CN102680924A - High-temperature superconducting surface radio-frequency receiving coil for magnetic resonance imaging and operation method thereof - Google Patents
High-temperature superconducting surface radio-frequency receiving coil for magnetic resonance imaging and operation method thereof Download PDFInfo
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- CN102680924A CN102680924A CN2012101599567A CN201210159956A CN102680924A CN 102680924 A CN102680924 A CN 102680924A CN 2012101599567 A CN2012101599567 A CN 2012101599567A CN 201210159956 A CN201210159956 A CN 201210159956A CN 102680924 A CN102680924 A CN 102680924A
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Abstract
The invention discloses a high-temperature superconducting surface radio-frequency receiving coil for magnetic resonance imaging and an operating method thereof. The high-temperature superconducting surface radio-frequency receiving coil for magnetic resonance imaging comprises a housing (1), a vacuum housing (2) and a liquid nitrogen circulating system, wherein the vacuum housing (2) is arranged in the housing (1); a high-temperature superconducting surface coil (3) is arranged in the vacuum housing (2); a low-temperature heat conducting body (4) is arranged at one end of the high-temperature superconducting surface coil (3); a liquid nitrogen tank (5) is arranged at one end of the low-temperature heat conducting body (4); an inlet pipe (6) and an outlet pipe (7) are arranged on the liquid nitrogen tank (5); a pre-amplifier (8) is arranged inside the housing (1); a signal receiving device (9) is arranged at one end of the pre-amplifier (8); and a vacuum chamber (11) is arranged between the liquid nitrogen tank (5) and the vacuum housing (2). With the structure, the high-temperature superconducting surface radio-frequency receiving coil has the advantages that the resistance is reduced; furthermore, the Q value of the coil is increased, the imaging signal-to-noise ratio is increased, and the signal receiving performance is enhanced.
Description
Technical field
The present invention relates to high-temperature superconductor surface RF receiving coil, relate in particular to the high-temperature superconductor surface RF receiving coil that is used for scanning of a surface topical diagnosis testee.The invention still further relates to the method for operating that is used for high-temperature superconductor surface RF receiving coil.
Background technology
In recent ten years, mr imaging technique is extensively applied to medical clinical research, because MR imaging apparatus can carry out scanning imagery to each human body, brings great convenience to diagnosis.MR imaging apparatus in order to improve the picture quality of magnetic resonance imaging, under normal conditions, can select to use dissimilar coils in scanning process; Coil can be designed to given shape, thereby improves signal intensity, in addition; Through improving the wiring form, reduce coil overlapping part coupling capacitance, thereby improve the Q value of coil; At present most radio-frequency coils be by metal material for example copper become, coil is subject to the copper conductor of normal temperature, in imaging process, often receives the related picture noise influence of electronics thermonoise; In order to improve above-mentioned shortcoming, often improve signal to noise ratio (S/N ratio) through prolonging sweep time, use cost improves.
Summary of the invention
The technical matters that the present invention will solve provides the high-temperature superconductor surface RF receiving coil that is used for magnetic resonance imaging; The method of operating of the high-temperature superconductor surface RF receiving coil that is used for magnetic resonance imaging also is provided; Pass through liquid nitrogen refrigerating; Utilize high temperature superconducting materia, reduce the surface coils self-resistance, improve the signal to noise ratio (S/N ratio) of imaging.
In order to solve the problems of the technologies described above, the invention provides the high-temperature superconductor surface RF receiving coil that is used for magnetic resonance imaging, comprise shell, vacuum (-tight) housing and the liquid nitrogen circulation system; Said vacuum (-tight) housing is arranged in the shell; Be provided with the high-temperature superconductor surface coils in the said vacuum (-tight) housing, the high-temperature superconductor surface coils is that the high temperature superconducting materia of 77K-120K is processed by superconducting temperature, is used to receive the coil from the testee magnetic resonance signal; Said high-temperature superconductor surface coils is for receiving the coil from the testee magnetic resonance signal; Said high-temperature superconductor surface coils one end is provided with the low temperature heat conductor, and said low temperature heat conductor is processed by nonmagnetic substance, and said nonmagnetic substance comprises red copper or sapphire crystal; Said low temperature heat conductor one end is provided with liquid nitrogen container; Said liquid nitrogen container is provided with feed tube and drain pipe, and said enclosure is provided with prime amplifier, and said prime amplifier one end is provided with signal receiver; Said prime amplifier one end is connected with the high-temperature superconductor surface coils through signal transmssion line, and the other end is connected with signal receiver; Be vacuum chamber between said liquid nitrogen container and the vacuum (-tight) housing, the pressure in the said vacuum chamber is 10
-3-10
-5Handkerchief.
Said liquid nitrogen container periphery is provided with heat insulation layer, and said heat insulation layer is processed by multilayer insulant, and said thermal insulation material is a pearlife, also is provided with vacuum pumping port on the said vacuum (-tight) housing.
In the present invention, also be provided for the high-temperature superconductor surface RF receiving coil method of operating of magnetic resonance imaging, comprise following several steps.
Said liquid nitrogen container, low temperature heat conductor and high-temperature superconductor surface coils are connected to an one-piece construction mutually; Primer fluid nitrogen cycle system; Liquid nitrogen is injected in the liquid nitrogen container through feed tube, and be stored in the liquid nitrogen container, liquid nitrogen temperature is passed to the high-temperature superconductor surface coils through the low temperature heat conductor; Start scan instruction; The high-temperature superconductor surface coils is as a RF receiving coil; Reception is from the magnetic resonance signal of scanning object, and prime amplifier amplifies the back with signal and transfers to signal receiver through signal transmssion line, and signal receiver communicates information to magnetic resonance system at last.
Adopt said structure, its beneficial effect does.
1, the present invention reduces the coil self-resistance through liquid nitrogen refrigerating, thereby improves the Q value of coil, improves the imaging signal to noise ratio (S/N ratio), makes signal receiving performance improve.
2, between said liquid nitrogen container and the vacuum (-tight) housing be vacuum chamber; After vacuumizing, can use for a long time single; Save time and program, the liquid nitrogen circulation system is controlled at 80K with high-temperature superconductor surface coils cryogenic temperature, and vacuum chamber separates low temperature environment and normal temperature environment; Both holding coil temperature for a long time can prevent again that determinand from directly contacting with low temperature to cause frostbite.
3, the liquid nitrogen use cost is low, and easy operating directly provides liquid nitrogen through the liquid nitrogen circulation system, realizes recycling continuously of liquid nitrogen.
4, the liquid nitrogen container periphery is provided with heat insulation layer, and heat insulation layer is processed by multilayer insulant, and said thermal insulation material is a pearlife, not only plays heat insulation effect, and does not influence the operate as normal of system.
5, the high-temperature superconductor surface coils is located at vacuum (-tight) housing inside, directly can scan different parts, and this coil and all kinds of magnetic resonance system are used, and are used for positions such as temporomandibular joint, eyeball, wrist joint and ankle-joint.
Description of drawings
Fig. 1 is the structural representation that is used for the high-temperature superconductor surface RF receiving coil of magnetic resonance imaging of the present invention.
Among the figure: 1-shell, 2-vacuum (-tight) housing, 3-high-temperature superconductor surface coils, 4-low temperature heat conductor, 5-liquid nitrogen container, 6-feed tube, 7-drain pipe, 8-prime amplifier, 9-signal receiver, 10-heat insulation layer, 11-vacuum chamber, 12-vacuum pumping port.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed explanation.
As shown in Figure 1; Be used for the high-temperature superconductor surface RF receiving coil of magnetic resonance imaging, comprise shell 1, vacuum (-tight) housing 2 and the liquid nitrogen circulation system, said vacuum (-tight) housing 2 is arranged in the shell 1; Be provided with high-temperature superconductor surface coils 3 in the said vacuum (-tight) housing 2; High-temperature superconductor surface coils 3 is that the high temperature superconducting materia of 77K-120K is processed by superconducting temperature, is used to receive from the said high-temperature superconductor surface coils 3 of the coil of testee magnetic resonance signal for receiving the coil from the testee magnetic resonance signal, and said high-temperature superconductor surface coils 3 one ends are provided with low temperature heat conductor 4; Said low temperature heat conductor 4 is processed by nonmagnetic substance; Said nonmagnetic substance comprises red copper or sapphire crystal, and said low temperature heat conductor 4 one ends are provided with liquid nitrogen container 5, and said liquid nitrogen container 5 is provided with feed tube 6 and drain pipe 7; Said shell 1 inside is provided with prime amplifier 8, and said prime amplifier 8 one ends are provided with signal receiver 9, and said prime amplifier 8 one ends are connected with high-temperature superconductor surface coils 3 through signal transmssion line, and the other end is connected with signal receiver 9; Be vacuum chamber 11 between said liquid nitrogen container 5 and the vacuum (-tight) housing 2, the pressure in the said vacuum chamber 11 is 10
-3-10
-5Handkerchief.
Said liquid nitrogen container 5 peripheries are provided with heat insulation layer 10, and said heat insulation layer 10 is processed by multilayer insulant, and said thermal insulation material is a pearlife; Also be provided with vacuum pumping port 12 on the said vacuum (-tight) housing 2, said vacuum pumping port 12 links to each other with vacuum pump when running, and takes out mouth 12 with vacuum packing ring or O type circle sealed vacuum.
At first, vacuum pumping port 12 1 ends are provided with vacuum pump, and vacuum pumping port 12 is connected with vacuum pump; With vacuumizing in the vacuum (-tight) housing 2, the setting of vacuum chamber 11 can guarantee the working temperature of high-temperature superconductor surface coils to vacuum pump through vacuum pumping port 12, also isolates with extraneous room temperature simultaneously; Prevent frostbite, the said liquid nitrogen container of high temperature 5, low temperature heat conductor 4 and high-temperature superconductor surface coils 3 are arranged at vacuum (-tight) housing 2 inside, and liquid nitrogen container 5, low temperature heat conductor 4 and high-temperature superconductor surface coils 3 constitute an integral body; The liquid nitrogen circulation system links to each other with feed tube 6, and liquid nitrogen injects in the liquid nitrogen container 5 through feed tube 6, produces the circulation system; Liquid nitrogen stores in liquid nitrogen container 5, and unnecessary liquid nitrogen flows out liquid nitrogen container 5 through drain pipe 7, because liquid nitrogen container 5 outsides are in high vacuum state; Liquid nitrogen container 5 peripheries are provided with heat insulation layer, and its thermal insulation material is processed by pearlife, make liquid nitrogen container 5 have good heat insulation effect; High-temperature superconductor surface coils 3 is installed in an end of low temperature heat conductor 4, and liquid nitrogen temperature passes to high-temperature superconductor surface coils 3 through low temperature heat conductor 4, and low temperature heat conductor 4 is the sapphire heat transfer medium; In the scanning process; After superconduction surface coils 3 receives the signal of testee, transfer signals to prime amplifier 8, after signal amplifies through prime amplifier 8 through signal transmssion line; Be passed to signal receiver 9, last signal receiver 9 transfers signals to magnetic resonance system as receiving element.
The present invention also is useful on the method for operating of the high-temperature superconductor surface RF receiving coil of magnetic resonance imaging, comprises following several steps.
Said liquid nitrogen container 5, low temperature heat conductor 4 and high-temperature superconductor surface coils 3 are connected to an one-piece construction mutually; Primer fluid nitrogen cycle system; Liquid nitrogen is injected in the liquid nitrogen container 5 through feed tube 6; And be stored in the liquid nitrogen container 5, liquid nitrogen produces temperature and is passed to high-temperature superconductor surface coils 3 through low temperature heat conductor 4, to keep high-temperature superconductor surface coils 3 normal working temperatures;
Scanning object is positioned over shell 1 one sides; Start scan instruction; High-temperature superconductor surface coils 3 is as a RF receiving coil; Reception is from the magnetic resonance signal of scanning object, and prime amplifier 8 amplifies the back with signal and transfers to signal receiver 9 through signal transmssion line, and signal receiver 9 communicates information to magnetic resonance system at last.
Claims (9)
1. the high-temperature superconductor surface RF receiving coil that is used for magnetic resonance imaging; Comprise shell (1), vacuum (-tight) housing (2) and the liquid nitrogen circulation system; Said vacuum (-tight) housing (2) is arranged in the shell (1); It is characterized in that: be provided with high-temperature superconductor surface coils (3) in the said vacuum (-tight) housing (2), said high-temperature superconductor surface coils (3) one ends are provided with low temperature heat conductor (4), and said low temperature heat conductor (4) one ends are provided with liquid nitrogen container (5); Said liquid nitrogen container (5) is provided with feed tube (6) and drain pipe (7); Said shell (1) inside is provided with prime amplifier (8), and said prime amplifier (8) one ends are provided with signal receiver (9), is vacuum chamber (11) between said liquid nitrogen container (5) and the vacuum (-tight) housing (2).
2. according to the said high-temperature superconductor surface RF receiving coil that is used for magnetic resonance imaging of claim 1, it is characterized in that: said liquid nitrogen container (5) periphery is provided with heat insulation layer (10).
3. according to the said high-temperature superconductor surface RF receiving coil that is used for magnetic resonance imaging of claim 1, it is characterized in that: also be provided with vacuum pumping port (12) on the said vacuum (-tight) housing (2).
4. according to the said high-temperature superconductor surface RF receiving coil that is used for magnetic resonance imaging of claim 1, it is characterized in that: said low temperature heat conductor (4) is processed by nonmagnetic substance, and said nonmagnetic substance comprises red copper or sapphire crystal.
5. according to the said high-temperature superconductor surface RF receiving coil that is used for magnetic resonance imaging of claim 2, it is characterized in that: said heat insulation layer (10) is processed by multilayer insulant, and said thermal insulation material is a pearlife.
6. according to the said high-temperature superconductor surface RF receiving coil that is used for magnetic resonance imaging of claim 1; It is characterized in that: said prime amplifier (8) one ends are connected with high-temperature superconductor surface coils (3) through signal transmssion line, and the other end is connected with signal receiver (9).
7. according to the said high-temperature superconductor surface RF receiving coil that is used for magnetic resonance imaging of claim 1; It is characterized in that: said high-temperature superconductor surface coils (3) is that the high temperature superconducting materia of 77K-120K is processed by superconducting temperature, is used to receive the coil from the testee magnetic resonance signal.
8. according to the said high-temperature superconductor surface RF receiving coil that is used for magnetic resonance imaging of claim 1, it is characterized in that: the pressure in the said vacuum chamber (11) is 10
-3-10
-5Handkerchief.
9. method of operating according to the described high-temperature superconductor surface RF receiving coil that is used for magnetic resonance imaging of claim 1 is characterized in that: comprise following several steps:
Said liquid nitrogen container (5), low temperature heat conductor (4) and high-temperature superconductor surface coils (3) are connected to an one-piece construction mutually; Primer fluid nitrogen cycle system; Liquid nitrogen is injected in the liquid nitrogen container (5) through feed tube (6); And be stored in the liquid nitrogen container (5), liquid nitrogen temperature is passed to high-temperature superconductor surface coils (3) through low temperature heat conductor (4);
Start scan instruction; High-temperature superconductor surface coils (3) is as a RF receiving coil; Reception is from the magnetic resonance signal of scanning object; Prime amplifier (8) amplifies the back with signal and transfers to signal receiver (9) through signal transmssion line, and signal receiver (9) communicates information to magnetic resonance system at last.
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| CN2012101599567A CN102680924A (en) | 2012-05-22 | 2012-05-22 | High-temperature superconducting surface radio-frequency receiving coil for magnetic resonance imaging and operation method thereof |
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| CN2012101599567A CN102680924A (en) | 2012-05-22 | 2012-05-22 | High-temperature superconducting surface radio-frequency receiving coil for magnetic resonance imaging and operation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116146A (en) * | 2013-02-26 | 2013-05-22 | 江苏美时医疗技术有限公司 | Head radiofrequency coil for magnetic resonance imaging system |
| CN103116147A (en) * | 2013-02-26 | 2013-05-22 | 江苏美时医疗技术有限公司 | Knee radiofrequency coil for magnetic resonance imaging system |
| CN103961102A (en) * | 2014-03-11 | 2014-08-06 | 江苏美时医疗技术有限公司 | Composite type 2T whole-body magnetic resonance imaging device |
| CN114137461A (en) * | 2021-10-15 | 2022-03-04 | 江苏美时医疗技术有限公司 | Online cooling circulation system of high-temperature superconducting radio frequency coil |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1476525A (en) * | 2000-10-26 | 2004-02-18 | �ϰ���ѧ��ҵ����˾ | Cooling of receive coil in MRI scanners |
| CN101118798A (en) * | 2006-07-27 | 2008-02-06 | 株式会社日立制作所 | Superconducting magnet apparatus and magnetic resonance imaging apparatus |
| CN101688906A (en) * | 2007-06-19 | 2010-03-31 | 皇家飞利浦电子股份有限公司 | The MRI radio frequency receiver that comprises digital down converter |
| CN101884532A (en) * | 2009-05-15 | 2010-11-17 | 美时医疗技术(上海)有限公司 | Superconductive magnetic resonance imager as well as manufacturing method and application |
| CN202600122U (en) * | 2012-05-22 | 2012-12-12 | 江苏美时医疗技术有限公司 | High temperature superconductive surface radio frequency receiving coil used for magnetic resonance imaging |
-
2012
- 2012-05-22 CN CN2012101599567A patent/CN102680924A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1476525A (en) * | 2000-10-26 | 2004-02-18 | �ϰ���ѧ��ҵ����˾ | Cooling of receive coil in MRI scanners |
| CN101118798A (en) * | 2006-07-27 | 2008-02-06 | 株式会社日立制作所 | Superconducting magnet apparatus and magnetic resonance imaging apparatus |
| CN101688906A (en) * | 2007-06-19 | 2010-03-31 | 皇家飞利浦电子股份有限公司 | The MRI radio frequency receiver that comprises digital down converter |
| CN101884532A (en) * | 2009-05-15 | 2010-11-17 | 美时医疗技术(上海)有限公司 | Superconductive magnetic resonance imager as well as manufacturing method and application |
| CN202600122U (en) * | 2012-05-22 | 2012-12-12 | 江苏美时医疗技术有限公司 | High temperature superconductive surface radio frequency receiving coil used for magnetic resonance imaging |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116146A (en) * | 2013-02-26 | 2013-05-22 | 江苏美时医疗技术有限公司 | Head radiofrequency coil for magnetic resonance imaging system |
| CN103116147A (en) * | 2013-02-26 | 2013-05-22 | 江苏美时医疗技术有限公司 | Knee radiofrequency coil for magnetic resonance imaging system |
| CN103116147B (en) * | 2013-02-26 | 2015-11-25 | 江苏美时医疗技术有限公司 | A kind of knee radiofrequency coil for magnetic resonance imaging system |
| CN103116146B (en) * | 2013-02-26 | 2015-11-25 | 江苏美时医疗技术有限公司 | A kind of head radiofrequency coil for magnetic resonance imaging system |
| CN103961102A (en) * | 2014-03-11 | 2014-08-06 | 江苏美时医疗技术有限公司 | Composite type 2T whole-body magnetic resonance imaging device |
| CN114137461A (en) * | 2021-10-15 | 2022-03-04 | 江苏美时医疗技术有限公司 | Online cooling circulation system of high-temperature superconducting radio frequency coil |
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Application publication date: 20120919 |