CN205562776U - Magnetic resonance apparatus - Google Patents
Magnetic resonance apparatus Download PDFInfo
- Publication number
- CN205562776U CN205562776U CN201620286888.4U CN201620286888U CN205562776U CN 205562776 U CN205562776 U CN 205562776U CN 201620286888 U CN201620286888 U CN 201620286888U CN 205562776 U CN205562776 U CN 205562776U
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- China
- Prior art keywords
- shimming
- locking device
- box
- magnetic resonance
- locking
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- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
The utility model relates to a magnetic resonance apparatus, it includes bench coil support device and shimming box, bench coil support device is equipped with the passageway of acceping the shimming box, be equipped with a locking device on the shimming box, be equipped with the 2nd locking device on the passageway, under the effect in magnetic resonance apparatus magnetic field, a locking device and the 2nd locking device compress tightly together so that the shimming box is fixed on the bench coil support device. The utility model discloses a magnetic resonance apparatus makes a locking device and the 2nd locking device fix under the effect in magnetic resonance apparatus magnetic field and is in the same place through setting up a locking device and the 2nd locking device to play and make shimming box simple to operate, technological effect that the fixity is good.
Description
[technical field]
This utility model relates to a kind of magnetic resonance equipment, particularly relates 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 being such as 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 has certain rule, if applying exterior magnetic field, these small magnets will be rearranged 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 referred to as positive longitudinal axis, the above-mentioned direction being antiparallel to the exterior magnetic field magnetic line of force is referred to as negative longitudinal axis；Atomic nucleus only has longitudinal magnetization component, and this longitudinal magnetization component not only has direction but also have amplitude.The atomic nucleus being 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, produces 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 being such as 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 has certain rule, if applying exterior magnetic field, these small magnets will be rearranged 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 referred to as positive longitudinal axis, the above-mentioned direction being antiparallel to the exterior magnetic field magnetic line of force is referred to as negative longitudinal axis；Atomic nucleus only has longitudinal magnetization component, and this longitudinal magnetization component not only has direction but also have amplitude.The atomic nucleus being 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, produces 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 torr box (shimming box), in the shimming groove that Z axis is axially disposed between gradient coil and magnet, the uniformity of main field is carried out certain correction.Passive shimming is the best 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 the most also can get loose in use, causes shimming box to move, and then causes Magnetic field inhomogeneity.
[utility model content]
In order to solve problems of the prior art, this utility model provides a kind of magnetic resonance equipment with shimming box easy for installation, that stationarity is good.
This utility model solves prior art problem and 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 optimal technical scheme of the present utility model: described first locking device includes that ferromagnetic material, described second locking device are the groove being formed on passage.
According to optimal technical scheme of the present utility model: described first locking device and the second locking device are positioned at the centre position of bench coil support device.
According to optimal technical scheme of the present utility model: described shimming box passes in the first locking device.
According to optimal technical scheme of the present utility model: its airbag also including wrapping up the first locking device and can be to the aerating device of air bag inflator.
According to optimal technical scheme of the present utility model: the thickness h 1 of described first locking device is less than the thickness h 2 of shimming box.
According to optimal technical scheme of the present utility model: described first locking device includes ferromagnetic material.
Magnetic resonance equipment of the present utility model is by arranging the first locking device and the second locking device, make the first locking device and the second locking device be fixed together under the effect in magnetic resonance equipment magnetic field, make, 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 the present utility model cross-sectional cut-away schematic diagram when not installing shimming box.
Fig. 2 is longitudinal section cross-sectional schematic during passive shimming device of the present utility model installation shimming box.
Fig. 3 is the enlarged drawing in Fig. 2 at A.
Fig. 4 is the schematic diagram of this utility model the second embodiment.
[detailed description of the invention]
Below in conjunction with accompanying drawing, technical solutions of the utility model are described in detail:
Referring to shown in Fig. 1 to Fig. 3, this utility model 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.It is arranged such, 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 being formed on passage 10.Under the effect in magnetic resonance equipment magnetic field, the first locking device 3 produces outside power F, drives the first locking device 3 to move up, and clamping is on groove (the second locking device) 11.First locking device 3 and groove the second locking device 11 coordinate for inclined-plane, under the effect of power F, are possible to prevent shimming box 2 to move in the axial direction.Owing to, in the case of having magnetic field, power F exists always, it is possible to shimming box 2 is firmly fixed position 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 utility model, and the outside of the first locking device 3 is provided with airbag 4, and airbag 4 can be inflated by aerating device 5.In the case of airbag 4 is inflated, shimming box 2 can be made just to 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 to more easily in passage 10, 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 to combine concrete optimal technical scheme further detailed description of the utility model, it is impossible to assert that of the present utility model being embodied as is confined to these explanations.For this utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, it is also possible to make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
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), and its feature exists
In, described shimming box (2) is provided with the first locking device (3), and described passage (10) is provided with
Two locking devices (11), under the effect in magnetic resonance equipment magnetic field, the first locking device (3) and
Two locking devices (11) are pressed together so that shimming box (2) is fixed to bench coil support device (1)
On.
Magnetic resonance equipment the most according to claim 1, it is characterised in that: described first locking dress
Putting (3) and include ferromagnetic material, described second locking device (11) is for being formed on passage (10)
Groove.
Magnetic resonance equipment the most according to claim 1, it is characterised in that: described first locking dress
Put (3) and the second locking device (11) is positioned at the centre position of bench coil support device (1).
Magnetic resonance equipment the most according to claim 1, it is characterised in that: described shimming box (2)
Pass in the first locking device (3).
Magnetic resonance equipment the most according to claim 1, it is characterised in that: it also includes wrapping up
The airbag (4) of one locking device (3) and the aerating device (5) airbag (4) can inflated.
Magnetic resonance equipment the most according to claim 5, it is characterised in that: described first locking dress
Put the thickness h 1 thickness h 2 less than shimming box (2) of (3).
Magnetic resonance equipment the most according to claim 6, it is characterised in that: described first locking dress
Put (3) and include ferromagnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620286888.4U CN205562776U (en) | 2016-04-02 | 2016-04-02 | Magnetic resonance apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620286888.4U CN205562776U (en) | 2016-04-02 | 2016-04-02 | Magnetic resonance apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205562776U true CN205562776U (en) | 2016-09-07 |
Family
ID=56810122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620286888.4U Expired - Fee Related CN205562776U (en) | 2016-04-02 | 2016-04-02 | Magnetic resonance apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205562776U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699922A (en) * | 2016-04-02 | 2016-06-22 | 苏州科技学院 | Magnetic resonance equipment |
| CN110088641A (en) * | 2016-12-14 | 2019-08-02 | 皇家飞利浦有限公司 | The support construction of gradient coil assembly for MRI |
-
2016
- 2016-04-02 CN CN201620286888.4U patent/CN205562776U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699922A (en) * | 2016-04-02 | 2016-06-22 | 苏州科技学院 | Magnetic resonance equipment |
| CN110088641A (en) * | 2016-12-14 | 2019-08-02 | 皇家飞利浦有限公司 | The support construction of gradient coil assembly for MRI |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20180402 |