CN202889295U - Resonance wave trap and magnetic resonance imaging system provided with same - Google Patents
Resonance wave trap and magnetic resonance imaging system provided with same Download PDFInfo
- Publication number
- CN202889295U CN202889295U CN 201220561152 CN201220561152U CN202889295U CN 202889295 U CN202889295 U CN 202889295U CN 201220561152 CN201220561152 CN 201220561152 CN 201220561152 U CN201220561152 U CN 201220561152U CN 202889295 U CN202889295 U CN 202889295U
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- magnetic resonance
- imaging system
- resonance imaging
- inductance
- resonant trap
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Abstract
The utility model provides a resonance wave trap for a magnetic resonance imaging system, and the resonance wave trap comprises an inductor and a plurality of capacitors, wherein a plurality of capacitors are connected in series; a plurality of capacitors connected in series are connected in parallel with the inductor; the resonance wave trap further comprises a circuit board; the circuit board is composed of a plurality of plate material layers; a plurality of plate material layers comprise different electrodes; and the plate materials comprising different electrodes form the capacitors. As the capacitors are manufactured by a plurality of plate material layers of the circuit board, the cost of the wave trap is reduced, and simultaneously the original chip capacitors are not needed, so the space of the wave strap is saved; and no capacitors are welded to the outside of the circuit board, thus the resonace wave tray is convenient to install. The utility model further provides a magnetic resonance imaging system equipped with the resonance wave trap.
Description
[technical field]
The utility model relates to the magnetic resonance imaging field, relates in particular to a kind of resonant trap for magnetic resonance imaging.
[background technology]
In magnetic resonance system, sick bed need to use with being connected of radio-frequency coil and load in mixture line, loading in mixture line generally is comprised of one or more radio frequency line, in the actual scanning process, for the demand that cooperates sick bed to move, loading in mixture line need to have certain length, and radio frequency line is longer, and radiofrequency signal is in transmission, will produce common-mode signal, common-mode signal can produce very poor impact to final picture quality, for the common-mode signal that suppresses to produce, generally can take every the distance of 20cm-25cm a trapper to be installed, trapper mainly is by electric capacity, the shunt-resonant circuit that inductance forms is about to load in mixture line or the radio frequency line pitch of the laps is made into inductance, and the copper core is inserted at the inductance center, inductance two is connected on the circuit board, a plurality of electric capacity of series connection are arranged on the circuit board this moment, and shunt-resonant circuit of above-mentioned formation is in work, regulate the copper core at inductance center, so that the inductance that is formed by the wire-wound system of loading in mixture produces resonance, thereby form high impedance, suppress common-mode signal.
What present electric capacity adopted is without the magnetic patch capacitor, during use it is welded on the circuit board, the space that takies is very large, in actual applications, the trapper of terminal amplifier rear end, owing to need to be encapsulated in the container of a small volume, be subject to the impact of patch capacitor, the relatively difficulty that the inductance that installation is formed by the radio frequency line coiling then seems, the Spatial General 6 R that the trapper after finishing of arranging takies is all larger, simultaneously without the magnetic patch capacitor with respect to other electric capacity, price is higher, when large-scale application, the cost of equipment also can correspondingly increase.
[utility model content]
Higher in order to solve above-mentioned trapper price of the prior art, it is large to take up room, and the winding displacement hard problem is necessary to provide a kind of cost lower, small volume, resonant trap easy for installation.
A kind of resonant trap for magnetic resonance imaging system, comprise inductance and a plurality of electric capacity, described a plurality of capacitances in series, the electric capacity of described a plurality of series connection and described inductance in parallel, described resonant trap also comprises a circuit board, described circuit board is made of multi-layered board, includes different electrodes on the described multi-layered board, and the described sheet material that includes Different electrodes consists of described electric capacity.
Optionally, in the described inductance spiral bore is arranged.
Optionally, described resonant trap also comprises the copper core that places described inductance inside, and described copper core has the helicoidal structure supporting with described spiral bore.
Optionally, described resonant trap comprises three electric capacity.
The utility model also provides a kind of magnetic resonance imaging system, it comprises radio-frequency coil, sick bed, the connecting line that connects radio-frequency coil and sick bed, described magnetic resonance imaging system also comprises the resonant trap that is installed on the connecting line, described resonant trap comprises inductance and a plurality of electric capacity, described a plurality of capacitances in series, the electric capacity of described a plurality of series connection and described inductance in parallel, it is characterized in that, described resonant trap also comprises a circuit board, described circuit board is made of multi-layered board, include different electrodes on the described multi-layered board, the described sheet material that includes Different electrodes consists of described electric capacity.
Optionally, described connecting line is made of one or many radio frequency lines.
Optionally, described inductance is that a part of coiling by described connecting line forms.
Optionally, described inductance is that a part of coiling seven circles by described connecting line form.
Optionally, described inductance is that a part of coiling 12 circles by described connecting line form.
Optionally, on the described connecting line a plurality of described resonant trap are arranged.
Optionally, described resonant trap also comprises the copper core that is built in inductance inside.
Optionally, the connecting line of close described radio-frequency coil one end is dispersed into single described radio frequency line, and described resonant trap and described amplifier are installed on the described radio frequency line.
The resonant trap that is used for magnetic resonance imaging system that the utility model provides owing to adopt the multi-layered board of circuit board itself to make electric capacity, has reduced the trapper cost; Simultaneously, do not need patch capacitor originally, the space of having saved trapper; Need at circuit board external welding electric capacity, not install more convenient.
[description of drawings]
Fig. 1 is the structural representation of resonant trap in the utility model;
Fig. 2 is the structural representation of another kind of resonant trap in the utility model;
Fig. 3 is the structural representation of electric capacity in the resonant trap among Fig. 1;
Fig. 4 is the structural representation of spiral bore among Fig. 1;
Fig. 5 is the generalized section of Fig. 1 spiral bore shown in Figure 3;
Fig. 6 is the structural representation of copper core among Fig. 1.
[embodiment]
For above-mentioned purpose of the present utility model, feature and advantage can more be become apparent, below in conjunction with drawings and Examples embodiment of the present utility model is described in detail.
A lot of details have been set forth in the following description so that fully understand the utility model, but the utility model can also adopt other to be different from alternate manner described here and implement, so the utility model is not subjected to the restriction of following public specific embodiment.
Just as described in the background art, in the prior art, the common employing of electric capacity in the resonant trap be without the magnetic patch capacitor, its space that takies is larger, in use, can be subject to corresponding restriction because of different environments for use, such as the connecting line that is used for magnetic resonance system sick bed and radio-frequency coil of describing in the background technology, because connecting line itself is thicker, the inductance volume that coiling forms is just larger, the trapper of terminal amplifier rear end, in the situation that its integral body need to be encapsulated, just can take into account the space of trapper itself, simultaneously without the magnetic patch capacitor with respect to other electric capacity, price is higher, when large-scale application, the cost of equipment also can correspondingly rise, so the utility model provides a kind of cost lower, it is little to take up room, trapper easy for installation.
As shown in Figure 1, resonant trap 10, comprise inductance 20 and a plurality of electric capacity 30, described a plurality of electric capacity 30 series connection, the electric capacity 30 of described a plurality of series connection is in parallel with described inductance 20, and described resonant trap 10 also comprises circuit board 40, and the structure of circuit board 40 as shown in Figure 2, include different electrode 60 on the different layers sheet material 50 of described circuit board 40, the described sheet material 50 that includes Different electrodes 60 consists of described electric capacity 30.
As mentioning in the background technology, the resonant trap that the utility model provides can be used in the magnetic resonance arts, as shown in Figure 1, resonant trap 10 is installed on the radio-frequency coil 110 and the connecting line 70 between the sick bed 120 in the magnetic resonance imaging system, connecting line 70 is comprised of one or more radio frequency line, and preferred, described connecting line is comprised of 12 radio frequency lines, connecting line 70 is outer, and insulating barrier parcel, the inductance 20 of this moment are arranged is that a part of coiling by described connecting line 70 forms.As shown in Figure 2, end (near the part of radio-frequency coil 110) at radio-frequency coil 110 also is equipped with amplifier 130, the every radio frequency line that consists of connecting line 70 scatter, described resonant trap 10 and amplifier 130 all are installed on the every radio frequency line, and this moment, described inductance 20 reality were formed by the part coiling of single radio frequency line exactly.Need to illustrate that the resonant trap 10 that is installed on the every radio frequency line needs use packed by metal casing, to prevent the interference of extraneous magnetic field, electric current or other signals herein.
Described inductance 20 is that a part of coiling by described connecting line 70 forms, preferably, resonant trap 10 at the most close amplifier 130 that is installed on radio-frequency coil 110 1 ends, its inductance 20 is to be enclosed and can be formed by a part of coiling 12 of connecting line 70, and for other resonant trap 10, preferably, the inductance 20 in the resonant trap 10 is formed by a part of coiling seven circles of connecting line 70.Inductance 20 after the coiling moulding be shaped as helical form, there is a spiral bore 80 inductance 20 inside simultaneously, the structure of spiral bore 80 also as shown in Figure 4, Fig. 5 is the cross section structure schematic diagram of spiral bore.Resonant trap 10 also comprises copper core 90, and as shown in Figure 6, copper core 90 has the helicoidal structure supporting with described spiral bore, and copper core 90 can screw in the spiral bore 80.
In the resonant trap 10 on sick bed in magnetic resonance system and the connecting line of radio-frequency coil a plurality of electric capacity 30 are arranged, preferred, adopt three electric capacity.As shown in Figure 2, a plurality of resonant trap 10 are arranged on the connecting line 70, preferred, every 20cm-25cm a resonant trap 10 is installed.
In sum, the resonant trap that is used for magnetic resonance imaging system that the utility model provides owing to adopt the multi-layered board of circuit board itself to make electric capacity, has reduced cost; Simultaneously, do not need patch capacitor originally, the space of having saved; Need at circuit board external welding electric capacity, not install more convenient.
Although the utility model discloses as above with preferred embodiment; so it is not to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; when doing a little modification and perfect, therefore protection range of the present utility model is worked as with being as the criterion that claims were defined.
Claims (12)
1. resonant trap that is used for magnetic resonance imaging system, comprise inductance and a plurality of electric capacity, described a plurality of capacitances in series, the electric capacity of described a plurality of series connection and described inductance in parallel, it is characterized in that described resonant trap also comprises a circuit board, described circuit board is made of multi-layered board, include different electrodes on the described multi-layered board, the described sheet material that includes Different electrodes consists of described electric capacity.
2. the resonant trap for magnetic resonance imaging system as claimed in claim 1 is characterized in that, there is a spiral bore described inductance inside.
3. the resonant trap for magnetic resonance imaging system as claimed in claim 2 is characterized in that, described resonant trap also comprises the copper core that is built in inductance inside, described copper core have can with the supporting helicoidal structure of described inductance spiral bore.
4. the resonant trap for magnetic resonance imaging system as claimed in claim 3 is characterized in that, described resonant trap comprises three electric capacity.
5. magnetic resonance imaging system, it comprises radio-frequency coil, sick bed, the connecting line that connects radio-frequency coil and sick bed, it is characterized in that: described magnetic resonance imaging system also comprises the resonant trap that is installed on the connecting line, described resonant trap comprises inductance and a plurality of electric capacity, described a plurality of capacitances in series, the electric capacity of described a plurality of series connection and described inductance in parallel, it is characterized in that, described resonant trap also comprises a circuit board, described circuit board is made of multi-layered board, include different electrodes on the described multi-layered board, the described sheet material that includes Different electrodes consists of described electric capacity.
6. magnetic resonance imaging system as claimed in claim 5 is characterized in that, described connecting line is made of one or many radio frequency lines.
7. magnetic resonance imaging system as claimed in claim 6 is characterized in that, described inductance is that a part of coiling by described connecting line forms.
8. magnetic resonance imaging system as claimed in claim 7 is characterized in that, described inductance is to be enclosed by a part of coiling seven of described connecting line to form.
9. magnetic resonance imaging system as claimed in claim 7 is characterized in that, described inductance is to be enclosed by a part of coiling 12 of described connecting line to form.
10. magnetic resonance imaging system as claimed in claim 5 is characterized in that, a plurality of described resonant trap are arranged on the described connecting line.
11. magnetic resonance imaging system as claimed in claim 5 is characterized in that, described resonant trap also comprises the copper core that is built in inductance inside.
12. magnetic resonance imaging system as claimed in claim 6, it also comprises amplifier, it is characterized in that the connecting line of close described radio-frequency coil one end is dispersed into single described radio frequency line, and described resonant trap and described amplifier are installed on the described radio frequency line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561152 CN202889295U (en) | 2012-10-30 | 2012-10-30 | Resonance wave trap and magnetic resonance imaging system provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220561152 CN202889295U (en) | 2012-10-30 | 2012-10-30 | Resonance wave trap and magnetic resonance imaging system provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202889295U true CN202889295U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220561152 Expired - Lifetime CN202889295U (en) | 2012-10-30 | 2012-10-30 | Resonance wave trap and magnetic resonance imaging system provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202889295U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576111A (en) * | 2013-11-15 | 2014-02-12 | 厦门大学 | Double-frequency-modulation surface coil |
| CN108281417A (en) * | 2017-12-27 | 2018-07-13 | 苏州中晟宏芯信息科技有限公司 | The manufacturing method of resonant clock circuit and integrated circuit |
| CN109937367A (en) * | 2016-11-23 | 2019-06-25 | 通用电气公司 | Rf coil system for MR imaging |
-
2012
- 2012-10-30 CN CN 201220561152 patent/CN202889295U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576111A (en) * | 2013-11-15 | 2014-02-12 | 厦门大学 | Double-frequency-modulation surface coil |
| CN109937367A (en) * | 2016-11-23 | 2019-06-25 | 通用电气公司 | Rf coil system for MR imaging |
| CN108281417A (en) * | 2017-12-27 | 2018-07-13 | 苏州中晟宏芯信息科技有限公司 | The manufacturing method of resonant clock circuit and integrated circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201815 No. 1180 Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee after: Shanghai Lianying Medical Technology Co.,Ltd. Address before: 201815 No. 1180 Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |
|
| CX01 | Expiry of patent term |