CN103083017A - Device for MRI (magnetic resonance imaging) - Google Patents
Device for MRI (magnetic resonance imaging) Download PDFInfo
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- CN103083017A CN103083017A CN2011103312798A CN201110331279A CN103083017A CN 103083017 A CN103083017 A CN 103083017A CN 2011103312798 A CN2011103312798 A CN 2011103312798A CN 201110331279 A CN201110331279 A CN 201110331279A CN 103083017 A CN103083017 A CN 103083017A
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- mri
- magnetic resonance
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Abstract
The invention provides a device for MIR (magnetic resonance imaging). The device comprises a shell and a negative magnetic permeability metamaterial plate, the shell made of non-metallic material comprises an upper shell and a lower shell fixedly connected with the upper shell; the metamaterial plate comprises a plurality of metamaterial layers including a base plate and a plurality of artificial micro structures, the base plate is made of non-metallic material, and the artificial micro structures are attached on the base plate and distributed periodically. Each of the artificial micro structures is a conductive silk line and comprises an opening ring and two bending lines, and the two bending lines respectively serpentinely extend from two end points of the opening ring towards the interior of the opening ring and are free of intersection with each other and with the opening ring. On the premise of not changing existing magnetic resonance equipment, definition of displayed image in the magnetic resonance equipment is improved, cost is reduced relatively to improvement of magnetic resonance imaging capability, and the device is particularly applicable to popularization during application of magnetic resonance imaging.
Description
Technical field
The present invention relates to the NMR (Nuclear Magnetic Resonance)-imaging field, more particularly, Signal Enhanced Technology when relating to nuclear magnetic resonance, NMR.
Background technology
NMR (Nuclear Magnetic Resonance)-imaging (MRI) is to utilize nmr phenomena to obtain electromagnetic signal from human body, and reconstruct human body information, it is a kind of biological magnetic spin imaging technique, it is the characteristics of utilizing the nuclear spin campaign, in externally-applied magnetic field, after radio-frequency pulse stops, the atomic nucleus that spin system has intensified, can not keep this state, with being returned to ordered state original in magnetic field, discharge simultaneously faint energy, become the radio signal, these many signals are detected and input computer with detector, process after conversion displayed map picture on screen through computer.Nuclear magnetic resonance, NMR has been applied to the image-forming diagnose of each system of whole body, and effect is cranium brain and spinal cord, cardiovascular injuries, joint skeleton, soft tissue and pelvic cavity etc. preferably.The dissection that not only can observe each chamber, trunk and valve to cardiovascular disease changes, and can do the ventricle analysis, carry out qualitative and semiquantitative diagnosis, can make a plurality of sectional drawings, spatial resolution is high, show heart and pathological changes overall picture, and with the relation of surrounding structure, be better than other x-ray imagings, two-dimensional ultrasound, nucleic and CT examination.When Encephalomyelopath is diagnosed, can make crown, sagittal and transverse section picture.
The imaging definition of nuclear magnetic resonance equipment directly reflects the situation of health, and the faint energy that the atomic nucleus that has been intensified by spin system due to the signal after radio-frequency pulse discharges when being returned to original ordered state forms, so the intensity of signal is very little.In order to improve the definition of imaging, can strengthen the intensity of radio-frequency pulse, but may cause certain injury to human body; Also can adopt the measure that improves device sensitivity, this can greatly improve the cost of nuclear magnetic resonance equipment.
Because nuclear magnetic resonance, NMR plays an important role to human detection, but because the signal of imaging is very faint, the signal of being badly in need of having a kind of device can make imaging strengthens, and uses same nuclear magnetic resonance equipment can obtain image clearly.
Summary of the invention
In order to solve problems of the prior art, the invention provides a kind of negative-magnetic-permeability meta-material device enhanced propertied to signal that utilized, the signal that the energy that makes the atomic nucleus that intensifies when magnetic resonance detection reply to emit forms is enhanced, and makes nuclear magnetic resonance equipment obtain image clearly.In order to achieve the above object, the present invention is by the following technical solutions:
A kind of device for MRI comprises: housing and be fixed in negative-magnetic-permeability meta-material plate in described housing; Described housing comprises upper casing and the lower casing affixed with described upper casing, and described housing is prepared by nonmetallic materials.
Further, described lower casing has the first side framework, and described first side framework comprises the snap fit of described first side framework inboard; Described upper casing has the Second Edge framework, and described Second Edge framework comprises the draw-in groove that coordinates with the described snap fit of described first side framework inboard.
Further, described first side framework comprises four the first frames, and described snap fit is arranged at described the first scuncheon; Described Second Edge framework comprises described second frame corresponding with described the first frame, and described draw-in groove is corresponding with described snap fit is arranged at described the second frame.
Further, the described snap fit number of described the first frame setting is 4.
Further, described super plate of material is spirally connected fixing through through hole and the nut that the extended double-screw bolt in described lower casing bottom surface passes on described super plate of material.
Further, described super plate of material is two-layer at least, separates with non-metallic pad between described super plate of material.
Further, described super plate of material comprises some super material layers, described super material layer comprises: the substrate that nonmetallic materials are made be attached to substrate on and become a plurality of artificial micro structure of periodically arranging, described artificial micro structure is the silk thread of conductive material, described artificial micro structure comprises split ring and from the two ends of described split ring end points two sweeps that serpentine bend extends in the ring respectively, described two sweeps mutually disjoint and be crossing with described split ring.
Further, the distance between centers of tracks of walking of described sweep equals live width.
Further, have two snakelike kinks on described housing line, and described two snakelike kinks are symmetrical arranged.
Further, described substrate is made by pottery, politef or epoxide resin material.
Device for MRI of the present invention can be under the prerequisite that does not change existing nuclear magnetic resonance equipment, improve the definition of nuclear magnetic resonance equipment displayed map picture, when carrying out magnetic resonance detection, needn't increase too many extra step, easy to use, and cost reduces much than the lifting of nuclear magnetic resonance equipment imaging capability, and the utmost point is suitable for promoting when using NMR.
Description of drawings
Fig. 1 is the structural representation that the present invention is used for the device of MRI;
Fig. 2 is the decomposition texture schematic diagram of the present invention's device of being used for MRI;
Fig. 3 is the fastening structure schematic diagram of the present invention's device of being used for MRI;
Fig. 3 .1 is the enlarged drawing shown in a zone in Fig. 3;
Fig. 4 is the another kind of embodiment structural representation of the present invention's super plate of material of device of being used for MRI;
Fig. 5 is the structural representation of the preferred embodiment of the present invention's super plate of material of device of being used for MRI;
Fig. 6 is the structural representation of a material cell of super plate of material shown in Figure 5;
Fig. 7 is the pcrmeability analogous diagram of negative-magnetic-permeability meta-material plate shown in Figure 5;
Fig. 8 to Figure 10 is the schematic diagram of other several possibility structures of the artificial micro structure of super plate of material.
The specific embodiment
The invention will be further described below in conjunction with drawings and the specific embodiments.
Being respectively as depicted in figs. 1 and 2 the structure that the present invention is used for the device of MRI is schematic diagram and decomposition texture schematic diagram, this device comprises by upper casing 2 and the affixed housing that forms of lower casing 1 and negative-magnetic-permeability meta-material plate 3, upper casing 2 and lower casing 1 are all by the nonmetallic materials preparation, in order to avoid electromagnetic signal is impacted.The nut 13 that lower casing 1 has first side framework 11, double-screw bolt 12 and coordinates with double-screw bolt 12, first side framework 11 comprises the first frame, the inboard of the first frame is provided with snap fit 111, upper casing 21 has Second Edge framework 21, Second Edge framework 21 comprises the second frame, the inboard of the second frame is provided with draw-in groove 211, and snap fit 111 is fixed together upper casing 2 and lower casing 1 with draw-in groove 211 clampings.In present embodiment, the first frame and the second frame are four, and each first frame and the second frame be corresponding four snap fits 111 and the draw-in groove 211 of being provided with all.The position of corresponding lower casing 1 double-screw bolt 12 of super plate of material 3 is provided with the through hole 39 that passes for double-screw bolt 12, in present embodiment, is provided with double-screw bolt 12 at lower casing 1 pair of horns, and super plate of material 3 all is provided with through hole 39 at four jiaos.
During installation, first will surpass plate of material 3 is placed on lower casing 1, guarantee that double-screw bolt 12 passes the through hole 39 of super plate of material 3, then screw tight with nut 13 and double-screw bolt 12, to surpass plate of material 3 fixing with lower casing 1, again upper casing 2 and lower casing 1 are snapped together, make snap fit 111 and draw-in groove 211 corresponding snapping one by one, namely obtain device shown in Figure 1.
For guarantee for the device of MRI can be enough thin, nut 13 is unsuitable blocked up, more can not prop up upper casing 2 when fastening at upper casing 2, lower casing 1, and double-screw bolt 12 can not protrude from nut 13 after nut 13 screws tight.
In use, only needing this device is placed on needs limit, the position of nuclear magnetic resonance, NMR, for example, when detecting knee, be placed between two knees and get final product, this device will strengthen the small-signal by the knee generation, then received by nuclear magnetic resonance equipment, to demonstrate image more clearly.
Be depicted as Fig. 3 and Fig. 3 .1 schematic diagram and a regional enlarged drawing that snap fit coordinates with draw-in groove, after upper casing and lower casing fastened, the snap fit 111 that is positioned at lower casing 1 first side framework 11 inboards snapped in the draw-in groove 211 of upper casing 2 Second Edge framework 21 inboards, forms extremely card.Need not to open again when using due to this device, therefore on each frame body, a plurality of snap fits and draw-in groove are set, guarantee that upper casing engages closely with lower casing.
Be illustrated in figure 4 as the another kind of embodiment of super plate of material in the present invention, can select three super plate of material 3, separate with non-metallic pad 3 ' between every two super plate of material 3, four jiaos of each super plate of material 3 all are provided with through hole 39, non-metallic pad 3 ' in the form of a ring, preferably, the super plate of material of non-metallic pad 3 ' is thin, and does not cover the zone at through hole 39 places.The quantity of super plate of material 3 can be selected as required, is used in the larger occasion in space and can selects more quantity.
As Fig. 5, shown in Figure 6, super plate of material 3 comprises at least one sheet of material 31, and each sheet of material 31 comprises substrate 32 and is attached to the lip-deep a plurality of artificial micro structures 33 of substrate 32.Substrate 32 is tabular, also can be for curving the laminar of annulus, and perhaps a plurality of strip plate quadratures fasten the grid that forms.Substrate 32 is selected the nonmetallic materials such as politef, epoxy resin, FR-4, pottery, ferrite material, SiO2 usually.
Artificial micro structure 33 is periodically on substrate 32 surfaces arranges, and for example rectangular array is arranged, namely take an x direction as row, arranging as row ground perpendicular to the y direction of x direction, and each line space, each column pitch equate respectively, even line space equals column pitch and all can.Preferred line space, column pitch be not more than the incident electromagnetic wave that will respond wavelength 1/5th, also namely for example working environment be that wavelength is the electromagnetic wave of λ, needing super material is to present negative magnetoconductivity to this electromagnetic electromagnetic property, when designing artificial micro structure, above line spacing, column pitch are selected to be not more than λ/5, be preferably λ/10.Obviously, not overlapping mutually in order to make artificial micro structure 3, the length of each artificial micro structure 3 and width also are not more than λ/5.Periodically arranging can also be other arrangement modes with circulation law, and when for example substrate 32 was annular, artificial micro structure 33 was along the external cylindrical surface of annular substrate 32 equally spacedly around a week.
When sheet of material 31 has when a plurality of, according to certain rule, they are encapsulated, for example when substrate 32 is tabular, each sheet of material 31 is arranged in order along the z direction perpendicular to substrate 32 surfaces, be arranged in parallel between lamella, preferably parallel and spacing equates; When substrate 32 is above-mentioned annular, can install the concyclic axle of a plurality of sheet of material 31 ground fixing.
Therefore as shown in Figure 5, artificial micro structure 33 array arrangements can be divided into substrate 32 a plurality of base board units 320 of same array arrangement virtually, and the length of base board unit 320 equals that above line spacing, width equal column pitch, thickness equals substrate 32 thickness.On the surface of each base board unit 320 just in time to an artificial micro structure 33 should be arranged.The material cell 310 that is made of base board unit 320 and lip-deep artificial micro structure 33 thereof as shown in Figure 6.
As Fig. 5, shown in Figure 6, it comprises the housing line 330 that forms split ring and two parallel lines 331 that extend in the split ring from two distal points of the formation opening of described housing line 330, has snakelike kink 332 on described housing line 330.Shown in figure, in embodiment, two parallel lines 331 end separately also is connected with one section broken line, and two opposing extensions of described broken line.Housing line 330 and parallel lines 331 are all made by conductive material, such conductive material is generally such as silver, copper, copper alloy etc. of metal material, can be also other nonmetallic conductive material such as conductive plasticss, ITO (indium tin oxide), CNT, graphite etc.
In Fig. 5, preferred embodiment shown in Figure 6, form on the housing line 330 of rectangular aperture ring and have snakelike kink 332.The snakelike bending here refers to a bit (perhaps not fall back) all the time forward from a starting point when advancing at the direction of advancing perpendicular to it reciprocal formed track back and forth.In Fig. 6, be respectively arranged with a snakelike kink 332 on another two straight flanges perpendicular to opening place straight flange of rectangular aperture ring, and both symmetrical.
In super Material Field, can be by artificial micro structure 33 equivalences be analyzed artificial micro structure 33 to the impact of the electromagnetic property of super material for circuit.The above-mentioned nearly artificial micro structure of " recessed " font can equivalence be an electric capacity and inductance series connection, and wherein the equivalence of pair of parallel line is electric capacity, and the housing line that consists of the rectangular aperture ring is equivalent to inductance.Set up snakelike kink 332 on the housing line, make the cabling line length increase, be equivalent to increase inductance, and then improve the absolute value of negative magnetoconductivity.
For example, in a preferred embodiment of the invention, the material cell that each base board unit 320, artificial micro structure 33 consist of as shown in Figure 6, substrate 32 is selected the FR-4 epoxide resin material, thickness is 0.4mm, and base board unit is of a size of 4mm * 4mm * 0.4mm, and wherein 0.4mm is thickness; Artificial micro structure 33 is made by copper cash, and thickness is 0.018mm, all reserves 0.2mm to the four edges of base board unit, and live width is also 0.2mm, and all distance between centers of tracks of walking are 0.1mm.
The super material that above-mentioned material unit 310 arrays are obtained carries out emulation, and the pcrmeability that obtains about the electromagnetic response curve of frequency as shown in Figure 7.As seen from the figure, the material cell of the present embodiment its pcrmeability in 0.21～0.24GHz scope is negative value, and minimum pcrmeability can reach-26, and to reach minimum pcrmeability be that the loss of its imaginary part is very little, is essentially 0.During not in above-mentioned scope, can also adjust by the size of adjusting artificial micro structure the ghz area at negative magnetoconductivity place when required frequency range.
Therefore, adopt Fig. 5, artificial micro structure shown in Figure 6, can obviously improve the absolute value of the negative magnetoconductivity of super material, thus reinforcement negative magnetoconductivity effect, to satisfy apparatus of the present invention to the requirement of negative magnetoconductivity value.
The above is described embodiments of the invention by reference to the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiment, and for example snakelike kink 332 must not equal live width with the distance of parallel lines 331, can be separated with as illustrated in fig. 8 larger distance; The bending angle of snakelike kink 332 differs and is decided to be the right angle, can be round-corner transition as shown in Figure 9; In addition, snakelike kink 332 also can be on the straight flange at opening place, as shown in Figure 9 not necessarily on two straight flanges vertical with opening place straight flange of rectangular aperture ring; The reciprocal distance of each bending of snakelike kink 332 can be unequal with parallel lines 331, also can equate, as shown in figure 10.Simultaneously, snakelike kink 332 can also can have a plurality ofly for one, perhaps can be arranged on simultaneously on each straight flange of rectangular aperture ring, and even housing line 330 must not be the rectangular aperture ring, can be the circular open ring yet, etc.
The above-mentioned specific embodiment is only schematic; rather than restrictive, those of ordinary skill in the art is not breaking away from the scope situation that aim of the present invention and claim protects under enlightenment of the present invention; also can make a lot of forms, within these all belong to protection of the present invention.
Claims (10)
1. a device that is used for MRI, is characterized in that, comprising: housing and be fixed in negative-magnetic-permeability meta-material plate in described housing; Described housing comprises upper casing and the lower casing affixed with described upper casing, and described housing is prepared by nonmetallic materials.
2. the device for MRI according to claim 1, is characterized in that, described lower casing has the first side framework, and described first side framework comprises the snap fit of described first side framework inboard; Described upper casing has the Second Edge framework, and described Second Edge framework comprises the draw-in groove that coordinates with the described snap fit of described first side framework inboard.
3. the device for MRI according to claim 2, is characterized in that, described first side framework comprises four the first frames, and described snap fit is arranged at described the first scuncheon; Described Second Edge framework comprises described second frame corresponding with described the first frame, and described draw-in groove is corresponding with described snap fit is arranged at described the second frame.
4. the device for MRI according to claim 3, is characterized in that, the described snap fit number of described the first frame setting is 4.
5. the described device for MRI of according to claim 1-4 any one, is characterized in that, described super plate of material is spirally connected fixing through through hole and the nut that the extended double-screw bolt in described lower casing bottom surface passes on described super plate of material.
6. the described device for MRI of according to claim 1-5 any one, is characterized in that, described super plate of material is two-layer at least, separates with non-metallic pad between described super plate of material.
7. the described device for MRI of according to claim 1-6 any one, it is characterized in that, described super plate of material comprises some super material layers, described super material layer comprises: the substrate that nonmetallic materials are made be attached to substrate on and become a plurality of artificial micro structure of periodically arranging, described artificial micro structure is the silk thread of conductive material, described artificial micro structure comprises split ring and from the two ends of described split ring end points two sweeps that serpentine bend extends in the ring respectively, described two sweeps mutually disjoint and be crossing with described split ring.
8. the device for MRI according to claim 7, is characterized in that, the distance between centers of tracks of walking of described sweep equals live width.
9. the device for MRI according to claim 7, is characterized in that, has two snakelike kinks on described housing line, and described two snakelike kinks are symmetrical arranged.
10. the device for MRI according to claim 7, is characterized in that, described substrate is made by pottery, politef or epoxide resin material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110331279.8A CN103083017B (en) | 2011-10-27 | 2011-10-27 | A kind of device for MRI |
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|---|---|---|---|
| CN201110331279.8A CN103083017B (en) | 2011-10-27 | 2011-10-27 | A kind of device for MRI |
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| CN103083017A true CN103083017A (en) | 2013-05-08 |
| CN103083017B CN103083017B (en) | 2016-08-03 |
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| CN201110331279.8A Active CN103083017B (en) | 2011-10-27 | 2011-10-27 | A kind of device for MRI |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107835658A (en) * | 2015-07-03 | 2018-03-23 | 圣彼得堡国立信息技术机械与光学大学 | Magnetic resonance imaging machine |
| CN115389991A (en) * | 2022-08-26 | 2022-11-25 | 天津大学 | Metamaterial dynamic tuning system and method for magnetic resonance echo signal enhancement |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2446600Y (en) * | 2000-07-31 | 2001-09-05 | 郑宗淦 | Memory card shell |
| US20090096545A1 (en) * | 2007-10-12 | 2009-04-16 | Los Alamos National Security Llc | Dynamic frequency tuning of electric and magnetic metamaterial response |
| US7570432B1 (en) * | 2008-02-07 | 2009-08-04 | Toyota Motor Engineering & Manufacturing North America, Inc. | Metamaterial gradient index lens |
| CN101573837A (en) * | 2006-10-12 | 2009-11-04 | 惠普开发有限公司 | Composite material with chirped resonant cells |
| CN201910205U (en) * | 2010-11-18 | 2011-07-27 | 英业达股份有限公司 | Frame component structure and display device with same |
| US20110204891A1 (en) * | 2009-06-25 | 2011-08-25 | Lockheed Martin Corporation | Direct magnetic imaging apparatus and method |
-
2011
- 2011-10-27 CN CN201110331279.8A patent/CN103083017B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2446600Y (en) * | 2000-07-31 | 2001-09-05 | 郑宗淦 | Memory card shell |
| CN101573837A (en) * | 2006-10-12 | 2009-11-04 | 惠普开发有限公司 | Composite material with chirped resonant cells |
| US20090096545A1 (en) * | 2007-10-12 | 2009-04-16 | Los Alamos National Security Llc | Dynamic frequency tuning of electric and magnetic metamaterial response |
| US7570432B1 (en) * | 2008-02-07 | 2009-08-04 | Toyota Motor Engineering & Manufacturing North America, Inc. | Metamaterial gradient index lens |
| US20110204891A1 (en) * | 2009-06-25 | 2011-08-25 | Lockheed Martin Corporation | Direct magnetic imaging apparatus and method |
| CN201910205U (en) * | 2010-11-18 | 2011-07-27 | 英业达股份有限公司 | Frame component structure and display device with same |
Non-Patent Citations (1)
| Title |
|---|
| MANUEL J. FREIRE ET AL.: "On the applications of u=-1 metamaterial lenses for magnetic resonance imaging", 《JOURNAL OF MAGNETIC RESONANCE》, 31 December 2010 (2010-12-31) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107835658A (en) * | 2015-07-03 | 2018-03-23 | 圣彼得堡国立信息技术机械与光学大学 | Magnetic resonance imaging machine |
| CN115389991A (en) * | 2022-08-26 | 2022-11-25 | 天津大学 | Metamaterial dynamic tuning system and method for magnetic resonance echo signal enhancement |
| CN115389991B (en) * | 2022-08-26 | 2024-03-15 | 天津大学 | Metamaterial dynamic tuning system and method for magnetic resonance echo signal enhancement |
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| CN103083017B (en) | 2016-08-03 |
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