CN201004083Y - RF coil device - Google Patents
RF coil device Download PDFInfo
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- CN201004083Y CN201004083Y CNU2007201033864U CN200720103386U CN201004083Y CN 201004083 Y CN201004083 Y CN 201004083Y CN U2007201033864 U CNU2007201033864 U CN U2007201033864U CN 200720103386 U CN200720103386 U CN 200720103386U CN 201004083 Y CN201004083 Y CN 201004083Y
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- coil
- coil device
- radio frequency
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Abstract
The utility model relates to a radio frequency coil device for the medical nuclear magnetic resonance imaging, in particular to a rotatable ring radio frequency coil device used for the small animal, comprising a coil bracket(1) and at least one ring coil(2), which is characterized in that the coil bracket(1) is rotatablely arranged on a fixing component(6) which is for fixing the whole radio frequency coil device on a checking bed(7). The utility model is able to rotate the above radio frequency coil, and the self magnetic field of the spiral coil is also able to rotate to the place vertical to the horizontal main magnetic field, making the adopting of the spiral coil in the high field strength resonance scan device is available; besides, being used in matching with the surface coil, the spiral coil further improves the signal-noise ration in the attention zone.
Description
Technical field
The utility model relates to a kind of coil device that is used for the medical nmr imaging, especially for the rotating toroidal radio frequency coil device of meiofauna.
Background technology
In the pet medical treatment, need sometimes to carry out magnetic resonance imaging to little shape animal.In Physiologic Studies, toy such as white mouse etc. also as research object by imaging.Toy will be placed in the magnetic field of high-field magnetic resonance scanister during imaging, it has the main field Bo of horizontal direction, and field intensity can reach 1.5 teslas (T) or higher usually, so that obtain enough signal to noise ratio (S/N ratio)s to form image clearly.For the special radio-frequency coil of animal specialized designs also needs to guarantee high signal to noise ratio (S/N ratio).The main field Bo that in the high-field magnetic resonance scanister, has horizontal direction, spiral winding can't use because the magnetic direction of self is parallel with main field, thereby most toy radio-frequency coils have to adopt birdcage coils or surface coils, but the shortcoming of this coil is that signal to noise ratio (S/N ratio) is not high.Spiral winding generally is used in low the open type magnetic resonance scanning device, and this equipment has the main field of vertical direction, and field intensity is at 0.2-0.4T.Self magnetic direction of spiral winding is vertical mutually with the main field direction, and electric wire can center on body to be detected, and these have all improved signal to noise ratio (S/N ratio).Though once being arranged, document inquired into (Med.Phys.30.6, Hanjoerg Graf, June 2003,1241-1245) in the magnetic field of level, adopt a spiral winding, toy is carried out Magnetic resonance imaging, but wherein only used a coil and a data acquisition channel, be provided with a pickup coil in this coil one side, induction receives the radiofrequency signal of spiral winding, and sends this signal to system and further handle.In the document, a data acquisition channel is only arranged, signal to noise ratio (S/N ratio) is still undesirable.Also not mentioning spiral winding in this article can rotate in magnetic field, with convenient toy is handled.
The content of utility model
The purpose of this utility model provides a kind of toroidal radio frequency coil device that is used for toy, can use in the main field in the horizontal direction, and have higher signal to noise ratio (S/N ratio).
The purpose of this utility model is to realize by following scheme: a kind of coil device, comprise: a coil brace, at least one toroid winding, it is characterized in that: described coil brace is installed in rotation on the fixture, and described fixture is fixed on whole coil device on the examination couch.
According to an aspect of the present utility model, rotating installation between described coil brace and the described fixture is achieved in that sets up a support column, the one end is fixedlyed connected with described coil brace, its other end inserts in the circular hole of moulding in advance of described fixture rotationally, and the axis in the vertical direction in this hole extends.
According to another aspect of the present utility model, rotating installation between described coil brace and the described fixture is achieved in that described coil brace has a thrust vertically downward, and this thrust is installed in rotation in the described fastener apertures seat.In the seat of hole bearing can be set as required.
Rotating any mounting means between described coil brace and the described fixture should guarantee, makes the slewing area of described coil brace be at least 80 °.
According to another aspect of the present utility model, described toroid winding is selected from least a of single coil, spiral winding and Helmholtz (Helmholtz) coil pair.In order further to improve the local signal to noise ratio (S/N ratio) of region-of-interest, except toroid winding, also be provided with a pair of surface coils on the described coil brace.
Coil device of the present utility model and existing toy coil compare, and signal to noise ratio (S/N ratio) increases significantly, and imaging is more clear.Even in the horizontal main field of high-field magnetic resonance scanister, also can use spiral winding, thereby generate excellent uniform receiving sensitivity.Coil brace rotatable is designed to before the scanning, among and handle toy afterwards convenience be provided.
Description of drawings
Fig. 1 is the synoptic diagram of an embodiment of coil device of the present utility model.
Fig. 2 is the working state schematic representation of Fig. 1 embodiment.
Fig. 3 is the synoptic diagram of another embodiment of radio-frequency coil of the present utility model, has adopted spiral winding and surface coils to cooperate.
Embodiment
Fig. 1 represents the synoptic diagram of an embodiment of radio-frequency coil of the present utility model, this coil device comprises: a coil brace 1 and a single toroid winding 2, fixedly connected with the upper end of a support column 5 in the bottom of coil brace 1, this support column 5 is cylindrical in the lower end at least, this columniform lower end is inserted in the pre-processed circular hole (not shown) of a fixture 6 rotationally, the axis in the vertical direction of this circular hole extends, and diameter is bigger slightly than the diameter of the lower end of support column 5.Fixture 6 is polymeric material plates, coil 2 is housed on the one surface, and another facing surfaces is essentially a plane, is used for contacting with the upper surface of sick bed 7.A dopey toy is placed on the inside of columnar coil brace 1, waits for scanning imagery.
The duty of the coil device of Fig. 2 presentation graphs 1.Schematically shown the frame 8 of a high-field magnetic resonance scanning device among the figure, the central tool of frame 8 another can be for the passage of sick bed 7 turnover.What particularly point out is that this equipment has the main field Bo of a horizontal direction.Coil device of the present utility model is placed on the sick bed 7, and described fixture 6 is placed in the upper surface of sick bed 7 abreast, and both longitudinal centre lines are substantially parallel.Begin before the scanning, described fixture 6 is fixed together with any suitable mechanism earlier with sick bed 7, and as an example, stop pin or flexible band are highly suitable for this purpose.In the initial preparatory stage, the longitudinal axis of described coil brace 1 is parallel with main field Bo direction, and all is level.Toy is placed on the preparation of doing necessity on the sick bed 7, and for example anesthesia then, is placed to animal in the cavity of described coil brace 1, puts stable.In order to scan, coil brace 1 need be rotated at least 80 degree now, preferably 90 spend, and the longitudinal axis of coil brace 1 just is changed to vertical with it from the direction that is parallel to main field Bo like this.Correspondingly, self the direction of magnetic field B 1 of toroid winding 2 is also perpendicular to the main field of level, signal to noise ratio (S/N ratio) the best of this position.Then, sick bed 7 advances coil device sent into together with toy and begins scanning in the passage of frame 8.The signal that described toroid winding 2 receives sends system to by lead, is used for image reconstruction.
When needed, can also turn to behind the best angle locking at once to described coil brace 1 together with toroid winding 2, they are stabilized on this optimum position.As an example, can adopt pin-and-hole to cooperate, perhaps lock-screw waits and realizes locking.
Fig. 3 has shown another embodiment of coil device of the present utility model, and among this embodiment, identical parts adopt identical label to represent, and difference has been to adopt different coils.As shown in Figure 3, present embodiment has adopted spiral winding 21, and in order further to improve signal to noise ratio (S/N ratio), except that spiral winding 21, also is mounted with a pair of surface coils 3 on the described coil brace 1.This structure can realize quadrature detection, obviously improves input efficient, also sets up easily simultaneously to be connected with the direct of receiving cable.
According to another embodiment of the present utility model, rotating installation between described coil brace and the described fixture can realize with the not shown mode of another kind: thrust vertically downward of lower surface design of described coil brace, and one-body molded with described coil brace.Thrust is installed in rotation in the described fastener apertures seat.Be provided with in the seat of hole and roll or sliding bearing, be used to make coil brace 1 can to rotate by relative fixed part 6 together with coil 2.
Coil device of the present utility model can make the radio-frequency coil on it rotate, and the magnetic field of spiral winding self also can turn to the position vertical with horizontal main field, makes to adopt spiral winding to become possibility in high field intensity magnetic resonance imaging device.Spiral winding and surface coils are used, and can further improve the signal to noise ratio (S/N ratio) of region-of-interest.
Claims (6)
1. coil device, comprise: a coil brace (1), at least one toroid winding (2), it is characterized in that: described coil brace (1) is installed in rotation on the fixture (6), and described fixture (6) is used for whole coil device is fixed on examination couch (7).
2. coil device as claimed in claim 1, it is characterized in that, one end of a support column (5) is fixedlyed connected with described coil brace (1), and its other end inserts in the circular hole that axis in the vertical direction of described fixture (6) extends rotationally.
3. coil device as claimed in claim 1 is characterized in that, described coil brace (1) has a thrust vertically downward, and this thrust is installed in rotation in the seat of described fixture (6) hole.
4. as claim 2 or 3 described coil devices, it is characterized in that the slewing area of described coil brace (1) is at least 80 °.
5. coil device as claimed in claim 1 is characterized in that, described toroid winding (2) is selected from least a of single coil, spiral winding and Helmholtz coils centering.
6. coil device as claimed in claim 1 is characterized in that, described coil brace (1) is provided with a pair of surface coils (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201033864U CN201004083Y (en) | 2007-01-30 | 2007-01-30 | RF coil device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201033864U CN201004083Y (en) | 2007-01-30 | 2007-01-30 | RF coil device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201004083Y true CN201004083Y (en) | 2008-01-09 |
Family
ID=39039625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201033864U Expired - Fee Related CN201004083Y (en) | 2007-01-30 | 2007-01-30 | RF coil device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201004083Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841326A (en) * | 2011-06-21 | 2012-12-26 | 陆建平 | Small-size radio frequency coil for experimental animal pancreas |
| CN104698411A (en) * | 2015-02-13 | 2015-06-10 | 江苏麦格思频仪器有限公司 | Multichannel radio frequency coil for open type magnetic resonance imaging system |
| CN101968535B (en) * | 2009-07-28 | 2015-12-16 | 西门子(深圳)磁共振有限公司 | Body coil assembly and utilize body coil assembly to produce the method for radio-frequency field |
| CN105301533A (en) * | 2015-12-08 | 2016-02-03 | 上海辰光医疗科技股份有限公司 | Mouse experiment radiofrequency coil device used for magnetic resonance imaging |
| CN105572611A (en) * | 2016-03-04 | 2016-05-11 | 中国海洋石油总公司 | Static magnetic field nuclear magnetic effect analysis system |
| US9529063B2 (en) | 2011-09-07 | 2016-12-27 | Koninklijke Philips N.V. | MR receive coil platform with selective engagement between receive coil and patient table top |
| CN109521381A (en) * | 2017-09-19 | 2019-03-26 | 西门子(深圳)磁共振有限公司 | Base assembly, radio frequency coil assemblies and the magnetic resonance imaging system of radio-frequency coil |
-
2007
- 2007-01-30 CN CNU2007201033864U patent/CN201004083Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968535B (en) * | 2009-07-28 | 2015-12-16 | 西门子(深圳)磁共振有限公司 | Body coil assembly and utilize body coil assembly to produce the method for radio-frequency field |
| CN102841326A (en) * | 2011-06-21 | 2012-12-26 | 陆建平 | Small-size radio frequency coil for experimental animal pancreas |
| US9529063B2 (en) | 2011-09-07 | 2016-12-27 | Koninklijke Philips N.V. | MR receive coil platform with selective engagement between receive coil and patient table top |
| CN104698411A (en) * | 2015-02-13 | 2015-06-10 | 江苏麦格思频仪器有限公司 | Multichannel radio frequency coil for open type magnetic resonance imaging system |
| CN104698411B (en) * | 2015-02-13 | 2018-06-22 | 江苏麦格思频仪器有限公司 | For the Multi-channel radio-frequency coil of open type magnetic resonance imaging (MRI) system |
| CN105301533A (en) * | 2015-12-08 | 2016-02-03 | 上海辰光医疗科技股份有限公司 | Mouse experiment radiofrequency coil device used for magnetic resonance imaging |
| CN105572611A (en) * | 2016-03-04 | 2016-05-11 | 中国海洋石油总公司 | Static magnetic field nuclear magnetic effect analysis system |
| CN105572611B (en) * | 2016-03-04 | 2018-09-28 | 中国海洋石油集团有限公司 | A kind of magnetostatic field nuclear-magnetism effect analysis system |
| CN109521381A (en) * | 2017-09-19 | 2019-03-26 | 西门子(深圳)磁共振有限公司 | Base assembly, radio frequency coil assemblies and the magnetic resonance imaging system of radio-frequency coil |
| US10890635B2 (en) | 2017-09-19 | 2021-01-12 | Siemens Healthcare Gmbh | Stand assembly for RF coil, RF coil assembly and magnetic resonance imaging system |
| CN109521381B (en) * | 2017-09-19 | 2021-12-31 | 西门子(深圳)磁共振有限公司 | Base assembly of radio frequency coil, radio frequency coil assembly and magnetic resonance imaging system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SIEMENS MINDIT (SHENZHEN) MAGNETIC RESONANCE CO., Free format text: FORMER OWNER: SIEMENS (CHINA) AG Effective date: 20090605 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090605 Address after: Two SIEMENS magnetic resonance garden, Gaoxin District, Shenzhen hi tech Zone, Guangdong, China: 518057 Patentee after: Siemens AG(Shenzhen) Address before: No. 7, South Central Road, Wangjing, Beijing, Chaoyang District: 100102 Patentee before: SIEMENS (China) Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: SIEMENS (CHINA) CO., LTD. Free format text: FORMER OWNER: SIEMENS MAIDITE (SHENZHEN) MAGNETIC RESONANCE CO., LTD. Effective date: 20100525 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518057 SIEMENS MAGNETIC RESONANCE PARK, GAOXIN MIDDLE ROAD 2, MIDDLE AREA OF SHENZHEN HIGH-TECH ZONE, GUANGDONG PROVINCE TO: 100102 NO.7 ZHONGHUAN SOUTH ROAD, WANGJING, CHAOYANG DISTRICT, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100525 Address after: 100102 Beijing, Wangjing, Central South Road, No. 7, No. Patentee after: Simens Co., Ltd. (China) Address before: 518057 two SIEMENS magnetic resonance garden, central high tech Zone, Guangdong, Shenzhen Patentee before: Siemens Mindit (Shenzhen) Magnetic Resonance Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: SIEMENS AKTIENGESELLSCHAFT Free format text: FORMER OWNER: SIEMENS (CHINA) CO., LTD. Effective date: 20110209 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100102 NO.7, MIDDLE RING SOUTH ROAD, WANGJING, CHAOYANG DISTRICT, BEIJING TO: MUNICH, GERMANY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110209 Address after: Munich, Germany Patentee after: Siemens AG Address before: 100102 Beijing, Wangjing, Central South Road, No. 7, No. Patentee before: Simens Co., Ltd. (China) |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 Termination date: 20130130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |