CN106108929B - SPECT imaging devices - Google Patents
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- CN106108929B CN106108929B CN201610440212.0A CN201610440212A CN106108929B CN 106108929 B CN106108929 B CN 106108929B CN 201610440212 A CN201610440212 A CN 201610440212A CN 106108929 B CN106108929 B CN 106108929B
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- 238000002603 single-photon emission computed tomography Methods 0.000 title claims abstract description 48
- 238000003384 imaging method Methods 0.000 title claims abstract description 38
- 230000033001 locomotion Effects 0.000 claims abstract description 8
- 239000013078 crystal Substances 0.000 claims description 53
- 229910014323 Lanthanum(III) bromide Inorganic materials 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- XKUYOJZZLGFZTC-UHFFFAOYSA-K lanthanum(iii) bromide Chemical compound Br[La](Br)Br XKUYOJZZLGFZTC-UHFFFAOYSA-K 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 230000005622 photoelectricity Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 10
- 239000003814 drug Substances 0.000 description 7
- 239000000523 sample Substances 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 229940079593 drug Drugs 0.000 description 5
- 230000009977 dual effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000009206 nuclear medicine Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 229940121896 radiopharmaceutical Drugs 0.000 description 2
- 239000012217 radiopharmaceutical Substances 0.000 description 2
- 230000002799 radiopharmaceutical effect Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 238000002600 positron emission tomography Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/037—Emission tomography
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B6/4266—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a plurality of detector units
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- Biomedical Technology (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention discloses a kind of SPECT imaging devices, including：It is scanning bed；At least two groups flat panel detector group, at least two groups flat panel detector group is along the long axial alignment of the object to be imaged, wherein, every group of flat panel detector group has at least three flat panel detectors at least two groups flat panel detector group, at least three flat panel detectors surround the object to be imaged on circumferential direction, and the plane normal of at least one flat panel detector and the direction of the plane normal of any one flat panel detector in remaining flat panel detector are not parallel at least three flat panel detectors, with data needed for at least two groups flat panel detector group acquisition cross sectional reconstruction within the continuous time of no relative motion；Image-forming module, for obtaining SPECT images according to data needed for cross sectional reconstruction.The SPECT imaging devices can complete cross sectional reconstruction under the premise of without making detector or the scanning bed opposite object to be imaged be moved, simple easily to realize to obtain SPECT images.
Description
Technical field
The present invention relates to medicine imaging technique field, more particularly to a kind of SPECT imaging devices.
Background technology
Nuclear medicine is a kind of modern medicine image technology.Its using can generate the nucleic of gamma photons or electronics with
Human body is introduced after pharmaceutical synthesis, and distribution and change information of the drug in human body are known by detected ray out of the human body, and
Diagnosis, treatment for disease.Nuclear medicine is typical molecular image means, can reflect physiology in human body, metabolism,
Function, molecular information are one of current main-stream medical image means.
Nuclear medicine includes mainly single photon emission tomographic imaging (SPECT) and positron emission tomography (PET)
Two kinds of technologies.Wherein, SPECT technologies are obtained mainly using the nucleic of transmitting gamma photons using position sensitive gamma detectors
Photon is taken to be incident to the location information on detector；And collimator is placed between detector and human body, only allow some specific
The photon in direction is incident on detector and absorbs the photon in other directions, it is hereby achieved that photon is emitted from human body
Routing information.Current commercial SPECT machines surround the flat panel detector of human body with dual probe system, by two, and be allowed to around
The rack of human motion, and the scanning bed composition that supports and the object to be imaged is made to be moved in system.Also have single detector SPECT,
The system structures such as three detector SPECTs.
In order to obtain the image that drug is distributed in human body, need in one week range of human body, acquisition is from difference
The photonic data in direction obtains SPECT images so as to application image cross sectional reconstruction algorithmic technique.Therefore, existing SPECT systems
System needs to be related to movement of the detector relative to human body in imaging time, meets figure to obtain the data in enough multi-angles
As the requirement of cross sectional reconstruction.Single probe and dual probe system need to make probe around human body rotating so that covering enough angle models
It encloses；Three probe systems still need to carry out multiple rotary to obtain enough sampling angles although complete angular range can be covered
Data on number of degrees mesh are for rebuilding.This makes in a gatherer process, needs that the difference of different probe positions will be corresponded to
The gathered data of period is combined, and rational tomographic reconstruction images can be obtained.
Other than needing to observe static distribution of the drug in human body on a period of time, after observing drug self seeding human body,
Different tissues and it is intraorganic transport, exchange and discharge process, be equally of great significance on clinic diagnosis.But if adopting
Data deficiencies during collection in each period obtains image to complete cross sectional reconstruction, and above-mentioned dynamic imaging then cannot achieve.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.
For this purpose, it is an object of the invention to propose that a kind of SPECT imaging devices, the device can complete cross sectional reconstruction, and
It is simple easily to realize.
In order to achieve the above objectives, the embodiment of the present invention proposes a kind of SPECT imaging devices, including：It is scanning bed；At least two
Group flat panel detector group, at least two groups flat panel detector group is along the long axial alignment of the object to be imaged, wherein it is described at least
Every group of flat panel detector group has at least three flat panel detectors, at least three tablets detection in two groups of flat panel detector groups
Device surrounds the object to be imaged, and at least one flat panel detector at least three flat panel detector on circumferential direction
Plane normal and remaining flat panel detector in any one flat panel detector plane normal direction it is not parallel, in no phase
To data needed at least two groups flat panel detector group acquisition cross sectional reconstruction in the continuous time of movement；Image-forming module is used for basis
Data needed for the cross sectional reconstruction obtain SPECT images.
The SPECT imaging devices of the embodiment of the present invention, by the way that multigroup flat panel detector group is axially arranged in the object to be imaged,
By the way that the normal angles of different groups of flat panel detectors are arranged, so as to so that focal area is observed by multigroup flat panel detector group
It arrives, make the complete angular range in collected data cover focal area and obtains the sampling angle data of enough numbers, to
Cross sectional reconstruction required data are obtained under the premise of detector or scanning bed nothing are moved with respect to the object to be imaged and are obtained
SPECT images, so that SPECT dynamic imagings may be implemented.
In addition, SPECT imaging devices according to the above embodiment of the present invention can also have following additional technical characteristic：
Further, in one embodiment of the invention, flat panel detector includes：Position sensitive gamma detecting modules,
For measuring the gamma photon location informations for hitting the flat panel detector；Gamma collimators, the gamma collimators setting
Between the object to be imaged and the position sensitive gamma detecting modules, the side for constraining incident gamma rays
To.
Further, in one embodiment of the invention, the position sensitive gamma detecting modules include：Flicker is brilliant
Body, the gamma rays for receiving the incidence from preset direction by the gamma collimators, to generate scintillation photons；Light
Electrical part, for receiving the scintillation photons to export electric signal according to the scintillation photons, to obtain the gamma rays
Location information, to obtain data needed for the cross sectional reconstruction.
Optionally, in one embodiment of the invention, the scintillation crystal can be flickered by LYSO scintillation crystals, LSO
Crystal, BGO scintillation crystals, LaBr3 scintillation crystals, YAP scintillation crystals, LYAP scintillation crystals, NaI scintillation crystals, CsI flickers are brilliant
One or more of body forms.
Optionally, in one embodiment of the invention, the scintillation crystal can be the continuous crystal of monoblock or crystal battle array
Row.
Optionally, in one embodiment of the invention, the photoelectric device can be photomultiplier, avalanche-type photoelectricity
One or more of diode or silicon photomultiplier.
Optionally, in one embodiment of the invention, the gamma collimators can be parallel aperture collimator, sector
Collimator, pinhole collimator or seam-slot collimator.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partly become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the structural schematic diagram of dual detectors device in the related technology；
Fig. 2 is the sectional schematic diagram along A-A sections in the related technology；
Fig. 3 is the structural schematic diagram according to the SPECT imaging devices of one embodiment of the invention；
Fig. 4 is the sectional schematic diagram along A-A sections according to one embodiment of the invention；
Fig. 5 is the sectional schematic diagram along B-B sections according to one embodiment of the invention；
Fig. 6 is the sectional schematic diagram along C-C sections according to one embodiment of the invention；And
Fig. 7 is the structural schematic diagram according to the flat panel detector of one embodiment of the invention.
Reference numeral：
10-gamma rays, the 11- object to be imaged, 12- be scanning bed, 20- flat panel detectors group, 21- flat panel detectors,
31-gamma collimators, 32- scintillation crystals, 33- photoelectric devices.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below before the SPECT imaging devices that description proposes according to embodiments of the present invention, phase is briefly described first
Imaging device in the technology of pass.
In conjunction with shown in Fig. 1 and Fig. 2, Fig. 1 is the structural schematic diagram of dual detectors device in the related technology, Fig. 2 Fig. 1
Along the sectional schematic diagram of A-A sections, wherein dotted arrow indicates that two flat panel detectors can be revolved along the object to be imaged
Turn, to obtain data on multiple sampling angles.The device includes two flat panel detectors 21, can be around dotted line shown in Fig. 2
Arrow is rotated, and makes that flat panel detector 21 rotate required machinery rotation and support device is not shown.The dress
Setting makes the object to be imaged 11 (such as human body) be positioned on scanning bed 12, and gamma radiation will be marked with by the modes such as injecting, taking orally
Property nucleic radiopharmaceutical introduce human body in.Radiopharmaceutical is released a large amount of gamma and is penetrated in all directions whithin a period of time
Line is recorded by a pair of plates detector 21, and by a pair of plates detector 21 around the movement of the object to be imaged 11, more
The gamma ray datas of different directions are obtained on a sampling angle, and SPECT images are obtained by cross sectional reconstruction algorithm.But
There are certain defects for dual detectors device in the related technology, have much room for improvement.
Formally based on the above issues, a kind of SPECT imaging devices are proposed.
The SPECT imaging devices proposed according to embodiments of the present invention are described with reference to the accompanying drawings.
Fig. 3 is the structural schematic diagram of the SPECT imaging devices of one embodiment of the invention.
As shown in figure 3, the SPECT imaging devices include：Scanning bed 12, at least two groups flat panel detector group (such as visit by tablet
Survey shown in device group 20) and image-forming module (not being specifically identified in figure).
Wherein, at least two groups flat panel detector group, at least two groups flat panel detector group grow axial row along the object to be imaged
Row, wherein every group of flat panel detector group has at least three flat panel detectors at least two groups flat panel detector group, and at least three
Flat panel detector surrounds the object to be imaged 11, and at least one tablet detection at least three flat panel detectors on circumferential direction
The plane normal of device and the direction of the plane normal of any one flat panel detector in remaining flat panel detector are not parallel, in nothing
Data needed at least two groups flat panel detector group acquisition cross sectional reconstruction in the continuous time of relative motion.Image-forming module is used for basis
Data needed for cross sectional reconstruction obtain SPECT images.The imaging device of the embodiment of the present invention can be without making detector or scanning
The opposite object to be imaged of bed completes cross sectional reconstruction under the premise of being moved, simple easily to realize to obtain SPECT images.
Specifically, the SPECT imaging devices of the embodiment of the present invention include along at least the two of the long axial alignment of the object to be imaged
, at least there is one group of flat panel detector group in group flat panel detector group, wherein at least there is a flat panel detector, and detector is flat
Face normal direction and any one flat panel detector normal direction in other detector groups are not parallel, in flat panel detector group
At least one of include at least 3 flat panel detectors and surrounding the object to be imaged along object to be imaged body surface, in data
In gatherer process, at least there is one section of continuous time, without making detector or the scanning bed opposite object to be imaged be moved
Under the premise of, the data that are acquired can be individually used for completing cross sectional reconstruction obtaining SPECT images, without with adopted in other times
The data combination of collection could complete cross sectional reconstruction and obtain SPECT images.Wherein, within continuous time, flat panel detector is scanning bed
Without relative motion between the object to be imaged, within continuous time, at least two detector groups can receive imaging target area
The gamma photons that domain is sent out, and then can need not be transported the object to be imaged 11 relatively using in detector or scanning bed 12
In dynamic a period of time gathered data and complete SPECT imaging
Wherein, in one embodiment of the invention, flat panel detector 21 includes：Position sensitive gamma detecting modules (figure
In be not specifically identified) and gamma collimators 31.Wherein, position sensitive gamma detecting modules hit flat panel detector for measuring
Gamma photon location informations.Gamma collimators 31 be set to the object to be imaged 11 and position sensitive gamma detecting modules it
Between, gamma collimators 31 are used to constrain the direction of incident gamma rays.
Further, in one embodiment of the invention, position sensitive gamma detecting modules include：Scintillation crystal 32
With photoelectric device 33.Wherein, scintillation crystal 32 is used to receive incident gamma rays from preset direction by gamma collimators,
To generate scintillation photons.Photoelectric device 32 is for receiving scintillation photons to export electric signal according to scintillation photons, to obtain
The location information of gamma rays, to obtain data needed for cross sectional reconstruction.
It is understood that at least one of flat panel detector includes that can measure the gamma for hitting flat panel detector
The position sensitive gamma detecting modules of photon location information, and it is located at position sensitive gamma detecting modules and the object to be imaged 11
Between gamma collimators 31.Wherein, position sensitive gamma detecting modules are at least by scintillation crystal 32 and photoelectric detector
33 compositions.
Optionally, in one embodiment of the invention, scintillation crystal 32 can be flickered brilliant by LYSO scintillation crystals, LSO
Body, BGO scintillation crystals, LaBr3 scintillation crystals, YAP scintillation crystals, LYAP scintillation crystals, NaI scintillation crystals, CsI scintillation crystals
One or more of composition.
In addition, in one embodiment of the invention, scintillation crystal can be the continuous crystal of monoblock or crystal array.
Optionally, in one embodiment of the invention, photoelectric device 33 can be photomultiplier, avalanche-type photoelectricity two
One or more of pole pipe or silicon photomultiplier.
Optionally, in one embodiment of the invention, gamma collimators 31 can be parallel aperture collimator, fan-shaped standard
Straight device, pinhole collimator or seam-slot collimator.
Specifically, as shown in figure 3, the SPECT devices of the embodiment of the present invention may include along object to be imaged long axis side
To 3 groups of detector groups 20 of arrangement.As shown in Figures 4 to 6 be its 3 groups of detector groups along its axial centre plan cross-sectional direction
Structural schematic diagram.Every group of detector group 20 can be made of 4 flat panel detectors 21 and surround the object to be imaged.In this example reality
It applies in mode, angle not phase of 21 normal of flat panel detector in different detector groups 20 relative to object to be imaged long axis
Together so that 3 groups of detector groups 20 can receive the gamma photons that imageable target region is sent out.
Further, in one embodiment of the invention, as shown in Figures 4 to 6,3 groups of flat panel detector groups 20, institute
Including totally 12 flat panel detectors 21, the normal direction of any two of which flat panel detector 21 is in object to be imaged cross section
On projection components be all different so that each flat panel detector can obtain gamma number of photons from different sampling angles
According to.
Further, as shown in fig. 7, flat panel detector 21 by gamma collimators 31, by scintillation crystal 32 and photoelectric device
The position sensitive gamma detecting modules composition of 33 compositions.
Wherein, gamma collimators 31 are used to constrain the direction for the gamma rays for being incident to scintillation crystal 32, only allow edge
The gamma rays of specific direction reach scintillation crystal.Gamma collimators 31 can be parallel aperture collimator, fan-shaped collimator, needle
Hole collimator or seam-slot collimator.
Further, scintillation crystal 32 is used to receive incident gamma rays, and generates a large amount of scintillation photons.Flicker is brilliant
Body 32 can be the continuous crystal of a monoblock or one group of crystal array, material can be LYSO scintillation crystals, LSO scintillation crystals,
In BGO scintillation crystals, LaBr3 scintillation crystals, YAP scintillation crystals, LYAP scintillation crystals, NaI scintillation crystals, CsI scintillation crystals
One or more.
Further, photoelectric device 33 is used to receive the scintillation photons of the generation of scintillation crystal 32, and exports reflection passage of scintillation light
Subnumber purpose electric signal, and according to the scintillation photons number distribution on multiple photoelectric devices 33, pass through subsequent location logic electricity
Road (being not shown) calculates the location information of incident gamma rays.Photoelectric device 33 can be photomultiplier, snowslide
One or more of type photodiode or silicon photomultiplier.
In addition, imaging device such as computer can collect the whole gamma photons location informations detected in gatherer process,
And by cross sectional reconstruction algorithm, the spatial image that drug is distributed in the object to be imaged is calculated.
In an embodiment of the present invention, multiple the quilt from not same angle can be received by being arranged around patient
The flat panel detector of the gamma photons of imaging object target area, can detector and it is scanning bed need not opposite patient
SPECT imagings are completed under the premise of being moved, to achieve the purpose that SPECT dynamic imagings.
SPECT imaging devices according to the ... of the embodiment of the present invention are detected by the way that multigroup tablet is axially arranged in the object to be imaged
Device group, by be arranged different groups of flat panel detectors normal angles, so as to so that focal area by multigroup flat panel detector group
It observes, make the complete angular range in collected data cover focal area and obtains the sampling angle data of enough numbers,
To obtain cross sectional reconstruction required data under the premise of detector or scanning bed nothing are moved with respect to the object to be imaged and obtain
SPECT images are obtained, so that SPECT dynamic imagings may be implemented.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (7)
1. a kind of SPECT imaging devices, which is characterized in that including：
It is scanning bed；
At least two groups flat panel detector group, at least two groups flat panel detector group along the long axial alignment of the object to be imaged,
In, every group of flat panel detector group has at least three flat panel detectors in at least two groups flat panel detector group, it is described at least
Three flat panel detectors surround the object to be imaged on circumferential direction, and at least one at least three flat panel detector
The direction of the plane normal of a flat panel detector and the plane normal of any one flat panel detector in remaining flat panel detector group
It is not parallel, with data needed for at least two groups flat panel detector group acquisition cross sectional reconstruction within the continuous time of no relative motion；With
And
Image-forming module, for obtaining SPECT images according to data needed for the cross sectional reconstruction.
2. SPECT imaging devices according to claim 1, which is characterized in that flat panel detector includes：
Position sensitive gamma detecting modules, for measuring the gamma photon location informations for hitting the flat panel detector；
Gamma collimators, the gamma collimators are set to the object to be imaged and detect mould with the position sensitive gamma
Between block, the direction for constraining incident gamma rays.
3. SPECT imaging devices according to claim 2, which is characterized in that the position sensitive gamma detecting module packets
It includes：
Scintillation crystal, the gamma rays for receiving the incidence from preset direction by the gamma collimators, to generate
Scintillation photons；
Photoelectric device, for receiving the scintillation photons to export electric signal according to the scintillation photons, described in obtaining
The location information of gamma rays, to obtain data needed for the cross sectional reconstruction.
4. SPECT imaging devices according to claim 3, which is characterized in that the scintillation crystal by LYSO scintillation crystals,
LSO scintillation crystals, BGO scintillation crystals, LaBr3 scintillation crystals, YAP scintillation crystals, LYAP scintillation crystals, NaI scintillation crystals,
One or more of CsI scintillation crystals form.
5. SPECT imaging devices according to claim 4, which is characterized in that the scintillation crystal is the continuous crystal of monoblock
Or crystal array.
6. SPECT imaging devices according to claim 3, which is characterized in that the photoelectric device is avalanche-type photoelectricity two
One or more of pole pipe or silicon photomultiplier.
7. SPECT imaging devices according to claim 2, which is characterized in that the gamma collimators are parallel bore collimation
Device, fan-shaped collimator, pinhole collimator or seam-slot collimator.
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| CN109507713A (en) * | 2018-11-09 | 2019-03-22 | 清华大学 | Handheld gamma radiation imaging apparatus and method |
| CN110604589A (en) * | 2019-08-27 | 2019-12-24 | 上海鹏钼医疗科技有限公司 | PET detection equipment |
| CN110632639A (en) * | 2019-09-18 | 2019-12-31 | 北京格物时代科技发展有限公司 | Probe, detector and total counting correction method of multi-pixel photon counter |
| CN113558648A (en) * | 2021-07-22 | 2021-10-29 | 湖北锐世数字医学影像科技有限公司 | Positron emission computed tomography device and method |
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| CN102362198A (en) * | 2009-03-25 | 2012-02-22 | 株式会社岛津制作所 | Radiation tomography device |
| CN104856716A (en) * | 2014-02-24 | 2015-08-26 | 苏州瑞派宁科技有限公司 | Panel PET imaging device and method special for local and radiotherapy |
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2016
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| EP0412734A2 (en) * | 1989-08-04 | 1991-02-13 | Kabushiki Kaisha Toshiba | Single photon emission CT apparatus |
| EP1136844A1 (en) * | 2000-03-20 | 2001-09-26 | Marconi Medical Systems, Inc. | Gamma camera |
| CN102362198A (en) * | 2009-03-25 | 2012-02-22 | 株式会社岛津制作所 | Radiation tomography device |
| CN104856716A (en) * | 2014-02-24 | 2015-08-26 | 苏州瑞派宁科技有限公司 | Panel PET imaging device and method special for local and radiotherapy |
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