CN105699922A - Magnetic resonance equipment - Google Patents
Magnetic resonance equipment Download PDFInfo
- Publication number
- CN105699922A CN105699922A CN201610217870.3A CN201610217870A CN105699922A CN 105699922 A CN105699922 A CN 105699922A CN 201610217870 A CN201610217870 A CN 201610217870A CN 105699922 A CN105699922 A CN 105699922A
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- CN
- China
- Prior art keywords
- locking device
- shimming
- box
- magnetic resonance
- resonance equipment
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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
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
The invention relates to magnetic resonance equipment including a stair coil supporting device and a shimming box. The magnetic resonance equipment is provided with a channel accommodating the shimming box. The shimming box is provided with a first locking device is arranged on the shimming box. The channel is provided with a second locking device. Under the effect of the magnetic field of the magnetic resonance equipment, the first locking device and the second locking device are pressed together so as to enable the shimming box to be fixed on the stair coil supporting device. According to the invention, the first locking device and the second locking device are arranged and the first locking device and the second locking device are fixed together under the effect of the magnetic resonance equipment, so that a technical effect of mounting the shimming box conveniently and fixing the shimming box firmly is achieved.
Description
[technical field]
The present invention relates to a kind of magnetic resonance equipment, particularly relate to a kind of magnetic resonance equipment with passive shimming device。
[background technology]
Nuclear magnetic resonance (MagneticResonanceImaging, MRI) is a kind of technology utilizing magnetic resonance phenomenon to carry out imaging。The principle of magnetic resonance phenomenon specifically includes that the atomic nucleus comprising odd number proton, the hydrogen nuclei such as, being widely present in human body, its proton has spin motion, just as a small magnet, and the spin axis of these small magnets does not have certain rule, if applying exterior magnetic field, these small magnets will rearrange by the magnetic line of force of exterior magnetic field, it is specially the both direction being either parallel or anti-parallel to the exterior magnetic field magnetic line of force to arrange, the above-mentioned direction being parallel to the exterior magnetic field magnetic line of force is called positive longitudinal axis, the above-mentioned direction being antiparallel to the exterior magnetic field magnetic line of force is called negative longitudinal axis；Atomic nucleus only has longitudinal magnetization component, and this longitudinal magnetization component not only has direction but also have amplitude。It is in the atomic nucleus in exterior magnetic field by radio frequency (RadioFrequency, the RF) pulse excitation of characteristic frequency, makes these nuclear spin axiss deviate positive longitudinal axis or negative longitudinal axis, produce resonance, here it is magnetic resonance phenomenon。After the above-mentioned nuclear spin axis being excited deviates positive longitudinal axis or negative longitudinal axis, this atomic nucleus is just provided with component of transverse magnetisation。Nuclear magnetic resonance (MagneticResonanceImaging, MRI) is a kind of technology utilizing magnetic resonance phenomenon to carry out imaging。
The principle of magnetic resonance phenomenon specifically includes that the atomic nucleus comprising odd number proton, the hydrogen nuclei such as, being widely present in human body, its proton has spin motion, just as a small magnet, and the spin axis of these small magnets does not have certain rule, if applying exterior magnetic field, these small magnets will rearrange by the magnetic line of force of exterior magnetic field, it is specially the both direction being either parallel or anti-parallel to the exterior magnetic field magnetic line of force to arrange, the above-mentioned direction being parallel to the exterior magnetic field magnetic line of force is called positive longitudinal axis, the above-mentioned direction being antiparallel to the exterior magnetic field magnetic line of force is called negative longitudinal axis；Atomic nucleus only has longitudinal magnetization component, and this longitudinal magnetization component not only has direction but also have amplitude。It is in the atomic nucleus in exterior magnetic field by radio frequency (RadioFrequency, the RF) pulse excitation of characteristic frequency, makes these nuclear spin axiss deviate positive longitudinal axis or negative longitudinal axis, produce resonance, here it is magnetic resonance phenomenon。After the above-mentioned nuclear spin axis being excited deviates positive longitudinal axis or negative longitudinal axis, this atomic nucleus is just provided with component of transverse magnetisation。
Existing method for shimming includes actively shimming (active shimming) and passive shimming (passive shimming)。Passive shimming fork claims passive shimming, it is that the soft magnetic material such as silicon steel utilizing high saturation high magnetic permeability is as shimming sheet, it is arranged in holder box (shimming box), is axially disposed in the shimming groove between gradient coil and magnet along Z axis and the uniformity of main field is carried out certain correction。Passive shimming is very good for the shimming effect of higher order term, but if the uniformity in naked magnetic field is poor, that is accomplished by a lot of shimming sheet and carrys out shimming。Existing shimming fixes installation generally by screw, installs trouble。Meanwhile, screw also can get loose sometimes in use, causes that shimming box moves, and then causes Magnetic field inhomogeneity。
[summary of the invention]
In order to solve problems of the prior art, the invention provides a kind of magnetic resonance equipment with shimming box easy for installation, that stationarity is good。
This invention address that prior art problem be employed technical scheme comprise that a kind of magnetic resonance equipment, it includes bench coil support device and shimming box, described bench coil support device is provided with the passage housing shimming box, described shimming box is provided with the first locking device, described passage is provided with the second locking device, under the effect in magnetic resonance equipment magnetic field, the first locking device and the second locking device are pressed together so that shimming box is fixed on bench coil support device。
According to the preferred technical solution of the present invention: described first locking device includes ferromagnetic material, described second locking device is the groove formed on passage。
According to the preferred technical solution of the present invention: described first locking device and the second locking device are positioned at the centre position of bench coil support device。
According to the preferred technical solution of the present invention: described shimming box passes in the first locking device。
According to the preferred technical solution of the present invention: its also include parcel the first locking device airbag and can to the aerating device of air bag inflator。
According to the preferred technical solution of the present invention: the thickness h 1 of described first locking device is less than the thickness h 2 of shimming box。
According to the preferred technical solution of the present invention: described first locking device includes ferromagnetic material。
The magnetic resonance equipment of the present invention, by arranging the first locking device and the second locking device, makes the first locking device and the second locking device be fixed together under the effect in magnetic resonance equipment magnetic field, makes, to play, the technique effect that shimming box is easy for installation, stationarity is good。
[accompanying drawing explanation]
Fig. 1 is the passive shimming device of present invention cross-sectional cut-away schematic diagram when not installing shimming box。
Fig. 2 is longitudinal section cross-sectional schematic during the passive shimming device installation shimming box of the present invention。
Fig. 3 is the enlarged drawing at A place in Fig. 2。
Fig. 4 is the schematic diagram of second embodiment of the invention。
[detailed description of the invention]
Below in conjunction with accompanying drawing, technical solution of the present invention is described in detail:
Referring to shown in Fig. 1 to Fig. 3, the present invention is a kind of magnetic resonance equipment, and it includes bench coil support device 1 and shimming box 2。Bench coil support device 1 is provided with the passage 10 housing shimming box 2。Shimming box 2 is provided with the first locking device 3, and passage 10 is provided with the second locking device 11, under the effect in magnetic resonance equipment magnetic field, and the first locking device 3 and the second locking device 11 is pressed together so that shimming box 2 is fixed on bench coil support device 1。So arrange, shimming box 2 convenience can be made, be securely mounted to bench coil support device 1。
First locking device 3 includes ferromagnetic material, and the second locking device 11 is the groove formed on passage 10。Under the effect in magnetic resonance equipment magnetic field, the first locking device 3 produces an outside power F, drives the first locking device 3 to move up, and clamping is to groove (the second locking device) 11。First locking device 3 and groove 11 coordinate for inclined-plane, under the effect of power F, it is possible to prevent shimming box 2 from moving in the axial direction。Owing to when there being magnetic field, power F exists always, it is possible to shimming box 2 is firmly fixed very much。
First locking device 3 and the second locking device 11 are positioned at the centre position of bench coil support device 1。Shimming box 2 passes in the first locking device 3。
Fig. 4 is the second embodiment of the present invention, and the outside of the first locking device 3 is provided with airbag 4, and airbag 4 can be inflated by aerating device 5。When airbag 4 is inflated, it is possible to make shimming box 2 just position in passage 10。After having good positioning, under the effect of magnetic field force F, shimming box 2 is fixed in passage 10。In order to make shimming box 2 be installed in passage 10 more easily, the thickness h 1 of the first locking device 3 is less than the thickness h 2 of shimming box 2。In the present embodiment, the first locking device 3 includes ferromagnetic material。
Above content is in conjunction with concrete optimal technical scheme further description made for the present invention, it is impossible to assert that specific embodiment of the invention is confined to these explanations。For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, it is also possible to make some simple deduction or replace, protection scope of the present invention all should be considered as belonging to。
Claims (7)
1. a magnetic resonance equipment, it includes bench coil support device (1) and shimming box (2), described bench coil support device (1) is provided with the passage (10) housing shimming box (2), it is characterized in that, described shimming box (2) is provided with the first locking device (3), described passage (10) is provided with the second locking device (11), under the effect in magnetic resonance equipment magnetic field, first locking device (3) and the second locking device (11) are pressed together so that shimming box (2) is fixed in bench coil support device (1)。
2. magnetic resonance equipment according to claim 1, it is characterised in that: described first locking device (3) includes ferromagnetic material, and described second locking device (11) is the groove formed on passage (10)。
3. magnetic resonance equipment according to claim 1, it is characterised in that: described first locking device (3) and the second locking device (11) are positioned at the centre position of bench coil support device (1)。
4. magnetic resonance equipment according to claim 1, it is characterised in that: described shimming box (2) is traverse in the first locking device (3)。
5. magnetic resonance equipment according to claim 1, it is characterised in that: its airbag (4) also including parcel the first locking device (3) and the aerating device (5) airbag (4) can inflated。
6. magnetic resonance equipment according to claim 5, it is characterised in that: the thickness h 1 of described first locking device (3) is less than the thickness h 2 of shimming box (2)。
7. magnetic resonance equipment according to claim 6, it is characterised in that: described first locking device (3) includes ferromagnetic material。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610217870.3A CN105699922A (en) | 2016-04-02 | 2016-04-02 | Magnetic resonance equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610217870.3A CN105699922A (en) | 2016-04-02 | 2016-04-02 | Magnetic resonance equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105699922A true CN105699922A (en) | 2016-06-22 |
Family
ID=56218439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610217870.3A Pending CN105699922A (en) | 2016-04-02 | 2016-04-02 | Magnetic resonance equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105699922A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545959A (en) * | 2009-04-23 | 2009-09-30 | 苏州工业园区朗润科技有限公司 | Magnetic field regulating method and set of NMR imaging equipment |
| US20090267607A1 (en) * | 2008-04-24 | 2009-10-29 | Michael Eberler | Arrangement to adjust the homogeneity of a basic magnetic field |
| CN201387479Y (en) * | 2009-03-12 | 2010-01-20 | 西门子迈迪特(深圳)磁共振有限公司 | Gradient coil |
| CN101916640A (en) * | 2009-03-23 | 2010-12-15 | 英国西门子公司 | The apparatus and method that are used for the magnetic field shimming |
| CN103454605A (en) * | 2012-05-30 | 2013-12-18 | 西门子(深圳)磁共振有限公司 | Shimming regulation device for superconducting magnets |
| CN103576113A (en) * | 2012-07-26 | 2014-02-12 | 西门子(深圳)磁共振有限公司 | Superconducting magnet and shimming device and method thereof |
| CN105324678A (en) * | 2013-06-21 | 2016-02-10 | 皇家飞利浦有限公司 | Shim system for a magnetic resonance hybrid scanner |
| CN205562776U (en) * | 2016-04-02 | 2016-09-07 | 苏州科技学院 | Magnetic resonance apparatus |
-
2016
- 2016-04-02 CN CN201610217870.3A patent/CN105699922A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090267607A1 (en) * | 2008-04-24 | 2009-10-29 | Michael Eberler | Arrangement to adjust the homogeneity of a basic magnetic field |
| CN201387479Y (en) * | 2009-03-12 | 2010-01-20 | 西门子迈迪特(深圳)磁共振有限公司 | Gradient coil |
| CN101916640A (en) * | 2009-03-23 | 2010-12-15 | 英国西门子公司 | The apparatus and method that are used for the magnetic field shimming |
| CN101545959A (en) * | 2009-04-23 | 2009-09-30 | 苏州工业园区朗润科技有限公司 | Magnetic field regulating method and set of NMR imaging equipment |
| CN103454605A (en) * | 2012-05-30 | 2013-12-18 | 西门子(深圳)磁共振有限公司 | Shimming regulation device for superconducting magnets |
| CN103576113A (en) * | 2012-07-26 | 2014-02-12 | 西门子(深圳)磁共振有限公司 | Superconducting magnet and shimming device and method thereof |
| CN105324678A (en) * | 2013-06-21 | 2016-02-10 | 皇家飞利浦有限公司 | Shim system for a magnetic resonance hybrid scanner |
| CN205562776U (en) * | 2016-04-02 | 2016-09-07 | 苏州科技学院 | Magnetic resonance apparatus |
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Application publication date: 20160622 |