CN102323556A - Carotid artery coil - Google Patents
Carotid artery coil Download PDFInfo
- Publication number
- CN102323556A CN102323556A CN201110217445A CN201110217445A CN102323556A CN 102323556 A CN102323556 A CN 102323556A CN 201110217445 A CN201110217445 A CN 201110217445A CN 201110217445 A CN201110217445 A CN 201110217445A CN 102323556 A CN102323556 A CN 102323556A
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- CN
- China
- Prior art keywords
- coil
- coil unit
- unit
- arteria carotis
- parallel arranged
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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
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/341—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils
- G01R33/3415—Constructional details, e.g. resonators, specially adapted to MR comprising surface coils comprising arrays of sub-coils, i.e. phased-array coils with flexible receiver channels
-
- 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
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
- G01R33/3678—Electrical details, e.g. matching or coupling of the coil to the receiver involving quadrature drive or detection, e.g. a circularly polarized RF magnetic field
Abstract
The invention discloses a carotid artery coil. The carotid artery coil comprises coil units, and is characterized in that at least three coil units in the coil units are arranged in parallel. Three parallel coil units in the coil have a good balance between the SNR (signal to noise ratio) and the penetrating power. A saddle-shaped (or 8-shaped) coil unit can be added in the coil so as to effectively increase the image SNR and uniformity of the coil without influencing other units. The SNR, uniformity and IPAT (information processing aptitude test) effect of the carotid artery coil are obviously superior to those of the existing two-channel coil in commerce.
Description
Technical field
the invention belongs to the magnetic resonance imaging field, are specifically related to a kind of arteria carotis coil.
Background technology
apoplexy always is one of human main causes of death.New medical research shows that mr imaging technique is the most effectively medical means of discerning potential danger fat spot in the arteria carotis at present, can help to find to have the people of risk of stroke.Therefore the imaging of MRI magnetic resonance arteria carotis is to the clinical diagnosis of carotid disease, and it is a technology that haves a great attraction that curative effect is followed the tracks of, and helps to develop novel fat reducing spot medicine.But the arteria carotis imaging also has higher difficulty, and in order to differentiate blood vessel preferably, the shape of tube wall and patch and composition, clinical image also should have the high resolving power of submillimeter level except the sufficiently high signal to noise ratio (S/N ratio) of needs.For this reason; The arteria carotis coil adopts less coil unit (coil element) to be made usually, because generally speaking, though little coil penetration power is dark inadequately; But they can have higher signal to noise ratio (S/N ratio) on the ground near the coil annex, and very high resolution can also be arranged.And arteria carotis just in time is very near from the neck sub-surface, so little surface coils is the primary selection of arteria carotis imaging.Because the arteria carotis imaging needs very high signal to noise ratio (snr) and resolution (Resolution), has certain novelty and difficulty, the product of present clinical practice in this respect and reality also seldom.Now commercial topmost Unit 2 * 2 (elements) arteria carotis coil by about (referring to about neck) two parts form, each part is made up of two coil units (element), like Fig. 1, shown in Figure 2.In order to improve signal to noise ratio (S/N ratio), according to classical mentality of designing, under the shape and big or small certain situation of coil, the number of unit of desirable array coil is many more, and is just high more near the signal noise ratio (snr) of image of antenna, but the image homogeneity of radial direction and penetration power are just poor more.The coil design that also has a kind of Unit 2 * 4 (elements) now, this design also is divided into two parts about two, and every part has four unit (elements), and the coil unit of every part is as shown in Figure 2.But find that behind overtesting though it is higher than the former at the signal noise ratio (snr) of image of blood vessel annex, homogeneity and penetration power obviously are not so good as the coil height of 2 * 2 (elements) of Fig. 1, clinical effectiveness is generally not as the former.
Summary of the invention
the present invention seeks to: the arteria carotis that a kind of homogeneity and penetration power are strong, signal to noise ratio (S/N ratio) is high coil is provided.
technical scheme of the present invention is: a kind of arteria carotis coil, comprise coil unit, and it is characterized in that at least 3 coil unit parallel arranged in the said coil unit.
are further, and said coil comprises the coil unit of 3 parallel arranged and is across in the coil unit of said 3 parallel arranged one cross span coil unit at least.
are further, and the coil unit area of said 3 parallel arranged equates.
are further, and the coil unit of said 3 parallel arranged is a rectangle.
are further, and said cross span coil unit is across the coil unit of said 3 parallel arranged.
are further, and the cross span coil unit is 8 fonts.
Advantage of the present invention is:
1. the coil unit of 3 parallel arranged in the coil have a good balance on signal to noise ratio (S/N ratio) and penetration power.The arrangement of the coil unit of other 3 parallel arranged makes that IPAT (parallel acquisition) technology of magnetic resonance is brought into play more fully, and the IPAT effect obviously is superior to 2 commercial at present passage coils.
follow the coil unit of 3 parallel arranged all to become symmetrical structure across the structure of coil; Any uncoupling measure effect of just well being decoupled can be not need taked, the signal noise ratio (snr) of image and the homogeneity of coil can be under the situation that does not influence other unit, effectively increased.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Fig. 1 is existing arteria carotis coil practical circuit diagram.
Fig. 2 is existing arteria carotis winding wire coil unit distribution plan.
Fig. 3 is existing arteria carotis winding wire coil unit distribution plan.
Fig. 4 arteria carotis winding wire of the present invention coil unit distribution plan.
The test pattern of
the existing arteria carotis coil of Fig. 5 coil signal to noise ratio (S/N ratio).
The test pattern of
the existing arteria carotis coil of Fig. 6 coil signal to noise ratio (S/N ratio).
The test pattern of
Fig. 7 arteria carotis coil of the present invention coil signal to noise ratio (S/N ratio).
Embodiment
embodiment: arteria carotis coil of the present invention, the coil of two parts about comprising, every coil sections have four coil units (elements).Shown in loop construction Fig. 4 of every part; This coil has 4 coil units (elements); Three coil units (three rectangles in left, center, right) parallel arranged wherein, another one coil unit and become the unit of " a 8 " word on the coil unit of 3 parallel arranged.4 coil units of each coil are the 3+1 structure, i.e. the coil unit of 3 parallel arranged (Loop)+1 a cross span coil unit (saddle).The coil unit of 3 parallel arranged (Loop) is arranged (is to arrange to the back side from the front by the human body direction) from left to right, has added 1 cross span coil unit (saddle) in addition, across the coil unit (Loop) of 3 parallel arranged.The coil unit (Loop) of 3 parallel arranged in the coil has a good balance on signal to noise ratio (S/N ratio) and penetration power.The arrangement of the coil unit of other 3 parallel arranged (Loop) makes that IPAT (parallel acquisition) technology of magnetic resonance is brought into play more fully, and the IPAT effect obviously is superior to 2 commercial at present passage coils.The structure of cross span coil unit (Saddle) all becomes symmetrical structure with the coil unit (Loop) of 3 parallel arranged, can not need take just can well be decoupled effect and can effectively increase the signal noise ratio (snr) of image and the homogeneity of coil of any uncoupling measure.The 3+1 loop construction of present embodiment refers to coil unit (Loop)+1 a cross span coil unit (saddle) of 3 parallel arranged; Another one cross span coil unit (saddle) all becomes symmetry with the coil unit (Loop) of 3 parallel arranged, to help the uncoupling of cross span coil unit (saddle) with the coil unit (Loop) of 3 parallel arranged.The coil unit of these 3 parallel arranged (Loop) can not wait by area, and cross span coil unit (saddle) can be across 3 coil units, can be only across wherein some (individual) coil unit, can both realize the present invention.If adopt structure greater than 4 coil units, wherein there are 4 unit to possess above-mentioned 3+1 structure, also can realize the present invention.Coil design of the present invention on the basis of improving the coil signal to noise ratio (S/N ratio), has well been improved the homogeneity and the penetration power of coil.Consider baby's cardiac position in addition, size has certain similarity with adult's arteria carotis, and this coil also can be used as baby's cardiac imaging except being used as into the human artery forms images, and also has good effect.From relatively, can find out tangible signal to noise ratio (S/N ratio) of arteria carotis coil of the present invention and homogeneity advantage like the test pattern of the test pattern of Fig. 5, existing arteria carotis coil signal to noise ratio (S/N ratio) shown in Figure 6 and arteria carotis coil signal to noise ratio (S/N ratio) of the present invention shown in Figure 7.It is as shown in the table to test concrete numerical value:
| Snr | Area1 | Area | 2 | |
|
Area 5 | |
| Fig. 1,2 coil | 1806.7 | 1661.8 | 1064.7 | 994.3 | 651.7 | 616.7 | |
| Fig. 3 coil | 1523.0 | 1398.1 | 907.9 | 851.8 | 559.3 | 536.5 | |
| Fig. 4 coil | 1797.1 | 1769.7 | 1159.2 | 1137.3 | 771.3 | 752.3 |
above embodiment is merely the present invention's a kind of embodiment wherein, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with accompanying claims.
Claims (6)
1. an arteria carotis coil comprises coil unit, it is characterized in that at least 3 coil unit parallel arranged in the said coil unit.
2. arteria carotis coil according to claim 1 is characterized in that, said coil comprises the coil unit of 3 parallel arranged and is across in the coil unit of said 3 parallel arranged one cross span coil unit at least.
3. arteria carotis coil according to claim 2 is characterized in that, the coil unit area of said 3 parallel arranged equates.
4. arteria carotis coil according to claim 3 is characterized in that, the coil unit of said 3 parallel arranged is a rectangle.
5. arteria carotis coil according to claim 4 is characterized in that said cross span coil unit is across the coil unit of said 3 parallel arranged.
6. arteria carotis coil according to claim 5 is characterized in that, the cross span coil unit is 8 fonts.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110217445A CN102323556A (en) | 2011-08-01 | 2011-08-01 | Carotid artery coil |
| PCT/CN2012/079247 WO2013017041A1 (en) | 2011-08-01 | 2012-07-27 | Carotid artery coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110217445A CN102323556A (en) | 2011-08-01 | 2011-08-01 | Carotid artery coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102323556A true CN102323556A (en) | 2012-01-18 |
Family
ID=45451336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110217445A Pending CN102323556A (en) | 2011-08-01 | 2011-08-01 | Carotid artery coil |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102323556A (en) |
| WO (1) | WO2013017041A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013017041A1 (en) * | 2011-08-01 | 2013-02-07 | 苏州众志医疗科技有限公司 | Carotid artery coil |
| CN104375104A (en) * | 2014-11-20 | 2015-02-25 | 清华大学 | Carotid artery coil, coil device and coil equipment |
| CN106019187A (en) * | 2016-07-25 | 2016-10-12 | 江阴万康医疗科技有限公司 | Magnetic-resonance carotid plaque radiofrequency imaging coil |
| CN115629346A (en) * | 2022-11-10 | 2023-01-20 | 中国科学院深圳先进技术研究院 | Multi-channel transrectal prostate coil, system and working method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060267586A1 (en) * | 2004-11-16 | 2006-11-30 | Kabushiki Kaisha Toshiba | Radio frequency coil assembly and magnetic resonance imaging apparatus |
| US7221161B2 (en) * | 2003-01-21 | 2007-05-22 | General Electric Company | Coil arrays for parallel imaging in magnetic resonance imaging |
| JP2008067733A (en) * | 2006-09-12 | 2008-03-27 | Ge Medical Systems Global Technology Co Llc | Rf coil and magnetic resonance imaging system using it |
| CN201852929U (en) * | 2010-08-31 | 2011-06-01 | 西门子迈迪特(深圳)磁共振有限公司 | Carotid coil |
| CN202189139U (en) * | 2011-08-01 | 2012-04-11 | 苏州众志医疗科技有限公司 | Carotid coil |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5682098A (en) * | 1996-01-11 | 1997-10-28 | W. L. Gore & Associates, Inc. | Open quadrature whole volume imaging NMR surface coil array including three figure-8 shaped surface coils |
| JP4891539B2 (en) * | 2004-11-16 | 2012-03-07 | 株式会社東芝 | High frequency coil assembly and magnetic resonance imaging apparatus |
| CN102323556A (en) * | 2011-08-01 | 2012-01-18 | 苏州众志医疗科技有限公司 | Carotid artery coil |
-
2011
- 2011-08-01 CN CN201110217445A patent/CN102323556A/en active Pending
-
2012
- 2012-07-27 WO PCT/CN2012/079247 patent/WO2013017041A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7221161B2 (en) * | 2003-01-21 | 2007-05-22 | General Electric Company | Coil arrays for parallel imaging in magnetic resonance imaging |
| US20060267586A1 (en) * | 2004-11-16 | 2006-11-30 | Kabushiki Kaisha Toshiba | Radio frequency coil assembly and magnetic resonance imaging apparatus |
| JP2008067733A (en) * | 2006-09-12 | 2008-03-27 | Ge Medical Systems Global Technology Co Llc | Rf coil and magnetic resonance imaging system using it |
| CN201852929U (en) * | 2010-08-31 | 2011-06-01 | 西门子迈迪特(深圳)磁共振有限公司 | Carotid coil |
| CN202189139U (en) * | 2011-08-01 | 2012-04-11 | 苏州众志医疗科技有限公司 | Carotid coil |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013017041A1 (en) * | 2011-08-01 | 2013-02-07 | 苏州众志医疗科技有限公司 | Carotid artery coil |
| CN104375104A (en) * | 2014-11-20 | 2015-02-25 | 清华大学 | Carotid artery coil, coil device and coil equipment |
| CN104375104B (en) * | 2014-11-20 | 2017-04-12 | 北京清影华康科技有限公司 | Carotid artery coil, coil device and coil equipment |
| CN106019187A (en) * | 2016-07-25 | 2016-10-12 | 江阴万康医疗科技有限公司 | Magnetic-resonance carotid plaque radiofrequency imaging coil |
| CN106019187B (en) * | 2016-07-25 | 2018-09-14 | 江阴万康医疗科技有限公司 | Magnetic resonance carotid plaques radio frequency imaging coil |
| CN115629346A (en) * | 2022-11-10 | 2023-01-20 | 中国科学院深圳先进技术研究院 | Multi-channel transrectal prostate coil, system and working method |
| CN115629346B (en) * | 2022-11-10 | 2023-12-26 | 中国科学院深圳先进技术研究院 | Multichannel transrectal prostate coil, system and working method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013017041A1 (en) | 2013-02-07 |
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| PB01 | Publication | ||
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Application publication date: 20120118 |