 | 沈阳东软医疗系统有限公司 | Method for correcting consistency of output signals of PET (positron emission tomography) detector and system applied to method |
| CN107102012A (en) * | 2016-02-22 | 2017-08-29 | 莫福探测仪器有限责任公司 | Open cydariform frame for computed tomograph scanner system |
| CN110703311A (en) * | 2019-10-11 | 2020-01-17 | 中国计量科学研究院 | Polarized light generating device and system based on source changing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103479378A (en) * | 2013-09-06 | 2014-01-01 | 沈阳东软医疗系统有限公司 | PET (positron emission tomography)-CT (computed tomography) detector and rod source device thereof |
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| CN106344059A (en) * | 2016-09-20 | 2017-01-25 | 沈阳东软医疗系统有限公司 | Method for correcting consistency of output signals of PET (positron emission tomography) detector and system applied to method |
| CN106344059B (en) * | 2016-09-20 | 2020-01-07 | 东软医疗系统股份有限公司 | PET detector output signal consistency correction method and system |
| CN110703311A (en) * | 2019-10-11 | 2020-01-17 | 中国计量科学研究院 | Polarized light generating device and system based on source changing device |
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