CN109444182A - A kind of scintillation crystal test device - Google Patents
A kind of scintillation crystal test device Download PDFInfo
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- CN109444182A CN109444182A CN201811575889.0A CN201811575889A CN109444182A CN 109444182 A CN109444182 A CN 109444182A CN 201811575889 A CN201811575889 A CN 201811575889A CN 109444182 A CN109444182 A CN 109444182A
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
Abstract
A kind of scintillation crystal test device, including propulsive element, loading part, coupling unit and exploring block, the driver that propulsive element has push rod and connect with push rod；Loading part includes loading main body and crystal test cell, and crystal test cell, which is set to, to be loaded in main body；Coupling unit is cylindrical in shape, and the first coupling form is provided on coupling unit, and loading part is set to inside coupling unit, and propulsive element is fixed on one end of coupling unit, and push rod, which contradicts, loads main body；Exploring block includes electrooptical device and the electronics read-out device connecting with electrooptical device, exploring block is set to the other end of coupling unit, it is provided on exploring block and couples the matched second coupling form of form with first, the scintillation crystal in crystal test cell is coupled with electrooptical device.The configuration of the present invention is simple, easy to operate, compact, use easy to carry.
Description
Technical field
The present invention relates to a kind of material properties test equipment, relate more specifically to a kind of scintillation crystal test device.
Background technique
When the effect by high energy particles such as gamma-rays, X-ray or atomic nucleus, scintillation crystal can generate flashing arteries and veins
Punching, converts lower energy photon for the high-energy photon in these high energy particles, thus the further light by coupling with scintillation crystal
Scintillation pulse is converted to electric signal by power conversion device.Scintillation crystal is in radiation detection technology, especially in positron emission
It is used widely in tomography technology (Positron Emission Tomography, hereinafter referred to as PET).Scintillation crystal
As the component of activity-sensing equipment front end, the overall performance of activity-sensing equipment is directly influenced.Therefore, as radiation is visited
The development of survey technology has gradually derived the dedicated test equipment of various scintillation crystals.With digitized sampling technology and number
Change gradualling mature for PET device, quantity, the scale of the scintillation crystal used are also increasing, and ten hundreds of scintillation crystals
It is required to guarantee stable, reliable performance, this is a kind of challenge for existing scintillation crystal test equipment.
Scintillation crystal test device in the prior art by by the sequentially rotation of the scintillation crystal in crystal load units with
Electrooptical device coupling can automatically control the switching of test scintillation crystal and the stepping coupling of electrooptical device, thus
Artificial replacement scintillation crystal and the by hand influence of the unstable factors such as coupling can be got rid of, more stable test is capable of providing
As a result, gradually having started the ability with automatic test, high-volume, the test of efficient crystal can be carried out.
However, measurement while in order to realize polycrystal, often volume is huge for scintillation crystal test device in the prior art
Greatly, structure is complicated, and component is more, thus is only applicable to fixed test.And in actual application, since digitlization PET is set
Standby popularizes, and the maintenance and maintenance for this large scale equipment also become more and more important, to crystal test device
Demand starts to turn to portable direction movement from large batch of automatic test.When needs are to the detector of digitlization PET device
It is a set of to be convenient for carrying and scintillation crystal test equipment that practicability is high can effectively solve the problem that mitigation when being overhauled and being safeguarded
The burden of maintenance personal provides reliability higher after-sales service service.
Further, since scintillation crystal test device in the prior art is conceived to changing for scintillation crystal fixation member mostly
Into, and have ignored the improvement in the coupled structure of scintillation crystal and electrooptical device.And portable crystal is tested and is filled
For setting, efficient and stable coupled modes are very important one aspect.Therefore, it is necessary to provide a kind of portable and can
Guarantee the scintillation crystal test device of efficient coupling.
Summary of the invention
The object of the present invention is to provide a kind of scintillation crystal test devices, test to solve scintillation crystal in the prior art
Device not Portable belt and cannot be guaranteed coupling effect the problem of.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a kind of scintillation crystal test device, the sudden strains of a muscle
Bright crystal test device includes propulsive element, loading part, coupling unit and exploring block, and the propulsive element has push rod
The driver being connect with the push rod；The loading part includes loading main body and crystal test cell, the crystal test
Unit is set in the loading main body；The coupling unit is cylindrical in shape, and the first coupling form is provided on the coupling unit,
The loading part is set to inside the coupling unit, and the propulsive element is fixed on one end of the coupling unit, described
Push rod contradicts the loading main body；The exploring block includes electrooptical device and connect with the electrooptical device
Electronics read-out device, the exploring block are set to the other end of the coupling unit, be provided on the exploring block with
The first coupling form matched second couples form, scintillation crystal and the photoelectric conversion in the crystal test cell
Device coupling.
According to one embodiment of present invention, one end of the coupling unit is formed with screw thread, and the propulsive element is in interior
Threaded cover shape is arranged in side, and the propulsive element is fixed with the coupling unit by screw thread couple.
According to one embodiment of present invention, the push rod is set to the center of the propulsive element, and the one of the push rod
End is connect with the driver, and the other end of the push rod is formed with promotion part.
According to one embodiment of present invention, the driver is knob, is provided with and the knob on the push rod
The screw thread matched.
According to one embodiment of present invention, the plane where promotion part is described perpendicular to the axis where the push rod
Promotion part is formed as crux, circular plate type, triangle, polygon or irregular shape.
According to one embodiment of present invention, the first buffer unit, first buffering are provided in the loading main body
Device is set to simultaneously on the outside of the crystal test cell.
According to one embodiment of present invention, first buffer unit includes that more first springs and one first are flat
Platform, first spring are arranged around the crystal test cell, and one end of first spring is set to the loading main body
On, the other end of first spring is connect with first platform, is provided on first platform and is tested with the crystal
Matched first aperture of the size of unit.
According to one embodiment of present invention, described to load side setting opposite with the crystal test cell in main body
Penetrate source.
According to one embodiment of present invention, multiple sliding blocks, the coupling unit inner wall are provided in the loading main body
On be provided with multiple guide-track grooves with sliding block cooperation, the sliding block is placed in the guide-track groove.
According to one embodiment of present invention, the sliding block is set on the side for loading main body, the sliding block
Extending direction is parallel with the length direction of the scintillation crystal.
According to one embodiment of present invention, the crystal test cell has crystal set, and it is more that the crystal puts on setting
A shrinkage pool, the scintillation crystal are installed in the shrinkage pool.
According to one embodiment of present invention, several docking cards are provided on the outer wall of the other end of institute's coupling unit
Head is provided with several and the docking card slot for docking clamp cooperation on the inner wall of the exploring block.
According to one embodiment of present invention, it is provided with the second buffer unit on the electronics read-out device, described
Two buffer units are set to simultaneously on the outside of the electrooptical device.
According to one embodiment of present invention, second buffer unit includes that more second springs and one second are flat
Platform, the second spring are arranged around the electrooptical device, and one end of the second spring is set to the electronics and reads
Out on device, the other end of the second spring is connect with second platform, is provided on second platform and the light
Matched second aperture of the size of power conversion device.
According to one embodiment of present invention, be provided with display screen on the outer wall of the exploring block, the display screen with
The electronics read-out device connection.
According to one embodiment of present invention, be provided with key on the outer wall of the exploring block, the key with it is described
The connection of electronics read-out device.
According to one embodiment of present invention, the fixation being arranged symmetrically is provided on the outer wall of the electronics read-out device
Block, the fixed block are connect by third spring with the outer wall of the electronics read-out device.
According to one embodiment of present invention, the propulsive element, the coupling unit and the exploring block is outer
Side is provided with anti-ionising radiation shell.
Scintillation crystal test device provided by the invention, using the step by step structure of tubular docking structure and spiral rotating,
So that the structure of the device is simple, it is easy to operate；Meanwhile the device volume is small and exquisite, machined material is lighter, and portability is high；
In addition, the device provides a dark condition, tubular structure pair using inscribed tubular structure for the test of scintillation crystal
The cavity connect increases the stability of scintillation crystal and electrooptical device coupling, and test result reliability is high, while in equipment
In be integrated with preliminary test result display function, can be used for detection, the maintenance service of large-scale digital PET device.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in invention, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the perspective view of the explosion of scintillation crystal test device according to an embodiment of the invention；
Fig. 2 is that propulsive element, loading part is shown according to the stereoscopic schematic diagram of the scintillation crystal test device of Fig. 1
The installation relation of part, coupling unit and exploring block；
Fig. 3 is the stereoscopic schematic diagram according to the propulsive element of the scintillation crystal test device of Fig. 1；
Fig. 4 is the stereoscopic schematic diagram according to the loading part of the scintillation crystal test device of Fig. 1；
Fig. 5 is the stereoscopic schematic diagram according to the coupling unit of the scintillation crystal test device of Fig. 1；
Fig. 6 is the stereoscopic schematic diagram according to the exploring block of the scintillation crystal test device of Fig. 1；
Fig. 7 is the stereoscopic schematic diagram according to the photoelectric detection unit of the exploring block of the scintillation crystal test device of Fig. 5；
Fig. 8 is the diagrammatic cross-section of scintillation crystal test device according to fig. 2；
Fig. 9 is the stereoscopic schematic diagram of the partial sectional of scintillation crystal test device according to fig. 2；
Figure 10 is signal reading and the transmission circuit of scintillation crystal test device according to an embodiment of the invention
Schematic diagram.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be further described.It should be understood that following embodiment is merely to illustrate this
The range of invention and is not intended to limit the present invention.
It should be noted that it can directly set when component/part is referred to as on " setting exists " another component/part
It sets on another component/part or there may also be component/parts placed in the middle.When component/part is referred to as " connection/connection
Connect " to another component/part, it, which can be, is directly connected to/is attached to another component/part or may be simultaneously present residence
Middle component/part.Term as used herein " connection/connection " may include electrical and/or mechanical-physical connection/connection.This
Term "comprises/comprising" used in text refers to feature, step or the presence of component/part, but is not precluded one or more
Other feature, step or the presence of component/part or addition.Term as used herein "and/or" includes one or more phases
Close any and all combinations of listed item.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.Term used herein is intended merely to the purpose of description specific embodiment, and
It is not intended to limitation the application.
In addition, term " first ", " second " etc. are used for description purposes only pair similar with distinguishing in the description of the present application
As between the two and sequencing being not present, indication or suggestion relative importance can not be interpreted as.In addition, the application's
In description, unless otherwise indicated, the meaning of " plurality " is two or more.
Fig. 1 is the perspective view of the explosion of scintillation crystal test device according to an embodiment of the invention, and Fig. 2 is according to figure
The stereoscopic schematic diagram of 1 scintillation crystal test device, by Fig. 1 combination Fig. 2 it is found that scintillation crystal test device provided by the invention
It include: propulsive element 10, loading part 20, coupling unit 30 and exploring block 40, wherein be provided with push rod on propulsive element 10
And the promotion part 15 being connected with push rod, loading in loading part 20 needs scintillation crystal to be tested, and coupling unit 30 has
First coupling unit 31 and the second coupling unit 32, loading part 20 are placed in coupling unit 30, propulsive element 10 and first
Coupling unit 31 coupling so that promotion part 15 can under the action of driver 16 propelling loading component 20 in coupling unit
30 internal motions, exploring block 40 are coupled with the second coupling unit 32 to match the testing requirement of the scintillation crystal of different length.
More specifically, Fig. 3 is according to the stereoscopic schematic diagram of the propulsive element 10 of the scintillation crystal test device of Fig. 1, by Fig. 3
It is found that propulsive element 10 includes lid 12, push rod 14, promotion part 15 and driver 16, the main body of lid 12 is formed as cylinder
Shape is provided with screw thread on the inner wall of lid 12, and the first space 13, the extending direction and lid 12 of push rod 14 are formed inside lid 12
Central axial direction be overlapped, one end of push rod 14 from the first space 13 across lid 12 center and be fixed on lid 12
On, the other end of push rod 14 is provided with the promotion part 15 of cross form, and driver 16 connect with one end of push rod 14 and is to push away
Bar 14 provides power, and 12 inside bottom of lid is provided with washer 11 so that sealing uses.In the fig. 3 embodiment, driver 16
Specific implementation form be knob, which matches the movement to realize push rod 14 with the screw thread being set on push rod 14.
Fig. 4 as shown in Figure 4, is loaded according to the stereoscopic schematic diagram of the loading part 20 of the scintillation crystal test device of Fig. 1
Component 20 includes loading main body 21, sliding block 25, the first spring 28 and the first platform 26, wherein loads main body 21 and substantially forms
For rectangular shape, loads and be provided with recessed portion 22 on one of surface of main body 21, the recessed portion 22 is for loading crystal
Test cell 23 inlays several scintillation crystal items in crystal test cell 23.The shape and crystal test cell of recessed portion 22
23 shape matching, it is not limited here.Load another face opposite with recessed portion 22 of main body 21 or near zone setting
Penetrate source 24.It loads and is respectively arranged with sliding block 25 on four ribs that main body 21 is parallel to each other, sliding block 25 is formed as to far from loading
The column of the direction protrusion of main body 21, the central axis of stupefied extending direction and scintillation crystal item and lid 12 where sliding block 25
The extending direction of line is parallel.Several first springs 28 are arranged along the direction of the centerline axis parallel with lid 12, the first bullet
One end of spring 28 is fixed on loading main body 21 and is provided on the surface of recessed portion 22, the other end and the first platform of the first spring 28
26 is fixed.Plate with the first aperture 27 centered on first platform 26 is formed, the shapes and sizes and crystal of the first aperture 27
The shapes and sizes of test cell 23 match.
Further, in the fig. 4 embodiment, crystal test cell 23 includes crystal set in a rectangular parallelepiped shape, crystal set
It is set in recessed portion 22.Crystal set can be made of elastomer (such as sponge), can be by certain rule (ratio in crystal set
As matrix is distributed) more scintillation crystal items to be tested are inlayed, for example, each crystal, which is put on, inlays 5 × 5 scintillation crystal items.
Those skilled in the art should be noted that the quantity of crystal set and scintillation crystal item only as an example, not a limit, practical
In, the quantity of crystal set and scintillation crystal item can be according to requiring to be adjusted, and details are not described herein.Art technology
Personnel should also be noted that crystal set can be directly fixedly installed on and load in main body 21 without solid by recessed portion 22
Fixed, details are not described herein.
Fig. 5 as shown in Figure 5, is coupled according to the stereoscopic schematic diagram of the coupling unit 30 of the scintillation crystal test device of Fig. 1
The main body of component 30 is formed to have the cylinder of front end 31 and rear end 32.It is provided on front end 31 and matches with the inner wall of lid 12
Screw thread.It is provided with several docking clamps 36 on rear end 32, docks and is spaced on excircle of the clamp 36 along coupling unit 30
Distribution, the docking clamp 36 on same circumference are circumferentially uniformly distributed, the docking clamp 36 on different circumference correspond to each other and
With different grades of spacing, it is identical or not identical which, which can be set as needed,.First is additionally provided on rear end 32
Form 37 is coupled, the first coupling form 37 is formed as rectangle and penetrates from the outer wall inward wall of coupling unit 30, the first coupling
The length direction of form 37 and the direction of cylinder axis are parallel.Convex section 33, convex section are provided between front end 31 and rear end 32
33 are again formed as cylindrical shape；It is formed with multiple guide-track grooves 35 on the cylindric inner wall 34 of coupling unit 30, guide-track groove 35 is from front end
31 start along the direction parallel with cylinder axis 32 extension to the back-end, shape, quantity and the distribution of guide-track groove 35 and sliding block 25
Shape, quantity and distribution match, allow sliding block 25 is corresponding to be caught in guide-track groove 35 and move along guide-track groove 35.
Fig. 6 is according to the stereoscopic schematic diagram of the exploring block 40 of the scintillation crystal test device of Fig. 1, it will be appreciated from fig. 6 that detection
Component 40 includes probe portion main body 41, the docking coupling of card slot 43, second form 44, display screen 45 and key 46, wherein detection
Portion's main body 41 is formed as cylindric, and multiple docking card slots 43 are formed on the inner wall 42 of probe portion main body 41, docking card slot 43
Shape, quantity and distribution and the shape, quantity and distribution distribution matching for docking clamp 36, it may be assumed that docking card slot 43 is along probe portion
The circumferentially spaced about distribution of the inner wall of main body 41, the docking card slot 43 on same circumference is circumferentially uniformly distributed, on different circumference
Docking card slot 43 correspond to each other and there is different grades of spacing, which can be set as needed as identical or not phase
Together.Second coupling form 44 is set on the outer wall of probe portion main body 41, and the second coupling form 44 is formed as rectangle and visits certainly
The outer wall inward wall of survey portion main body 41 penetrates, and the second coupling form 44 couples form 37 with first and matches.Display screen 45 is embedded in
On the outer wall of probe portion main body 41, display screen 45 is formed as rectangle, display screen 45 and is set to inside probe portion main body 41
Master controller is connected to show test result.Key 46 is set on the outer wall of probe portion main body 46 and connects with master controller
It connects to control the parameter of test.
Fig. 7 be according to the stereoscopic schematic diagram of the photoelectric detection unit of the exploring block 40 of the scintillation crystal test device of Fig. 5,
As shown in Figure 7, exploring block 40 further includes photoelectric detection unit 50, and photoelectric detection unit 50 includes electrooptical device 52, electricity
Son learns read-out device 51 and fixed block 56, wherein electrooptical device 52 is fixedly connected with electronics read-out device 51, photoelectricity
Switching device 52 includes the electrooptical devices such as photomultiplier tube, silicon photomultiplier, and electronics read-out device 51 is close to photoelectricity
One end of switching device 52 is provided with the second platform 53, and the second platform 53 is fixed by several second springs 55, second spring
55 one end is fixed on the surface of electronics read-out device 51, and the other end of second spring 55 and the second platform 53 are fixed, the
Plate with the second aperture 54 centered on two platforms 53 are formed, the shapes and sizes and electrooptical device 52 of the second aperture 54
Shapes and sizes matching so that electrooptical device 52 is placed in the sky that the second platform 53 and second spring 55 are formed
In.Fixed block 56 is symmetrically set to the side of electronics read-out device 51 by third spring 57, so that photoelectricity is visited
When survey unit 50 is installed into 40 inside of exploring block, pass through the cooperation of 40 inner wall of fixed block 56, third spring and exploring block
Photoelectric detection unit 50 is closely fixed on inside exploring block 40.
Fig. 8 is the diagrammatic cross-section of scintillation crystal test device according to fig. 2, and Fig. 9 is scintillation crystal test according to fig. 2
The stereoscopic schematic diagram of the partial sectional of device, by Fig. 8, Fig. 9 combination the figures above it is found that the scintillation crystal test device is assembling
When, first need to scintillation crystal to be tested be installed in crystal set, then crystal set is installed in crystal test cell 23, it is brilliant
Body test cell 23 is installed in the recessed portion 22 of loading part 20；Secondly it is placed in the sliding block 25 of loading part 20 is corresponding
In the guide-track groove 35 of coupling unit 30；Then simultaneously propelling loading is contacted with loading part 20 with the promotion part 15 on propulsive element 10
Component 20 along guide-track groove 35 to 30 internal slide of coupling unit, the screw thread of 12 inner wall of lid of propulsive element 10 and front end at this time
Being threadedly engaged on 31 outer walls, so that propulsive element 10 is fixed on the front end 31 of coupling unit 30；Further, pass through driving
The rotation of device 16 pushes promotion part 15 to continue to move.On the other hand, photoelectric detection unit 50 is loaded into exploring block 40
Portion, while by the inside of the insertion of the rear end of coupling unit 30 32 exploring block 40, so that the docking clamp 36 being distributed on rear end 32
Correspondence is caught in the docking card slot 43 of 40 inner wall of exploring block.With the movement of promotion part 15,23 edge of crystal test cell is pushed
Guide-track groove 35 continue to move, after the first platform 26 and the second platform 53 contact, the first spring 28 and second spring 55 start
Compression, scintillation crystal continue on the first aperture 27 and the second aperture 54 and move to electrooptical device 52, at this time the first coupling
It closes form 37 and the second coupling form 44 is overlapped and can couple 44 weight of form by the first coupling form 37 and second
Whether partially observable scintillation crystal and photoelectricity the dress parallel operation part 52 closed is coupled, changes when observing that scintillation crystal is filled with photoelectricity
When device 52 has completed coupling, that is, stop the work of driver 16, coupling is completed, into test phase.
Figure 10 is signal reading and the transmission circuit of scintillation crystal test device according to an embodiment of the invention
Schematic diagram, when entering test phase, since the scintillation crystal of test is coupled with electrooptical device 52, electrooptical device 52
Electronics read-out device 51 is inputted after the lower energy photon being deposited in scintillation crystal is converted to electric signal,
Master controller 47 is the core that Back end data reads and transmits, and by the starting of key-press input control circuit, is stopped
With reset etc. operation.Position, energy and the time letter of signal single event are obtained by the computing unit of electronics read-out device 51
Master controller is ceased and is sent into, specifically, computing unit can sample electric signal using the multivoltage threshold value method of sampling,
Computing unit includes amplifier, analog-digital converter (ADC), comparator and fpga chip, and electric signal is after amplifier amplifies
Into analog-digital converter, analog-digital converter carries out digitized sampling to the angle signal in electric signal, then defeated by LVDS interface
Enter in fpga chip, fpga chip calculates the energy of each road electric signal according to angle signal data by digital integration, then leads to
Cross energy information and location information that cumulative and gravity model appoach calculates electric signal；Electric signal is sent to comparator, comparator simultaneously
Electric signal is compared with fpga chip by the preset threshold value of voltage threshold control module, to obtain the more of electric signal
A threshold information；Master is responsible for various clock signals needed for providing whole system work, and fpga chip is according to default
The arrival time of each road logical pulse of threshold triggers carries out least square fitting to obtain the precise time letter of corresponding electric signal
Breath.Single event frame generation module in fpga chip encapsulates the matching of obtained location information, energy information and temporal information simultaneously
As a single event frame.These single event frames are finally sent to master controller 47 in a packed fashion.Master controller 47
It can according to need and event frame feeding network interface is stored or generated to data information；Single event data can also be carried out online
Preliminary performance parameter is calculated in classification processing.Finally by the display of display equipment 45 and reporting performance parameters and test knot
Fruit, this belongs to technical means commonly used by such a person skilled in the art, and details are not described herein.The connection of above-mentioned electronic circuit can pass through
The duct 48 (Fig. 8) being built in probe portion main body 41 carries out, this belongs to those skilled in the art's technological means easy to accomplish,
Details are not described herein.
The step of crystal test device provided by the invention is when carrying out scintillation crystal test is as follows:
Step 1: scintillation crystal to be measured is got out, is successively installed in crystal test cell 23 by hand；
Step 2: crystal test cell 23 is installed on and is loaded in main body 21；
Step 3: will load main body 21 and be installed in coupling unit 30, adjust loading main body by driver 16 and couple
Position in component 30；
Step 4: it after the completion of scintillation crystal is coupled with electrooptical device 52, is acquired by button log-on data；
Step 5: exploring block 40 acquires data and sends data to master controller 47, and master controller 47 carries out
Data analysis obtains temporal information, location information and the energy information of scintillation crystal, while these information are passed through display equipment
It is shown；
Step 6: repeatedly, until all device is closed in test to all scintillation crystals after the completion.
According to another embodiment of the invention, the shape of the promotion part 15 in Fig. 3 is also designed to other shapes, than
Such as M shape, circle, annular, triangle, figure and other irregular shapes, herein only as an example, not a limit；It drives
Dynamic device 16 may be arranged as other step devices or electronic driver so that the move distance of push rod 14 is more accurate,
Details are not described herein.It will be apparent to a skilled person that in the fig. 3 embodiment, knob, push rod 14 and promotion part 15
Cooperation can also be replaced using spring and the cooperation of promotion part 15, at this point, the bottom of lid 12 is fixed in one end of spring, promote
The other end of spring is fixed in portion 15, and details are not described herein.
According to another embodiment of the invention, in the fig. 4 embodiment, the shape for loading main body 21 is also designed to
Other shapes, such as cylindric, section are the other shapes such as the column of triangle, when being designed as other shapes, sliding block 25
Quantity can be deleted according to demand so that loading main body 21 and can sliding in coupling unit 30 is advisable, herein no longer
It repeats.
According to another embodiment of the invention, propulsive element 10, loading part 20, coupling unit 30 and exploring block 40
Outside the shell of anti-ionising radiation can also be set to make to tester when preventing test from the ionising radiation in source of penetrating
At injury, details are not described herein.
Scintillation crystal test device provided by the invention uses tubular docking structure and step by step structure, so that the device
Structure it is simple, it is easy to operate；Meanwhile the device volume is small and exquisite, and lightweight machined material can be used, portability is high；In addition,
The device provides a dark condition using inscribed tubular structure, for the test of scintillation crystal, tubular structure docking
Cavity increases the stability of scintillation crystal and electrooptical device coupling, and test result reliability is high, while collecting in a device
At preliminary test result display function, it can be used for detection, the maintenance service of large-scale digital PET device.
Above-described, only presently preferred embodiments of the present invention, the range being not intended to limit the invention, of the invention is upper
Stating embodiment can also make a variety of changes.Made by i.e. all claims applied according to the present invention and description
Simply, equivalent changes and modifications fall within the claims of the invention patent.The not detailed description of the present invention is
Routine techniques content.
Claims (18)
1. a kind of scintillation crystal test device characterized by comprising
Propulsive element, the driver that the propulsive element has push rod and connect with the push rod；
Loading part, the loading part include that loading main body and crystal test cell, the crystal test cell are set to institute
It states and loads in main body；
Coupling unit, the coupling unit are cylindrical in shape, and the first coupling form, the loading part are provided on the coupling unit
It is set to inside the coupling unit, the propulsive element is fixed on one end of the coupling unit, described in the push rod contradicts
Load main body；And
Exploring block, the exploring block include that electrooptical device and the electronics connecting with the electrooptical device are read
Device out, the exploring block are set to the other end of the coupling unit, are provided on the exploring block and described first
Couple the matched second coupling form of form, scintillation crystal and the electrooptical device coupling in the crystal test cell
It closes.
2. scintillation crystal test device according to claim 1, which is characterized in that one end of the coupling unit is formed with
Threaded cover shape is arranged in inside in screw thread, the propulsive element, and the propulsive element and the coupling unit pass through screw thread coupling
It closes and fixes.
3. scintillation crystal test device according to claim 1, which is characterized in that the push rod is set to the promotion part
The center of part, one end of the push rod are connect with the driver, and the other end of the push rod is formed with promotion part.
4. scintillation crystal test device according to claim 3, which is characterized in that the driver is knob, described to push away
It is provided on bar and the matched screw thread of the knob.
5. scintillation crystal test device according to claim 3, which is characterized in that the plane where the promotion part is vertical
Axis where the push rod, the promotion part are formed as crux, circular plate type, triangle, polygon or irregular
Shape.
6. scintillation crystal test device according to claim 1, which is characterized in that be provided with first in the loading main body
Buffer unit, first buffer unit are set to simultaneously on the outside of the crystal test cell.
7. scintillation crystal test device according to claim 6, which is characterized in that first buffer unit includes more
First spring and one first platform, first spring are arranged around the crystal test cell, and the one of first spring
End is set in the loading main body, and the other end of first spring is connect with first platform, on first platform
It is provided with and matched first aperture of the size of the crystal test cell.
8. scintillation crystal test device according to claim 1, which is characterized in that in the loading main body with the crystal
The opposite side of test cell is provided with the source of penetrating.
9. scintillation crystal test device according to claim 1, which is characterized in that be provided in the loading main body multiple
Sliding block, multiple guide-track grooves with sliding block cooperation are provided on the coupling unit inner wall, and the sliding block is placed in described lead
In track slot.
10. scintillation crystal test device according to claim 9, which is characterized in that the sliding block is set to the loading
On the side of main body, the extending direction of the sliding block is parallel with the length direction of the scintillation crystal.
11. scintillation crystal test device according to claim 1, which is characterized in that the crystal test cell has crystalline substance
Body set, the crystal put on the multiple shrinkage pools of setting, and the scintillation crystal is installed in the shrinkage pool.
12. scintillation crystal test device according to claim 1, which is characterized in that outside the other end of institute's coupling unit
It is provided with several docking clamps on wall, several are provided on the inner wall of the exploring block with described and docks what clamp cooperated
Dock card slot.
13. scintillation crystal test device according to claim 1, which is characterized in that set on the electronics read-out device
It is equipped with the second buffer unit, second buffer unit is set to simultaneously on the outside of the electrooptical device.
14. scintillation crystal test device according to claim 13, which is characterized in that second buffer unit includes more
Root second spring and one second platform, the second spring are arranged around the electrooptical device, the second spring
One end is set on the electronics read-out device, and the other end of the second spring is connect with second platform, and described
It is provided on two platforms and matched second aperture of the size of the electrooptical device.
15. scintillation crystal test device according to claim 1, which is characterized in that set on the outer wall of the exploring block
It is equipped with display screen, the display screen is connect with the electronics read-out device.
16. scintillation crystal test device according to claim 15, which is characterized in that set on the outer wall of the exploring block
It is equipped with key, the key is connect with the electronics read-out device.
17. scintillation crystal test device according to claim 1, which is characterized in that outside the electronics read-out device
The fixed block being arranged symmetrically is provided on wall, the fixed block is connected by the outer wall of third spring and the electronics read-out device
It connects.
18. scintillation crystal test device according to claim 1, which is characterized in that the propulsive element, the coupling part
Anti- ionising radiation shell is provided on the outside of part and the exploring block.
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| CN201811575889.0A CN109444182A (en) | 2018-12-22 | 2018-12-22 | A kind of scintillation crystal test device |
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| CN109633733A (en) * | 2019-01-25 | 2019-04-16 | 成都理工大学 | Using the digitlization anti-Compton spectral measurement system of particle event playback mode |
| CN112992645A (en) * | 2021-02-02 | 2021-06-18 | 江苏常宁电子有限公司 | Medical low-noise photomultiplier convenient for crystal replacement |
| WO2023092447A1 (en) * | 2021-11-24 | 2023-06-01 | 湖北锐世数字医学影像科技有限公司 | Test device and test method based thereon |
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