JP3645368B2 - 磁気共鳴イメージングシステム - Google Patents

磁気共鳴イメージングシステム Download PDF

Info

Publication number
JP3645368B2
JP3645368B2 JP22901096A JP22901096A JP3645368B2 JP 3645368 B2 JP3645368 B2 JP 3645368B2 JP 22901096 A JP22901096 A JP 22901096A JP 22901096 A JP22901096 A JP 22901096A JP 3645368 B2 JP3645368 B2 JP 3645368B2
Authority
JP
Japan
Prior art keywords
sides
coil
loops
loop
imaging region
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.)
Expired - Fee Related
Application number
JP22901096A
Other languages
English (en)
Japanese (ja)
Other versions
JPH09164126A5 (enExample
JPH09164126A (ja
Inventor
レオン・カウフマン
ジョーゼフ・ダブリュ・カールソン
バリー・マッカーテン
スティーブン・クラスノー
ウイリアム・ケー・エム・ルー
ミツアキ・アラカワ
ケビン・エー・ダービー
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba America MRI Inc
Original Assignee
Toshiba America MRI Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba America MRI Inc filed Critical Toshiba America MRI Inc
Publication of JPH09164126A publication Critical patent/JPH09164126A/ja
Publication of JPH09164126A5 publication Critical patent/JPH09164126A5/ja
Application granted granted Critical
Publication of JP3645368B2 publication Critical patent/JP3645368B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

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
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/3806—Open magnet assemblies for improved access to the sample, e.g. C-type or U-type magnets

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
JP22901096A 1995-08-29 1996-08-29 磁気共鳴イメージングシステム Expired - Fee Related JP3645368B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US520748 1995-08-29
US08/520,748 US5663645A (en) 1994-08-02 1995-08-29 Spatially orthogonal rectangular coil pair suitable for vertical magnetic field MRI system

Publications (3)

Publication Number Publication Date
JPH09164126A JPH09164126A (ja) 1997-06-24
JPH09164126A5 JPH09164126A5 (enExample) 2004-09-02
JP3645368B2 true JP3645368B2 (ja) 2005-05-11

Family

ID=24073907

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22901096A Expired - Fee Related JP3645368B2 (ja) 1995-08-29 1996-08-29 磁気共鳴イメージングシステム

Country Status (3)

Country Link
US (1) US5663645A (enExample)
JP (1) JP3645368B2 (enExample)
GB (1) GB2304900A (enExample)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5939883A (en) * 1996-07-17 1999-08-17 Fonar Corporation Magnetic resonance imaging excitation and reception methods and apparatus
US6011393A (en) * 1997-06-26 2000-01-04 Toshiba America Mri, Inc. Self-supporting RF coil for MRI
US5977771A (en) * 1997-11-03 1999-11-02 Picker International, Inc. Single gradient coil configuration for MRI systems with orthogonal directed magnetic fields
US6144203A (en) * 1997-11-28 2000-11-07 Hitachi Medical Corporation Coil harness assembly for interventional MRI application
US6029081A (en) * 1998-03-19 2000-02-22 Picker International, Inc. Movable magnets for magnetic resonance surgery
US6249121B1 (en) 1999-05-17 2001-06-19 General Electric Company RF body coil
DE10116802C1 (de) * 2001-04-04 2002-10-02 Siemens Ag RF-Antenne für ein offenes MR-System
JP3727601B2 (ja) * 2002-03-05 2005-12-14 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 磁気共鳴イメージング装置
DE102004003535B3 (de) * 2004-01-23 2005-10-13 Siemens Ag Erzeuger eines zeitvariablen Magnetfelds eines Magnetresonanzgeräts und Magnetresonanzgerät mit einem derartigen Erzeuger eines zeitvariablen Magnetfelds
US8823221B1 (en) 2012-09-26 2014-09-02 The United States Of America As Represented By The Secretary Of The Navy Optimized galfenol-type magnetostrictive actuator
WO2015102434A1 (ko) * 2014-01-03 2015-07-09 삼성전자 주식회사 알에프 코일

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8321295D0 (en) * 1983-08-08 1983-09-07 Redpath T W T Magnetic coils
GB8321308D0 (en) * 1983-08-08 1983-09-07 M & D Technology Ltd Radio frequency coil
EP0170514B1 (en) * 1984-07-31 1990-09-19 Oxford Research Systems Limited Method and apparatus for obtaining n.m.r. spectra and coils for use therein
US4918388A (en) * 1985-08-14 1990-04-17 Picker International, Inc. Quadrature surface coils for magnetic resonance imaging
US4784146A (en) * 1986-08-14 1988-11-15 University Of Florida Angled segment receiver coil for NMR imaging of a human head
US4766383A (en) * 1987-02-24 1988-08-23 Kabushiki Kaisha Toshiba Quadrature antenna for magnetic resonance imaging using elliptical coils
JPH0197443A (ja) * 1987-10-12 1989-04-14 Hitachi Ltd Ｎｍｒ用高周波コイル装置
GB2221995B (en) * 1988-08-19 1992-12-09 Picker Int Ltd Magnetic resonance methods and apparatus
US5134374A (en) * 1989-06-01 1992-07-28 Applied Superconetics Magnetic field control apparatus
US5003276A (en) * 1989-08-11 1991-03-26 General Atomics Method of site shimming on permanent magnets
DE4024582C2 (de) * 1989-08-16 1996-08-14 Siemens Ag Hochfrequenz-Antenne eines Kernspintomographen
EP0430103B1 (en) * 1989-11-24 1995-06-14 Kabushiki Kaisha Toshiba Receiver coil for nuclear magnetic resonance imaging apparatus
US5245286A (en) * 1991-04-18 1993-09-14 The Regents Of The University Of California Apparatus and method for stabilizing the background magnetic field during mri
US5510714A (en) * 1991-08-09 1996-04-23 Hitachi, Ltd. Magnetic resonance imaging apparatus and RF coil employed therein
DE4128323C2 (de) * 1991-08-27 1995-08-24 Siemens Ag Zirkular polarisierende Lokalantenne für ein Kernspinresonanz-Bildgerät
US5457386A (en) * 1991-11-26 1995-10-10 Hitachi, Ltd. Multiple-coil adopting a quadrature detection method applied thereto and a signal processing circuit employing the same in an MRI apparatus in a vertical magnetic system
US5270656A (en) * 1992-04-24 1993-12-14 The Trustees Of The University Of Pennsylvania Biplanar RF coils for magnetic resonance imaging or spectroscopy
DE4232884C2 (de) * 1992-09-30 1997-10-16 Siemens Ag Antennenanordnung für ein Kernspinresonanzgerät
US5517120A (en) * 1993-11-24 1996-05-14 Medrad, Inc. Quadrature coil for neurovascular imaging and spectroscopy of the human anatomy
US5370118A (en) * 1993-12-23 1994-12-06 Medical Advances, Inc. Opposed loop-pair quadrature NMR coil
US5539314A (en) * 1994-12-01 1996-07-23 The Regents Of The University Of California RF shield for four-post vertical field magnet used for MRI

Also Published As

Publication number Publication date
US5663645A (en) 1997-09-02
GB9616687D0 (en) 1996-09-25
GB2304900A (en) 1997-03-26
JPH09164126A (ja) 1997-06-24

Similar Documents

Publication Publication Date Title
US6437567B1 (en) Radio frequency coil for open magnetic resonance imaging system
US5185576A (en) Local gradient coil
EP0151745B1 (en) Radio frequency field coil for nmr
US6847210B1 (en) MRI antenna
US4694255A (en) Radio frequency field coil for NMR
US8035382B2 (en) Coil decoupling in magnetic resonance imaging
EP0301232B1 (en) Dual frequency NMR surface coil
JPH02249531A (ja) 核磁気共鳴方法および装置
JP3645368B2 (ja) 磁気共鳴イメージングシステム
US8179136B2 (en) Radio frequency (RF) coil array with double asymmetric saddle coil pairs
US8188737B2 (en) MRI compatible radio frequency (RF) coil, with each rung of the RF coil containing a plurality of individual parallel wires internally
JP2000157512A (ja) 磁気共鳴映像法のための直角位相ｒｆ面コイル
US20030020475A1 (en) RF coil system for an MR apparatus
US6441615B1 (en) Crossed-ladder RF coils for vertical field MRI systems
US6028429A (en) Composite MRI antenna with reduced stray capacitance
JPH1156814A (ja) 磁気共鳴イメージング装置用の自立型高周波コイル
JPS60257352A (ja) 核磁気共鳴装置
US6661229B2 (en) RF birdcage coil with reduced acoustic noise
US4784146A (en) Angled segment receiver coil for NMR imaging of a human head
EP0620922B1 (en) Local transverse mri gradient coil
JPS63122443A (ja) 核磁気共鳴断層撮影のための表面共振器
JP2002159471A (ja) 磁気共鳴画像化装置及びその方法
KR100416947B1 (ko) 자기 공명 영상장치의 고주파 코일
JP2002119495A (ja) Ｒｆコイルアセンブリ
EP4279939A1 (en) Static field magnet and mri apparatus

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20041216

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20050104

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20050203

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080210

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090210

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090210

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100210

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110210

Year of fee payment: 6

LAPS Cancellation because of no payment of annual fees