JP4237735B2 - 共振器システム - Google Patents
共振器システム Download PDFInfo
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- JP4237735B2 JP4237735B2 JP2005214797A JP2005214797A JP4237735B2 JP 4237735 B2 JP4237735 B2 JP 4237735B2 JP 2005214797 A JP2005214797 A JP 2005214797A JP 2005214797 A JP2005214797 A JP 2005214797A JP 4237735 B2 JP4237735 B2 JP 4237735B2
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Images
Classifications
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- 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
- G01R33/34076—Birdcage 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
- G01R33/34—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
- G01R33/34—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
- G01R33/34061—Helmholtz 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
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/34007—Manufacture of RF coils, e.g. using printed circuit board technology; additional hardware for providing mechanical support to the RF coil assembly or to part thereof, e.g. a support for moving the coil assembly relative to the remainder of the MR system
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- 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
- G01R33/34015—Temperature-controlled RF coils
- G01R33/34023—Superconducting RF 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
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/34092—RF coils specially adapted for NMR spectrometers
Description
b.測定容積での磁場を個別共振器の特定の幾何的配置で最大に均一化可能にする電流I0の計算
c.所望の共振モードについての、共振器システムでの電流分布の計算および測定容積での磁場の計算
d.個別共振器の導体要素における平均電流の計算
e.個別共振器の固有共鳴の補正、ここで、これらの変化は値I0からの電流のそれぞれのずれに略比例する
f.測定容積における磁場の均一性が最大になるまでステップbないしステップeを繰り返す。
2 個別共振器
3 磁力線
4a、4b (+)方向電流及び(−)方向電流
5a、5b 導体部
6 遠隔RF磁場
7 有効RF磁場
8 窓
9 補償コイル
10 上縁
11 下縁
12 導体要素
13 U字状導体要素
14 コーティングされた基板の上側
15 コーティングされた基板の下側
101 導体路
102 チューブ状要素
103 バー部材
104 蛇行導体構造
105 個別共振器
106 個別共振器の電極間容量
107 2つの隣接する個別共振器間の容量
108 空気/真空ギャップ
109 導体
110 基板
111 個別共振器
112 測定容積
113 コンポーネント
114 電流(+)による発生磁場
115 電流(−)による発生磁場
116 導体
117 遠隔RF磁場
118 有効RF磁場
Claims (9)
- 核磁気共鳴(MR)装置の測定容積内にラジオ周波数(RF)磁場を発生する共振器システムであって、z軸を中心軸とする前記測定容積を包囲すると共に平坦な誘電体基板(1)に前記z軸まわりに配設されたN個の個別共振器(2)を含み、前記個別共振器(2)は窓(8)を有し、各窓を通して前記個別共振器(2)の単一動作中に1つの個別磁場が前記測定容積に発生され、前記個別共振器(2)が協同することにより1つの有効RF磁場(7)が前記測定容積に発生され、遠隔RF磁場(6)が前記共振器システムの外側遠くに発生され、前記有効RF磁場(7)の空間分布は前記z軸を含む第1の平面(A)に関して実質的に鏡像対称であり、前記遠隔RF磁場(6)の空間分布は前記z軸を含む第2の平面(B)に関して実質的に鏡像対称であり、前記有効RF磁場(7)は前記測定容積において前記第1の平面と実質的に平行に延び、個別共振器(2)の個数はN>4であり、1つ以上の時点における前記共振器システムの動作中、少なくとも1つの個別共振器(2)の基板平面が測定容積における前記有効RF磁場(7)の方向に対して40°より大きい角度を張り、少なくとも1つの別の個別共振器(2)が前記測定容積における前記有効RF磁場(7)の方向に対して40°より小さい角度を張り、前記第1の平面(A)の前記第2の平面(B)に対する角度が0°又は360°/(N+1)未満である共振器システム。
- 前記個別共振器(2)が超伝導材料を含む請求項1記載の共振器システム。
- 前記個別共振器(2)または個別共振器(2)のグループが前記z軸に関してその個数に対応してN重回転対称に配置される請求項1または2に記載の共振器システム。
- 前記個別共振器(2)は多面体の表面に配置され、または、前記個別共振器(2)は前記基板(1)の表面法線が前記z軸を中心とする円の半径方向に直交する接線の成分を有するように配置され、または、前記個別共振器(2)は前記基板(1)の表面法線が前記接線の方向を向くよう星状に半径方向外方に配置される請求項1乃至3のいずれか1項に記載の共振器システム。
- 個別共振器(2)は、スパイラル共振器及び又は分布容量を有する共振器及び又は局所容量を有する共振器及び又は両側共振器である請求項1乃至4のいずれか1項に記載の共振器システム。
- 幾つかの個別共振器(2)が、発生RF磁場をz方向にアクティブシールドするためにz方向に沿って配設され、または、発生RF磁場をアクティブシールドするためにz方向と直交するxy平面で半径方向に入れ子にされる請求項1乃至5のいずれか1項に記載の共振器システム。
- 1つ以上の個別共振器(2)が設けられた幾つかの基板(1)が、z方向及び又は半径方向に積み重ねられ又は入れ子にされる請求項1乃至6のいずれか1項に記載の共振器システム。
- 前記個別共振器(2)の少なくとも1つが、その他の個別共振器と別の共振周波数を有する請求項1乃至7のいずれか1項に記載の共振器システム。
- 前記個別共振器(2)の少なくとも1つが、誘導的及び又は容量的及び又は直流的に結合している請求項1乃至8のいずれか1項に記載の共振器システム。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004035851A DE102004035851B4 (de) | 2004-07-23 | 2004-07-23 | Resonatorsystem zur Erzeugung eines Hochfrequenz-Magnetfelds |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006038861A JP2006038861A (ja) | 2006-02-09 |
JP4237735B2 true JP4237735B2 (ja) | 2009-03-11 |
Family
ID=35395892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005214797A Active JP4237735B2 (ja) | 2004-07-23 | 2005-07-25 | 共振器システム |
Country Status (4)
Country | Link |
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US (1) | US7193418B2 (ja) |
EP (1) | EP1626286A1 (ja) |
JP (1) | JP4237735B2 (ja) |
DE (1) | DE102004035851B4 (ja) |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102983639B (zh) | 2005-07-12 | 2016-01-27 | 麻省理工学院 | 无线非辐射能量传递 |
US7825543B2 (en) | 2005-07-12 | 2010-11-02 | Massachusetts Institute Of Technology | Wireless energy transfer |
DE102006011254B4 (de) * | 2006-03-10 | 2009-01-29 | Siemens Ag | Magnetresonanzanlage mit supraleitender Ganzkörper-Empfangsanordnung |
DE102006055136B4 (de) * | 2006-11-22 | 2010-05-06 | Siemens Ag | Hochfrequenzspulenanordnung und Magnetresonanzgerät |
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US20100277121A1 (en) * | 2008-09-27 | 2010-11-04 | Hall Katherine L | Wireless energy transfer between a source and a vehicle |
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US20130178366A1 (en) * | 2012-01-05 | 2013-07-11 | Agilent Technologies, Inc. | Nuclear magnetic resonance probe comprising infrared reflection patches |
US9151787B2 (en) * | 2012-01-13 | 2015-10-06 | The United States Of America As Represented By The Secretary Of The Army | Method and apparatus for the measurement of radio-frequency electric permittivity by a meander-line ring resonator |
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WO2017136491A1 (en) | 2016-02-02 | 2017-08-10 | Witricity Corporation | Controlling wireless power transfer systems |
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US11031818B2 (en) | 2017-06-29 | 2021-06-08 | Witricity Corporation | Protection and control of wireless power systems |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8814187D0 (en) | 1988-06-15 | 1988-07-20 | Mansfield P | Improvements in/relating to surface electrical coil structures |
US5576622A (en) | 1991-11-14 | 1996-11-19 | Fonar Corporation | Shielded NMR radio frequency coil and method of performing an NMR experiment |
US5594342A (en) * | 1992-06-01 | 1997-01-14 | Conductus, Inc. | Nuclear magnetic resonance probe coil with enhanced current-carrying capability |
US5351007A (en) * | 1992-06-01 | 1994-09-27 | Conductus, Inc. | Superconducting magnetic resonance probe coil |
US5585723A (en) * | 1995-03-23 | 1996-12-17 | Conductus, Inc. | Inductively coupled superconducting coil assembly |
US5276398A (en) * | 1992-06-01 | 1994-01-04 | Conductus, Inc. | Superconducting magnetic resonance probe coil |
US5565778A (en) * | 1992-06-01 | 1996-10-15 | Conductus, Inc. | Nuclear magnetic resonance probe coil |
US5532595A (en) * | 1994-04-18 | 1996-07-02 | Picker International, Inc. | Three-dimensional spiral echo volume imaging |
DE19733574C2 (de) * | 1997-08-02 | 2000-04-06 | Bruker Ag | Supraleitender Hybrid-Resonator für den Empfang für NMR-Signalen |
AU5441100A (en) * | 1999-05-19 | 2000-12-05 | Intermagnetics General Corporation | Magnetically equivalent rf coil arrays |
US6377047B1 (en) * | 2000-06-08 | 2002-04-23 | Varian, Inc. | Superconducting birdcage coils |
US6556013B2 (en) * | 2001-03-09 | 2003-04-29 | Bruker Biospin Corp. | Planar NMR coils with localized field-generating and capacitive elements |
DE10118835C2 (de) * | 2001-04-17 | 2003-03-13 | Bruker Biospin Ag Faellanden | Supraleitende Resonatoren für Anwendungen in der NMR |
US6590394B2 (en) * | 2001-09-28 | 2003-07-08 | Varian, Inc. | NMR probe with enhanced power handling ability |
AU2003284964A1 (en) | 2002-10-24 | 2004-05-13 | The University Of Houston System | Superconducting array of surface mri probes |
US7859264B2 (en) | 2004-01-20 | 2010-12-28 | The University Of Houston | Superconducting loop, saddle and birdcage MRI coils capable of simultaneously imaging small nonhuman animals |
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JP2006038861A (ja) | 2006-02-09 |
US20060017440A1 (en) | 2006-01-26 |
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