CN203930033U - NMR RF coil heat sink - Google Patents
NMR RF coil heat sink Download PDFInfo
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- CN203930033U CN203930033U CN201420296247.8U CN201420296247U CN203930033U CN 203930033 U CN203930033 U CN 203930033U CN 201420296247 U CN201420296247 U CN 201420296247U CN 203930033 U CN203930033 U CN 203930033U
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- pipeline
- coil
- heat sink
- radio
- liquid nitrogen
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Abstract
The utility model discloses NMR RF coil heat sink, it relates to nuclear magnetic resonance technique field, it comprises heat sink, object under test, coil, gradient magnetic, static magnetic field, liquid nitrogen storage device, pipeline, radio-frequency coil, local storage and pipeline, one side of heat sink is provided with pipeline, pipeline is connected with liquid nitrogen storage device, liquid nitrogen storage device is provided with local storage on border, coil is placed in the lower right of heat sink, object under test is placed on pipeline, one side end face of static magnetic field is provided with gradient magnetic, pipeline stretches in static magnetic field through gradient magnetic, radio-frequency coil vertically stretches in coil, effectively promote the signal to noise ratio of Magnetic resonance imaging, can extend the life-span of high-temperature superconductor radio-frequency coil.
Description
Technical field:
The utility model relates to NMR RF coil heat sink, belongs to nuclear magnetic resonance technique field.
Background technology:
Magnetic resonance radio frequency is a kind of very important diagnostic imaging instrument clinically.The magnetic radiography that shakes utilizes powerful main field, and most of hydrogen atoms in body are arranged according to main field direction.By instrument, produce the rotary rowed column direction that pulse changes hydrogen atom in body, atomic nucleus will discharge the energy of absorption, the signal that generates electromagnetic waves, then via Computer Analysis, described signal is converted to image, be exactly the magnetic resonance image (MRI) of generally seeing.Human body contains a lot of hydrogen nucleis, and itself has again magnetic signature these hydrogen nucleis.Human body is placed in to powerful and uniform nuclear magnetic resonance static magnetic field, recycles specific radio-frequency (RF) radio wave impulse, the in-house hydrogen nuclei of exciting human.Radio-frequency coil is the shake significant components of transmitting and received RF signal in angiography system of magnetic, and radio-frequency coil performance directly affects the accuracy of quality and the reconstructed results of image.According to magnetic resonance signal to noise ratio and radio-frequency coil temperature, radio-frequency coil resistance, tested object temperature and tested object resistance, can know that reduction radio-frequency coil temperature and resistance can promote the signal to noise ratio of Magnetic resonance imaging effectively.But owing to adopting highdensity foam box to do Cryo Equipment, through the regular hour, foam box is outer can freeze, thereby freezing determinand, so just caused that refrigeration plant exists that refrigerating efficiency is not high, complex structure, the high shortcoming of cost.
Utility model content:
For the problems referred to above, the technical problems to be solved in the utility model is to provide NMR RF coil heat sink.
NMR RF coil heat sink of the present utility model, it comprises heat sink, object under test, coil, gradient magnetic, static magnetic field, liquid nitrogen storage device, pipeline, radio-frequency coil, local storage and pipeline, one side of heat sink is provided with pipeline, pipeline is connected with liquid nitrogen storage device, liquid nitrogen storage device is provided with local storage on border, coil is placed in the lower right of heat sink, object under test is placed on pipeline, one side end face of static magnetic field is provided with gradient magnetic, pipeline stretches in static magnetic field through gradient magnetic, radio-frequency coil vertically stretches in coil.
As preferably, described pipeline and pipeline are made by high rigidity heat-barrier material.
As preferably, described radio-frequency coil is cooling high-temperature superconducting radio-frequency coil.
The beneficial effects of the utility model: it can overcome the drawback of prior art, local storage can reach good effect of heat insulation and fast cooling and rewarming effect, refrigerating efficiency is not high, simple in structure, effectively promote the signal to noise ratio of Magnetic resonance imaging, can extend the life-span of high-temperature superconductor radio-frequency coil.
Accompanying drawing explanation:
For ease of explanation, the utility model is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is the utility model structural representation;
Fig. 2 is the connection diagram of radio-frequency coil 8 and coil 3.
1-heat sink, 2-object under test, 3-coil, 4-gradient magnetic, 5-static magnetic field, 6-liquid nitrogen storage device, 7-pipeline, 8-radio-frequency coil, 9-local storage and 10-pipeline.
Embodiment:
As shown in Figure 1-2, this embodiment is by the following technical solutions: it comprises heat sink 1, object under test 2, coil 3, gradient magnetic 4, static magnetic field 5, liquid nitrogen storage device 6, pipeline 7, radio-frequency coil 8, local storage 9 and pipeline 10, one side of heat sink 1 is provided with pipeline 7, pipeline 7 is connected with liquid nitrogen storage device 6, liquid nitrogen storage device is provided with local storage 9 on 6 borders, coil 3 is placed in the lower right of heat sink 1, object under test 2 is placed on pipeline 10, one side end face of static magnetic field 5 is provided with gradient magnetic 4, pipeline 10 stretches in static magnetic field 5 through gradient magnetic 4, radio-frequency coil 8 vertically stretches in coil 3.
Wherein, described pipeline 7 and pipeline 10 are made by high rigidity heat-barrier material; Described radio-frequency coil 8 is cooling high-temperature superconducting radio-frequency coils.
The principle of work of this embodiment is: object under test 2 is placed in static magnetic field 5, coordinate coil 3 to excite all nuclear excitations in determinand 2 regions, signal relaxes, and add gradient magnetic 4, by coil 3, receiving aftertreatment is again that nuclear magnetic resonance image utilizes high vacuum insulation, also be called simple vacuum heat-insulation, the vacuum tightness of General Requirements insulated space pressure below 1.33mPa, could eliminate gaseous exchange conducts heat and most residual gas heat conduction, add local storage 9, thereby reach good effect of heat insulation and fast cooling and rewarming effect, this double-walled interlayer keeps pipeline and the container of high vacuum low temperature to be called Dewar pipe, in this class heat insulation structural, the heat of low-temperature space of bleeding is mainly radiation heat, next is the heat conduction of a small amount of residual gas and solid element.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. NMR RF coil heat sink, it is characterized in that: it comprises heat sink (1), object under test (2), coil (3), gradient magnetic (4), static magnetic field (5), liquid nitrogen storage device (6), pipeline (7), radio-frequency coil (8), local storage (9) and pipeline (10), one side of heat sink (1) is provided with pipeline (7), pipeline (7) is connected with liquid nitrogen storage device (6), liquid nitrogen storage device (6) is provided with local storage (9) on border, coil (3) is placed in the lower right of heat sink (1), object under test (2) is placed on pipeline (10), one side end face of static magnetic field (5) is provided with gradient magnetic (4), pipeline (10) stretches in static magnetic field (5) through gradient magnetic (4), radio-frequency coil (8) vertically stretches in coil (3).
2. NMR RF coil heat sink according to claim 1, is characterized in that: described pipeline (7) and pipeline (10) are made by high rigidity heat-barrier material.
3. NMR RF coil heat sink according to claim 1, is characterized in that: described radio-frequency coil (8) is cooling high-temperature superconducting radio-frequency coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420296247.8U CN203930033U (en) | 2014-05-29 | 2014-05-29 | NMR RF coil heat sink |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420296247.8U CN203930033U (en) | 2014-05-29 | 2014-05-29 | NMR RF coil heat sink |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203930033U true CN203930033U (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420296247.8U Expired - Fee Related CN203930033U (en) | 2014-05-29 | 2014-05-29 | NMR RF coil heat sink |
Country Status (1)
| Country | Link |
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| CN (1) | CN203930033U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772160A (en) * | 2017-03-13 | 2017-05-31 | 上海纽迈电子科技有限公司 | high temperature radio frequency coil with cooling structure |
| CN107705955A (en) * | 2016-08-09 | 2018-02-16 | 布鲁克碧奥斯平股份公司 | NMR equipment including superconducting magnet component and cooling sampling head part |
| CN114114108A (en) * | 2021-11-09 | 2022-03-01 | 中国科学院精密测量科学与技术创新研究院 | Low-cost modular liquid nitrogen low-temperature multi-core magnetic resonance probe |
-
2014
- 2014-05-29 CN CN201420296247.8U patent/CN203930033U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107705955A (en) * | 2016-08-09 | 2018-02-16 | 布鲁克碧奥斯平股份公司 | NMR equipment including superconducting magnet component and cooling sampling head part |
| CN106772160A (en) * | 2017-03-13 | 2017-05-31 | 上海纽迈电子科技有限公司 | high temperature radio frequency coil with cooling structure |
| CN106772160B (en) * | 2017-03-13 | 2023-04-18 | 上海纽迈电子科技有限公司 | High-temperature radio frequency coil with cooling structure |
| CN114114108A (en) * | 2021-11-09 | 2022-03-01 | 中国科学院精密测量科学与技术创新研究院 | Low-cost modular liquid nitrogen low-temperature multi-core magnetic resonance probe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150529 |
|
| EXPY | Termination of patent right or utility model |