CN110441811A - Pet detector and medical imaging device with it - Google Patents
Pet detector and medical imaging device with it Download PDFInfo
- Publication number
- CN110441811A CN110441811A CN201910767830.XA CN201910767830A CN110441811A CN 110441811 A CN110441811 A CN 110441811A CN 201910767830 A CN201910767830 A CN 201910767830A CN 110441811 A CN110441811 A CN 110441811A
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- CN
- China
- Prior art keywords
- crystal
- array
- photoelectric converter
- pet detector
- board
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Classifications
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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
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/037—Emission tomography
-
- 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
-
- 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)
Abstract
A kind of pet detector provided by the invention and the medical imaging device with it, including crystal array, photoelectric converter and reading circuit, crystal array is optical coupled with photoelectric converter, photoelectric converter is arranged on photoelectric converter array board, reading circuit is arranged on reading circuit circuit board, photoelectric converter array board and reading circuit circuit board electrical connection, crystal array includes multiple crystal, crystal extension direction is determined from the direction of the gammaphoton plane of incidence to the crystal end-face opposite with the plane of incidence of crystal, along crystal extension direction and by the straight line of crystal array without reading circuit circuit board, the program is compared with the existing technology, along crystal extension direction and by the straight line of crystal array without reading circuit circuit board, i.e. reading circuit circuit board be placed on crystal array it is non-above or below region, to in P When ET detector is mounted between outer cylinder and inner cylinder, pet detector can be effectively reduced for the occupancy in the radial dimension space between outer cylinder and inner cylinder.
Description
Technical field
The present invention relates to field of medical imagings, more particularly to a kind of pet detector and with its medical imaging device.
Background technique
PET (Positron Emission Tomography) is a kind of functional imaging equipment, is usually set with structure imaging
Standby (such as CT, MR), which matches, synthesizes multi-modality imaging equipment.Pet detector is one of important component of PET device, is used to connect
After receipts penetrate the X-ray at human body or a certain position of animal, and the X-ray that will transmit through the level is changed into visible light, turned by photoelectricity
Transformation is electric signal, then switchs to digital signal, input meter through analog/digital converter (analog/digital converter)
The processing of calculation machine is to form CT image.Currently, pet detector structure generallys use layer paving type structure, i.e. crystal array, photoelectric conversion
Successively layer is spread for device (circuit board), cooling (support) structural member, rear end reading circuit etc., forms detector module.
But for small-sized PET device, when existing detector module is mounted in rack, the structure of layer paving type
The radial space of biggish machine frame inside can be occupied, to influence the size in the aperture of rack, to influence the quality of image reconstruction.
Summary of the invention
A kind of pet detector provided by the invention and the medical imaging device with it, it is existing in the prior art for solving
When having detector module to be mounted in rack, the structure of layer paving type can occupy the radial space of biggish machine frame inside, with shadow
The size for ringing the aperture of rack, thus the technical issues of influencing the quality of image reconstruction.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme:
A kind of pet detector, including crystal array, photoelectric converter and reading circuit, the crystal array with it is described
Photoelectric converter is optical coupled, and the photoelectric converter is arranged on photoelectric converter array board, and the reading circuit setting exists
On reading circuit circuit board, the photoelectric converter array board and the reading circuit circuit board electrical connection, the crystal array
Including multiple crystal, described in the direction determination from the gammaphoton plane of incidence of the crystal to the crystal end-face opposite with the plane of incidence
Crystal extension direction, along crystal extension direction and by the straight line of the crystal array without the reading circuit circuit
Plate.
The photoelectric converter array board and the reading circuit circuit board pass through flexible print in one of the embodiments,
Circuit board electrical connection processed.
Vertically crystal extension direction is arranged the photoelectric converter array board in one of the embodiments,.
The crystal end-face of the crystal array is arranged in the photoelectric converter array board in one of the embodiments,
Side.
The pet detector further includes the first cooler and the second cooler in one of the embodiments, and described first
Cooler and the direct thermal coupling of reading circuit circuit board, second cooler and the photoelectric converter array board thermal coupling
It closes.
First cooler includes cold plate and the cooling water pipe that is connected to the cold plate in one of the embodiments,
Second cooler includes at least one heat pipe, and the heat pipe and the first cooler thermal conductivity are logical.
Shading coating is arranged in the outer surface of the crystal array in one of the embodiments,.
The crystal array is fixedly connected or detachably with the photoelectric converter array board in one of the embodiments,
Connection.
The crystal array is fixedly connected by optical glue with the photoelectric converter in one of the embodiments,.
The present invention also provides following technical solutions:
A kind of medical imaging device, including hospital bed, rack, and the above-described pet detector being arranged in rack.
Compared with prior art, a kind of pet detector provided by the invention and the medical imaging device with it have such as
Lower advantage:
Along crystal extension direction and by the straight line of the crystal array without the reading circuit circuit board, i.e.,
Reading circuit circuit board be placed on crystal array it is non-above or below region, thus pet detector be mounted on outer cylinder with it is interior
When between cylinder, pet detector can be effectively reduced for the occupancy in the radial dimension space between outer cylinder and inner cylinder.
Detailed description of the invention
The following drawings is only used for that those skilled in the art is made to more fully understand technical solution of the present invention, is not to this hair
Bright limitation, those skilled in the art can obtain other attached drawings according to the technique and scheme of the present invention.
Fig. 1 is the structural schematic diagram of the medical imaging device of an embodiment provided by the invention；
Fig. 2 is the structural schematic diagram one at another visual angle of medical imaging device of an embodiment provided by the invention；
Fig. 3 is the structural schematic diagram two at another visual angle of medical imaging device of an embodiment provided by the invention.
Label declaration:
100, medical imaging device；10, rack；11, inner cylinder；12, outer cylinder；20, pet detector；21, crystal array；
211, crystal；212, the gammaphoton plane of incidence；22, photoelectric converter；23, reading circuit；24, photoelectric converter array board；25,
Reading circuit circuit board；26, flexible circuit board；27, the first cooler；271, cold plate；272, cooling water pipe；28, second
Cooler；281, heat pipe；29, substrate.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to better describe and illustrate embodiments herein, one or more attached drawing can refer to, but attached for describing
The additional detail or example of figure are not construed as to present invention creation, current described embodiment or preferred side
The limitation of the range of any one in formula.
It should be noted that when component be referred to as with another component " connection " when, it can directly with another component
It connects or there may also be components placed in the middle.When a component is considered as " being set to " another component, it be can be directly
It connects and is arranged on another component or may be simultaneously present component placed in the middle.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " it include one or more phases
Any and all combinations of the listed item of pass.
As shown in Figures 1 and 2, the present invention provides a kind of medical imaging device 100, which mainly uses
In the imaging of human body or zootomy structure, to obtain the medical image of test object.
Specifically, the medical imaging device 100 includes hospital bed (not shown), rack 10 and is arranged in rack 10
Pet detector 20.The rack 10 includes inner cylinder 11 and outer cylinder 12, and the inner cylinder 11 is set in the outer cylinder 12, described
Pet detector 20 is placed between the inner cylinder 11 and the outer cylinder 12, and the inner cylinder 11 is offered for accommodating human body or animal
The mounting hole (not shown) of anatomical structure.
Wherein, the inner cylinder 11 and the outer cylinder 12 are substantially cylindrical, and the outer cylinder 12 is to install the inner cylinder
11.Preferably, the axis of the inner cylinder 11 is substantially overlapped setting with the axis of the outer cylinder 12.
Further, as shown in figure 3, the pet detector 20 includes crystal array 21, photoelectric converter 22 and reads
Circuit 23, the crystal array 21 and the photoelectric converter 22 are optical coupled, and the setting of photoelectric converter 22 turns in photoelectricity
On converter array plate 24, the reading circuit 23 is arranged on reading circuit circuit board 25, the photoelectric converter array board 24
It is electrically connected with the reading circuit circuit board 25.
It is understood that the gammaphoton plane of incidence 212 on crystal array 21 is arranged towards mounting hole, crystal array 21
Gammaphoton is received, and sends photoelectric converter 22 for gammaphoton (not shown), photoelectric converter 22 receives gammaphoton
And processing is carried out to gammaphoton and is converted into photosignal, photosignal is sent to reading circuit 23, and reading circuit 23 receives simultaneously
Photosignal is converted to digital signal, to export image.
Further, as shown in figure 3, the crystal array 21 includes multiple crystal 211, from the gamma of the crystal 211
The direction of the photon plane of incidence 212 to the crystal end-face (figure do not mark) opposite with the plane of incidence 212 determines 211 side of extension of crystal
To along the 211 extension direction of crystal and by the straight line of the crystal array 21 without the reading circuit circuit board 25.
It is understood that along the 211 extension direction of crystal and by the straight line of the crystal array 21 without institute
State reading circuit circuit board 25, i.e., reading circuit circuit board 25 be placed on crystal array 21 it is non-above or below region, thus
When pet detector 20 is mounted between outer cylinder 12 and inner cylinder 11, can effectively reduce pet detector 20 for outer cylinder 12 with it is interior
The occupancy in the radial dimension space between cylinder 11.
In the present embodiment, pet detector 20 further includes substrate 29, and substrate 29 is axially disposed within outer cylinder along rack 10
Between 12 and inner cylinder 11；Crystal array 21, reading circuit 23 and photoelectric converter 22, which divide, to be arranged on substrate 29, and electricity is read
Road 23 and crystal array 21 are arranged at intervals on substrate 29, when pet detector 20 is mounted in rack 10, reduce PET to play
Effect of the detector 20 for the occupancy in the radial dimension space between outer cylinder 12 and inner cylinder 11.
Further, shading coating (not shown) is arranged in the outer surface of the crystal array 21.
It is understood that apply opaque by outer surface to glue crystal array 21, with to crystal array 21 come into
Row shading.The thinner thickness of shading coating, can further reduce pet detector 20 between outer cylinder 12 and inner cylinder 11
Radial dimension space occupancy.
Preferably, shading coating is black silicon layer.
Further, the photoelectric converter array board 24 passes through flexible printed circuit with the reading circuit circuit board 25
Plate 26 is electrically connected.
It is understood that passing through flexible printed circuit between photoelectric converter array board 24 and reading circuit circuit board 25
Plate 26 is electrically connected, and can make to carry out data, letter by flexible circuit board 26 between photoelectric converter 22 and reading circuit 23
Number, the transmitting of electricity etc., photoelectric converter 22 transmits signals to reading circuit 23 by flexible circuit board 26, by optical telecommunications
Number digital signal is converted to, reading simultaneously circuit circuit board 25 by flexible circuit board 26 is photoelectric converter array board 24
Power supply is provided.
In the present embodiment, flexible circuit board 26 is flexible PCB.Certainly, in other embodiments, flexible
Printed circuit board 26 can also be the structures such as connector, connector+Wire/cable contact member.
Further, the photoelectric converter array board 24 is arranged along the vertical 211 extension direction of crystal.It is understood that
, the photoelectric converter array board 24 is along vertical 211 extension direction of the crystal setting, i.e. photoelectric converter array board 24
It is not mounted to the radial direction of crystal 211, can not only effectively reduce pet detector 20 for the diameter between outer cylinder 12 and inner cylinder 11
To the occupancy of dimensional space；Meanwhile it can be convenient the installation between crystal array 21 and photoelectric converter array board 24.
Preferably, the photoelectric converter array board 24 is arranged in the gammaphoton plane of incidence 212 and and the plane of incidence
Opposite crystal end-face.
Further, in one embodiment, the crystal array 21 is fixedly connected with the photoelectric converter array board 24.
Preferably, crystal array 21 can be fixed on photoelectric converter array board by optical glue, to realize crystalline substance
Being fixedly connected between volume array 21 and photoelectric converter array board 24.It, can be with it is understood that fixed using optical glue
Crystal array 21 is avoided to be fixed on photoelectric converter array board 24 by side gripper fixed structure, to avoid because of crystal battle array
Fixed structure between column 21 and photoelectric converter array board 24 and increase the radial clearance between outer cylinder 12 and inner cylinder 11, in turn
Avoid pet detector 20 for the occupancy in the radial dimension space between outer cylinder 12 and inner cylinder 11.
In another embodiment, can detachably connect between the crystal array 21 and the photoelectric converter array board 24
It connects, consequently facilitating the dismounting between crystal array 21 and photoelectric converter array board 24.
In the present embodiment, the crystal array 21 is fixed by optical glue (not shown) and the photoelectric converter 22
Connection.
It is understood that crystal array 21 is bonded on photoelectric converter 22 using optical glue, it can be real simultaneously
Fixation and optical coupled effect between existing crystal array 21 and photoelectric converter 22, so that crystal array 21 be avoided to pass through
Side gripper fixed structure is fixed, to reduce the radial clearance between inner cylinder 11 and outer cylinder 12, and then reduces PET detection
Gap between device 20.
Further, as shown in figure 3, the pet detector 20 further includes the first cooler 27 and the second cooler 28, institute
State the first cooler 27 and the direct thermal coupling of the reading circuit circuit board 25, second cooler 28 and the photoelectric conversion
24 thermal coupling of device array board.
It is understood that the first cooler 27 leads the heat that reading circuit 23 and reading circuit circuit board 25 generate
Out, to reduce the temperature of reading circuit 23 and reading circuit circuit board 25；Second cooler 28 by photoelectric converter 22 and
The heat derives that photoelectric converter array board 24 generates, to reduce the temperature of photoelectric converter 22 and photoelectric converter array board 24
Degree.
Preferably, first cooler 27 includes cold plate 271 and the cooling water pipe 272 being connected to the cold plate 271, institute
Stating the second cooler 28 includes at least one heat pipe 281, and the heat pipe 281 and 27 thermal conductivity of the first cooler are logical.
It is understood that reading circuit circuit board 25 is mounted on cold plate 271, cold plate 271 to reading circuit 23 and
Reading circuit circuit board 25 cools down.Photoelectric converter array board 24 conducts heat to cold plate 271 by heat pipe 281, with
Reduce the temperature of photoelectric converter 22 and photoelectric converter array board 24.
Simultaneously as radial space of the cold plate 271 without being bound by inner cylinder 11 and outer cylinder 12,271 thickness of cold plate can be done
It is larger, corresponding 272 caliber of cooling water pipe can also do it is bigger, thus can also reduce circulating line due to corrosion cause
Blocking, further increase the reliability of pet detector 20.
At the same time, divide the different positions being on substrate 29 from photoelectric converter array board due to reading circuit circuit board 25
It sets, and reading circuit circuit board 25 and photoelectric converter array board are that indirect formula thermally contacts that (position of heat pipe 281 can make light
Electric transducer array board is separated with reading circuit circuit board 25), it can also be avoided as much as possible 25 (high fever of reading circuit circuit board
Power consumption area) heat affecting to photoelectric converter array board (low-heat power consumption area).
Further, the first cooler 27 further includes cold (not shown) and cooling medium (not shown), cooling water pipe
272 quantity is two, wherein the water outlet of one end of cooling water pipe 272 and cold connects, the other end and cold plate 271 connect
It is logical；One end of another cooling water pipe 272 and the water inlet of cold connect, and the other end is connected to cold plate 271.Cold is by wherein
Cooling medium is transported to cold plate 271 by a piece cooling water pipe 272, then by another cooling water pipe 272 by cooling medium band
To cold, entire first cooler 27 is made to form the circuit of circulation.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of pet detector, including crystal array (21), photoelectric converter (22) and reading circuit (23), the crystal
Array (21) and the photoelectric converter (22) are optical coupled, and the photoelectric converter (22) is arranged in photoelectric converter array board
(24) on, the reading circuit (23) is arranged on reading circuit circuit board (25), the photoelectric converter array board (24) with
Reading circuit circuit board (25) electrical connection, which is characterized in that the crystal array (21) includes multiple crystal (211), from
Described in the gammaphoton plane of incidence (212) of the crystal (211) is determined to the direction of the crystal end-face opposite with the plane of incidence (212)
Crystal (211) extension direction, along the crystal (211) extension direction and by the straight line of the crystal array (21) without institute
State reading circuit circuit board (25).
2. pet detector according to claim 1, which is characterized in that the photoelectric converter array board (24) with it is described
Reading circuit circuit board (25) is electrically connected by flexible circuit board (26).
3. pet detector according to claim 1, which is characterized in that the vertical institute of the photoelectric converter array board (24)
State the setting of crystal extension direction.
4. pet detector according to claim 1, which is characterized in that photoelectric converter array board (24) setting exists
The side of the crystal end-face of the crystal array (21).
5. pet detector according to claim 1, which is characterized in that the pet detector (20) further includes first cooling
Device (27) and the second cooler (28), first cooler (27) and the direct thermal coupling of the reading circuit circuit board (25),
Second cooler (28) and photoelectric converter array board (24) thermal coupling.
6. pet detector according to claim 5, which is characterized in that first cooler (27) includes cold plate (271)
And the cooling water pipe (272) being connected to the cold plate (271), second cooler (28) they include at least one heat pipe (281),
The heat pipe (281) and the first cooler (27) thermal conductivity are logical.
7. pet detector according to claim 1, which is characterized in that the outer surface of the crystal array (21), which is arranged, to be hidden
Light coating.
8. pet detector according to claim 1, which is characterized in that the crystal array (21) and the photoelectric conversion
Device array board (24) is fixedly connected or is detachably connected.
9. pet detector according to claim 1, which is characterized in that the crystal array (21) by optical glue with
The photoelectric converter (22) is fixedly connected.
10. a kind of medical imaging device (100), which is characterized in that including hospital bed, rack (10) and setting in rack (10)
Claim 1 to claim 9 any one described in pet detector (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910767830.XA CN110441811B (en) | 2019-08-20 | 2019-08-20 | PET detector and medical imaging equipment with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910767830.XA CN110441811B (en) | 2019-08-20 | 2019-08-20 | PET detector and medical imaging equipment with same |
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| Publication Number | Publication Date |
|---|---|
| CN110441811A true CN110441811A (en) | 2019-11-12 |
| CN110441811B CN110441811B (en) | 2021-05-04 |
Family
ID=68436543
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910767830.XA Active CN110441811B (en) | 2019-08-20 | 2019-08-20 | PET detector and medical imaging equipment with same |
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Cited By (1)
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| CN112353410A (en) * | 2020-10-26 | 2021-02-12 | 武汉联影生命科学仪器有限公司 | Miniature positron emission imaging detector and miniature positron emission imaging equipment |
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| CN110441811B (en) | 2021-05-04 |
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