CN207679465U - A kind of PET imaging devices of varistructure - Google Patents
A kind of PET imaging devices of varistructure Download PDFInfo
- Publication number
- CN207679465U CN207679465U CN201720258455.2U CN201720258455U CN207679465U CN 207679465 U CN207679465 U CN 207679465U CN 201720258455 U CN201720258455 U CN 201720258455U CN 207679465 U CN207679465 U CN 207679465U
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- detection ring
- ball
- varistructure
- bed body
- rack
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Abstract
The utility model provides a kind of PET imaging devices of varistructure, including bed body and rack, for supporting the bottom supporting mechanism of bed body and rack, and the detection ring axial motion mechanism on the supporting mechanism of bottom for adjusting rack and the axial spacing of bed body；Rack includes gantry base, the fixed detection ring structure and the opposite mobile detection ring structure for being set to the other side above gantry base being set to above gantry base close to bed body side；Mobile detection ring structure includes a carrying platform, and the axial pitch adjusting structure being connected on carrying platform and mobile detection ring, axial pitch adjusting structure are relatively fixed the axial distance of detection ring structure for adjusting mobile detection ring.While the imaging device realizes the flexible variation of detection ring, additionally it is possible to realize that the axial spacing of rack and bed body is adjustable, there is preferable mechanical structure, stability is strong, high certainty of measurement, and detection ring, which has, converts flexible, fireballing feature.
Description
Technical field
The utility model is related to medical instruments field, more particularly to the PET imaging devices of a kind of varistructure.
Background technology
Positron emission tomography (Positron Emission Tomography, below abbreviation PET) is a kind of
The angiographic method of non-intrusion type.The basic principle that it is imaged is that positron-emitting radionuclides are marked on molecular probe, when putting
After the negative electron collision in positive electron and organism that the decay of penetrating property nucleic generates, it is 511KeV, fortune to send out a pair of of energy
The approximately opposed γ photons in dynamic direction.Incident γ photons are turned by the annular location sensitive radiation detector around organism
It is changed to electric signal, to obtain its energy, position and temporal information.By burying in oblivion the technology of meeting, annihilation event generation is obtained
Line position is responded, and distribution of the positron radionuclide in organism is obtained by two dimension or three-dimension disclocation algorithm for reconstructing, thus
Physiology in external observation organism and biochemical process.
In existing most of technologies, PET system still uses traditional common to design pattern, and each detecting module is completely solid
It is scheduled in rack, and performance, size are almost the same.System cannot adjust detection ring-shaped or detecting module performance structure as needed
At after the completion of system building, rack is fixed in detection process, or is rotated around fixed center with fixed mode.
There are some disadvantages for the prior art, and performance, the size of each detecting module of PET system first are almost the same, and are
System will not change after the completion of building.But in reality, demand thousand of the different application to PET system detector module property indices
Poor ten thousand not, or even mutually restrict.Under certain cost conditions constraint, often performance is insufficient on certain key indexes for PET system,
Performance is superfluous again in other indexs；Or in crucial imaging region performance deficiency, in other region performances surplus.It ultimately causes
Situation be the high performance universal PET instruments to involve great expense, on the one hand still cannot fully meet specific application demand, it is another
Its performance of aspect does not give full play to again, forms huge waste.In addition, in the conventional technology, after the completion of detection system is built, rack
It is fixed in detection process, or rotated around fixed center with fixed mode, rack flexibility is obviously insufficient, for
Different is fixed using the position of detector, also limits its detectability.
Utility model content
Purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of PET imaging devices of varistructure, the PET
The detecting structure of rack is flexible and changeable in imaging device, not only can with flexible transformation at different detection rings, but also detector it
Between angle and distance can adjust, detecting structure is more abundant, substantially increases its detectivity, increases PET imagings
Application range.
The utility model provides a kind of PET imaging devices of varistructure, including：Bed body and rack, for supporting institute
State the bottom supporting mechanism of bed body and rack, and the axial direction on the bottom supporting mechanism for adjusting rack and bed body
The detection ring axial motion mechanism of spacing；The rack includes gantry base, is set to above the gantry base close to bed body one
The fixed detection ring structure and the opposite mobile detection ring structure for being set to the other side above the gantry base of side；The movement
It includes a carrying platform to detect ring structure, and the axial pitch adjusting structure being connected with each other on the carrying platform and mobile spy
Survey ring, axial distance of the axial direction pitch adjusting structure for adjusting the relatively described fixed detection ring structure of the mobile detection ring.
Preferably, the fixed detection ring structure includes a carrying platform and the fixed spy on the carrying platform
Survey ring；At least two groups detecting structure, the detecting structure are had between the fixed detection ring and the mobile detection ring
Including the probe angle regulating part being oppositely arranged on respectively on fixed detection ring and mobile detection ring, respectively with the corresponding spy
The detector roll adjustment unit that device angle adjusting piece is connected is surveyed, and set on two detector roll adjustment units being oppositely arranged
Between detector fixed cell.
Preferably, the detector roll adjustment unit includes stepper motor and the first ball-screw component, the same spy
Two the first ball-screw components surveyed in device roll adjustment unit are arranged oppositely, pair of two the first ball-screw components
It is connected to face with corresponding detector fixed cell, the top of two the first ball-screw components connects the stepping electricity
The back side of machine, the opposite surface of two the first ball-screw components is connected with the probe angle regulating part, with logical
The movement that the stepper motor drives the first ball-screw component is crossed, drives the detector in the detector fixed cell round-trip
Movement.
Preferably, the fixed detection ring and the mobile detection ring include a detection ring motor, with the detection
The first connected ratcheting part of ring motor, and corresponding the second ratcheting part for detecting the setting of ring diameter size, the first ratcheting part
With the second ratcheting ratcheting setting of part, and the diameter of the first ratcheting part be less than the second ratcheting part diameter be arranged.
Preferably, the bottom of the frame is provided with multigroup sliding block, and multigroup sliding block setting is corresponded on the bottom supporting mechanism
There is sliding guide rail；The detection ring axial motion mechanism is the second ball-screw component, the second ball-screw component difference
It is slidably connected with multigroup sliding block and a driving motor is connected, to drive second ball wire by the driving motor
Thick stick component drives the relatively described bed body of the rack to be axially moved.
Preferably, it is additionally provided with a fixation machine between the bottom supporting mechanism and the detection ring axial motion mechanism
Structure, the fixed mechanism are fixedly connected with the bottom supporting mechanism and the detection ring axial motion mechanism respectively.
Preferably, the bed body includes bed surface and the lifting electric cylinder component for supporting bed surface.
Preferably, the bottom supporting mechanism includes mechanical support plate and is wrapped in the aluminium envelope on mechanical support plate surface layer
Skin.
Preferably, the first ball-screw component includes the lead screw being connected with stepper motor and feed screw nut, the silk
Stem nut sliding is placed on the lead screw, and the feed screw nut is connected with the corresponding detector fixed cell.
Preferably, the second ball-screw component includes the lead screw being connected to the motor and feed screw nut, the lead screw spiral shell
Mother's sliding is placed on the lead screw, and the feed screw nut is connected with the corresponding sliding block.
Detection ring axial motion mechanism is set to described by the PET imaging devices of varistructure provided by the utility model
On the supporting mechanism of bottom, the axial spacing of rack and bed body is adjusted by detecting ring axial motion mechanism, realizes bed body and machine
The spacing of frame is adjustable.In rack, by above gantry base, close to bed body side, detection ring structure, frame ground are fixed in setting
The seat top other side is arranged oppositely mobile detection ring structure, and can adjust mobile detection ring by axial pitch adjusting structure is relatively fixed
It is adjustable to realize the distance between detection ring result for the axial distance for detecting ring structure.Therefore, which realizes detection
While the flexible variation of ring, additionally it is possible to realize that the axial spacing of rack and bed body is adjustable, there is preferable mechanical structure, stablize
Property strong, high certainty of measurement, detection ring has transformation flexible, fireballing feature.
Description of the drawings
Fig. 1 is the structural schematic diagram of one embodiment of PET imaging devices of the utility model varistructure；
Fig. 2 is the vertical view of Fig. 1；
Fig. 3 is the mobile structural schematic diagram for detecting ring structure in the PET imaging devices of the utility model varistructure.
Specific implementation mode
For the benefit of to the understanding of the structure of the utility model, illustrate with reference to the accompanying drawings and embodiments.
Fig. 1 is the structural schematic diagram of one embodiment of PET imaging devices of the utility model varistructure, and Fig. 2 is bowing for Fig. 1
View, Fig. 3 are the mobile structural schematic diagram for detecting ring structure in the PET imaging devices of the utility model varistructure.In conjunction with Fig. 1
Shown in Fig. 3, the utility model provides a kind of PET imaging devices of varistructure, including：Bed body 10 and rack 20, for
The bottom supporting mechanism 30 of the bed body 10 and rack 20 is supported, and for adjusting machine on the bottom supporting mechanism 30
The detection ring axial motion mechanism 40 of frame 20 and the axial spacing of bed body 10.
The bed body 10 is electric cylinder lifting bed body or is scissor lift bed body.When bed body is that electric cylinder lifts bed body
When, including bed surface 11 and the lifting electric cylinder component 12 for supporting bed surface.
The rack 20 includes gantry base 21, is set to fixed detection of 21 top of the gantry base close to bed body side
Ring structure 22 and the opposite mobile detection ring structure 23 for being set to the 21 top other side of the gantry base.
In the present embodiment, the fixed detection ring structure 22 is including a carrying platform 221 and is set to the carrying platform
Fixed detection ring 222 on 221.The mobile detection ring structure 23 includes a carrying platform 231, and flat set on the carrying
The axial pitch adjusting structure 232 and mobile detection ring 233 being connected with each other on platform 231, the axial direction pitch adjusting structure 232 is for adjusting institute
State the axial distance of the relatively described fixed detection ring structure 222 of mobile detection ring 233.
233 bottom of the mobile detection ring is provided at least one set of sliding block 234, the carrying of the mobile detection ring structure 23
Above-mentioned sliding block 234 is corresponded on platform 231 is provided with sliding guide rail 235.Axial pitch adjusting structure 232 is ball in practical applications
Lead screw assembly, the ball-screw component include the lead screw being connected with stepper motor and feed screw nut, feed screw nut's sliding sleeve
It is placed on the lead screw, and the feed screw nut is connected with the sliding block 234 of mobile detection ring bottom setting.Pass through stepper motor
Lead screw rotation is driven, the axial distance that mobile detection ring 233 is relatively fixed detection ring structure 22 is realized and adjusts.
Further, at least two groups detection is had between the fixed detection ring 222 and the mobile detection ring 233
Structure 50, the detecting structure 50 include the detector being oppositely arranged on respectively on fixed detection ring 222 and mobile detection ring 233
Angle adjusting piece 51, the detector roll adjustment unit 52, Yi Jishe being connected respectively with the corresponding probe angle regulating part 51
Detector fixed cell 53 between two detector roll adjustment units 52 being oppositely arranged.
Further, the detector roll adjustment unit 52 includes stepper motor 521 and the first ball-screw component
522, two the first ball-screw components 522 in the same detector roll adjustment unit 52 are arranged oppositely, described in two
The opposite surface of first ball-screw component 522 is connected with corresponding detector fixed cell 53, two first ball wires
The top of thick stick component 522 connects the stepper motor 521, the back side of the opposite surface of two the first ball-screw components 522
It is connected with the probe angle regulating part 51, to drive the first ball-screw component 522 by the stepper motor 521
Movement, drive the detector back and forth movement in the detector fixed cell 53.
A preferably embodiment, as shown in figure 3, the fixed detection ring 222 and the mobile detection ring 233
Include a detection ring motor 61, the first ratcheting part 62 being connected with the detection ring motor 61, and corresponding detection ring diameter
Second ratcheting part 63 of size setting, 62 and second ratcheting part of the first ratcheting part, the 63 ratcheting setting, and it is described first ratcheting
The diameter that the diameter of part 62 is less than the second ratcheting part 63 is arranged.
In practical application, 20 bottom of the rack is provided with multigroup sliding block 24, and correspondence is more on the bottom supporting mechanism 30
Group sliding block 24 is provided with sliding guide rail 31.The detection ring axial motion mechanism 40 be the second ball-screw component, described second
Ball-screw component is slidably connected respectively with multigroup sliding block 24 and a driving motor is connected, to pass through the driving motor
Drive the second ball-screw component that the relatively described bed body 10 of the rack 20 is driven to be axially moved.
Please refer to Fig.1 with shown in Fig. 2, as a preferred embodiment, the first ball-screw component 522 include with
The connected lead screw 5221 of stepper motor 521 and feed screw nut 5222, the sliding of the feed screw nut 5222 are placed on the lead screw
On 5221, the feed screw nut 5222 is connected with the corresponding detector fixed cell 53.The second ball-screw group
Part includes the lead screw being connected to the motor and feed screw nut, and feed screw nut's sliding is placed on the lead screw, the lead screw spiral shell
It is female to be connected with corresponding sliding block 24.
It need to cause concern, bottom supporting mechanism described in practical application 30 and the detection ring axial motion mechanism 40
Between be additionally provided with a fixed mechanism 70, the fixed mechanism 70 respectively with the bottom supporting mechanism 30 and the detection ring
Axial motion mechanism 40 is fixedly connected, and realizes fixation of the whole device in use space.In addition, the bottom supporting mechanism 30 wraps
Include mechanical support plate and the aluminium strip of paper used for sealing for being wrapped in mechanical support plate surface layer.
Below the concrete application principle to a kind of PET imaging devices of varistructure provided by the utility model and details into
Row is described in detail.
The utility model proposes a kind of PET imaging devices of varistructure, please refer to Fig.1 with shown in Fig. 2, will detection annulate shaft to
Motion 40 is set on the bottom supporting mechanism 30, and rack 20 and bed body 10 are adjusted by detecting ring axial motion mechanism 40
Axial spacing, the spacing for realizing bed body 10 and rack 20 is adjustable.Specifically, since 20 bottom of rack is provided with multigroup cunning
Block 24 corresponds to multigroup sliding block 24 on the bottom supporting mechanism 30 and is provided with sliding guide rail 31, and sliding guide rail 31 is along bed body axial direction
Direction is arranged so that rack 20 can axially be slided on sliding guide rail 31 along bed body 10.In the embodiment, detection annulate shaft to
Motion 40 is the second ball-screw component, by the way that the lead screw in the second ball-screw component to be connected to the motor, and by silk
Stem nut sliding is placed on lead screw, is then correspondingly connected with sliding block 24 with feed screw nut, is rotated by motor and is driven lead screw fortune
It is dynamic so that being nested with the feed screw nut on lead screw can move up in the axis of lead screw, finally with the rack 20 above movable slider
10 adjustable range of opposite bed body.Wherein, bottom supporting mechanism 30 by aluminium strip of paper used for sealing and mechanical support board group at for strengthening rack
Whole structure makes rack overall operation stablize, and bed body realizes the lifting of bed to adapt to different patients' by servo electric jar 12
Climbing.In rack 20, close to the fixed detection ring structure 22 of 10 side of bed body setting, gantry base 21 above gantry base 21
The top other side is arranged oppositely mobile detection ring structure 23, and mobile detection 233 phase of ring can be adjusted by axial pitch adjusting structure 232
To the axial distance of fixed detection ring structure 22, it is adjustable to realize the distance between detection ring structure.Specifically, mobile detection
233 bottom of ring is provided with one group of sliding block 234, and above-mentioned sliding block is corresponded on the carrying platform 231 of the mobile detection ring structure 23
234 are provided with sliding guide rail 235.Axial pitch adjusting structure 232 is ball-screw component, the ball-screw component in practical applications
Include the lead screw being connected with stepper motor and feed screw nut, feed screw nut's sliding is placed on the lead screw, and the silk
Stem nut is connected with the sliding block 235 of 233 bottom of mobile detection ring setting.Lead screw rotation is driven by stepper motor, realizes silk
Movement of the stem nut on lead screw finally realizes the axial distance tune that mobile detection ring 233 is relatively fixed detection ring structure 22
Section.Finally, the PET imaging devices of the varistructure can also realize that the distance between probe angle adjusting and detector are adjusted
Section.Referring to Fig. 3, specifically, having at least two between the fixed detection ring 222 and the mobile detection ring 233
Group detecting structure 50, the detecting structure 50 include being oppositely arranged on respectively on fixed detection ring 222 and mobile detection ring 233
Probe angle regulating part 51, the detector roll adjustment unit 52 being connected respectively with the corresponding probe angle regulating part 51,
And the detector fixed cell 53 between two detector roll adjustment units 52 being oppositely arranged.Wherein, detector
Roll adjustment unit 52 includes stepper motor and the first ball-screw component, two institutes in the same detector roll adjustment unit 52
It states the first ball-screw component 522 to be arranged oppositely, the opposite surface of two the first ball-screw components 522 and corresponding detection
Device fixed cell 53 is connected, the top connection stepper motor 521 of two the first ball-screw components 522, two
The back side of the opposite surface of the first ball-screw component 522 is connected with the probe angle regulating part 51.Pass through spy
It surveys 51 the first ball-screw component 522 of control of device angle adjusting piece to freely swing, realizes the adjusting of probe angle, pass through step
Stepper motor 521 drives the movement of the first ball-screw component 522, and detector fixed cell 53 is driven to be transported back and forth along lead screw direction
It is dynamic so that fixed detector back and forth movement in detector fixed cell 53.In addition, as shown in figure 3, detecting ring structure mobile
23 in fixed detection ring structure 22, and carrying platform is the support member for detecting ring, the first ratcheting part 62 and the second ratcheting part 63
It is gear, two gear mesh realize that detection ring rotates integrally, and motor drives pinion rotation, pinion gear and gear wheel engagement
To drive gear wheel retarded motion.
Detection ring axial motion mechanism is set to described by the PET imaging devices of varistructure provided by the utility model
On the supporting mechanism of bottom, the axial spacing of rack and bed body is adjusted by detecting ring axial motion mechanism, realizes bed body and machine
The spacing of frame is adjustable.In rack, by above gantry base, close to bed body side, detection ring structure, frame ground are fixed in setting
The seat top other side is arranged oppositely mobile detection ring structure, and can adjust mobile detection ring by axial pitch adjusting structure is relatively fixed
It is adjustable to realize the distance between detection ring result for the axial distance for detecting ring structure.Therefore, which realizes detection
While the flexible variation of ring, additionally it is possible to realize that the axial spacing of rack and bed body is adjustable, there is preferable mechanical structure, stablize
Property strong, high certainty of measurement, detection ring has transformation flexible, fireballing feature.
The utility model is described in detail above in association with attached drawing embodiment, those skilled in the art can root
Many variations example is made to the utility model according to above description.Thus, certain details in embodiment should not be constituted to this practicality
Novel restriction, the utility model will be using the ranges that the appended claims define as protection domain.
Claims (10)
1. a kind of PET imaging devices of varistructure, which is characterized in that including：Bed body and rack, for support the bed body and
The bottom supporting mechanism of rack, and for the spy for the axial spacing for adjusting rack and bed body on the bottom supporting mechanism
Survey ring axial motion mechanism；
The rack includes gantry base, the fixed detection ring structure that is set to above the gantry base close to bed body side and
Opposite direction is set to the mobile detection ring structure of the other side above the gantry base；The mobile detection ring structure includes that a carrying is flat
Platform, and the axial pitch adjusting structure being connected with each other on the carrying platform and mobile detection ring, the axial direction pitch adjusting structure
For adjusting the axial distance of the relatively described fixed detection ring structure of the mobile detection ring.
2. the PET imaging devices of varistructure according to claim 1, which is characterized in that the fixed detection ring structure
Fixed detection ring including a carrying platform and on the carrying platform；The fixed detection ring and the mobile spy
At least two groups detecting structure is had between survey ring, the detecting structure includes being oppositely arranged on fixed detection ring and movement respectively
Detect the probe angle regulating part on ring, the detector roll adjustment list being connected respectively with the corresponding probe angle regulating part
Member, and the detector fixed cell between two detector roll adjustment units being oppositely arranged.
3. the PET imaging devices of varistructure according to claim 2, which is characterized in that the detector roll adjustment unit
Including stepper motor and the first ball-screw component, two first ball wires in the same detector roll adjustment unit
Thick stick component is arranged oppositely, and the opposite surface of two the first ball-screw components is connected with corresponding detector fixed cell,
The top of two the first ball-screw components connects the stepper motor, the opposite direction of two the first ball-screw components
The back side in face is connected with the probe angle regulating part, to drive the first ball-screw component by the stepper motor
Movement, drive the detector back and forth movement in the detector fixed cell.
4. the PET imaging devices of varistructure according to claim 3, which is characterized in that the fixed detection ring and
The mobile ring that detects detects ring motor including one, the first ratcheting part being connected with the detection ring motor, and corresponding spy
Survey the second ratcheting part of ring diameter size setting, the first ratcheting part and the second ratcheting ratcheting setting of part, and first tooth
The diameter that the diameter of component is less than the second ratcheting part is arranged.
5. the PET imaging devices of varistructure according to claim 1, which is characterized in that the bottom of the frame is provided with
Multigroup sliding block corresponds to multigroup sliding block on the bottom supporting mechanism and is provided with sliding guide rail；The detection ring axial motion mechanism
For the second ball-screw component, the second ball-screw component is slidably connected respectively with multigroup sliding block and a driving electricity
Machine is connected, to drive the second ball-screw component to drive the relatively described bed body of the rack axial by the driving motor
Movement.
6. the PET imaging devices of varistructure according to claim 5, which is characterized in that the bottom supporting mechanism with
A fixed mechanism is additionally provided between the detection ring axial motion mechanism, the fixed mechanism supports machine with the bottom respectively
Structure and the detection ring axial motion mechanism are fixedly connected.
7. the PET imaging devices of varistructure according to claim 1, which is characterized in that the bed body include bed surface with
And the lifting electric cylinder component for supporting bed surface.
8. the PET imaging devices of varistructure according to claim 1, which is characterized in that the bottom supporting mechanism packet
Include mechanical support plate and the aluminium strip of paper used for sealing for being wrapped in mechanical support plate surface layer.
9. the PET imaging devices of varistructure according to claim 3, which is characterized in that the first ball-screw group
Part includes the lead screw being connected with stepper motor and feed screw nut, and feed screw nut's sliding is placed on the lead screw, the silk
Stem nut is connected with the corresponding detector fixed cell.
10. the PET imaging devices of varistructure according to claim 5, which is characterized in that the second ball-screw group
Part includes the lead screw being connected to the motor and feed screw nut, and feed screw nut's sliding is placed on the lead screw, the lead screw spiral shell
It is female to be connected with the corresponding sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720258455.2U CN207679465U (en) | 2017-03-16 | 2017-03-16 | A kind of PET imaging devices of varistructure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720258455.2U CN207679465U (en) | 2017-03-16 | 2017-03-16 | A kind of PET imaging devices of varistructure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207679465U true CN207679465U (en) | 2018-08-03 |
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ID=62987391
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720258455.2U Expired - Fee Related CN207679465U (en) | 2017-03-16 | 2017-03-16 | A kind of PET imaging devices of varistructure |
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| Country | Link |
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| CN (1) | CN207679465U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464795A (en) * | 2021-07-27 | 2021-10-01 | 西安交通大学医学院第二附属医院 | Ray detector of nuclear medicine imaging equipment |
-
2017
- 2017-03-16 CN CN201720258455.2U patent/CN207679465U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113464795A (en) * | 2021-07-27 | 2021-10-01 | 西安交通大学医学院第二附属医院 | Ray detector of nuclear medicine imaging equipment |
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