CN202929188U - Multichannel wrist coil - Google Patents
Multichannel wrist coil Download PDFInfo
- Publication number
- CN202929188U CN202929188U CN 201220524870 CN201220524870U CN202929188U CN 202929188 U CN202929188 U CN 202929188U CN 201220524870 CN201220524870 CN 201220524870 CN 201220524870 U CN201220524870 U CN 201220524870U CN 202929188 U CN202929188 U CN 202929188U
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- coil
- wrist
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- hyperchannel
- coil unit
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Abstract
The utility model discloses a multichannel wrist coil, which comprises a plurality of coil units, each coil unit form a measure channel, wherein the wrist coil is divided into a wrist joint part and a palm part, a plurality of coil units are respectively arranged at the wrist joint and the palm part, partial area of the adjacent coil units are overlapped, annular coil units are distributed at the four sides of the wrist joint part; and the annular coil units are distributed at the four sides of the palm part. According to the multichannel wrist coil, a plurality of coils are combined to completely coat the wrist joint and the palm, the partial area of the adjacent coil units are overlapped, the common coupling capacitance can be saved, thereby the large coupling problem between adjacent coil units can be avoided, the signal to noise ratio of the wrist coil is improved, the image uniformity is enhanced, and the parallel imaging acquisition can be supported.
Description
Technical field
The utility model relates to a kind of wrist coil, relates in particular to a kind of hyperchannel wrist coil.
Background technology
Existing wrist coil mostly is eight passage coils, structurally is generally the up and down retractable structure, and the opening and closing place need to adopt the structure such as copper bud to connect to make coil closed.This kind structure can make the resistance of coil increase, and reduces signal noise ratio (snr) of image.Mostly be simple loop shape (ring-type) at coil unit, between coil unit and unit, the modes that share electric capacity that adopt are gone lotus root more in form, as shown in Figure 1, adopt the mode that shares electric capacity to go lotus root between eight coil unit 64a～64h.
Use a large amount of electric capacity because electric capacity goes the mode of lotus root, therefore adopted electric capacity to go the mode of lotus root that the Q value of coil unit is reduced, finally affected signal noise ratio (snr) of image.In addition, the wrist coil volume is little and have almost parallel state of coil unit, and the coupling state between coil unit is unsatisfactory, thereby has further reduced the signal to noise ratio (S/N ratio) of image.Therefore, be necessary the improve signal to noise ratio (S/N ratio) of coil of existing hyperchannel wrist coil.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of hyperchannel wrist coil, can effectively avoid the excessive problem of adjacent windings unit coupling, improves the signal to noise ratio (S/N ratio) of wrist coil, improves uniformity degree of image, supports the parallel imaging collection.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to be to provide a kind of hyperchannel wrist coil, comprise a plurality of coil units, each coil unit forms one and measures passage, wherein, described wrist coil is divided into wrist joint part and palm portion, described wrist joint part and palm portion are respectively arranged with a plurality of coil units, and adjacent coil unit part area is overlapping.
Further, described wrist joint part up and down four sides be distributed with the toroid winding unit.
Further, described palm portion up and down four sides be distributed with the toroid winding unit.
Further, described palm portion is distributed with a pair of saddle-type coil unit at least, wherein I class saddle-type coil unit comprising that combination is set together, the every pair of saddle-type coil unit and an II class saddle-type coil unit.
Further, described I class saddle-type coil unit serve as reasons the side ring shape coil that is arranged on the figure-eight coil on surface level from the surface level near the coil point of crossing, along 180 ° of transverse axis upsets to the position of another annular side symmetry, the final symmetrical structure up and down that forms centered by the coil point of crossing.
Further, the toroid winding edge, both sides that is arranged on the figure-eight coil on surface level is served as reasons along overturning on horizontal axis in described II class saddle-type coil unit, the final left-right symmetric structure that forms centered by the coil point of crossing.
Further, described palm portion is distributed with two pairs of saddle-type coil unit that are arranged side by side.
Further, two adjacent annular coil units that intersect vertically forming section area that bends inwards is overlapping.
Further, the internal diameter that surrounds of described wrist joint part and a plurality of coil units of palm portion is consistent.
Further, the internal diameter that the internal diameter that described a plurality of coil units surround in palm portion surrounds greater than a plurality of coil units of wrist joint part, described wrist coil global shape and human hands shape match.
Further, described wrist joint coil sections number of unit is eight, and described palm portion coil unit number is four.
The utility model contrast prior art has following beneficial effect: the hyperchannel wrist coil that the utility model provides, coat wrist joint and palm after a plurality of coil combination fully, adjacent coil unit part area is overlapping, save shared coupling capacitance, thereby avoid the excessive problem of adjacent windings unit coupling, improve the signal to noise ratio (S/N ratio) of wrist coil, improve uniformity degree of image, support the parallel imaging collection.
Description of drawings
Fig. 1 is existing hyperchannel wrist coil capacitor decoupling schematic diagram;
Fig. 2 is a kind of multi-channel straight cartridge type of the utility model wrist coil structural representation;
Fig. 3 is the another kind of multi-channel straight cartridge type of the utility model wrist coil structural representation;
Fig. 4 is I class saddle-type coil structural representation in Fig. 3;
Fig. 5 is II class saddle-type coil structural representation in Fig. 3;
Fig. 6 is a kind of hyperchannel conformal of the utility model wrist coil structural representation;
Fig. 7 is the another kind of hyperchannel conformal of the utility model wrist coil structural representation;
Fig. 8 is the overlapping decoupling schematic diagram of the adjacent windings of the parallel placement of the utility model;
Fig. 9 is the overlapping decoupling schematic diagram of adjacent windings that the utility model intersects vertically;
Figure 10 is the utility model I class, the overlapping decoupling schematic diagram of II class saddle-type coil.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Fig. 2 is a kind of multi-channel straight cartridge type of the utility model wrist coil structural representation.
See also Fig. 2, the hyperchannel wrist coil that the utility model provides is centered around the wrist surrounding by a plurality of coil units and forms the straight barrel type wrist coil, it is consistent at the internal diameter that a plurality of coil units of wrist joint part and palm portion surround, the straight barrel type wrist coil has been abandoned the structure of up and down folding, adopt the form of up and down one, avoid employing can increase the plug in construction of coil resistance, reduce on the one hand the factor that reduces signal noise ratio (snr) of image, also increased on the other hand the facility of medical worker's operation.In Fig. 2, straight tube shape wrist coil is divided into two joints to coil, and first segment coil unit number is eight, and second section coil unit number is four, and all coils unit all adopts simple loop shape, is toroid winding; First segment coil unit position is corresponding to the wrist joint part, and all the other coil units are corresponding to palm portion, and this kind coil unit distributes all has better imaging effect to wrist joint and palm.Specifically, described wrist joint position downside is distributed with coil unit 1, coil unit 2 and coil unit 3; Upside is distributed with coil unit 5, coil unit 6 and coil unit 7; The left side is distributed with coil unit 8, and the right side is distributed with coil unit 4.Described palm part four sides up and down respectively is distributed with a toroid winding unit, is respectively coil unit 11, coil unit 9, coil unit 12 and coil unit 10.
Another kind of straight tube shape wrist coil is divided into three joints to coil, and wherein first segment adopts simple loop form (toroid winding unit), and second and third nodel line coil unit adopts saddle form (saddle-type coil unit), as shown in Figure 3.the first segment loop A is the wrist joint part, be distributed with eight toroid winding unit, second, three-section coil B and C are palm portion, second section is distributed with I class saddle-type coil unit 13 and II class saddle-type coil unit 14, the 3rd joint is distributed with I class saddle-type coil unit 15 and II class saddle-type coil unit 16, the I class saddle-type coil unit that coil unit 13 and coil unit 15 arrange for pair of parellel, each saddle-type coil unit by a side ring shape coil that is arranged on the figure-eight coil on surface level from the surface level near the coil point of crossing, along 180 ° of transverse axis upsets to the position of another annular side symmetry, final form being symmetrical arranged up and down centered by the coil point of crossing, as shown in Figure 4, the II class saddle-type coil that coil unit 14 and coil unit 16 arrange for pair of parellel, each saddle-type coil unit by the toroid winding edge, both sides that is arranged on the figure-eight coil on surface level along overturning on horizontal axis, final form being symmetrical set centered by the coil point of crossing, as shown in Figure 5.These four coil units all adopt the version of saddle, if these four coil units adopt simple loop form coil unit, to become two pairs of four coil units parallel to each other, coupling between coil unit will be very big relatively, and the coil unit structure of saddle form becomes coil of work with two coils parallel to each other, has avoided the large situation of loop form coil coupling.
The cell distribution of conformal wrist coil and straight tube shape wrist coil are similar, the internal diameter that the internal diameter that a plurality of coil units surround in palm portion surrounds greater than a plurality of coil units of wrist joint part, described conformal wrist coil global shape matches with respect to its shape of straight barrel type wrist coil and human hands shape, and a plurality of coil units are fitted in and form the conformal wrist coil on wrist.The conformal wrist coil due to the adhered shape of hand, kept the structure of up and down folding.Adopt two joints to distribute as shown in Figure 6, adopt three joints to distribute as shown in Figure 7, the concrete distribution situation of coil unit and straight tube shape wrist coil are similar, give unnecessary details no longer one by one at this.
above-mentioned straight barrel type wrist coil and conformal wrist coil all do not have to adopt take the major way of capacitor decoupling cooperation as the coil unit uncoupling, adopt overlapping (overlap) uncoupling mode in conjunction with the coil unit structure of the saddle form major way as the coil unit uncoupling and change into, go lotus root than adopting capacitive way, above-mentioned two kinds of uncoupling modes all realize uncoupling by distribution or the structure of coil unit, do not introduce extra electric capacity, the components and parts such as inductance, therefore can not reduce the Q value of coil unit itself, can not introduce the factor of extra reduction signal noise ratio (snr) of image, thereby make signal noise ratio (snr) of image make moderate progress.
Coil unit part area adjacent in the hyperchannel wrist coil that the utility model provides is overlapping, and specifically the decoupling situation is as shown in Figure 9:
For the toroid winding that be arranged in parallel, adopt the mode uncoupling of overlap, adjacent windings partly staggers overlapping, coil unit 1 and coil unit 2, coil unit 2 and coil unit 3, coil unit 5 and coil unit 6 can adopt method uncoupling shown in Figure 8 between coil unit 6 and coil unit 7.
Overlapping for the adjacent windings unit that the intersects vertically forming section area that bends inwards, as coil unit 4 and adjacent coil unit 3,5, coil unit 8 and adjacent coil unit 1,7.
When coil was 2 whens joint, between palm portion loop type coil unit 9, coil unit 10, coil unit 11, coil unit 12 and wrist joint coil sections unit 1-8, same employing overlap mode uncoupling as shown in Figure 8.
When coil was 3 whens joint, between saddle type coil unit 13, coil unit 14 and coil unit 1-8, the overlapping mode decoupling of employing overlap coil unit area portions as shown in Figure 8.As shown in figure 10, magnetic direction and the main field direction of coil unit 13 and coil unit 14 its generations are orthogonality relation, and the direction that himself produces magnetic field is orthogonality relation each other also, therefore need not decoupling.Uncoupling situation and coil unit 13 between coil unit 15 and coil unit 16, coil unit 14 are identical, are the orthogonality relation decoupling.
In sum, the hyperchannel wrist coil that the utility model provides, be applicable to simultaneously straight barrel type wrist coil and conformal wrist coil, coat wrist joint and palm after a plurality of coil combination fully, and adjacent coil unit part area is overlapping, save shared coupling capacitance, thereby avoid the excessive problem of adjacent windings unit coupling, improve the signal to noise ratio (S/N ratio) of wrist coil.
Although the utility model discloses as above with preferred embodiment; so it is not to limit the utility model; any those skilled in the art; within not breaking away from spirit and scope of the present utility model; when doing a little modification and perfect, therefore protection domain of the present utility model is worked as with being as the criterion that claims were defined.
Claims (11)
1. hyperchannel wrist coil, comprise a plurality of coil units, each coil unit forms one and measures passage, it is characterized in that, described wrist coil is divided into wrist joint part and palm portion, described wrist joint part and palm portion are respectively arranged with a plurality of coil units, and adjacent coil unit part area is overlapping.
2. hyperchannel wrist coil as claimed in claim 1, is characterized in that, described wrist joint part four sides up and down is distributed with the toroid winding unit.
3. hyperchannel wrist coil as claimed in claim 1, is characterized in that, described palm portion four sides up and down is distributed with the toroid winding unit.
4. hyperchannel wrist coil as claimed in claim 1, it is characterized in that, described palm portion is distributed with a pair of saddle-type coil unit at least, wherein I class saddle-type coil unit comprising that combination is set together, the every pair of saddle-type coil unit and an II class saddle-type coil unit.
5. hyperchannel wrist coil as claimed in claim 4, it is characterized in that, described I class saddle-type coil unit serve as reasons the side ring shape coil that is arranged on the figure-eight coil on surface level from the surface level near the coil point of crossing, along 180 ° of transverse axis upsets to the position of another annular side symmetry, the final symmetrical structure up and down that forms centered by the coil point of crossing.
6. hyperchannel wrist coil as claimed in claim 4, it is characterized in that, the toroid winding edge, both sides that is arranged on the figure-eight coil on surface level is served as reasons along overturning on horizontal axis in described II class saddle-type coil unit, the final left-right symmetric structure that forms centered by the coil point of crossing.
7. hyperchannel wrist coil as claimed in claim 4, is characterized in that, described palm portion is distributed with two pairs of saddle-type coil unit that are arranged side by side.
8. hyperchannel wrist coil as claimed in claim 2 or claim 3, is characterized in that, two adjacent annular coil units that intersect vertically forming section area that bends inwards is overlapping.
9. hyperchannel wrist coil as described in claim 1～7 any one, is characterized in that, the internal diameter that described wrist joint part and a plurality of coil units of palm portion surround is consistent.
10. hyperchannel wrist coil as described in claim 1～7 any one, it is characterized in that, the internal diameter that the internal diameter that described a plurality of coil unit surrounds in palm portion surrounds greater than a plurality of coil units of wrist joint part, described wrist coil global shape and human hands shape match.
11. hyperchannel wrist coil as described in claim 1～7 any one is characterized in that, described wrist joint coil sections number of unit is eight, and described palm portion coil unit number is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220524870 CN202929188U (en) | 2012-10-12 | 2012-10-12 | Multichannel wrist coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220524870 CN202929188U (en) | 2012-10-12 | 2012-10-12 | Multichannel wrist coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202929188U true CN202929188U (en) | 2013-05-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220524870 Expired - Lifetime CN202929188U (en) | 2012-10-12 | 2012-10-12 | Multichannel wrist coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202929188U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130197A (en) * | 2016-08-31 | 2016-11-16 | 矽力杰半导体技术(杭州)有限公司 | Electric energy reception antenna and the wearable electronic applying it |
| CN106291420A (en) * | 2016-09-26 | 2017-01-04 | 苏州众志医疗科技有限公司 | Wrist coil for magnetic resonance imaging system |
-
2012
- 2012-10-12 CN CN 201220524870 patent/CN202929188U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130197A (en) * | 2016-08-31 | 2016-11-16 | 矽力杰半导体技术(杭州)有限公司 | Electric energy reception antenna and the wearable electronic applying it |
| CN106291420A (en) * | 2016-09-26 | 2017-01-04 | 苏州众志医疗科技有限公司 | Wrist coil for magnetic resonance imaging system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170323 Address after: Room C, building 202-207, No.1 building, six industrial road, Nanshan District, Guangdong, Shenzhen, China Patentee after: SHENZHEN UNITED IMAGING HEALTHCARE Co.,Ltd. Address before: 201815 Shanghai City, Jiading District Jiading Industrial Zone No. 1180 Building 8 Hing Road Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |
|
| CX01 | Expiry of patent term |