CN107064842A - A kind of flat gradient coil and preparation method thereof - Google Patents
A kind of flat gradient coil and preparation method thereof Download PDFInfo
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- CN107064842A CN107064842A CN201710232456.4A CN201710232456A CN107064842A CN 107064842 A CN107064842 A CN 107064842A CN 201710232456 A CN201710232456 A CN 201710232456A CN 107064842 A CN107064842 A CN 107064842A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000010146 3D printing Methods 0.000 claims abstract description 45
- 230000004888 barrier function Effects 0.000 claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 18
- 239000003822 epoxy resin Substances 0.000 claims description 17
- 229920000647 polyepoxide Polymers 0.000 claims description 17
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- 239000007769 metal material Substances 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 10
- 238000009826 distribution Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000000110 selective laser sintering Methods 0.000 claims description 4
- 239000000084 colloidal system Substances 0.000 claims description 3
- 238000010894 electron beam technology Methods 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 230000010412 perfusion Effects 0.000 claims description 2
- 238000007639 printing Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 229910000679 solder Inorganic materials 0.000 abstract description 2
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 5
- 238000002595 magnetic resonance imaging Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
Classifications
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- 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
- G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
- G01R33/3852—Gradient amplifiers; means for controlling the application of a gradient magnetic field to the sample, e.g. a gradient signal synthesizer
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
A kind of flat gradient coil and preparation method thereof.Described a kind of flat gradient coil, by a pair of subcoils symmetrical above and below（7）Composition, each subcoil（7）X-ray circle is followed successively by from the inside to the outside（1）, Z coils（3）, Y coils（2）And shielded coil（4）, and it is arranged on x-ray circle（1）, Y coils（2）, Z coils（3）And shielded coil（4）The insulating barrier of surrounding（5）, the linearity with enhancing gradient magnetic, the characteristics of increasing dischargeable capacity, the thickness of reduction gradient coil, increase vertical open space；A kind of preparation method of flat gradient coil, including 3D printing one-shot forming all gradient coil assembly and insulating barrier（5）, then assemble and encapsulating, also with elimination solder joint heating, the characteristics of improving producing efficiency.
Description
Technical field
The present invention relates to magnetic resonance imaging（MRI）The gradient coil field of system, more particularly to a kind of flat gradient line
Circle and preparation method thereof technical field.
Background technology
Gradient coil is one of critical piece of MRI system, and main function is the gradient magnetic for producing three orthogonal directions
Carry out space orientation, phase code and frequency coding to MRI signal, performance indications mainly include gradient strength, the magnetic field linearity,
Dischargeable capacity, gradient fields switching rate and eddy current problem, the quality of its performance directly influence MRI image taking speed and quality.
The making of existing flat board gradient coil mainly has two ways：Rectangular copper wire coiling and copper coin cutting.Flat board gradient
Coil shape it is irregular, rectangular copper wire coiling should not be used.All there is the external connection of gradient coil in both modes, external
Wire needs to be welded, and not only makes complicated, and weld resistance becomes big, and easily heating influences gradient coil performance.Copper
Plate cutting technique also needs to consider the processing of outermost turn coil, the linearity of the coil influences gradient fields after cutting, so as to reduce
Dischargeable capacity.The making of plate coil and the connection of external wire turn into problem.
The content of the invention
To solve the problem of above-mentioned background technology is present, the present invention provides a kind of flat gradient coil, solved existing
Technology plate coil external wire makes the problem of complicated, influence coil performance and high heat production, while increasing gradient coil has
Imitate volume.
To achieve these goals, the present invention uses following technical scheme：
A kind of flat gradient coil, is made up of, each subcoil is followed successively by x-ray from the inside to the outside a pair of subcoils symmetrical above and below
Circle, Z coils, Y coils and shielded coil, and the insulating barrier being arranged on around x-ray circle, Y coils, Z coils and shielded coil.
Preferably, described x-ray circle, Y coils, Z coils and shielded coil are the copper ring shape knot that broadens of Spiral distribution
Structure；Described insulating barrier is filled in the own backlash of x-ray circle, Y coils, Z coils and shielded coil, and x-ray circle, Y coils, Z
In gap between coil and shielded coil so that keep fixing between described x-ray circle, Y coils, Z coils and shielded coil
Relative distance, described insulating barrier is provided with the plane where Z coils and imported for x-ray circle, Y coils, Z coils and shielded coil
With the through hole of extraction, described insulating barrier is epoxide resin material.
Connect preferably, described x-ray circle, Y coils, Z coils and shielded coil respectively extend an external wire
Head, a gradient amplifier joint and inner lead, described external wire joint and gradient amplifier joint is flat copper
Cyclic structure, is connected by inner lead with x-ray circle, Y coils, Z coils and shielded coil；It is X, Y that described Z coils, which are provided with,
The central through hole that the inner lead of coil is placed；Described x-ray circle, Y coils, Z coils and shielded coil is connect by external wire
Head connection outer lead, realizes the electrical connection with x-ray circle symmetrical above and below, Y coils, Z coils and shielded coil, described X
The gradient amplifier joint that coil, Y coils, Z coils and shielded coil pass through is connected with gradient amplifier.
Preferably, described x-ray circle, Y coils, Z coils and shielded coil, described external wire joint are described
Gradient amplifier joint, and described inner lead are respectively variform one-time formed overall copper component；It is described
X-ray circle, Y coils, the external wire joint and gradient amplifier joint of Z coils and shielded coil, and described inside leads
Line is the special red copper material of metal 3D printing.
A kind of preparation method of flat gradient coil of the present invention, comprises the following steps：
Step one, according to x-ray circle, the external wire joint and gradient amplifier joint of x-ray circle, and x-ray circle inner lead
Preset model, in flat support structure, using metal material 3D printing technique one-shot forming, the 3D printing technique bag used
Include selective laser sintering（SLS）, electron beam melting etc. be applied to the 3D printing technique of metal；Further according to x-ray circle itself between
Gap preset model, using Yuanping City's board supporting structure and x-ray circle as new supporting construction, using epoxide resin material 3D printing technique one
Secondary profiled insulation layer, the 3D printing technique used includes selective laser sintering（SLS）And stereolithography apparatus（SLA）
Deng；
Step 2, according to Y coils, the inner lead of the external wire joint and gradient amplifier joint of Y coils, and Y coils
Preset model, in flat support structure, using metal material 3D printing one-shot forming；It is pre- further according to the own backlash of Y coils
If model, using Yuanping City's board supporting structure and Y coils as new supporting construction, using epoxide resin material 3D printing technique once into
Type insulating barrier；
Step 3, according to Z coils, the inner lead of the external wire joint and gradient amplifier joint of Z coils, and Z coils
Preset model, in flat support structure, using metal material 3D printing one-shot forming；It is pre- further according to the own backlash of Z coils
If model, using Yuanping City's board supporting structure and Z coils as new supporting construction, using epoxide resin material 3D printing technique once into
Type insulating barrier；
Step 4, according to shielded coil, the external wire joint and gradient amplifier joint of shielded coil, and shielded coil
Inner lead preset model, in flat support structure, using metal material 3D printing one-shot forming；Further according to shielded coil
Own backlash preset model, using Yuanping City's board supporting structure and shielded coil as new supporting construction, using epoxide resin material 3D
Printing technique one-shot forming insulating barrier；
Step 5, after above-mentioned step completes gradient coil all component by 3D printing, all component is assembled,
And the gap perfusion insulating materials molding for epoxy resin between x-ray circle, Y coils, Z coils and shielded coil is a sub-line
Circle, specific assembling and process for filling colloid flow, can use existing technological process, specifically repeat no more；
Step 6, similar flow makes another subcoil, specifically repeated no more；
Step 7, is connected a pair of subcoils by outer lead, and a pair of subcoils are arranged in open magnet, and along opening
Formula magnet center line is symmetrical above and below.
The beneficial effect brought using above-mentioned technical proposal：
The present invention by directly using 3D printing technique, the overall conductive coil of direct 3D printing one-shot forming and its external lead
Line, it is to avoid between coil and external wire, between external wire and external wire between external wire and the gradient amplifier
The problem of complicated, solder joint generates heat is made in the manufacturing process of joint, Production Time is saved, improves the linear of gradient magnetic
Degree.
The present invention uses 3D printing technique, and the favorable repeatability that gradient coil makes, performance is stable, it is adaptable to which batch is made
Make, and then improve producing efficiency.
The present invention removes external wire layer, the thickness of gradient coil is reduced, so as to increase by rational structure design
Vertical open space, increases dischargeable capacity.
Brief description of the drawings
Fig. 1 is a kind of flat gradient coil structures schematic diagram of the present invention.
Fig. 2 is a kind of partial enlarged drawing of flat gradient coil of the present invention.
Fig. 3 is the x-ray circle plane outspread drawing of an embodiment of the invention.
Fig. 4 is the Y coil plane expanded views of an embodiment of the invention.
Fig. 5 is the Y coil schematic diagrames of an embodiment of the invention.
The partial enlarged drawing that Fig. 6 is in Fig. 5 I.
The partial enlarged drawing that Fig. 7 is in Fig. 5 II.
The partial enlarged drawing that Fig. 8 is in Fig. 5 III.
Fig. 9 is the Z coil plane expanded views of an embodiment of the invention.
Figure 10 is the shielded coil plane outspread drawing of an embodiment of the invention.
Figure 11 is the shielded coil schematic diagram of an embodiment of the invention.
The partial enlarged drawing that Figure 12 is in Figure 11 I.
The partial enlarged drawing that Figure 13 is in Figure 11 II.
Figure 14 is a kind of subcoil radial section sectional view of flat gradient coil of the present invention.
The partial enlarged drawing that Figure 15 is in Figure 14 I.
The partial enlarged drawing that Figure 16 is in Figure 14 II.
The partial enlarged drawing that Figure 17 is in Figure 14 III.
In figure：1st, x-ray circle；2nd, Y coils；3rd, Z coils；4th, shielded coil；5th, insulating barrier；6th, outer lead；7th, subcoil；
8th, open magnet；11st, the external wire joint of x-ray circle；12nd, the gradient amplifier joint of x-ray circle；13rd, the inside of x-ray circle is led
Line；21st, the external wire joint of Y coils；22nd, the gradient amplifier joint of Y coils；23rd, the inner lead of Y coils；31st, Z lines
The external wire joint of circle；32nd, the gradient amplifier joint of Z coils；33rd, the inner lead of Z coils；34th, Z hub of a spools lead to
Hole；41st, the external wire joint of shielded coil；42nd, the gradient amplifier joint of shielded coil；43rd, the inside of shielded coil is led
Line.
Embodiment
More clearly from recognize in order to which the technical characteristic to the present invention, objects and advantages have, below refering to accompanying drawing, to this hair
Bright technical scheme is described in detail.
As depicted in figs. 1 and 2, a kind of flat gradient coil of the present invention, described flat gradient coil is arranged on one
In individual open magnet 8, centre is imaging region（DSV）, including along open magnet center line a pair of sub-lines symmetrical above and below
Circle 7, described a pair of subcoils 7 are connected with each other by outer lead 6, and described subcoil 7 includes setting gradually from the inside to the outside
X-ray circle 1, Z coils 3, Y coils 2 and shielded coil 4, and be arranged on around x-ray circle 1, Y coils 2, Z coils 3 and shielded coil 4
Insulating barrier 5.
As shown in Fig. 2 a kind of flat gradient coil of the present invention, described insulating barrier 5 is filled in x-ray circle, Y coils, Z lines
In the own backlash of circle and shielded coil, and gap between x-ray circle, Y coils, Z coils and shielded coil so that described
Fixed relative distance is kept between x-ray circle 1, Y coils 2, Z coils 3 and shielded coil 4, described insulating barrier 5 is in Z coils institute
Plane be provided with the through hole that imports and draw for x-ray circle, Y coils, Z coils and shielded coil, described insulating barrier 5 is epoxy
Resin material.
As shown in figure 3, a kind of x-ray circle 1 of flat gradient coil of the present invention is the copper cyclic structure that broadens of Spiral distribution,
X-ray circle 1 itself leaves the gap of filling insulating barrier 5, for the insulation and fixation between conductive coil；X-ray circle 1 extends one
External wire joint 11 and a gradient amplifier joint 12；Wire 13 is the inner lead of x-ray circle.
As shown in Figure 4 and Figure 5, a kind of Y coils 2 of flat gradient coil of the present invention are the copper ring shape that broadens of Spiral distribution
Structure, Y coils 2 itself leave the gap of filling insulating barrier 5, for the insulation and fixation between conductive coil；Y coils 2 extend
Go out an external wire joint 21 and a gradient amplifier joint 22；Wire 23 is the inner lead of Y coils.
As indicated in figure 5 and figure 14, the electric current of Y coils 2 is in the gradient amplifier joint 22 of Z coil aspects by initially entering,
X-ray circle place aspect is flowed into by reserved hole, by the inner lead 23 for belonging to Y coils 2 of aspect where x-ray circle, by reserving
Hole flow into and enter aspect where Z coils, then by reserved hole flow into x-ray circle where aspect, by the category of aspect where x-ray circle
In the inner lead 23 of Y coils 2, the aspect of Y coils 2 is flowed into by reserved hole, after Y coils 2, flowed into by reserved hole in Z
The external wire joint 21 of coil aspect is exported.
In addition, the current direction of other coils is similar, it will not be repeated here.
As shown in figure 9, a kind of Z coils 3 of flat gradient coil of the present invention are the copper cyclic structure that broadens of Spiral distribution,
Z coils 3 itself leave the gap of filling insulating barrier 5, for the insulation and fixation between conductive coil；Z coils 3 extend one
External wire joint 31 and a gradient amplifier joint 32；Wire 33 is the inner lead of Z coils, the central through hole of Z coils 3
34 be that the pre- of X, Y coil inside wire 31,32 interspaces.
As shown in Figure 10 and Figure 11, a kind of shielded coil 4 of flat gradient coil of the present invention broadening for Spiral distribution
Copper cyclic structure, shielded coil 4 itself leaves the gap of filling insulating barrier 5, for the insulation and fixation between conductive coil；Screen
Cover coil 4 and extend an external wire joint 41 and a gradient amplifier joint 42；Wire 43 is the inside of shielded coil
Wire.
As shown in Fig. 3, Fig. 4, Fig. 9 and Figure 10, described external wire joint 11,21,31,41 and gradient amplifier joint
12nd, 22,32,42 be flat copper cyclic structure, described external wire joint 11,21,31,41 and gradient amplifier joint
12nd, 22,32,42 it is connected with x-ray circle 1, Y coils 2, Z coils 3 and shielded coil 4 by inner lead 13,23,33,43.Institute
X-ray circle 1, Y coils 2, Z coils 3 and the shielded coil 4 stated, described external wire joint 11,21,31,41, described gradient
Amplifier joint 12,22,32,42, and described inner lead 13,23,33,43 are respectively variform one-shot forming
Overall copper component, described x-ray circle 1, Y coils 2, Z coils 3 and shielded coil 4, described external wire joint 11,21,
31st, 41 and gradient amplifier joint 12,22,32,42, and described inner lead 13,23,33,43 is metal 3D printing
Special red copper material.
As shown in figure 1, described x-ray circle 1, Y coils 2, Z coils 3 and shielded coil 4 by external wire joint 11,21,
31st, 41 connection outer lead 7, realizes the electrical connection with x-ray circle 1 symmetrical above and below, Y coils 2, Z coils 3 and shielded coil 4,
The gradient amplifier joint 12,22,32,42 that described x-ray circle 1, Y coils 2, Z coils 3 and shielded coil 4 passes through is put with gradient
Big device connection.
A kind of preparation method of flat gradient coil of the present invention, comprises the following steps：
Step one, according to x-ray circle 1, the external wire joint 11 and gradient amplifier joint 12 of x-ray circle 1, and with the phase of x-ray circle 1
The preset model of inner lead 13 even, structure as shown in Figure 3 saves as STL formatted files as preset model, inputs 3D printing
Machine, in flat support structure, using metal material 3D printing technique one-shot forming, the 3D printing technique used includes selection
Property is laser sintered（SLS）, electron beam melting（EBM）Deng the 3D printing technique suitable for metal；
Further according to the own backlash preset model of x-ray circle 1, with Yuanping City's board supporting structure and x-ray circle 1 for new supporting construction, adopt
With epoxide resin material 3D printing technique one-shot forming insulating barrier 5, the 3D printing technique used includes selective laser sintering
（SLS）And stereolithography apparatus（SLA）Deng；
Step 2, according to Y coils 2, the external wire joint 21 and gradient amplifier joint 22 of Y coils 2, and with the phase of Y coils 2
The preset model of inner lead 23 even, structure as shown in Figure 5 saves as STL formatted files as preset model, inputs 3D printing
Machine, in flat support structure, using metal material 3D printing one-shot forming；
Further according to the own backlash preset model of Y coils 2, with Yuanping City's board supporting structure and Y coils 2 for new supporting construction, adopt
With epoxide resin material 3D printing technique one-shot forming insulating barrier 5；
Step 3, according to Z coils 3, the external wire joint 31 and gradient amplifier joint 32 of Z coils 3, and with the phase of Z coils 3
The preset model of inner lead 33 even, structure as shown in Figure 9 saves as STL formatted files as preset model, inputs 3D printing
Machine, in flat support structure, using metal material 3D printing one-shot forming；
Further according to the own backlash preset model of Z coils 3, with Yuanping City's board supporting structure and Z coils 3 for new supporting construction, adopt
With epoxide resin material 3D printing technique one-shot forming insulating barrier 5；
Step 4, according to shielded coil 4, the external wire joint 41 and gradient amplifier joint 42 of shielded coil 4, and with screen
The connected preset model of inner lead 43 of coil 4 is covered, structure as shown in figure 11 saves as STL formatted files as preset model,
3D printer is inputted, in flat support structure, using metal material 3D printing one-shot forming；
Further according to the own backlash preset model of shielded coil 4, with Yuanping City's board supporting structure and shielded coil 4 for new support knot
Structure, using epoxide resin material 3D printing technique one-shot forming insulating barrier 5；
Step 5, after above-mentioned step completes gradient coil all component by 3D printing, all component is assembled
A subcoil 7 is shaped to, and gap irrigates insulating materials ring between x-ray circle 1, Y coils 2, Z coils 3 and shielded coil 4
Oxygen tree fat, specific assembling and process for filling colloid flow, can use existing technological process, specifically repeat no more；
Step 6, similar flow makes another subcoil 7, specifically repeated no more；
Step 7, is connected a pair of subcoils 7 by outer lead 6, and a pair of subcoils 7 are arranged in open magnet 8, and edge
The center line of open magnet 8 is symmetrical above and below.
Above-mentioned above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of flat gradient coil, by a pair of subcoils symmetrical above and below（7）Composition, it is characterised in that each subcoil
（7）X-ray circle is followed successively by from the inside to the outside（1）, Z coils（3）, Y coils（2）And shielded coil（4）, and it is arranged on x-ray circle（1）, Y lines
Circle（2）, Z coils（3）And shielded coil（4）The insulating barrier of surrounding（5）.
2. a kind of flat gradient coil according to claim 1, it is characterised in that described x-ray circle（1）, Y coils
（2）, Z coils（3）And shielded coil（4）It is the copper cyclic structure that broadens of Spiral distribution；Described insulating barrier（5）It is filled in X
Coil, Y coils, the own backlash of Z coils and shielded coil, and between x-ray circle, Y coils, Z coils and shielded coil between
In gap so that described x-ray circle（1）, Y coils（2）, Z coils（3）And shielded coil（4）Between keep fixed relative distance,
Described insulating barrier（5）It is provided with what is imported and draw for x-ray circle, Y coils, Z coils and shielded coil in the plane where Z coils
Through hole, described insulating barrier（5）For epoxide resin material.
3. a kind of flat gradient coil according to claim 1, it is characterised in that described x-ray circle（1）, Y coils
（2）, Z coils（3）And shielded coil（4）Respectively extend an external wire joint（11、21、31、41）, a gradient put
Big device joint（12、22、32、42）And inner lead（13、23、33、43）, described external wire joint（11、21、31、41）
With gradient amplifier joint（12、22、32、42）It is flat copper cyclic structure, passes through inner lead（13、23、33、43）With
X-ray circle, Y coils, Z coils and shielded coil connection；Described Z coils（3）Provided with the inner lead for X, Y coil（13、23）
The central through hole of placement（34）；Described x-ray circle（1）, Y coils（2）, Z coils（3）And shielded coil（4）Pass through external wire
Joint（11、21、31、41）Connect outer lead（6）, realize and x-ray circle, Y coils, Z coils and shielded coil symmetrical above and below
Electrical connection, described x-ray circle（1）, Y coils（2）, Z coils（3）And shielded coil（4）The gradient amplifier joint passed through
（12、22、32、42）It is connected with gradient amplifier.
4. a kind of flat gradient coil according to claim 3, it is characterised in that described x-ray circle（1）, Y coils
（2）, Z coils（3）And shielded coil（4）, described external wire joint（11、21、31、41）, described gradient amplifier connects
Head（12、22、32、42）, and described inner lead（13、23、33、43）Respectively to be variform one-time formed whole
Body copper component；Described x-ray circle（1）, Y coils（2）, Z coils（3）And shielded coil（4）External wire joint（11、21、
31、41）With gradient amplifier joint（12、22、32、42）, and described inner lead（13、23、33、43）It is metal 3D
The special red copper material of printing.
5. a kind of preparation method of flat gradient coil, it is characterised in that comprise the following steps：
Step one, according to x-ray circle（1）, the external wire joint of x-ray circle（11）With gradient amplifier joint（12）, and x-ray circle
Inner lead（13）Preset model, in flat support structure, using metal material 3D printing technique one-shot forming, is used
3D printing technique include selective laser sintering（SLS）, electron beam melting（EBM）Deng the 3D printing technique suitable for metal；
Further according to x-ray circle（1）Own backlash preset model, with Yuanping City's board supporting structure and x-ray circle（1）For new supporting construction, adopt
With epoxide resin material 3D printing technique one-shot forming insulating barrier（5）, the 3D printing technique used include selective laser burn
Knot（SLS）And stereolithography apparatus（SLA）Deng；
Step 2, according to Y coils（2）, the external wire joint of Y coils（21）With gradient amplifier joint（22）, and Y coils
Inner lead（23）Preset model, in flat support structure, using metal material 3D printing one-shot forming；Further according to Y lines
Circle（2）Own backlash preset model, with Yuanping City's board supporting structure and Y coils（2）For new supporting construction, using epoxy resin
Material 3D printing technique one-shot forming insulating barrier（5）；
Step 3, according to Z coils（3）, the external wire joint of Z coils（31）With gradient amplifier joint（32）, and Z coils
Inner lead（33）Preset model, in flat support structure, using metal material 3D printing one-shot forming；Further according to Z lines
Circle（3）Own backlash preset model, with Yuanping City's board supporting structure and Z coils（3）For new supporting construction, using epoxy resin
Material 3D printing technique one-shot forming insulating barrier（5）；
Step 4, according to shielded coil（4）, the external wire joint of shielded coil（41）With gradient amplifier joint（42）, with
And the inner lead of shielded coil（43）Preset model, in flat support structure, using metal material 3D printing one-shot forming；
Further according to shielded coil（4）Own backlash preset model, with Yuanping City's board supporting structure and shielded coil（4）For new support knot
Structure, using epoxide resin material 3D printing technique one-shot forming insulating barrier（5）；
Step 5, after above-mentioned step completes gradient coil all component by 3D printing, all component is assembled,
And in x-ray circle（1）, Y coils（2）, Z coils（3）And shielded coil（4）Between gap perfusion insulating materials molding for epoxy resin
For a subcoil（7）, it is specific to assemble and process for filling colloid flow, existing technological process can be used, is specifically repeated no more；
Step 6, similar flow makes another subcoil（7）, specifically repeat no more；
Step 7, passes through outer lead（6）By a pair of subcoils（7）Connection, a pair of subcoils（7）Installed in open magnet
（8）On, and along open magnet（8）Center line is symmetrical above and below.
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| CN201710232456.4A CN107064842A (en) | 2017-04-11 | 2017-04-11 | A kind of flat gradient coil and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109613459A (en) * | 2018-12-06 | 2019-04-12 | 厦门大学 | The micro-fluidic plane gradient coil of superconducting pulse nuclear magnetic resonance chemical analyser and mounting bracket |
| CN111665466A (en) * | 2020-08-07 | 2020-09-15 | 山东奥新医疗科技有限公司 | Roller type engraving processing method of gradient coil |
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| CN109613459A (en) * | 2018-12-06 | 2019-04-12 | 厦门大学 | The micro-fluidic plane gradient coil of superconducting pulse nuclear magnetic resonance chemical analyser and mounting bracket |
| US11740303B2 (en) | 2019-11-29 | 2023-08-29 | Institute Of Electrical Engineering, Chinese Academy Of Sciences | Method of designing a high shielding gradient coil for a planar superconducting magnetic resonance imaging system and gradient coil thereof |
| CN111665466A (en) * | 2020-08-07 | 2020-09-15 | 山东奥新医疗科技有限公司 | Roller type engraving processing method of gradient coil |
| CN112462310A (en) * | 2020-10-16 | 2021-03-09 | 电子科技大学 | Device and method for detecting and compensating gradient eddy current based on inductance coil |
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