CN106449003A - Superconducting magnet for magnetic resonance imaging of laboratory - Google Patents
Superconducting magnet for magnetic resonance imaging of laboratory Download PDFInfo
- Publication number
- CN106449003A CN106449003A CN201610816164.0A CN201610816164A CN106449003A CN 106449003 A CN106449003 A CN 106449003A CN 201610816164 A CN201610816164 A CN 201610816164A CN 106449003 A CN106449003 A CN 106449003A
- Authority
- CN
- China
- Prior art keywords
- magnet
- skeleton
- coil
- barrel
- magnetic field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
- G01R33/3815—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets with superconducting coils, e.g. power supply therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/02—Quenching; Protection arrangements during quenching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/04—Cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
The invention discloses a superconducting magnet for magnetic resonance imaging of a laboratory. The superconducting magnet comprises a magnet outer barrel, a magnet inner barrel, a 60K magnet thermal shield and a 4K barrel container, wherein the magnet outer barrel, the magnet inner barrel, the 60K magnet thermal shield and the 4K barrel container are sequentially coated and arranged from large to small; the 4K barrel container is provided with a main skeleton and a shielding skeleton; the inner wall of the main skeleton and the side wall of the shielding skeleton form one part of structure of the 4K barrel container; a main coil is arranged in the main skeleton; an adjusting skeleton is arranged at the upper end of the main skeleton; an adjusting coil is arranged in the adjusting skeleton; a multi-channel high-order magnetic field correcting coil is arranged at the upper end of the adjusting skeleton; and a shielding coil is arranged at one side of the shielding skeleton. After the structure is adopted, the nonuniformity of a high-order nonlinear magnetic field in an imaging area is corrected, so that the high uniformity of the magnetic field is obtained, the weight of the magnet is reduced, the size of the magnet is also reduced, the overall superconducting magnet becomes more compact and the capacity of liquid helium is reduced.
Description
Technical field
The present invention relates to a kind of magnetic resonance imaging system, it is used for testing in more particularly, to a kind of magnetic resonance imaging system
The superconducting magnet of the nuclear magnetic resonance of room.
Background technology
At present, nuclear magnetic resonance（MRI）System mainly comprises magnet system, spectrometer, gradient system, radio system, wherein
Magnetic resonance imaging system signal intensity quadratic relationship approximate with magnet field intensity, and magnet generation field intensity is higher, magnetic field homogeneity is got over
Good, imaging is more clear, especially in some field of scientific studies, higher to the field intensity and uniformity requirement of magnet, so such as
What researches and develops a kind of super high field high uniformity superconducting magnet has just become one of important goal of current magnetic resonance imaging system development.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of magnetic field homogeneity height, magnet structure compact and magnet operation peace
Entirely, it is not likely to produce the superconducting magnet of the nuclear magnetic resonance for laboratory of vortex phenomenon.
In order to solve above-mentioned technical problem, the invention provides a kind of superconducting magnetic of the nuclear magnetic resonance for laboratory
Body, it includes magnet outer barrel, bucket, the cold screen of 60K magnet and 4K barrel, bucket, 60K magnetic in described magnet outer barrel, magnet in magnet
The cold screen of body and the descending cladding arrangement successively of 4K barrel, described 4K barrel is provided with main framing and shielding skeleton, described
Main framing inwall constitutes a part of structure of 4K barrel with shielding skeleton side wall, is provided with main coil, described master in described main framing
Skeleton upper end is provided with adjustment skeleton, is provided with adjustment coil in described adjustment skeleton, and described adjustment skeleton upper end is provided with multichannel
Order magnetic field correction coil, described shielding skeleton side is provided with shielded coil, and described shielded coil one end is provided with patchboard, described
Patchboard is provided with pressure regulating heating device, and the cold screen periphery of described 60K magnet is provided with cooling circuit, described magnet outer tube and 60K magnet
In cold screen, top overlapping is provided with first through hole and the second through hole, is provided with cold-junction container in described first through hole, and described second leads to
In the hole is extended with neck tube container, and described magnet outer barrel is provided with end socket and service tower.
Described multichannel order magnetic field correction coil includes Z0, Z1, Z2, Z3, Z4, X1, Y1, ZX, ZY, XY, X2-Y2 model
Coil, for improving superconducting magnet magnetic field homogeneity in required imaging region；In described multichannel order magnetic field correction coil
Z0, Z1, Z2, Z3, Z4 model coil be directly wound in fiberglass skeleton wire casing, described multichannel order magnetic field correction coil
Middle X1, Y1, ZX, ZY, XY, X2-Y2 model coil is arranged on epoxy plate, then will contain coil epoxy plate coiling glass steel skeleton
On, multichannel order magnetic field correction coil is connected in bolt mode with adjustment skeleton, for ensureing each coil position relation
And bonding strength.
The cold screen termination of described 60K magnet is provided with end casing, enclose in the cold screen of described 60K magnet with end casing on offer recessed
Groove, described groove sets gap spacing as 0.5 ~ 1.5mm.
Described pressure regulating heating device is made up of glass steel skeleton, constantan line and copper mesh protective cover, and described pressure regulating heating device adopts
With, on health copper wire winding glass steel skeleton, adding copper mesh protective cover in constantan line outer surface, described glass steel skeleton lower end is fixed
It is provided with aluminium alloy bolt and aluminium alloy nut, pass through epoxy glue hydropexis between described aluminium alloy bolt and glass steel skeleton and glue
Connect, described pressure regulating heating device is fixed on patchboard by aluminium alloy bolt and aluminium alloy nut；Described pressure regulating heating device cooperation
Corresponding pressure control system, controls pressure in 4K barrel to maintain 0 ~ 2000Pa malleation by pressure detecting, stops extraneous gas
Body enters in superconducting magnet and solidifies.
Described patchboard adopts epoxy plate to make, and described patchboard is arranged at bottom in 4K barrel, for arranging superconduction
Switch, superconducting joint and pressure regulating heating device；The cold screen of described 60K magnet is made using aluminum material.
After the present invention adopts said structure, its advantage is：
（1）One kind according to the present invention is used for toy nuclear magnetic resonance super high field high uniformity superconducting magnet, described super high field
For 4.7T, 7T, 9.4T, magnet bore contains 210mm, 310mm, 410mm, 200mm～450mm respectively.（2）Described 4K barrel
It is provided with main framing and shielding skeleton, described main framing inwall constitutes a part of structure of 4K barrel, institute with shielding skeleton side wall
State in main framing and be provided with main coil, described main framing upper end is provided with adjustment skeleton, is provided with adjustment coil in described adjustment skeleton,
Coil rack and 4K barrel are merged, in the case of ensureing that liquid helium chamber volume is certain, main framing inwall and shielding skeleton side wall
As a 4K barrel part, not only mitigate magnet weight, also reduce magnet size so that whole superconducting magnet becomes tighter
Gather, reduce liquid helium capacity.（3）Described 4K barrel is provided with main framing and shielding skeleton, described main framing inwall and shielding bone
Frame side wall constitutes a part of structure of 4K barrel, is provided with main coil, described main framing upper end is provided with adjustment bone in described main framing
Frame, is provided with adjustment coil in described adjustment skeleton, described adjustment skeleton upper end is provided with multichannel order magnetic field correction coil, surpasses
Multichannel order magnetic field correction coil is adopted, multichannel order magnetic field correction coil makes in different bore magnets in magnetic conductor,
High-order nonlinear magnetic field bump in imaging region is revised, thus obtaining highfield uniformity；Such as
7T210mm bore superconducting magnet, in the spherical imaging area of 8cm, uniformity is better than 0.5ppm.In addition, multichannel order magnetic field correction
Coil generally includes（Z0, Z1, Z2, Z3, Z4, X1, Y1, ZX, ZY, XY, X2-Y2）, but it is not limited only to above-mentioned coil, pass through
Multichannel order magnetic field correction coil ensure that superconducting magnet all has very high uniformity in required imaging region；Such as
7T210mm bore superconducting magnet, in 8cmDSV region（Spheric region）Magnetic field homogeneity can be better than 0.5ppm, also, multichannel
In order magnetic field correction coil（Z0, Z1, Z2, Z3, Z4）It is directly to be wound in fiberglass skeleton wire casing, and multichannel is high
Rank magnetic field is revised in coil（X1,Y1,ZX,ZY,XY,X2-Y2）It is to be fabricated separately on thin epoxy plate, then containing coil loop
On oxygen plate coiling glass steel skeleton, last multichannel order magnetic field correction coil rack is carried out even in bolt mode with adjustment skeleton
Connect, be so not only convenient for ensureing each coil position relation, and ensure multichannel order magnetic field correction coil bonding strength.
（4）The cold screen periphery of described 60K magnet is provided with cooling circuit and adopts cooling circuit on 60K screen it is ensured that superconducting magnet is in pre-cooling
Under stage, power-off or cooling system operation irregularity situation, make full use of the sensible heat of liquid helium so that 60K screen is in compared with low-temperature space, protect
Demonstrate,prove superconducting magnet and be still within one compared with low drain heat level, reduce liquid helium consumption.（5）The cold screen termination of described 60K magnet is provided with
End casing, enclose in the cold screen of described 60K magnet with end casing on open up fluted, described groove set gap spacing as 0.5 ~
1.5mm, can greatly weaken vortex on 60K screen and produce.（6）Described shielding skeleton side is provided with shielded coil, described shielding line
Circle one end is provided with patchboard, and described patchboard is provided with pressure regulating heating device, and pressure regulating heating device is with health copper wire winding glass reinforcing bar
On frame, in outer surface plus copper mesh protective cover, epoxy glue hydropexis, between aluminium alloy bolt and glass steel skeleton, pass through epoxy glue
Bonding, pressure regulating heating device is fixed on patchboard by aluminium alloy bolt and aluminium alloy nut；Cooperation corresponding pressure control system,
And passing through pressure detecting, in its energy effective control 4K bucket, pressure maintains 0 ~ 2000Pa malleation, stops ambient atmos from entering superconduction
Solidify in magnet, ensure superconducting magnet safe operation.
Brief description
Fig. 1 is used for the structural representation of the superconducting magnet of nuclear magnetic resonance of laboratory for the present invention.
Fig. 2 is used for 60K magnet cold screen structural representation in the superconducting magnet of nuclear magnetic resonance of laboratory for the present invention.
Fig. 3 is used for the structural representation of pressure regulating heating device in the superconducting magnet of nuclear magnetic resonance of laboratory for the present invention.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description it is impossible to be not understood as to the present invention's
Limit；
As illustrated in the accompanying drawings from 1 to 3, a kind of superconducting magnet of the nuclear magnetic resonance for laboratory, it includes magnet outer barrel 1, magnet
Interior bucket 2, the cold screen of 60K magnet 3 and 4K barrel 4, bucket 2, the cold screen of 60K magnet 3 and 4K barrel 4 in described magnet outer barrel 1, magnet
Descending cladding arrangement successively, described 4K barrel 4 is provided with main framing 401 and shielding skeleton 402, described main framing 401
Inwall constitutes a part of structure of 4K barrel 4 with shielding skeleton 402 side wall, is provided with main coil 403, institute in described main framing 401
State main framing 401 upper end and be provided with adjustment skeleton 404, in described adjustment skeleton 404, be provided with adjustment coil 405, described adjustment bone
Frame 404 upper end is provided with multichannel order magnetic field correction coil 406, and described shielding skeleton 402 side is provided with shielded coil 407, institute
State shielded coil 407 one end and be provided with patchboard 408, described patchboard 408 is provided with pressure regulating heating device 409, described 60K magnet is cold
Shield 3 peripheries and be provided with cooling circuit 5.Described 4K barrel 4 is all no direct with bucket 2 in the cold screen of 60K magnet 3, magnet outer barrel 1 and magnet
Contact.Described 4K barrel 4 is directly connected with magnet outer barrel 1 by 12 lower thermal conductivity high intensity pull bars, has so both ensured magnetic
Body structural stability, and the leakage heat to 4K barrel 4 for the very big reduction；Lower thermal conductivity high intensity pull bar generally using but be not limited to
Glass fibre, carbon fiber and Kev such as draw to make at the material；Lower thermal conductivity high intensity Tiebar structure generally using but be not limited to ring
Shape runway form.The cold screen of described 60K magnet 3 and bucket 2 in magnet outer barrel 1 and magnet all no directly contacts.The cold screen of described 60K magnet
3 are directly connected with magnet outer barrel 1 by 8 lower thermal conductivity high intensity pull bars, have so both ensured magnet structure stability, and greatly
Reduce thermic load on the cold screen of 60K magnet 3 it is ensured that under the premise of same refrigeration acc power, the cold screen of 60K magnet 3 can reach more
Low temperature, thus reduce the leakage heat to 4K barrel 4 further；Lower thermal conductivity high intensity pull bar generally using but be not limited to glass
Glass fiber, carbon fiber and Kev such as draw to make at the material；Lower thermal conductivity high intensity Tiebar structure generally using but be not limited to annular
Runway form.Described multichannel order magnetic field correction coil 406 includes Z0, Z1, Z2, Z3, Z4, X1, Y1, ZX, ZY, XY, X2-Y2
Model coil, for improving superconducting magnet magnetic field homogeneity in required imaging region, such as 7T210mm bore superconducting magnetic
Body, in 8cmDSV region（Spheric region）Magnetic field homogeneity can be better than 0.5ppm.Described multichannel order magnetic field correction coil 406
In Z0, Z1, Z2, Z3, Z4 model coil be directly wound in glass steel skeleton 410 wire casing, described multichannel order magnetic field is repaiied
In positive coil 406, X1, Y1, ZX, ZY, XY, X2-Y2 model coil is fabricated separately on thin epoxy plate, then will contain coil epoxy
On plate coiling glass steel skeleton 410, multichannel order magnetic field correction coil 406 is connected in bolt mode with adjustment skeleton 404,
So it is not only convenient for ensureing each coil position relation, and ensure high-order shim coil 407 bonding strength.Described 60K magnetic
The cold screen of body 3 termination is provided with end casing 301, enclose in the cold screen 3 of described 60K magnet with end casing 301 on open up fluted 302, described
Groove 302 sets gap spacing as 0.5 ~ 1.5mm, reduces changes of magnetic field and leads to the eddy current on the cold screen of 60K magnet.Described tune
Pressure heater 409 is made up of glass steel skeleton 410, constantan line 411 and copper mesh protective cover 412, and described pressure regulating heating device 409 adopts
With, on constantan line 411 coiling glass steel skeleton 410, adding copper mesh protective cover 412, described fiberglass in constantan line 411 outer surface
Skeleton 410 lower end is fixed with aluminium alloy bolt 413 and aluminium alloy nut 414, described aluminium alloy bolt 413 and glass steel skeleton
Pass through epoxy glue hydropexis bonding, described pressure regulating heating device 409 passes through aluminium alloy bolt 413 and aluminium alloy nut 414 between 410
It is fixed on patchboard 408；Described pressure regulating heating device 409 coordinates corresponding pressure control system, controls 4K bucket by pressure detecting
In container 4, pressure maintains 0 ~ 2000Pa malleation, stops ambient atmos from entering in superconducting magnet and solidifies.Described patchboard 408
Made using epoxy plate, described patchboard 408 is arranged at bottom in 4K barrel 4, for arrange superconducting switch, superconducting joint and
Pressure regulating heating device 409.The cold screen 3 of described 60K magnet is made using aluminum material, and described 60K magnet cold screen 3 periphery is provided with and cools back
Road 5, makes the cold screen of 60K magnet 3 be in for superconducting magnet relatively low under pre-cooling stage, power-off or cooling system operation irregularity situation
Warm area, leaks heat to 4K barrel 4 it is ensured that superconducting magnet stable operation to reduce.In described magnet outer barrel 1 and the cold screen of 60K magnet 3
Top overlapping is provided with first through hole 6 and the second through hole 7, is provided with cold-junction container 8, described second through hole 7 in described first through hole 6
Inside it is extended with neck tube container 9.Described magnet outer tube 1 is provided with end socket 10 and service tower 11.
Above are only the specific embodiment of the present invention, but the design concept of the present invention is not limited thereto, all utilize this
Design carries out the change of unsubstantiality to the present invention, all should belong to the infringement scope of the present invention and behavior.
Claims (4)
1. a kind of superconducting magnet of the nuclear magnetic resonance for laboratory it is characterised in that：It includes magnet outer barrel（1）, magnet
Interior bucket（2）, the cold screen of 60K magnet（3）With 4K barrel（4）, described magnet outer barrel（1）, bucket in magnet（2）, the cold screen of 60K magnet
（3）With 4K barrel（4）Descending cladding arrangement successively, described 4K barrel（4）It is provided with main framing（401）With shielding bone
Frame（402）, described main framing（401）Inwall and shielding skeleton（402）Side wall constitutes 4K barrel（4）A part of structure, described
Main framing（401）Inside it is provided with main coil（403）, described main framing（401）Upper end is provided with adjustment skeleton（404）, described adjustment bone
Frame（404）Inside it is provided with adjustment coil（405）, described adjustment skeleton（404）Upper end is provided with multichannel order magnetic field correction coil
（406）, described shielding skeleton（402）Side is provided with shielded coil（407）, described shielded coil（407）One end is provided with patchboard
（408）, described patchboard（408）It is provided with pressure regulating heating device（409）, the cold screen of described 60K magnet（3）Periphery is provided with cooling circuit
（5）；Described magnet outer barrel（1）The cold screen with 60K magnet（3）Interior top overlapping is provided with first through hole（6）With the second through hole（7）,
Described first through hole（6）Inside it is provided with cold-junction container（8）, described second through hole（7）Inside it is extended with neck tube container（9）；Described magnet
Outer barrel（1）It is provided with end socket（10）With service tower（11）；Described pressure regulating heating device（409）By glass steel skeleton（410）, constantan line
（411）With copper mesh protective cover（412）Composition, described pressure regulating heating device（409）Using constantan line（411）Coiling glass steel skeleton
（410）On, in constantan line（411）Outer surface adds copper mesh protective cover（412）, described glass steel skeleton（410）Lower end fixation sets
There is aluminium alloy bolt（413）With aluminium alloy nut（414）, described aluminium alloy bolt（413）With glass steel skeleton（410）Between
By epoxy glue hydropexis bonding, described pressure regulating heating device（409）By aluminium alloy bolt（413）With aluminium alloy nut（414）
It is fixed on patchboard（408）On；Described pressure regulating heating device（409）Coordinate corresponding control pressurer system, by pressure detecting control
4K barrel processed（4）Interior pressure maintains 0～2000Pa malleation, stops ambient atmos from entering in superconducting magnet and solidifies.
2. the nuclear magnetic resonance for laboratory according to claim 1 superconducting magnet it is characterised in that：Described lead to more
Road order magnetic field correction coil（406）Including Z0, Z1, Z2, Z3, Z4, X1, Y1, ZX, ZY, XY, X2-Y2 model coil, it is used for
Improve superconducting magnet magnetic field homogeneity in required imaging region；Described multichannel order magnetic field correction coil（406）In Z0,
Z1, Z2, Z3, Z4 model coil is directly wound on glass steel skeleton（410）In wire casing, described multichannel order magnetic field correction coil
（406）Middle X1, Y1, ZX, ZY, XY, X2-Y2 model coil is arranged on epoxy plate, then will contain coil epoxy plate coiling fiberglass
Skeleton（410）On, by multichannel order magnetic field correction coil（406）With adjustment skeleton（404）Connected in bolt mode, for protecting
Demonstrate,prove each coil position relation and bonding strength.
3. the nuclear magnetic resonance for laboratory according to claim 2 superconducting magnet it is characterised in that：Described 60K
The cold screen of magnet（3）Termination is provided with end casing（301）, the cold screen of described 60K magnet（3）Inside enclose and end casing（301）On offer recessed
Groove（302）, described groove（302）Set gap spacing as 0.5 ~ 1.5mm；Described patchboard（408）Made using epoxy plate, institute
State patchboard（408）It is arranged at 4K barrel（4）Interior bottom, for arranging superconducting switch, superconducting joint and pressure regulating heating device
（409）.
4. the nuclear magnetic resonance for laboratory according to claim 3 superconducting magnet it is characterised in that：Described 60K
The cold screen of magnet（3）Made using aluminum material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610816164.0A CN106449003A (en) | 2016-09-09 | 2016-09-09 | Superconducting magnet for magnetic resonance imaging of laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610816164.0A CN106449003A (en) | 2016-09-09 | 2016-09-09 | Superconducting magnet for magnetic resonance imaging of laboratory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106449003A true CN106449003A (en) | 2017-02-22 |
Family
ID=58168298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610816164.0A Withdrawn CN106449003A (en) | 2016-09-09 | 2016-09-09 | Superconducting magnet for magnetic resonance imaging of laboratory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106449003A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994298A (en) * | 2019-03-21 | 2019-07-09 | 中国科学院合肥物质科学研究院 | A kind of labyrinth structure for the cold screen of fusion facility |
| CN113764152A (en) * | 2021-09-15 | 2021-12-07 | 宁波健信核磁技术有限公司 | Superconducting magnet cryogenic system |
| CN114496458A (en) * | 2022-03-08 | 2022-05-13 | 奥泰医疗系统有限责任公司 | Coil skeleton structure of conduction cooling superconducting magnet |
| CN118098751A (en) * | 2024-04-20 | 2024-05-28 | 西安聚能超导磁体科技有限公司 | Superconducting magnet winding device for nuclear waste treatment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1834682A (en) * | 2005-03-18 | 2006-09-20 | 通用电气公司 | Systems, methods and apparatus of an actively shielded superconducting magnet drift compensation coil |
| CN101202142A (en) * | 2006-11-17 | 2008-06-18 | 株式会社日立制作所 | Superconductive magnet device and magnetic resonance imaging apparatus |
| JP4871311B2 (en) * | 2008-02-26 | 2012-02-08 | 株式会社日立製作所 | Nuclear magnetic resonance apparatus, magnetic resonance imaging apparatus, and magnetic resonance analyzer |
-
2016
- 2016-09-09 CN CN201610816164.0A patent/CN106449003A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1834682A (en) * | 2005-03-18 | 2006-09-20 | 通用电气公司 | Systems, methods and apparatus of an actively shielded superconducting magnet drift compensation coil |
| CN101202142A (en) * | 2006-11-17 | 2008-06-18 | 株式会社日立制作所 | Superconductive magnet device and magnetic resonance imaging apparatus |
| JP4871311B2 (en) * | 2008-02-26 | 2012-02-08 | 株式会社日立製作所 | Nuclear magnetic resonance apparatus, magnetic resonance imaging apparatus, and magnetic resonance analyzer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109994298A (en) * | 2019-03-21 | 2019-07-09 | 中国科学院合肥物质科学研究院 | A kind of labyrinth structure for the cold screen of fusion facility |
| CN113764152A (en) * | 2021-09-15 | 2021-12-07 | 宁波健信核磁技术有限公司 | Superconducting magnet cryogenic system |
| CN114496458A (en) * | 2022-03-08 | 2022-05-13 | 奥泰医疗系统有限责任公司 | Coil skeleton structure of conduction cooling superconducting magnet |
| CN118098751A (en) * | 2024-04-20 | 2024-05-28 | 西安聚能超导磁体科技有限公司 | Superconducting magnet winding device for nuclear waste treatment |
| CN118098751B (en) * | 2024-04-20 | 2024-06-25 | 西安聚能超导磁体科技有限公司 | Superconducting magnet winding device for nuclear waste treatment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102136337B (en) | Highfield high uniformity nuclear magnetic resonance superconducting magnet system | |
| CN106449003A (en) | Superconducting magnet for magnetic resonance imaging of laboratory | |
| CN101118798B (en) | Superconducting magnet apparatus and magnetic resonance imaging apparatus | |
| US8204563B2 (en) | Superconducting magnet system for generating high homogeneity and high magnetic field | |
| US5936498A (en) | Superconducting magnet apparatus and magnetic resonance imaging system using the same | |
| US8570127B2 (en) | High magnetic field superconducting magnet system with large crossing warm bore | |
| US9666344B2 (en) | Superconducting magnet system for head imaging | |
| JP4950135B2 (en) | Heat pipe cooled superconducting magnet with ceramic winding | |
| Wang et al. | A superconducting magnet system for whole-body metabolism imaging | |
| CN103035352B (en) | Biplanar open-type magnetic resonance imaging superconducting magnet system | |
| CN103845057B (en) | A kind of magnetic machine for magnetic resonance imaging system | |
| Warner | Ultra-high field magnets for whole-body MRI | |
| CN202471941U (en) | Testing device providing low-temperature and magnetic field environment | |
| CN101839943A (en) | Resistance measurement device of conduction cooling type superconduction adapter | |
| CN206293236U (en) | One kind is used for whole body nuclear magnetic resonance imaging super high field superconducting magnet | |
| CN105263197B (en) | A kind of uniform no magnet heater for magnetic resonance gyroscope instrument | |
| CN106449002B (en) | One kind is used for whole body nuclear magnetic resonance imaging super high field superconducting magnet | |
| JP2013021324A (en) | Superconducting magnet device and magnetic resonance image system | |
| CN106449001A (en) | Ultra-high-field and high-uniformity superconducting magnet for magnetic resonance imaging of small animals | |
| CN206134407U (en) | A a superelevation high homogeneity superconducting magnet for toy magnetic resonance imaging | |
| US7271590B2 (en) | MRI magnet apparatus for vertically and circularly suppressing the magnetic fringe field | |
| US20220082209A1 (en) | Cryostat devices for magnetic resonance imaging and methods for making | |
| Wang et al. | Design, construction and performance testing of a 1.5 T cryogen-free low-temperature superconductor whole-body MRI magnet | |
| Lee et al. | Low-noise magnetoencephalography system cooled by a continuously operating reliquefier | |
| CN103021619B (en) | Cryogenic cooling system with wicking structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 463000 Jiefang Road, Yicheng District, Henan, Zhumadian, 28 Applicant after: Ge Yuanyuan Address before: 511400 Panyu District, Guangdong, Garden Road, No. 19, No. Applicant before: Ge Yuanyuan |
|
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170222 |