IL97835A - Radio frequency field coil and power splitter for magnetic nuclear resonance - Google Patents
Radio frequency field coil and power splitter for magnetic nuclear resonanceInfo
- Publication number
- IL97835A IL97835A IL9783591A IL9783591A IL97835A IL 97835 A IL97835 A IL 97835A IL 9783591 A IL9783591 A IL 9783591A IL 9783591 A IL9783591 A IL 9783591A IL 97835 A IL97835 A IL 97835A
- Authority
- IL
- Israel
- Prior art keywords
- conductive
- radio frequency
- nmr
- frequency coil
- coil
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims description 22
- 239000004020 conductor Substances 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims 4
- 241000282326 Felis catus Species 0.000 claims 3
- 238000005481 NMR spectroscopy Methods 0.000 description 16
- 239000011888 foil Substances 0.000 description 12
- 238000003384 imaging method Methods 0.000 description 10
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 230000003068 static effect Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 239000011152 fibreglass Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005684 electric field Effects 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000010363 phase shift Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000002730 additional effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002595 magnetic resonance imaging Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/34046—Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils
-
- 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
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
- G01R33/3628—Tuning/matching of the transmit/receive coil
-
- 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
-
- 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
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
- G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
- G01R33/5659—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the RF magnetic field, e.g. spatial inhomogeneities of the RF magnetic field
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/513,921 US5132621A (en) | 1990-04-24 | 1990-04-24 | Radio frequency field coil and power splitter for nmr |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL97835A0 IL97835A0 (en) | 1992-06-21 |
| IL97835A true IL97835A (en) | 1994-04-12 |
Family
ID=24045121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL9783591A IL97835A (en) | 1990-04-24 | 1991-04-12 | Radio frequency field coil and power splitter for magnetic nuclear resonance |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5132621A (ja) |
| EP (1) | EP0454370A3 (ja) |
| JP (1) | JP2659626B2 (ja) |
| IL (1) | IL97835A (ja) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3110741B2 (ja) * | 1990-07-18 | 2000-11-20 | 株式会社東芝 | 磁気共鳴イメージング装置 |
| DE4221759C2 (de) * | 1991-10-11 | 1997-11-20 | Hitachi Medical Corp | Empfangsspulenvorrichtung für ein Kernspintomographiegerät |
| US5576622A (en) * | 1991-11-14 | 1996-11-19 | Fonar Corporation | Shielded NMR radio frequency coil and method of performing an NMR experiment |
| US5367261A (en) * | 1992-07-02 | 1994-11-22 | General Electric Company | Shield for a magnetic resonance imaging coil |
| WO1994001785A1 (en) * | 1992-07-10 | 1994-01-20 | Doty Scientific, Inc. | Solenoidal, octopolar, transverse gradient coils |
| US5554929A (en) * | 1993-03-12 | 1996-09-10 | Doty Scientific, Inc. | Crescent gradient coils |
| US5530355A (en) * | 1993-05-13 | 1996-06-25 | Doty Scientific, Inc. | Solenoidal, octopolar, transverse gradient coils |
| US5757187A (en) * | 1993-06-24 | 1998-05-26 | Wollin Ventures, Inc. | Apparatus and method for image formation in magnetic resonance utilizing weak time-varying gradient fields |
| US5412322A (en) * | 1993-06-24 | 1995-05-02 | Wollin Ventures, Inc. | Apparatus and method for spatially ordered phase encoding and for determining complex permittivity in magnetic resonance by using superimposed time-varying electric fields |
| US5483163A (en) * | 1993-08-12 | 1996-01-09 | The United States Of America As Represented By The Department Of Health And Human Services | MRI coil using inductively coupled individually tuned elements arranged as free-pivoting components |
| US6323648B1 (en) | 1997-11-26 | 2001-11-27 | Medrad, Inc. | Peripheral vascular array |
| US6107974A (en) * | 1998-10-21 | 2000-08-22 | Fonar Corporation | Apparatus and method of generating an RF field |
| DE19928452A1 (de) * | 1999-06-23 | 2000-12-28 | Siemens Ag | Antennensystem zum Empfang von Magnetresonanzsignalen |
| WO2006076739A2 (en) * | 2005-01-14 | 2006-07-20 | Invivo Corporation | High field rf head coil for homogeneous transmit and phased array receive mode operation in magnetic resonance imaging |
| WO2006076738A1 (en) * | 2005-01-14 | 2006-07-20 | Invivo Corporation | High-field mode-stable resonator for mri comprising additional resonant structure |
| EP1999479A1 (en) * | 2006-03-22 | 2008-12-10 | Koninklijke Philips Electronics N.V. | Shielded multix coil array for parallel high field mri |
| US7714581B2 (en) * | 2006-04-19 | 2010-05-11 | Wisconsin Alumni Research Foundation | RF coil assembly for magnetic resonance imaging and spectroscopy systems |
| US7508212B2 (en) | 2007-03-22 | 2009-03-24 | Wisconsin Alumni Research Foundation | RF coil assembly and method for practicing magnetization transfer on magnetic resonance imaging and spectroscopy systems |
| DE102008005994B4 (de) * | 2008-01-24 | 2012-03-29 | Siemens Aktiengesellschaft | Anordnung zur Ansteuerung einer Antennenanordnung |
| US8836333B2 (en) * | 2008-08-20 | 2014-09-16 | Koninklijke Philips N.V. | RF power splitter for magnetic resonance system |
| US8710839B2 (en) * | 2008-12-12 | 2014-04-29 | Yale University | O-space imaging: highly efficient parallel imaging using complementary nonlinear encoding gradient fields and receive coil geometries |
| US9423476B2 (en) * | 2011-04-13 | 2016-08-23 | New York University | Apparatus, systems and methods for facilitating signal excitation and/or reception in a magnetic resonance system |
| MX2014004533A (es) * | 2011-10-18 | 2014-08-01 | Koninkl Philips Nv | Ensamble de bobina de imagenes de resonancia magnetica (mri) con protector de radiofrecuencia conmutable entre un estado bloqueado y un estado transparente. |
| BR112014028136A2 (pt) * | 2012-05-14 | 2017-06-27 | Koninklijke Philips Nv | disposição de circuito de alimentação, sistema transmissor paralelo, e, método de comutação dos elementos de bobina de um sistema transmissor paralelo |
| CN104755950B (zh) | 2012-10-25 | 2019-03-22 | 皇家飞利浦有限公司 | 在磁共振(mr)成像系统中使用的具有单独控制的环形构件和横档的射频(rf)鸟笼式线圈 |
| WO2016058841A1 (en) * | 2014-10-16 | 2016-04-21 | Koninklijke Philips N.V. | Mri birdcage coil with distributed excitation |
| CN112230171B (zh) * | 2020-09-08 | 2022-11-25 | 上海联影医疗科技股份有限公司 | 磁共振接收机、磁共振系统和信号接收方法 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3133432A1 (de) * | 1981-08-24 | 1983-03-03 | Siemens AG, 1000 Berlin und 8000 München | Hochfrequenzfeld-einrichtung in einer kernspinresonanz-apparatur |
| US4694255A (en) * | 1983-11-04 | 1987-09-15 | General Electric Company | Radio frequency field coil for NMR |
| US4692705A (en) * | 1983-12-23 | 1987-09-08 | General Electric Company | Radio frequency field coil for NMR |
| FR2567647B1 (fr) * | 1984-07-10 | 1987-12-18 | Thomson Cgr | Dispositif de creation et/ou de reception d'un champ magnetique alternatif pour appareil exploitant la resonance magnetique nucleaire |
| US4680548A (en) * | 1984-10-09 | 1987-07-14 | General Electric Company | Radio frequency field coil for NMR |
| DE3522401A1 (de) * | 1985-06-22 | 1987-01-02 | Bruker Medizintech | Probenkopf fuer die nmr-tomographie |
| US4918388A (en) * | 1985-08-14 | 1990-04-17 | Picker International, Inc. | Quadrature surface coils for magnetic resonance imaging |
| IL77937A (en) * | 1986-02-20 | 1989-03-31 | Elscint Ltd | Hybrid resonator |
| US4752736A (en) * | 1986-07-22 | 1988-06-21 | The Regents Of The University Of California | Center fed QD MRI RF coil |
| JPS6443240A (en) * | 1987-08-11 | 1989-02-15 | Mitsubishi Electric Corp | High frequency coil apparatus |
| US4857849A (en) * | 1987-03-25 | 1989-08-15 | Mitsubishi Denki Kabushiki Kaisha | High frequency magnetic field generator for nuclear magnetic resonance |
| JPS63235851A (ja) * | 1987-03-25 | 1988-09-30 | Mitsubishi Electric Corp | 磁気共鳴用高周波磁界発生装置 |
| US4763074A (en) * | 1987-04-01 | 1988-08-09 | Kabushiki Kaisha Toshiba | Automatic tuning circuit for magnetic resonance quadrature antenna system |
| US4751464A (en) * | 1987-05-04 | 1988-06-14 | Advanced Nmr Systems, Inc. | Cavity resonator with improved magnetic field uniformity for high frequency operation and reduced dielectric heating in NMR imaging devices |
| US4799016A (en) * | 1987-07-31 | 1989-01-17 | General Electric Company | Dual frequency NMR surface coil |
| NL8701949A (nl) * | 1987-08-19 | 1989-03-16 | Philips Nv | Magnetisch resonantie apparaat met geintegreerde gradient-rf spoelen. |
| IL85785A (en) * | 1988-03-18 | 1991-07-18 | Elscint Ltd | Quadrature surface coil for resonance spectroscopy or imaging system |
| EP0361190A1 (de) * | 1988-09-23 | 1990-04-04 | Siemens Aktiengesellschaft | Oberflächenspulenanordnung für Untersuchungen mit Hilfe der kernnmagnetischen Resonanz |
| NL8802608A (nl) * | 1988-10-24 | 1990-05-16 | Philips Nv | Magnetisch resonantie apparaat met verbeterde rf spoel. |
-
1990
- 1990-04-24 US US07/513,921 patent/US5132621A/en not_active Expired - Lifetime
-
1991
- 1991-04-12 IL IL9783591A patent/IL97835A/en not_active IP Right Cessation
- 1991-04-19 EP EP19910303511 patent/EP0454370A3/en not_active Withdrawn
- 1991-04-23 JP JP3117876A patent/JP2659626B2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| IL97835A0 (en) | 1992-06-21 |
| EP0454370A2 (en) | 1991-10-30 |
| JP2659626B2 (ja) | 1997-09-30 |
| JPH05113473A (ja) | 1993-05-07 |
| EP0454370A3 (en) | 1992-01-22 |
| US5132621A (en) | 1992-07-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| KB | Patent renewed | ||
| KB | Patent renewed | ||
| KB | Patent renewed | ||
| MM9K | Patent not in force due to non-payment of renewal fees |