CN107317562A - A kind of trapper for magnetic resonance imaging - Google Patents
A kind of trapper for magnetic resonance imaging Download PDFInfo
- Publication number
- CN107317562A CN107317562A CN201610264546.7A CN201610264546A CN107317562A CN 107317562 A CN107317562 A CN 107317562A CN 201610264546 A CN201610264546 A CN 201610264546A CN 107317562 A CN107317562 A CN 107317562A
- Authority
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- China
- Prior art keywords
- trapper
- housing
- inner chamber
- electrode plate
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 238000002595 magnetic resonance imaging Methods 0.000 title claims abstract description 10
- 239000003990 capacitor Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 32
- 239000000758 substrate Substances 0.000 claims description 7
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000005311 nuclear magnetism Effects 0.000 abstract description 5
- 230000002401 inhibitory effect Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H5/00—One-port networks comprising only passive electrical elements as network components
- H03H5/006—One-port networks comprising only passive electrical elements as network components comprising simultaneously tunable inductance and capacitance
-
- 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
- G01R33/42—Screening
- G01R33/422—Screening of the radio frequency field
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
The invention provides a kind of trapper for magnetic resonance imaging, it includes：Housing, cable and tunable capacitor element, the housing has inner chamber, the tunable capacitor element is arranged on housing and positioned at the outside of inner chamber, and the cable turns to controllable impedance element and is arranged in inner chamber, and the capacity cell is connected in parallel with inductance element；Used while by controllable impedance element with capacity cell, trapper is reached good inhibiting effect in the working frequency points that nuclear-magnetism works.
Description
【Technical field】
The present invention relates to mr imaging technique field, more particularly to a kind of trapper for magnetic resonance imaging.
【Background technology】
In MR imaging apparatus, in order to obtain signal to noise ratio as well as possible, generally local coil is positioned
In the body as close to subject or patient.For magnetic resonance signal from local coil to signal transacting
The further transmission of system, generally using the coaxial cable of shielding.Local coil and it is plugged into the of examination couch
One coaxial cable is connected.Be connected with another coaxial cable with the plug of examination couch, its by magnetic resonance signal from
Examination couch is drawn and continues to be transferred to signal processing system.
The electric field formed due to the transmission in high-frequency impulse or reception stage and magnetic field, in the wire of coaxial cable
High frequency electric is induced on cover (metal screen layer).It can cause in the case where not taking suitable braking measure
Image disruption and danger can be caused to patient in the worst case.
In order to suppress the generation of high frequency electric, using the trapper being integrated in patient table.The master of trapper
Act on is to suppress the calcination of common-mode signal and suppression generation high current to patient on RF cable.Trapper
It is the principle that resonance is produced according to electric capacity and inductance, is produced in the working frequency points of nuclear magnetic resonance and suppress signal.For
Meet the working frequency points of nuclear-magnetism work, it is necessary to calculate corresponding inductance and capacitance；Calculate obtained electric capacity
Or inductance value is difficult to match completely in practice.This is accomplished by electric capacity or inductance and turned into that electricity can be adjusted
Capacitance or inductance value.
【The content of the invention】
The technical problem to be solved in the present invention is to provide a kind of trap for magnetic resonance imaging for being easy to adjust
Device.
The present invention is for the technical scheme that uses of solution above-mentioned technical problem：It is a kind of for magnetic resonance imaging
Trapper, it includes：Housing, cable and tunable capacitor element, the housing have inner chamber, described adjustable
Capacity cell is arranged on housing and positioned at the outside of inner chamber, the cable turn to controllable impedance element,
And be arranged in inner chamber, and the capacity cell is connected in parallel with inductance element.
It is preferred that, the tunable capacitor element includes being arranged on the first electricity that on housing and relative spacing is set
Pole plate and second electrode plate, the second electrode plate can be rotated or translation relative to first electrode plate.
It is preferred that, the first electrode plate and the second electrode plate are metallic plate or are covered with the exhausted of metal layer
Edge substrate, the second electrode plate is small compared with first electrode plate.
It is preferred that, the metallic plate or metal layer are shaped as crescent, rectangle, triangle or trapezoidal.
It is preferred that, in addition to for supporting the support of controllable impedance element.
It is preferred that, the support is provided with the helicla flute for being used for accommodating controllable impedance, and the adjustable length of support.
It is preferred that, the support is provided with the screw axially extended, and metal screws are assembled with screw.
It is preferred that, the screw is made up of electrically conductive non-magnetic material.
The present invention is for the technical scheme that uses of solution above-mentioned technical problem：It is a kind of for magnetic resonance imaging
Trapper, it includes：Housing, cable, support and capacity cell, the housing have inner chamber, the electricity
Hold element to be arranged on housing and positioned at the outside of inner chamber, the cable, which is wound on support, constitutes adjustable electric
Sensing unit and it is arranged in inner chamber, support is provided with the screw axially extended, and gold is assembled with screw
Belong to screw, the size of the inductance value for adjusting the controllable impedance element, and the capacity cell with it is adjustable
Inductance element is connected in parallel.
It is preferred that, the housing is provided with through hole, and the through hole connects with inner chamber, and the through hole with it is described
Metal screws align.
The trapper of the present invention, by controllable impedance element or and use while capacity cell, make trap
Device reaches good inhibiting effect in the working frequency points that nuclear-magnetism works.Controllable impedance element, capacity cell structure
Simply, adjust easy to operate, adjustable extent is bigger.
【Brief description of the drawings】
Fig. 1 a are a kind of antiresonant circuit figure of trapper of the embodiment of the present invention；
Fig. 1 b are the antiresonant circuit figure of another trapper of the embodiment of the present invention；
Fig. 1 c are the antiresonant circuit figure of another trapper of the embodiment of the present invention；
The combining structure schematic diagram of the trapper of Fig. 2 embodiment of the present invention；
Another combining structure schematic diagram of the trapper of Fig. 3 embodiment of the present invention；
Fig. 4 is the exploded view of Fig. 2 trapper；
Fig. 5 is another exploded view of Fig. 2 trapper；
Fig. 6 is the another exploded view of Fig. 2 trapper；
Fig. 7 be the embodiment of the present invention in another controllable impedance element exploded view；
Fig. 8 be 7 in inductance element support enlarged drawing.
【Embodiment】
Specific embodiments of the present invention are further described in detail with reference to the accompanying drawings and examples, but
It should not be limited the scope of the invention with this.
In order to suppress the common-mode signal that is produced on RF cable and suppress to produce high current, using being integrated in patient
Trapper in bed, it shows as the high ohmage Z for high frequency electric0, high ohmage Z0For example
It can be realized by antiresonant circuit.One or more coaxial cable is wound in solenoid coil herein,
And in one end of the coil so produced by wire cap (metal screen layer) and the electric capacity for being parallel to the coil
Device is connected.Such trapper is all required in all wires guided by transmission antenna.In Fig. 1
In the circuit theory diagrams of such trapper, the coaxial cable with the wire cap for surrounding multiple inner wires are shown
Solenoid coil is wound in, coil is connected in the joint of its two ends and electric capacity, and this can be adjusted by the inductance
The resonance of the parallel circuit of sample formation.Inner wire insulate with wire cap in the usual manner.
A kind of trapper for magnetic resonance imaging of the embodiment of the present invention, it includes：Housing 1, cable 3 and
Tunable capacitor element 4 and/or controllable impedance element 6, the housing 1 have inner chamber, the tunable capacitor member
Part 4 is arranged on housing 1 and positioned at the outside of inner chamber, the capacitance of the tunable capacitor element 4 it is big
Small adjustable, the cable 3, which is wound in after support 5 after curl loop construction, forms the controllable impedance member
Part 6 and it is arranged in inner chamber, and the tunable capacitor element 4 is connected in parallel with controllable impedance element 6.
Optionally, one or more capacity cells 7 and the controllable impedance element 6 and/or adjustable electric can be increased in addition
Hold element 4 to be connected in parallel.
Housing 1 includes the first shell 11, second housing 12, and the first shell 11, second housing 12 are distinguished
Corresponding to upper half-shells, the lower housing in the embodiment of the present invention.The middle part of second housing 12 is provided with along lengthwise
Second host cavity 120 of direction extension, the side (right side) of the host cavity 120 is provided with the second keeper
121, the opposite side (left side) of the host cavity 120 is provided with the second auxiliary section 122, accordingly, and described the
The middle part of one shell 11 is provided with the first host cavity 110 for extending along longitudinally, first host cavity 110 with
Shape, the structure of second host cavity 120 are roughly the same, and both can be encircled into substantially into cylinder-like structure, used
In receiving support 5 or inductance element 6.The side (right side) of first host cavity 110 coordinates provided with first
Portion 112, first auxiliary section is roughly the same with shape, the structure of the second auxiliary section 122, the host cavity
120 opposite side (left side) is provided with the first location division 111, the location division 121 of the first location division 111 and second
Shape, structure it is roughly the same.When first shell 11, second housing 12 are combined, the first location division
111 are combined with the second auxiliary section 122, and the second location division 121 is combined with the first auxiliary section 112, cable
3 through the first shell 11, the host cavity of second housing 12 and by the first location division 111 and the second auxiliary section
122 fix, and are fixed by the second location division 121 with the first auxiliary section 112.First shell 11, second
Shell 12 can be bonded together by glue, in addition it is also possible to which the mode for extruding pretightning force by two parts is filled
With together, both can also be locked by screw.
Housing 1 is additionally provided with electric conductor (ginseng Fig. 3) on the surface that it is located at outside inner chamber, specifically, conductive
Body can be to be arranged at the first metal layer 114 or metal level of the first housing 11 and be arranged at the second housing 12
The second metal layer 124 or metal level, the metal layer 124 of the first metal layer 114 and second allows
Electric current passes through.Further, in the intermediate region of the first housing 11, the second housing 12, provided with all along housing
To the first interval trough 113 or interval region, the second interval trough 123 or interval region of extension, between first
Metal layer is not provided with separate slot 113, the second interval trough 123, so that the first metal layer 114, second
Metal layer 124 is interrupted by gap, and at least one is arranged in the first interval trough 113, the second interval trough 123
Capacity cell 7 is bridged, with the first interval trough 113, the first metal layer 114 of the both sides of the second interval trough 123,
Second metal layer 124 is electrically connected.
Further, the cable 3 includes some cored wires, the wire sheathing being coated on outside cored wire and position
Insulation sheath outside wire sheathing.Controllable impedance element 6 by the wire sheathing of cable 3 (not
Diagram) it is electrically connected with the first metal layer 114, the second metal layer 124, so that controllable impedance element
6 form antiresonant circuit together with capacity cell 7, by adjusting and arriving the parallel resonator circuit tuning
Desired resonant frequency calculates obtained electric capacity or inductance, it is necessary to calculate corresponding inductance and capacitance
Value is difficult to match completely in practice, what this size for being accomplished by inductance can change.
In one embodiment of the present of invention, and the inductance value of the controllable impedance element 6 in the present invention is adjustable, makes simultaneously
The resonant frequency of connection resonator circuit can reach 5MHZ or so.
It please join Fig. 4-6, controllable impedance element 6 can be obtained in the following manner：Set in the periphery of support 5
Helicla flute 51, for inductance will to be formed after the coiling of cable 3/be positioned in helicla flute 51, in support 5
Heart position sets the screw 52 axially extended, in addition one metallic rod 2 of assembling, the gold in screw 52
Category bar 2 is made up of electrically conductive non-magnetic material, can be graphite, copper or aluminium etc..The surface of metallic rod 2 enters one
Step is provided with screw thread, and it coordinates with screw 52.
Inductance is defined as the ability of the storage energy in magnetic field, and corresponding physics formula is：
Spiral inductance is used in patent Example of the present invention, spiral inductance is one kind of Wound-rotor type inductance
Form, corresponding physics formula is：
L=4 μr(πRn)2/l
L is the inductance value of inductance in above-mentioned formula；μrFor magnetic conductance rate coefficient；R is the coiling radius of spiral inductance；
N is the winding turns of spiral inductance；L is the length of spiral inductance.
Proportional relation, which is presented, according to inductance value in formula and magnetic conductivity can realize the regulation to the inductance value of inductance；Half
Under conditions of footpath R, winding turns n and length l are constant, magnetic permeability μrThe corresponding inductance value of increase also increases,
Otherwise it is also as the same.Specifically, can be come by controlling length of the metallic rod 2 inside controllable impedance element 6
Adjust the magnetic permeability μ of controllable impedance element 6rSize.The metallic rod 2 included when the inside of controllable impedance element 6
Length increase when, corresponding magnetic permeability μrAlso increase.
Further, through hole 115 is provided with shell body, the through hole 115 is connected with inner chamber, and it is described logical
Hole 115 aligns with the metallic rod 2 in left and right directions, in order to insert a tool into through hole 115 or inner chamber
In, to adjust length of the metallic rod 2 inside controllable impedance element 6.
In other embodiments, first controllable impedance element 6 spirally can be wound on a mould,
Then after inductance integrally being fixed or solidified, mould is separated with inductance., can be by through hole 115 under such a situation
Nut is set or is directly threaded on through hole 115, the metallic rod 2 is assembled on through hole 115, is led to
Cross rotation metallic rod 2, you can its length inside controllable impedance element 6 is adjusted, so as to adjust controllable impedance
The size of element 6.
In other another embodiments, a controllable impedance element can be obtained in the following manner, and there is provided one
Individual support 5 ', helicla flute 51 ' is provided with its periphery, and the center of support 5 ' is logical provided with what is axially extended
Hole 52 ', the cable 3, which is set around in helicla flute 51 ', forms controllable impedance element.Support 5 ' it is each
Provided with an otch 53 ' in helicla flute 51 ', otch 53 ' is connected with through hole 52 '.Cut by setting
Mouth 53 ', it is controllable to make the collapsing length in the axial direction of support 5 ', so that adjustment is wound in helicla flute accordingly
The size of controllable impedance element in 51 ', specifically, when support 5 ' is compressed, corresponding inductance becomes big,
When support 5 ' is flexible, corresponding inductance diminishes.Specifically, the screw rod 21 through through hole 52 ' can be passed through
And screw rod top nut 22 is assembled in, to control the stroke of support.Nut 22 is located at the outside of support 5 '.
In yet another embodiment, the number of turn of inductance on support 5 ' can be increased or decreased according to demand, to adjust electricity
The size of sense.
Another embodiment of the presently claimed invention, is on the basis of inductance is adjustable, to increase a tunable capacitor element,
The antiresonant circuit being made up of controllable impedance, tunable capacitor is formed, its physical circuit principle please join Fig. 2；
The tunable capacitor element, the resonant frequency of parallel resonator circuit can be adjusted to 1MHZ or so, and this can
Adjust the degree of regulation of capacity cell bigger.Inductance, electric capacity in the antiresonant circuit is adjustable, adjusts model
Enclose that bigger, regulative mode is more flexible, degree of regulation is also more preferable.
Electric capacity is defined as the ability of storage energy in the electric field.The plane of two electrodes or similar structure is present
Voltage difference.The size of capacitance depends on two electrodes or the area of similar structural plan；Two electrodes or
Height or thickness between the similar structural plan of person；It is filled in two interelectrode dielectric mediums.Electric capacity is corresponding
Physics formula is：
C is the capacitance of electric capacity；ε0For dielectric coefficient；εrFor dependent dielectric coefficient；A is area；D is thickness.
Patent of the present invention is to be presented according to capacitance in formula to two electrodes or the area of similar structural plan
Proportional relation is realized.Under conditions of dielectric coefficient and thickness are constant, electrode area increases corresponding electric capacity
Value also increases, otherwise also as the same.
As Figure 4-Figure 6, the electricity of first electrode plate 41 and second that tunable capacitor element 4 is set by relative spacing
Pole plate 42 is constituted.First electrode plate 41 is shaped as rectangle, and it is fixedly connected with the first housing 11.First
Battery lead plate 41 can include insulated substrate 411 and be attached to the metal layer insulated on the insulated substrate
412 or metal level.On the two ends or lateral margin of the metal layer 412 of first electrode plate 41 and the first housing 11
Metal layer is electrically connected.The middle section of the insulated substrate 411 is provided with circular hole 413.
Second electrode plate 42 is located at the lower section of perforate 413, with the first housing 11 to be flexibly connected, passes through circle
Hole 413 can see second electrode plate 42, and carry out translation or rotating operation to second electrode plate 42.Second
Battery lead plate 42 is shaped to circle, and internal diameter of the diameter more than circular hole 413 of second electrode plate 42.
Second electrode plate 42 can include insulated substrate 421 and be attached to the metallization insulated on the insulated substrate
Layer 422 or metal level.The metal layer 422 can be crescent, rectangle, triangle or trapezoidal etc. many
Side shape or battery lead plate capacity area becomes when can realize the first electrode plate and the second electrode plate relative motion
The figure of change.By rotating second electrode plate 42, thus it is possible to vary the metal layer 412 on first electrode plate 41
With the facing area of the metal layer 422 on second circuit board 42, and then change the electricity of tunable capacitor element 4
Capacitance.
The surface of first housing 11 is additionally provided with counterbore 116, for accommodating second electrode plate 42.Counterbore 116
For circle, its internal diameter is slightly larger than the diameter of second electrode plate 42, and its depth is slightly larger than second electrode plate 42
Thickness.For the ease of second electrode plate 42 is adjusted, adjustment portion is additionally provided with second electrode plate 42,
The adjustment portion for example could be arranged to adjustment hole 423, and the adjustment hole 423 can be from first electrode plate 41
Perforate 413 be touched, the adjustment portion may be arranged as other regulative modes, such as projection, raised line
Deng.
In summary, according to the present invention trapper, by controllable impedance it is in parallel with fixed capacity after formation
Resonance circuit, makes trapper reach good inhibiting effect in the working frequency points that nuclear-magnetism works.The present invention's falls into
Ripple device, is used while also by controllable impedance element with tunable capacitor element, trapper is worked in nuclear-magnetism
Working frequency points reach good inhibiting effect.Controllable impedance element, tunable capacitor element, it is simple in construction,
Regulation is easy to operate.
Although the present invention is disclosed as above with preferred embodiment, so it is not limited to the present invention, Ren Heben
Art personnel, without departing from the spirit and scope of the present invention, when a little modification can be made and perfect,
Therefore protection scope of the present invention is when by being defined that claims are defined.
Claims (10)
1. a kind of trapper for magnetic resonance imaging, it is characterised in that including：Housing, cable and adjustable electric
Hold element, the housing has inner chamber, and the tunable capacitor element is arranged on housing and positioned at inner chamber
Outside, the cable turns to controllable impedance element and is arranged in inner chamber, and the capacity cell with
Inductance element is connected in parallel.
2. trapper as claimed in claim 1, it is characterised in that the tunable capacitor element includes setting
On housing and relative spacing set first electrode plate and second electrode plate, the second electrode plate can phase
Rotated for first electrode plate or translation.
3. trapper as claimed in claim 1, it is characterised in that the first electrode plate and described second
Battery lead plate is metallic plate or the insulated substrate for being covered with metal layer, and the second electrode plate is small compared with first electrode plate.
4. trapper as claimed in claim 3, it is characterised in that the shape of the metallic plate or metal layer
Shape is crescent, rectangle, triangle or trapezoidal.
5. trapper as claimed in claim 1, it is characterised in that also including for supporting controllable impedance member
The support of part.
6. trapper as claimed in claim 5, it is characterised in that the support is provided with can for receiving
Adjust the helicla flute of inductance, and the adjustable length of support.
7. trapper as claimed in claim 5, it is characterised in that the support is provided with what is axially extended
Metal screws are assembled with screw, and screw.
8. trapper as claimed in claim 7, it is characterised in that the screw is electrically conductive non-magnetic material
It is made.
9. a kind of trapper for magnetic resonance imaging, it is characterised in that including：Housing, cable, support and
Capacity cell, the housing has inner chamber, and the capacity cell is arranged on housing and positioned at the outer of inner chamber
Face, the cable, which is wound on support, to be constituted controllable impedance element and is arranged in inner chamber, and support is provided with
The screw axially extended, and metal screws are assembled with screw, for adjusting the controllable impedance element
The size of inductance value, and the capacity cell is connected with controllable impedance element in parallel.
10. trapper as claimed in claim 9, it is characterised in that the housing is provided with through hole, institute
Through hole is stated to connect with inner chamber, and the through hole aligns with the metal screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610264546.7A CN107317562B (en) | 2016-04-26 | 2016-04-26 | Trap for magnetic resonance imaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610264546.7A CN107317562B (en) | 2016-04-26 | 2016-04-26 | Trap for magnetic resonance imaging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107317562A true CN107317562A (en) | 2017-11-03 |
| CN107317562B CN107317562B (en) | 2024-01-19 |
Family
ID=60184260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610264546.7A Active CN107317562B (en) | 2016-04-26 | 2016-04-26 | Trap for magnetic resonance imaging |
Country Status (1)
| Country | Link |
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| CN (1) | CN107317562B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737628A (en) * | 2020-12-30 | 2021-04-30 | 维沃移动通信有限公司 | Radio frequency circuit and electronic device |
| CN115938729A (en) * | 2023-01-02 | 2023-04-07 | 江苏晨朗电子集团有限公司 | Common-mode and differential-mode integrated flat coil filter inductor for resisting electromagnetic interference |
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| JPH06215950A (en) * | 1993-01-13 | 1994-08-05 | Matsushita Electric Ind Co Ltd | Coil and manufacture thereof |
| CN1109226A (en) * | 1993-10-14 | 1995-09-27 | 周符明 | Electric power generator and method therefor |
| CN1433032A (en) * | 2002-01-08 | 2003-07-30 | 雄鹰通讯股份有限公司 | Adjustable inductor |
| CN102890253A (en) * | 2011-07-21 | 2013-01-23 | 西门子公司 | Standing wave trap integrated in local coil |
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| CN204177948U (en) * | 2014-10-16 | 2015-02-25 | 西门子(深圳)磁共振有限公司 | Decoupling inductor assembly, RF receiving coil and MR imaging apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212659436U (en) * | 2020-07-05 | 2021-03-05 | 广州市德意电机有限公司 | Winding and trimming device for coil |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06215950A (en) * | 1993-01-13 | 1994-08-05 | Matsushita Electric Ind Co Ltd | Coil and manufacture thereof |
| CN1109226A (en) * | 1993-10-14 | 1995-09-27 | 周符明 | Electric power generator and method therefor |
| CN1433032A (en) * | 2002-01-08 | 2003-07-30 | 雄鹰通讯股份有限公司 | Adjustable inductor |
| CN102890253A (en) * | 2011-07-21 | 2013-01-23 | 西门子公司 | Standing wave trap integrated in local coil |
| CN103077829A (en) * | 2013-01-30 | 2013-05-01 | 慈溪市日益电容器厂 | Inner-series type self-healing capacitor serially connected with inductor and preparing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737628A (en) * | 2020-12-30 | 2021-04-30 | 维沃移动通信有限公司 | Radio frequency circuit and electronic device |
| CN115938729A (en) * | 2023-01-02 | 2023-04-07 | 江苏晨朗电子集团有限公司 | Common-mode and differential-mode integrated flat coil filter inductor for resisting electromagnetic interference |
| CN115938729B (en) * | 2023-01-02 | 2023-10-13 | 江苏晨朗电子集团有限公司 | Common-mode differential mode integrated flat coil filter inductor for resisting electromagnetic interference |
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| Publication number | Publication date |
|---|---|
| CN107317562B (en) | 2024-01-19 |
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