CN206223952U - A kind of MR imaging apparatus and system - Google Patents
A kind of MR imaging apparatus and system Download PDFInfo
- Publication number
- CN206223952U CN206223952U CN201621098912.8U CN201621098912U CN206223952U CN 206223952 U CN206223952 U CN 206223952U CN 201621098912 U CN201621098912 U CN 201621098912U CN 206223952 U CN206223952 U CN 206223952U
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- China
- Prior art keywords
- gradient coil
- imaging apparatus
- screen layer
- superconducting magnet
- gradient
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Abstract
The utility model discloses a kind of MR imaging apparatus and system, including superconducting magnet, gradient coil assembly, the superconducting magnet has the host cavity for axially extending, the gradient coil assembly is arranged in the host cavity, and the inner side of the gradient coil assembly is the scanning chamber for axially extending, the gradient coil assembly includes gradient coil and the screen layer on the outside of gradient coil, the gradient coil is combined with screen layer, and has the cavity for axially extending between the gradient coil and screen layer；MR imaging apparatus of the present utility model and system have relatively low noise.
Description
【Technical field】
The utility model is related to mr imaging technique, and in particular to a kind of MR imaging apparatus and system.
【Background technology】
Magnetic resonance imaging (MRI) equipment is widely used to medical diagnostic field, and its general principle is produced using magnet
Uniform high-intensity magnetic field, in the case where being produced with specific gradient fields from gradient coil, will diagnose the hydrogen atom polarization in subject,
Then radio frequency pulse excitation hydrogen nuclei is launched by radio-frequency coil, causes nuclear resounce, and energy absorption.Stopping radio frequency
After pulse, hydrogen nuclei sends electric signal by CF, and the energy of absorption is discharged, and is received by external receiver
Record, image is obtained after being processed through electronic computer.
Current conventional magnet is superconducting magnet, and it is cylinder shape as radio-frequency coil, gradient coil, all, and substantially
Coaxially.The dimensional orientation of three is：, in innermost layer, in radio-frequency coil outer layer, superconducting magnet is in gradient for gradient coil for radio-frequency coil
Coil outer layer.Hollow cavity is detection space in radio-frequency coil.
The need for due to MRI system, in imaging process, gradient coil is generally passed through fast-changing big alternating current,
It can produce the electromagnetic force of alternation so that gradient coil acutely shakes in magnet bore in the presence of magnet high-intensity magnetic field
It is dynamic, stronger noise is produced, and cause the vibration of miscellaneous part in system.Gradient noise is the main noise source of MRI system,
Often cause the uneasiness and dislike of patient and user.
Current conventional Improving Measurements mainly divide passive noise control, Active noise control and system-level noise control three
Kind.Most common passive noise control method is to allow patient to put on sound isolating earphone, and various acoustical cottons etc. are arranged in system
Material, absorption or the propagation of obstruct noise in communication process；Active noise control then offsets earphone frequently with noise, actively disappears
Subtract MRI noises；System-level noise control is then by optimizing the systematic parameters such as MR scanning sequences, radio frequency, reducing system noise.
【Utility model content】
Technical problem to be solved in the utility model is to provide a kind of MR imaging apparatus and system compared with low noise.
The utility model is to solve the technical scheme that uses of above-mentioned technical problem：A kind of MR imaging apparatus, bag
Superconducting magnet, gradient coil assembly are included, the superconducting magnet has the host cavity for axially extending, the gradient coil assembly peace
In the host cavity, and the inner side of the gradient coil assembly is the scanning chamber for axially extending, the gradient coil set
Part includes gradient coil and the screen layer on the outside of gradient coil, and the gradient coil is combined with screen layer, and described
There is the cavity for axially extending between gradient coil and screen layer.
Optionally, the cross section of the cavity is the ring-type for surrounding gradient coil, and the cavity is evacuated.
Optionally, the gradient coil has a first end, and the screen layer has a first end, and the gradient coil
The first opening between the first end of one end and the screen layer is sealed by colloid.
Optionally, the gradient coil has the second end, and the screen layer has the second end, and the neighbouring gradient coil
The second end and the second end of the screen layer between the second opening at be provided with lid.
Optionally, one or several pads are provided between the lid and the screen layer, several pads include outer
Side pad and inboard washer.
Optionally, the lid, gradient coil are screwed on the end face of superconducting magnet.
Optionally, the also body transmitting coil component including being arranged on the inner surface of screen layer.
Optionally, the also covering including tubular, the covering is located at the inner side of body transmitting coil.
The utility model is to solve the technical scheme that uses of above-mentioned technical problem：A kind of magnetic resonance imaging system, bag
Include MR imaging apparatus, scanning bed component and guide assembly；The MR imaging apparatus include superconducting magnet, gradient coil
Component, the superconducting magnet has the host cavity for axially extending, and the gradient coil assembly is arranged in the host cavity, and
The inner side of the gradient coil assembly is the scanning chamber for axially extending, and the gradient coil assembly includes gradient coil and position
Vacuum cavity on the outside of gradient coil；The scanning bed component includes bed board, matrix, and the bed board can be slided on matrix,
The guide assembly includes guide rail, and the guide rail is arranged in MR imaging apparatus, the matrix only portion of the scanning bed component
Point extend into MR imaging apparatus scanning chamber in, the bed board can be inserted into MR imaging apparatus scanning chamber in and led
Rail is supported.
Optionally, also including one or two support frame being installed on the end face of superconducting magnet, the guide rail is supported
Frame is supported.
The utility model contrast prior art has following beneficial effect：The ladder of MR imaging apparatus of the present utility model
Degree coil outside is cavity, and can be evacuated, in being conducive to the incoming scanning chamber of noise for block gradient coil.
【Brief description of the drawings】
Fig. 1 is the schematic diagram of the MR imaging apparatus of the utility model embodiment；
Fig. 2 is the decomposing schematic representation of Fig. 1；
Fig. 3 is the profile of Fig. 1；
Fig. 4 is the regional area enlarged drawing of Fig. 3；
Fig. 5 is a kind of schematic diagram of magnetic resonance imaging system of the utility model embodiment；
Fig. 6 is scanning bed component and guide assembly schematic diagram in Fig. 5.
【Specific embodiment】
It is understandable to enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, below in conjunction with the accompanying drawings to this
The specific embodiment of utility model is described in detail.Detail is elaborated in the following description in order to fully understand this
Utility model.But the utility model can be implemented with various different from other manner described here, people in the art
Member can do similar popularization in the case of without prejudice to the utility model intension.Therefore the utility model does not receive following public tool
The limitation of body implementation method.
The utility model will be further described with reference to the accompanying drawings and examples.
Fig. 1-4 are referred to, a kind of MR imaging apparatus 100 of the utility model embodiment include：Including superconducting magnet
1st, gradient coil assembly 2, the superconducting magnet has the host cavity 11 for axially extending, and the gradient coil assembly 2 is arranged on
In the host cavity 11, and the inner side of the gradient coil assembly 2 is the scanning chamber 20 for axially extending, the gradient coil set
Part 2 includes gradient coil 21 and the screen layer 22 positioned at the outside of gradient coil 21 (week), the gradient coil 21 and screen layer
22 are combined, and have the cavity 23 for axially extending between the gradient coil 21 and screen layer 22.Superconducting magnet 1 includes ring
The cryostat of tubular and it is arranged in one or several superconducting coils of cryostat.Typically in cryostat
Filling cryogenic media (such as liquid helium) submergence superconducting coil so that superconducting coil keeps low-temperature superconducting state, superconducting coil excitation
The high-intensity magnetic field of stabilization is produced afterwards.
The cross section of the cavity 23 of the gradient coil assembly 2 is the ring-type for surrounding gradient coil, and the cavity is taken out
Vacuum.
Together with the gradient coil 21 is molded with screen layer 22.The gradient coil 21 has first end (left end), institute
Screen layer 22 is stated with first end (left end), and between the first end of the first end of the gradient coil and the screen layer the
One opening 231 is sealed by colloid 221.Screen layer 22 can be for resin material or plastic material etc. easily with the material of colloid 221
In shaping and meet machinery and the material of electrical characteristic.
The gradient coil 21 has the second end (right-hand member), and the screen layer 22 has the second end (right-hand member), and neighbouring institute
State and be provided with lid 8 at the between the second end of gradient coil and the second end of the screen layer second opening 232.
One or several pads, several pads are provided between the lid 8 and the gradient coil 21, screen layer 22
Including outside pad 9 and inboard washer 10.
The lid 8, the screen layer 22 of gradient coil assembly 2 are fixed on the end face of superconducting magnet 1 by screw 12.Can
Conduit and valve are set on lid 8, and the conduit is connected with vavuum pump, is vacuumized cavity 23 by vavuum pump.Cavity 23
Gradient noise can be preferably blocked to enter in scanning chamber 20.
The power line (not shown) of gradient coil 21 also can be connected to external power source by being pre-set at the through hole of lid 8
(not shown), power line needs seal approach through the through hole of lid.
The MR imaging apparatus also include the body transmitting coil component being arranged on the inner surface of screen layer 22.At it
In his embodiment, the terraced transmitting coil component can also be an independent structure, including radio-frequency coil supporting construction and
The electronic components such as copper sheet (bar), electric capacity, inductance, the diode being arranged in radio-frequency coil supporting construction.The present embodiment need not
Extra radio-frequency coil supporting construction, can reduce the overall dimensions (diameter) of magnetic resonance equipment, or can increase scanning chamber
Aperture.
The MR imaging apparatus also covering 7 including tubular, the covering 7 is arranged in scanning chamber 20, and
The covering 7 is located at the inner side of body transmitting coil.
Refer to Fig. 5-6 and combine Fig. 1-4, a kind of magnetic resonance imaging system 200 of the utility model embodiment includes：Magnetic
Resonant device 100, scanning bed component and guide assembly, the scanning bed component include bed board 41, matrix 42, and the bed board 41 can
Slided on matrix 42, the guide assembly includes guide rail 51 and support frame 52, guide rail 51 is arranged in magnetic resonance equipment 100,
Can for example be arranged in scanning chamber 20, the guide rail 51 is axially extended and without departing from 100 liang of axial ends of magnetic resonance equipment.
The support frame 52 that guide rail 51 is installed on the end face of superconducting magnet 1 is supported, and the bed board 41 can vertically be slided on guide rail 51
It is dynamic.The quantity of support frame can be one or two, if using a support frame, need by scanning bed matrix or
Other support meanss carry out Auxiliary support guide rail, if distinguishing supporting guide using two support frames, need not other branch
Support arrangement.Height of the bed board 41 on matrix 42 and scanning bed 41 height on guide rail can be with identical or slightly
Differ, so that scanned object can be scanned in chamber 20 by smoothly feeding.The part of matrix 42 of scanning bed component 4 is prolonged
Stretch into scanning chamber 20.
Although the utility model is disclosed as above with preferred embodiment, so it is not limited to the utility model, any
Those skilled in the art, not departing from spirit and scope of the present utility model, when a little modification and perfect, therefore this can be made
The protection domain of utility model is when by being defined that claims are defined.
Claims (10)
1. a kind of MR imaging apparatus, it is characterised in that：Including superconducting magnet, gradient coil assembly, the superconducting magnet tool
There is the host cavity for axially extending, the gradient coil assembly is arranged in the host cavity, and the gradient coil assembly
Inner side is the scanning chamber for axially extending, and the gradient coil assembly includes gradient coil and the screen on the outside of gradient coil
Layer is covered, the gradient coil is combined with screen layer, and there is the sky for axially extending between the gradient coil and screen layer
Chamber.
2. MR imaging apparatus according to claim 1, it is characterised in that the cross section of the cavity is to surround gradient
The ring-type of coil, and the cavity is evacuated.
3. MR imaging apparatus according to claim 1, it is characterised in that the gradient coil has first end, institute
Stating screen layer has the first opening between first end, and the first end of the first end of the gradient coil and the screen layer logical
Cross colloid sealing.
4. MR imaging apparatus according to claim 1, it is characterised in that the gradient coil has the second end, institute
Screen layer is stated to be opened with second between the second end, and second end and the second end of the screen layer of the neighbouring gradient coil
Lid is provided with mouthful.
5. MR imaging apparatus according to claim 4, it is characterised in that set between the lid and the screen layer
There are one or several pads, several pads include outside pad and inboard washer.
6. MR imaging apparatus according to claim 4, it is characterised in that the lid, gradient coil pass through screw
It is fixed on the end face of superconducting magnet.
7. MR imaging apparatus according to claim 4, it is characterised in that also including being arranged at the inner surface of screen layer
On body transmitting coil component.
8. MR imaging apparatus according to claim 7, it is characterised in that the also covering including tubular, the screening
Shield is located at the inner side of body transmitting coil.
9. a kind of magnetic resonance imaging system, it is characterised in that：Including MR imaging apparatus, scanning bed component and guide assembly；
The MR imaging apparatus include superconducting magnet, gradient coil assembly, and the superconducting magnet has the collecting for axially extending
Chamber, the gradient coil assembly is arranged in the host cavity, and the inner side of the gradient coil assembly axially extends
Scanning chamber, the gradient coil assembly includes gradient coil and the vacuum cavity on the outside of gradient coil；It is described scanning bed
Component includes bed board, matrix, and the bed board can be slided on matrix, and the guide assembly includes guide rail, and the guide rail is arranged in
In MR imaging apparatus, the MR imaging apparatus that extend into of the matrix only part of the scanning bed component are scanned in chamber, institute
State bed board can be inserted into MR imaging apparatus scanning chamber in and by guide supporting.
10. magnetic resonance imaging system according to claim 9, it is characterised in that also including being installed on the end of superconducting magnet
One or two support frame on face, the guide rail is supported by support frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621098912.8U CN206223952U (en) | 2016-09-30 | 2016-09-30 | A kind of MR imaging apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621098912.8U CN206223952U (en) | 2016-09-30 | 2016-09-30 | A kind of MR imaging apparatus and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206223952U true CN206223952U (en) | 2017-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621098912.8U Active CN206223952U (en) | 2016-09-30 | 2016-09-30 | A kind of MR imaging apparatus and system |
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| CN (1) | CN206223952U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023159864A1 (en) * | 2022-02-28 | 2023-08-31 | 合肥泽璞医疗系统有限公司 | Magnetic resonance apparatus |
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2016
- 2016-09-30 CN CN201621098912.8U patent/CN206223952U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023159864A1 (en) * | 2022-02-28 | 2023-08-31 | 合肥泽璞医疗系统有限公司 | Magnetic resonance apparatus |
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Address after: 201807 No. 2258 Chengbei Road, Jiading Industrial Zone, Jiading District, Shanghai. Patentee after: Shanghai Lianying Medical Technology Co., Ltd Address before: 201807 No. 2258 Chengbei Road, Jiading Industrial Zone, Jiading District, Shanghai. Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |