CN108363092A - A kind of detector and positron emission computerized tomography system based on liquid cooling harden structure - Google Patents
A kind of detector and positron emission computerized tomography system based on liquid cooling harden structure Download PDFInfo
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- CN108363092A CN108363092A CN201711235897.6A CN201711235897A CN108363092A CN 108363092 A CN108363092 A CN 108363092A CN 201711235897 A CN201711235897 A CN 201711235897A CN 108363092 A CN108363092 A CN 108363092A
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- circuit board
- liquid cooling
- sipm
- detector
- fixed plate
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
- G01T1/2914—Measurement of spatial distribution of radiation
- G01T1/2985—In depth localisation, e.g. using positron emitters; Tomographic imaging (longitudinal and transverse section imaging; apparatus for radiation diagnosis sequentially in different planes, steroscopic radiation diagnosis)
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/42—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B6/4208—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/04—Electron multipliers
Abstract
The invention discloses a kind of detector based on liquid cooling harden structure and positron emission computerized tomography systems, belong to medicine imaging technique field.The detector based on liquid cooling harden structure includes：Liquid cooling plate, at least two SiPM circuit board assemblies and crystal；SiPM circuit board assemblies include：The circuit board being fixed by screws in liquid cooling, and the SiPM chips of welding on circuit boards；It is respectively arranged on the opposite side of circuit board：The first fixed plate and the second fixed plate for screw to be arranged；And second fixed plate have shape groove compatible with the first fixed plate；Crystal is covered on SiPM chips；Liquid cooling plate is for being passed through coolant liquid to reduce the operating temperature of at least two SiPM circuit board assemblies.Detector provided by the invention improves image quality using SiPM, and the connection of its circuit board is ingenious, and circuit board is accurately positioned in small space, ensure that the structural stability of detector.SiPM circuit board assemblies operating temperatures are reduced using liquid cooling plate, ensure the sensitivity of SiPM chips.
Description
Technical field
The present invention relates to medicine imaging technique field, more particularly to a kind of detector and positive electricity based on liquid cooling harden structure
Sub- emission computed tomography system.
Background technology
In Medical Imaging, PET (Positron Emission Tomography, positron emission computerized tomography) system
System is playing an increasingly important role as a kind of function imaging system.PET technologies are a kind of imaging techniques, can be noninvasive
Wound ground shows human organ function and metabolism.The early diagnosis to diseases such as tumours can be realized using PET technologies.Specifically,
Necessary substance is (such as during biological life is metabolized：Glucose, protein, nucleic acid, aliphatic acid) short-life radioactivity on label
Nucleic (such as 18F, 11C etc.), and the substance after label is injected into human body.Radioactive nucleus in metabolite is received by PET technologies
The ray that element is sent out forms the image of metabolite distribution situation in human body.Simultaneously using metabolite in normal structure and
The difference of distribution situation in pathological tissues to judge whether tissue lesion occurs, and then realizes the diagnosis to disease.Example
Such as, glucose metabolism is vigorous in the malignant tumor tissue of hypermetabolism, and aggregation is more, therefore by observed by PET technologies
The densely distributed tissue of glucose is possible for malignant tumour.
The component of core the most is detector in PET system, and detector includes circuit board, the signal of setting on circuit boards
Amplifying device and the crystal being covered on signal amplifier part.The ray that radionuclide is sent out is converted to by detector
Electric signal, and then form the distributed image of metabolite.In general, the signal amplifier part that traditional PET system uses is PMT
(Photomultiplier trube, photomultiplier), but it needs the operating condition of high pressure, and detection efficient is relatively low.With
Technology develops, and SiPM (Silicon Photomultipliers, solid state silicon multiplier tube) is a kind of completely new high sensitivity
Optical signal amplification device.Compared to traditional PMT, SiPM has the spies such as detection efficient high and low pressure operating condition, insensitive to magnetic field
Point, these features are conducive to obtain higher-quality detectable signal, to improve the picture quality acquired in PET system.Therefore it carries
It is particularly significant for a kind of detector with SiPM.
Invention content
To overcome the problems in correlation technique, an embodiment of the present invention provides a kind of detections based on liquid cooling harden structure
Device, the technical solution are specific as follows：
First aspect of the embodiment of the present invention provides a kind of detector based on liquid cooling harden structure, and the detector includes：
Liquid cooling plate), at least two solid state silicon multiplier tube SiPM circuit board assemblies and crystal；
The SiPM circuit board assemblies include：The circuit board being fixed by screws on the liquid cooling plate, and be welded on
SiPM chips on the circuit board；
It is respectively arranged on the opposite side of the circuit board：The first fixed plate and second for installing the screw is solid
Fixed board；And second fixed plate has shape groove compatible with first fixed plate；
The crystal is covered on the SiPM chips；
The liquid cooling plate is for being passed through coolant liquid to reduce the operating temperature of at least two SiPM circuit board assemblies.
Optionally, first fixed plate is semicircle fixed plate, and second fixed plate is with semi-circular recesses
Rectangular retaining plate.
Optionally, first fixed plate be rectangular retaining plate, second fixed plate include two rectangular slabs, described two
Interval between a rectangular slab forms rectangular recess.
Optionally, the liquid cooling plate includes：
Substrate for fixing the SiPM circuit board assemblies, and,
With the fixed liquid cooling pipe of the substrate, the liquid cooling pipe includes inlet and liquid outlet.
Optionally, the liquid cooling pipe includes：Sequentially connected first segment, second segment and third section；The first segment is flat
For row in the third section, the second segment is bending section；The diameter of the second segment and the first segment to the third section
Apart from equal.
Optionally, the liquid cooling pipe is prepared using integrated piping bending technique.
Optionally, the liquid cooling plate further includes：The pipe joint being connect with the inlet and the liquid outlet.
Optionally, through-hole is additionally provided on the substrate, the SiPM circuit board assemblies further include：It is arranged in the circuit
On plate side opposite with the SiPM chips to coupling, it is described that the through-hole may pass through to coupling.
Optionally, the detector further includes：The thermal conductive silicon rubber cushion being arranged between the substrate and circuit board.
Optionally, the detector further includes：Protective cover, the protective cover connect the liquid cooling plate, and are located at described
On SiPM circuit board assemblies and the crystal.
Second aspect of the embodiment of the present invention provides a kind of positron emission computerized tomography system, and the positron emission is disconnected
Layer scanning system includes the detector that first aspect present invention is provided.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：
Signal amplifier part by using SiPM as detector, and then improve the image quality of the detector.Also,
By the first fixed plate and the second fixed plate, both met the pinpoint requirement of adjacent circuit plate in small space, also for
Circuit board provides enough fixed spaces, therefore can use the screw of existing specification that circuit board is fixed on liquid cooling plate, protects
The structural stability for having demonstrate,proved the detector reduces the link cost of circuit board.Meanwhile by using the liquid cooling of liquid cooling heat exchange mode
Plate reduces the operating temperature of SiPM circuit board assemblies, promotes the sensitivity of SiPM chips, promotes acquired picture quality.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the structural schematic diagram of detector provided in an embodiment of the present invention；
Fig. 2 is the sectional view of detector provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram after detector removal outer cover provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of SiPM circuit board assemblies provided in an embodiment of the present invention；
Fig. 5 is the first circuit-board connecting structure schematic diagram provided in an embodiment of the present invention；
Fig. 6 is the partial enlargement structural representation of the first circuit-board connecting structure provided in an embodiment of the present invention；
Fig. 7 is second of circuit-board connecting structure schematic diagram provided in an embodiment of the present invention；
Fig. 8 is the third circuit-board connecting structure schematic diagram provided in an embodiment of the present invention；
Fig. 9 is the upward view of liquid cooling plate in detector provided in an embodiment of the present invention；
Figure 10 is the vertical view of liquid cooling plate in detector provided in an embodiment of the present invention.
Each label is respectively in attached drawing：
1, liquid cooling plate component,
11, substrate,
111, through-hole,
12, liquid cooling pipe,
121, first segment；
122, second segment；
123, third section；
13, pipe joint；
2, SiPM circuit board assemblies,
21, circuit board,
211, the first fixed plate,
212, the second fixed plate；
22, SiPM chips,
23, to coupling；
3, crystal；
4, protective cover；
5, thermal conductive silicon rubber cushion.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Signal amplifier part is the important component of detector, and the visible light signal for sending out crystal is converted into telecommunications
Number.Operating condition, sensitivity of signal amplifier part etc. all have the detection efficient of detector important influence.Existing detection
The signal amplifier part that device uses is photomultiplier (Photomultiplier trube, PMT), but PMT is needed in high pressure
Under the conditions of work, and detection efficient is relatively low, to influence the image quality of PET system.Solid state silicon multiplier tube
(Silicon Photomultipliers, SiPM) is a kind of completely new highly sensitive optical signal amplification device.Compared to tradition
PMT, SiPM have the characteristics that detection efficient is high, operating voltage is low, insensitive to magnetic field, these features are conducive to obtain higher quality
Detectable signal, to improve the picture quality acquired in PET system.
The characteristics of based on above-mentioned SiPM, an embodiment of the present invention provides a kind of using SiPM as the detection of signal amplifier part
Device.
As shown in Figure 1, and in conjunction with Fig. 2, Fig. 3, Fig. 4, an embodiment of the present invention provides one kind to be amplified using SiPM as signal
The detector of device, the detector are a kind of detectors based on liquid cooling harden structure, which includes：Liquid cooling plate 1, at least two
A SiPM circuit board assemblies 2 and crystal 3.
SiPM circuit board assemblies 2 include：It is fixed on the circuit board 21 on liquid cooling plate 1 by connector, and is welded on electricity
SiPM chips 22 on road plate 21.It is respectively arranged on the opposite side of circuit board 21：First for installation connecting element fixes
Plate 211 and the second fixed plate 212；And second fixed plate 212 have shape groove compatible with the first fixed plate 211.
Also, crystal 3 is covered on SiPM chips 22；Liquid cooling plate 1 is for being passed through coolant liquid to reduce by least two SiPM
The operating temperature of circuit board assemblies 2.
The use principle for the detector based on liquid cooling plate that the embodiment of the present invention is provided is as follows.
It converts the gamma-rays that radionuclide is sent out to visible light signal by crystal 3, passes through SiPM circuit board assemblies 2
In SiPM chips 22 convert the visible light signal that crystal 3 converts to electric signal.When using the detector, to liquid cooling plate 1
In be passed through coolant liquid, and since SiPM circuit board assemblies 2 are fixed on liquid cooling plate 1, by coolant liquid in liquid cooling plate 1 with
SiPM circuit board assemblies 2 and its surrounding space carry out heat exchange, realize the work temperature of 2 lower temperature of SiPM circuit board assemblies
Degree ensures the sensitivity of SiPM chips 22.
Wherein, connector can be screw, bolt etc., and the embodiment of the present invention is not specifically limited.
Further, following both sides explanation is done for the detector needs with SiPM：
On the one hand, due to the self-characteristic of SiPM chips, light output is sensitiveer at lower operating temperatures, and works
Temperature is lower, and its output signal is sensitiveer, is formed by picture quality higher.
In the related art, using air-cooled radiating mode, i.e., the work temperature of SiPM chips is reduced using circulation air
Degree.Usual PET device is arranged in individual space, therefore is limited to setting PET by air-cooled achieved operating temperature
The temperature in the space of equipment.So being difficult to realize lower operating temperature using air-cooled, and then influence the sensitive of SiPM chips
Degree.
In embodiments of the present invention, the detector provided has liquid cooling plate 1, that is, uses the heat exchange mode of liquid cooling.Tool
Body reduces the operating temperature for the SiPM circuit board assemblies 2 for including SiPM chips 22 by being passed through coolant liquid into liquid cooling plate 1.
The minimum operating temperature of SiPM components 2 achieved by this mode is related to the temperature of coolant liquid, generally can be near 0 DEG C.
When adding antifreezing agent into coolant liquid, such as：Strong electrolyte inorganic salts (chloride salt, villaumite hinder rust class, without chloride salt) are antifreeze
Agent, low-carbon alcohols antifreezing agent, dihydric alcohol and amides antifreezing agent etc. can be real by the liquid cooling plate 1 after adding antifreezing agent
Now it is less than 0 DEG C of operating temperature.
On the other hand, in pet detector, between adjacent S iPM circuit board assemblies 2 immediate SiPM chips 22 away from
It is 3.2mm from being fixed.In other words, it for adjacent S iPM circuit board assemblies 2, is used for two circuit boards 22
Fixed space is 3.2mm.
In related art, the both sides in adjacent circuit plate 21 are reserved with the fixed part that width is 1.6mm, should
SiPM chips 22 are no longer welded in the fixed part that width is 1.6mm, and are used to be arranged connector fixing circuit board 21.But by
It is narrow in the width of 1.6mm, it is difficult to find suitable connector, need to be customized, so increase the connection of circuit board 21
Cost.
In embodiments of the present invention, the structure based on above-mentioned liquid cooling plate 1, is respectively provided on the relative edge of circuit board 21
First fixed plate 211 and the second fixed plate 212, and the second fixed plate 212 has shape compatible with the first fixed plate 211
Groove, referring in particular to Fig. 3.Therefore when in use, in adjacent two pieces of circuit boards 21, the first fixed plate of one piece of circuit board 21
211 be caught in in the groove of the second fixed plate 212 of another piece of circuit board 21 so that two pieces of connected circuit boards 21 form one
Whole (as shown in Fig. 4~Fig. 8).At this point, since adjacent circuit plate 21 uses the first fixed plate 211 and the second fixed plate 212
The connection type of clamping, therefore every piece of circuit board 21 can have the width of 3.2mm, and the first fixed plate 211 after clamping
It is similarly 3.2mm with the overall width of the second fixed plate 212, that is, increases each piece of 21 width for fixing of circuit board.At this time
It can use the screw (diameter dimension of the screw head of M1.6mm is 3.0mm) of M1.6mm specifications that circuit board 21 is fixed on liquid
On cold plate 1, the link cost of circuit board has been saved, and can ensure the connection of circuit board 21 and liquid cooling plate 1 using screw
Stability.In this way, in the detector that the embodiment of the present invention is provided, the structure of circuit board 22 is improved, can be realized narrow
Accurate, stable position is carried out to circuit board in small space.
To sum up, in embodiments of the present invention, the signal amplifier part of detector is used as by SiPM, improves the detector
Image quality.Also, by the first fixed plate 211 and the second fixed plate 212, to meet spacing when adjacent circuit plate 21 connects
It is required that while being that circuit board 21 provides enough fixed spaces, therefore the screw of existing specification can be used to consolidate circuit board 21
It is scheduled on liquid cooling plate 1, ensure that the structural stability of the detector, reduce the link cost of circuit board.Meanwhile the detector
The liquid cooling plate 1 of liquid cooling heat exchange mode is additionally used to reduce the operating temperature of SiPM circuit board assemblies 2, ensures SiPM chips 22
Sensitivity ensures acquired picture quality, to prepare to judge that distribution of the metabolite in human body provides strong support.
About the specific implementation form of the first fixed plate 211 and the second fixed plate 212, offer of the embodiment of the present invention as follows may be used
Select mode.
In a kind of optional mode, as shown in Figure 5, Figure 6, the first fixed plate 211 is semicircle fixed plate, the second fixed plate
212 be the rectangular retaining plate with shape groove compatible with the first fixed plate 211.
More specifically, with reference to Fig. 6, the radius of the first fixed plate 211 is equal to 3.2mm；Second fixed plate 212 is located at groove two
The part of side, width 3.2mm, and the length of each section are all higher than or are equal to 3.2mm, such as 4mm, 5mm, 6mm etc..
In this way, the screw of M1.6mm specifications can be fixed in the first fixed plate 211 and the second fixed plate 212.
In another optional mode, as shown in fig. 7, the first fixed plate 211 is rectangular retaining plate, the second fixed plate 212
Including two rectangular slabs, and the interval between the two rectangular slabs forms shape groove compatible with the first fixed plate 211.
In use, the first fixed plate 211 is connected between two rectangular slabs of the second fixed plate 212.
More specifically, two pieces of rectangular slabs of the first fixed plate 211 and the second fixed plate 212, width are 3.2mm, length
More than or equal to 3.2mm, such as 4mm, 5mm, 6mm etc., so as to fixing screws.
In the optional mode, it should be noted that the first fixed plate 211 can also be trapezoidal (as shown in Figure 8), triangle
Shape etc..Correspondingly, the second fixed plate 212 includes two spaced trapezoidal plates or the triangular plate that two block gaps are arranged.
It is to sum up the structure in the embodiment of the present invention about circuit board, will specifically introduces the structure of liquid cooling plate 1 below.
As shown in figure 9, liquid cooling plate 1 includes：Substrate 11 for fixing SiPM circuit board assemblies 2, and, it is solid with substrate 11
Fixed liquid cooling pipe 12, liquid cooling pipe 12 include inlet and liquid outlet；Liquid cooling pipe 12 is prepared using integrated piping bending technique.
When in use, by the liquid cooling pipe for being connected to liquid supplying device into liquid cooling pipe of liquid cooling pipe 12, by the liquid outlet of liquid cooling pipe 12
It is connected to the liquid cooling pipe of drainage mechanism.Be passed through coolant liquid by the inlet of liquid cooling pipe 12, coolant liquid in liquid cooling pipe 12 with liquid cooling
Space around pipe 12 carries out heat exchange.And due to liquid cooling pipe 12 fix on the substrate 11, SiPM circuit board assemblies 2 be fixed on
On substrate 11, therefore the operating temperature of SiPM circuit board assemblies 2 can be reduced by liquid cooling pipe 12, ensure the spirit of SiPM chips 22
Sensitivity.Preferably, the length of liquid cooling pipe 12 is equal to the length of setting SiPM circuit board assemblies 2 on substrate 1.So that passing through this
Liquid cooling plate 1 can be that SiPM circuit board assemblies 2 all in detector provide suitable operating temperature.
Wherein, liquid cooling pipe 12 is prepared using copper material, it is preferred to use corrosion-resistant T2 copper materials (i.e. usually formed red copper).Substrate
11 are prepared using aluminium sheet using aluminium, and aluminium has good heat conductivility and processability, and advantage of lower cost.
Further, the concrete structure about liquid cooling pipe 12, liquid cooling pipe 12 can have multiple bending structures, S-type, W
Type etc..Or as shown in Figure 10, liquid cooling pipe 12 is U-shaped, and liquid cooling pipe 12 includes：Sequentially connected first segment 121, second segment
122 and third section 123.Wherein, first segment 121 is parallel to third section 123, and second segment 122 is bending section.And second segment 122
Diameter and first segment 121 to third section 123 at a distance from it is equal.Still optionally further, first segment 121 is not connected with second segment 122
End be inlet；The end that third section 123 is not connected with second segment 122 is liquid outlet.
Also, for the ease of connecting the liquid cooling pipe of the inlet of liquid cooling pipe 12 and liquid outlet and other equipment, in this hair
In bright embodiment, which further includes：The pipe joint 13 being connect with inlet and liquid outlet, pipe joint 13 is for connecting
Connect the pipeline of other equipment.
Further, in embodiments of the present invention, liquid cooling pipe 12 is prepared using integrated piping bending technique.Specifically,
Liquid cooling pipe 12 is a complete liquid cooling pipe, and weld seam is not present, and leakproofness is excellent, and avoiding the occurrence of leak influences the normal of equipment
It uses.
About the connection type of SiPM circuit board assemblies 2 and liquid cooling plate 1, in addition to circuit board 21 is fixed on base using screw
Except on plate 11, it is additionally provided with through-hole 111 (referring to Fig. 9, Figure 10) on the substrate 11, is additionally provided with to external on circuit board 21
First 23 (referring to Fig. 4), coupling 23 is arranged on the side opposite with SiPM chips 22 in this；And to coupling 23 it is pluggable
In through-hole 111.
By will be plugged in through-hole 111 to coupling 23, realize between SiPM circuit board assemblies 2 and liquid cooling plate 1
Limit is further arranged bolt, ensures the monolithic stability of detector later.
Also, in embodiments of the present invention, which further includes：The heat conduction being arranged between substrate 11 and circuit board 21
Silicagel pad 5.Specifically, in the corresponding position of thermal conductive silicon rubber cushion 5, it is provided with hollow out identical with 111 size of through-hole on substrate 11
Part, to be plugged in through-hole 111 to coupling 23.The main function of thermal conductive silicon rubber cushion 5 is subtracted as a kind of heat-conducting medium
Few thermal contact resistance generated between SIPM circuit boards and liquid cooling plate contact surface, to improve radiating efficiency.
In embodiments of the present invention, crystal 3 is cementing on SiPM chips 22.And crystal 3 needs that SiPM chips are completely covered
22。
Further, the detector that the embodiment of the present invention is provided further includes：Protective cover 4, protective cover 4 connect liquid cooling plate 1,
And it is located on SiPM circuit board assemblies 2 and crystal 3.Protective effect is played to whole detector by the protective cover 4, simultaneously
Also play light leakproofness.About 4 wall thickness of protective cover, material and preparation method, illustratively, protective cover 4 is to pass through injection molding
ABS plastic (Acrylonitrile Butadiene Styrene plastic, the acrylic nitrile-butadiene two of 1mm thickness prepared by technique
Alkene-polyglass) protective cover；Alternatively, protective cover 4 is to be protected by carbon fiber material prepared by model forming processing technology
Plate；Furthermore protective cover 4 is that the thickness prepared through the stamping process is less than the aluminum protective plate of 0.4mm.
Detector provided in an embodiment of the present invention based on cold water harden structure, using SiPM as signal amplifier part, tool
Have the characteristics that image quality is high.And it is connected by the first fixed plate 211 and the second fixed plate 212 to meet adjacent circuit plate 21
When pitch requirements, while also be circuit board 21 enough fixed spaces are provided, ensure the structural stability of the detector, reduce
The link cost of circuit board.Meanwhile the work of SiPM circuit board assemblies 2 is reduced by using the liquid cooling plate of liquid cooling heat exchange mode 1
Make temperature, ensure the sensitivity of SiPM chips 22, ensure acquired picture quality, to prepare to judge metabolite in human body
Distribution provide strong support.
Second aspect of the embodiment of the present invention, provides a kind of positron emission computerized tomography system, and the positron emission is disconnected
Layer scanning system includes the detector provided in first aspect of the embodiment of the present invention.
It is provided with first aspect of the embodiment of the present invention it is understood that positive electron method god's tomographic system has
The identical technique effect of detector, details are not described herein again.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of detector based on liquid cooling harden structure, which is characterized in that the detector includes：Liquid cooling plate (1), at least two
Solid state silicon multiplier tube SiPM circuit board assemblies (2) and crystal (3)；
The SiPM circuit board assemblies (2) include：It is fixed on the circuit board (21) on the liquid cooling plate (1) by connector, with
And it is welded on the SiPM chips (22) on the circuit board (21)；
It is respectively arranged on the opposite side of the circuit board (21)：The first fixed plate (211) for installing the connector
With the second fixed plate (212)；And second fixed plate (212) has shape compatible with first fixed plate (211)
Groove；
Crystal (3) gluing is on the SiPM chips (22)；
The liquid cooling plate (1) is for being passed through coolant liquid to reduce the operating temperature of at least two SiPM circuit board assemblies (2).
2. detector according to claim 1, which is characterized in that first fixed plate (211) is semicircle fixed plate,
Second fixed plate (212) is the rectangular retaining plate with semi-circular recesses.
3. detector according to claim 1, which is characterized in that first fixed plate (211) is rectangular retaining plate, institute
It includes two rectangular slabs to state the second fixed plate (212), and the interval between described two rectangular slabs forms rectangular recess.
4. detector according to claim 1, which is characterized in that the liquid cooling plate (1) includes：
Substrate (11) for fixing the SiPM circuit board assemblies (2), and,
With the substrate (11) fixed liquid cooling pipe (12), the liquid cooling pipe (12) includes inlet and liquid outlet.
5. detector according to claim 4, which is characterized in that the liquid cooling pipe (12) includes：Sequentially connected first
Section (121), second segment (122) and third section (123)；
The first segment (121) is parallel to the third section (123), and the second segment (122) is bending section；The second segment
(122) diameter is equal at a distance from the first segment (121) to the third section (123).
6. detector according to any one of claim 4 or 5, which is characterized in that the liquid cooling pipe (12) is using whole
Pipeline bending technique is prepared.
7. detector according to claim 4, which is characterized in that the liquid cooling plate (1) further includes：With the inlet and
The pipe joint (13) of the liquid outlet connection.
8. the detector according to any one of claim 4~7, which is characterized in that be additionally provided on the substrate (11)
Through-hole (111),
The SiPM circuit board assemblies (2) further include：It is arranged in the circuit board (21) and SiPM chips (22) opposite one
On side to coupling (23), it is described that can the through-hole (111) be passed through to coupling (23).
9. detector according to claim 4, which is characterized in that the detector further includes：It is arranged in the substrate
(11) the thermal conductive silicon rubber cushion (5) between circuit board (21).
10. detector according to claim 1, which is characterized in that the detector further includes：Protective cover (4), it is described anti-
Shield (4) connects the liquid cooling plate (1), and is located on the SiPM circuit board assemblies (2) and the crystal (3).
11. a kind of positron emission computerized tomography system, which is characterized in that the positron emission computerized tomography system includes power
Profit requires 1~10 any one of them detector.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406573A (en) * | 2018-12-10 | 2019-03-01 | 江苏赛诺格兰医疗科技有限公司 | It is a kind of for testing the test device and test method of thermal conductive silicon rubber mat thermal conductivity |
| CN109924995A (en) * | 2017-12-15 | 2019-06-25 | 深圳先进技术研究院 | Both-end reads detector cells and both-end reads detector |
| CN110261885A (en) * | 2019-07-02 | 2019-09-20 | 江苏赛诺格兰医疗科技有限公司 | Liquid cooling detector |
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