CN202600123U - High temperature superconductor knee-joint radio frequency receiving coil device used for magnetic resonance imaging - Google Patents
High temperature superconductor knee-joint radio frequency receiving coil device used for magnetic resonance imaging Download PDFInfo
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- CN202600123U CN202600123U CN 201220230959 CN201220230959U CN202600123U CN 202600123 U CN202600123 U CN 202600123U CN 201220230959 CN201220230959 CN 201220230959 CN 201220230959 U CN201220230959 U CN 201220230959U CN 202600123 U CN202600123 U CN 202600123U
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- temperature superconductor
- liquid nitrogen
- knee joint
- magnetic resonance
- resonance imaging
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Abstract
The utility model discloses a high temperature superconductor knee-joint radio frequency receiving coil device used for magnetic resonance imaging. The high temperature superconductor knee radio frequency receiving coil device comprises a shell (1), a vacuum cover (2) and a liquid nitrogen circulating system, wherein a through hole (3) is formed in the shell (1), the vacuum cover (2) is arranged in the shell (1), a high temperature superconductor knee-joint radio frequency receiving coil (4) is arranged in the vacuum cover (2), at least three liquid nitrogen tanks (5) are arranged at the periphery of the high temperature superconductor knee-joint coil (4), low-temperature heat conduction plates (6) are respectively arranged between each liquid nitrogen tank (5) and the high temperature superconductor knee-joint radio frequency receiving coil (4), at least one liquid nitrogen inlet pipe (7) and a liquid nitrogen outlet pipe (8) are arranged on each liquid nitrogen tank (5), a preamplifier (9) is arranged at the lower end of the shell (1), and a signal receiving device (10) is arranged at one end of the preamplifier (9). Due to the adoption of the structure, the self resistance of the coil is reduced, so that the Q value of the coil is improved, and the signal receiving performance is improved.
Description
Technical field
The utility model relates to high-temperature superconductor knee joint RF receiving coil, relates in particular to the high-temperature superconductor knee joint RF receiving coil that is used to scan tiny long and narrow topical diagnosis testees such as knee joint.
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 utility model will solve provides the knee joint RF receiving coil apparatus of magnetic resonance imaging, according to knee joint profile characteristics, is provided with the through hole suitable with it; Pass through liquid nitrogen refrigerating again; Utilize high temperature superconducting materia, reduce the coil 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 utility model provides a kind of high-temperature superconductor knee joint RF receiving coil apparatus that is used for magnetic resonance imaging, comprises shell, vacuum (-tight) housing and the liquid nitrogen circulation system; Vacuum (-tight) housing is provided with vacuum pumping port; Shell is provided with through hole, and said vacuum (-tight) housing is arranged in the shell, is provided with high-temperature superconductor knee joint coil in the said vacuum (-tight) housing; Between vacuum (-tight) housing and the high-temperature superconductor knee joint coil is vacuum chamber; Said high-temperature superconductor knee joint coil periphery is provided with at least three liquid nitrogen containers, is provided with the low-temperature heat conductive plate between said liquid nitrogen container and the high-temperature superconductor knee joint coil, and said liquid nitrogen container is provided with at least one liquid nitrogen feed tube and liquid nitrogen drain pipe; Said shell lower end is provided with prime amplifier; Said prime amplifier one end is provided with signal receiving device, and prime amplifier one end is connected with high-temperature superconductor knee joint coil through signal transmssion line, and the other end is connected with signal receiving device through signal transmssion line.
The liquid nitrogen container outside is provided with heat insulation layer, and said heat insulation layer is processed by no magnetic nonmetallic materials, and said thermal insulation material is a pearlife, and the low-temperature heat conductive plate is processed by red copper or sapphire crystal material.
Can place testee in the through hole, and close on mutually with high-temperature superconductor knee joint coil.
Adopt said structure, its beneficial effect does.
The utility model 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.The liquid nitrogen use cost is low, and easy operating directly improves liquid nitrogen through the liquid nitrogen circulation system, realizes recycling continuously of liquid nitrogen.Between vacuum (-tight) housing and the high-temperature superconductor knee joint coil is 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 knee joint coil 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.The liquid nitrogen container periphery is provided with heat insulation layer, and heat insulation layer is processed by thermal insulation material, and said thermal insulation material is a pearlife, not only plays heat insulation effect, and does not influence the operate as normal of system.
Shell is provided with through hole, can scan in all directions according to the different parts size, and this coil and all kinds of magnetic resonance system are used, and is used for positions such as knee joint, wrist joint elbow joint.
Description of drawings
Fig. 1 is a kind of structural representation that is used for the high-temperature superconductor knee joint RF receiving coil apparatus of magnetic resonance imaging of the utility model.
Fig. 2 is a kind of side structure synoptic diagram that is used for the high-temperature superconductor knee joint RF receiving coil apparatus of magnetic resonance imaging of the utility model.
Among the figure: 1-shell, 2-vacuum (-tight) housing, 3-through hole, 4-high-temperature superconductor knee joint coil, 5-liquid nitrogen container; 6-low-temperature heat conductive plate, 7-liquid nitrogen feed tube, 8-liquid nitrogen drain pipe, 9-prime amplifier; The 10-signal receiving device, 11-heat insulation layer, 12-vacuum pumping port, 13-vacuum chamber.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
As depicted in figs. 1 and 2, a kind of high-temperature superconductor knee joint RF receiving coil apparatus that is used for magnetic resonance imaging comprises shell 1, vacuum (-tight) housing 2 and the liquid nitrogen circulation system; Shell 1 is provided with through hole 3; Vacuum (-tight) housing 2 is arranged in the shell 1, and vacuum (-tight) housing 2 is provided with vacuum pumping port 12, is provided with high-temperature superconductor knee joint coil 4 in the vacuum (-tight) housing 2; High-temperature superconductor knee joint coil 4 peripheries are provided with at least three liquid nitrogen containers 5; Liquid nitrogen container 5 outsides are provided with heat insulation layer 11, and heat insulation layer 10 is processed by no magnetic nonmetallic materials, and said thermal insulation material is a pearlife; Be provided with low-temperature heat conductive plate 6 between liquid nitrogen container 5 and the high-temperature superconductor knee joint coil 4; Low-temperature heat conductive plate 6 is processed by the sapphire crystal material; Liquid nitrogen container 5 is provided with at least one liquid nitrogen feed tube 7 and liquid nitrogen drain pipe 8, and shell 1 lower end is provided with prime amplifier 9, and prime amplifier 9 one ends are provided with signal receiving device 10; Prime amplifier 9 one ends are connected with high-temperature superconductor knee joint coil 4 through signal transmssion line, and the other end is connected with signal receiving device 10 through signal transmssion line.
Between vacuum (-tight) housing 2 and the high-temperature superconductor knee joint coil 4 is vacuum chamber 13.Can place testee in the through hole 3, and close on mutually with high-temperature superconductor knee joint coil 4.
At first; Vacuum pumping port 12 links to each other with external vacuum equipment, and vacuum equipment comprises vacuum pump and CS, is vacuum chamber 13 between vacuum (-tight) housing 2 and the high-temperature superconductor knee joint coil 4; Vacuum pumping port 12 is connected with vacuum pump; With vacuumizing in the vacuum (-tight) housing 2, vacuum chamber 13 is in vacuum state to vacuum pump through vacuum pumping port 12, and this moment, vacuum tightness was higher than 1 * 10
-3Pa
, be provided with around the vacuum (-tight) housing 2 between four liquid nitrogen containers 5, four liquid nitrogen containers 5 and connect through pipeline, wherein there are two liquid nitrogen containers 5 to be provided with liquid nitrogen feed tube 7 and liquid nitrogen drain pipe 8; Each liquid nitrogen container 5 is provided with low-temperature heat conductive plate 6, and contacts with high-temperature superconductor knee joint coil 4, and liquid nitrogen container 5, low-temperature heat conductive plate 6 and high-temperature superconductor knee joint coil 4 constitute an integral body; The liquid nitrogen circulation system links to each other with liquid nitrogen feed tube 7, and liquid nitrogen injects in the liquid nitrogen container 5 through liquid nitrogen feed tube 7, and liquid nitrogen stores in liquid nitrogen container 5; Unnecessary liquid nitrogen flows out liquid nitrogen container 5 through liquid nitrogen drain pipe 8, because liquid nitrogen container 5 outsides are in high vacuum state, liquid nitrogen container 5 outsides are provided with heat insulation layer; Its thermal insulation material is processed by the nonmetal pearlife material of no magnetic, makes liquid nitrogen container 5 have good heat insulation effect, and high-temperature superconductor knee joint coil 4 contacts with low-temperature heat conductive plate 6; Liquid nitrogen temperature is transferred to high-temperature superconductor knee joint coil 4 through low-temperature heat conductive plate 6, guarantees the working temperature of high-temperature superconductor knee joint coil, also isolates with extraneous room temperature simultaneously; Prevent frostbite; In the scanning process, testee is positioned in the through hole 3, after superconduction knee joint line 4 receives the signal of testee; Transfer signals to prime amplifier 9 through signal transmssion line; Signal is passed to signal receiver 10 after amplifying through prime amplifier 9, and last signal receiver 10 transfers signals to magnetic resonance system as receiving element.
Claims (8)
1. high-temperature superconductor knee joint RF receiving coil apparatus that is used for magnetic resonance imaging; Comprise shell (1), vacuum (-tight) housing (2) and the liquid nitrogen circulation system; Shell (1) is provided with through hole (3); Said vacuum (-tight) housing (2) is arranged in the shell (1), it is characterized in that: be provided with high-temperature superconductor knee joint coil (4) in the said vacuum (-tight) housing (2), said high-temperature superconductor knee joint coil (4) periphery is provided with at least three liquid nitrogen containers (5); Be provided with low-temperature heat conductive plate (6) between said liquid nitrogen container (5) and the high-temperature superconductor knee joint coil (4); Said liquid nitrogen container (5) is provided with at least one liquid nitrogen feed tube (7) and liquid nitrogen drain pipe (8), and said shell (1) lower end is provided with prime amplifier (9), and said prime amplifier (9) one ends are provided with signal receiving device (10).
2. according to the said a kind of high-temperature superconductor knee joint RF receiving coil apparatus that is used for magnetic resonance imaging of claim 1, it is characterized in that: said liquid nitrogen container (5) outside is provided with heat insulation layer (11).
3. according to the said a kind of high-temperature superconductor knee joint RF receiving coil apparatus that is used for magnetic resonance imaging of claim 1, it is characterized in that: said vacuum (-tight) housing (2) is provided with vacuum pumping port (12).
4. according to the said a kind of high-temperature superconductor knee joint RF receiving coil apparatus that is used for magnetic resonance imaging of claim 1, it is characterized in that: be vacuum chamber (13) between said vacuum (-tight) housing (2) and the high-temperature superconductor knee joint coil (4).
5. according to the said a kind of high-temperature superconductor knee joint RF receiving coil apparatus that is used for magnetic resonance imaging of claim 1, it is characterized in that: said low-temperature heat conductive plate (6) is processed by red copper or sapphire crystal material.
6. according to the said a kind of high-temperature superconductor knee joint RF receiving coil apparatus that is used for magnetic resonance imaging of claim 2, it is characterized in that: said heat insulation layer (11) is processed by no magnetic nonmetallic materials, and said thermal insulation material is a pearlife.
7. according to the said a kind of high-temperature superconductor knee joint RF receiving coil apparatus that is used for magnetic resonance imaging of claim 1; It is characterized in that: said prime amplifier (9) one ends are connected with high-temperature superconductor knee joint coil (4) through signal transmssion line, and the other end is connected with signal receiving device (10) through signal transmssion line.
8. according to the said a kind of high-temperature superconductor knee joint RF receiving coil apparatus that is used for magnetic resonance imaging of claim 1, it is characterized in that: can place testee in the said through hole (3), and close on mutually with high-temperature superconductor knee joint coil (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220230959 CN202600123U (en) | 2012-05-22 | 2012-05-22 | High temperature superconductor knee-joint radio frequency receiving coil device used for magnetic resonance imaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220230959 CN202600123U (en) | 2012-05-22 | 2012-05-22 | High temperature superconductor knee-joint radio frequency receiving coil device used for magnetic resonance imaging |
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| Publication Number | Publication Date |
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| CN202600123U true CN202600123U (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220230959 Expired - Lifetime CN202600123U (en) | 2012-05-22 | 2012-05-22 | High temperature superconductor knee-joint radio frequency receiving coil device used for magnetic resonance imaging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680923A (en) * | 2012-05-22 | 2012-09-19 | 江苏美时医疗技术有限公司 | High-temperature superconductivity knee joint radio frequency receiving coil device used for magnetic resonance imaging |
-
2012
- 2012-05-22 CN CN 201220230959 patent/CN202600123U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680923A (en) * | 2012-05-22 | 2012-09-19 | 江苏美时医疗技术有限公司 | High-temperature superconductivity knee joint radio frequency receiving coil device used for magnetic resonance imaging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20160726 Granted publication date: 20121212 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20170726 Granted publication date: 20121212 |
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| PD01 | Discharge of preservation of patent | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |
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| CX01 | Expiry of patent term |