JPS61103105U - - Google Patents

Info

Publication number
JPS61103105U
JPS61103105U JP1984172130U JP17213084U JPS61103105U JP S61103105 U JPS61103105 U JP S61103105U JP 1984172130 U JP1984172130 U JP 1984172130U JP 17213084 U JP17213084 U JP 17213084U JP S61103105 U JPS61103105 U JP S61103105U
Authority
JP
Japan
Prior art keywords
magnetic field
coil
static magnetic
shim
subject
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
Application number
JP1984172130U
Other languages
English (en)
Other versions
JPH0246882Y2 (ja
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 filed Critical
Priority to JP1984172130U priority Critical patent/JPH0246882Y2/ja
Priority to US06/796,603 priority patent/US4700136A/en
Priority to DE19853540086 priority patent/DE3540086A1/de
Priority to GB08527842A priority patent/GB2167190B/en
Publication of JPS61103105U publication Critical patent/JPS61103105U/ja
Application granted granted Critical
Publication of JPH0246882Y2 publication Critical patent/JPH0246882Y2/ja
Expired legal-status Critical Current

Links

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
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/387—Compensation of inhomogeneities
    • G01R33/3875—Compensation of inhomogeneities using correction coil assemblies, e.g. active shimming

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Description

【図面の簡単な説明】
第１図は本考案に係るＮＭＲ画像装置の実施例
を示した図、第２図と第３図は被検体をスキヤン
する場合のイメージング領域の大きさを説明する
ための図、第４図はシムコイルの一般的な形状の
例を示した図、第５図はシムコイル制御回路の構
成例と各シムコイルとの接続例を示した図、第６
図は静磁場の分布状態を示した図、第７図は平面
や立体のイメージング領域例を示した図である。 １…静磁場コイル、２１〜２ｎ…シムコイル、
３…勾配磁場用コイル、４…受信コイル、５…送
信コイル、６…シムコイル制御回路、７…静磁場
コイル制御回路、８…勾配磁場用コイル制御回路
、９…発振器、１０…ゲート回路、１１…パワー
アンプ、１３…増幅器、１５…位相検波回路、１
７…ウエーブメモリ、１９…計算機、２２…シー
ケンスコントローラ、Ｃ１…コンピユータ、Ｍ１
…メモリ、Ｂ１〜Ｂｎ…電源。

Claims (1)

  1. 【実用新案登録請求の範囲】 磁場中に被検体をおき、核磁気共鳴現象を利用
    して、被検体内における特定原子核分布等を被検
    体外部より知るようにしたＮＭＲ画像装置におい
    て、 静磁場を発生させる静磁場コイルと、この静磁
    場コイルで生じる磁場の分布を補正する複数のシ
    ムコイルと、この各シムコイルにそれぞれ電流を
    流す電源と、各シムコイルに流す電流値を記憶す
    る記憶手段Ｍ１と、イメージング領域に関する情
    報を導入して前記記憶手段から適切な電流値を選
    び出して各シムコイルに流す電流を制御するコン
    ピユータとを備え、 少なくとも所定のイメージング領域については
    、充分な静磁場の均一度が得られるシムコイルの
    電流値を、予め前記記憶手段に格納するようにし
    たことを特徴とするＮＭＲ画像装置。
JP1984172130U 1984-11-13 1984-11-13 Expired JPH0246882Y2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1984172130U JPH0246882Y2 (ja) 1984-11-13 1984-11-13
US06/796,603 US4700136A (en) 1984-11-13 1985-11-08 NMR imaging apparatus
DE19853540086 DE3540086A1 (de) 1984-11-13 1985-11-12 Nmr-abbildungsgeraet
GB08527842A GB2167190B (en) 1984-11-13 1985-11-12 Nmr imaging apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984172130U JPH0246882Y2 (ja) 1984-11-13 1984-11-13

Publications (2)

Publication Number Publication Date
JPS61103105U true JPS61103105U (ja) 1986-07-01
JPH0246882Y2 JPH0246882Y2 (ja) 1990-12-11

Family

ID=15936119

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984172130U Expired JPH0246882Y2 (ja) 1984-11-13 1984-11-13

Country Status (4)

Country Link
US (1) US4700136A (ja)
JP (1) JPH0246882Y2 (ja)
DE (1) DE3540086A1 (ja)
GB (1) GB2167190B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007209749A (ja) * 2006-01-16 2007-08-23 Toshiba Corp 磁気共鳴イメージング装置および静磁場の補正方法
CN101256224A (zh) * 2007-02-26 2008-09-03 西门子公司 确定或匹配用于磁场均匀化的填隙片的方法及磁共振设备

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4879516A (en) * 1985-08-14 1989-11-07 Picker International, Inc. Precision electrical adjustment of quadrature coil isolation
DE3732660A1 (de) * 1986-09-29 1988-04-07 Toshiba Kawasaki Kk Magnetresonanz-abbildungssystem
US4945446A (en) * 1987-06-23 1990-07-31 Mitsubishi Denki Kabushiki Kaisha Magnetic field compensating apparatus
DE3730148A1 (de) * 1987-09-09 1989-03-30 Bruker Medizintech Verfahren zum erzeugen von spin-echo-impulsfolgen mit einem kernspin-tomographen und zur durchfuehrung des verfahrens ausgebildeter kernspin-tomograph
AU611231B2 (en) * 1987-11-05 1991-06-06 University Of Queensland, The Magnetic field homogenization in nmr spectroscopy
US5371465A (en) * 1991-03-13 1994-12-06 Hitachi, Ltd. Inspection method and apparatus using nuclear magnetic resonance (NMR)
US5250902A (en) * 1991-12-19 1993-10-05 Varian Associates, Inc. Reduction of gradient coil interaction with room temperature shims
US5602480A (en) * 1994-04-19 1997-02-11 Hitachi Medical Corporation Inspection method and apparatus using nuclear magnetic resonance
DE4437443C2 (de) * 1994-10-19 1996-09-12 Siemens Ag Verfahren zum Betrieb eines Kernspintomographiegerätes mit dynamisch lokalisierter Shimmung des Grundmagnetfeldes
US5818319A (en) * 1995-12-21 1998-10-06 The University Of Queensland Magnets for magnetic resonance systems
US6064208A (en) * 1998-04-02 2000-05-16 Picker International, Inc. Two-peak alignment method of field shimming
DE19844420C1 (de) * 1998-09-28 2000-04-13 Siemens Ag Verfahren zum Abgleich der Referenzfrequenz für den Sende- und Empfangskanal eines MR-Tomographiegerätes und MR-Tomographiegerät
IL126552A (en) * 1998-10-13 2007-06-03 Nds Ltd Remote administration of smart cards for secure access systems
DE19859489C2 (de) * 1998-12-22 2000-10-05 Siemens Ag Verfahren zur Shimmung eines Magnetsystems eines MR-Tomographiegeräts und MR-Tomographiegerät zur Durchführung des Verfahrens
AU2388100A (en) * 1998-12-23 2000-07-12 Peter D Jakab Magnetic resonance scanner with electromagnetic position and orientation tracking device
GB9904454D0 (en) * 1999-02-27 1999-04-21 Magnex Scient Limited Superconducting electromagnet apparatus
US6791327B2 (en) * 2002-12-19 2004-09-14 Ge Medical Systems Global Technology Company, Llc Method for reducing spin-lattice relaxation time of silicone fluids used in magnetic resonance imaging
WO2009072619A1 (ja) * 2007-12-06 2009-06-11 Kabushiki Kaisha Toshiba 磁気共鳴イメージング装置および磁気共鳴イメージング方法
US20120133365A1 (en) * 2010-11-26 2012-05-31 Mentis, Llc System of receive coils and pads for use with magnetic resonance imaging
CN105022011A (zh) * 2015-07-02 2015-11-04 江苏美时医疗技术有限公司 一种磁共振永磁体磁场补偿装置及其使用方法
KR102559010B1 (ko) 2016-08-05 2023-07-25 삼성전자주식회사 반도체 소자 제조방법

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523499A (en) * 1978-08-05 1980-02-19 Emi Ltd Method and apparatus for magnetogyric resonance test

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4623844A (en) * 1983-07-18 1986-11-18 Albert Macovski NMR inhomogeneity compensation system
US4585992A (en) * 1984-02-03 1986-04-29 Philips Medical Systems, Inc. NMR imaging methods
DE3508933A1 (de) * 1985-03-13 1986-10-09 Gebr. Knauf Westdeutsche Gipswerke, 8715 Iphofen Nichtbrennbare gipsbauplatte mit glasfaserlage

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523499A (en) * 1978-08-05 1980-02-19 Emi Ltd Method and apparatus for magnetogyric resonance test

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007209749A (ja) * 2006-01-16 2007-08-23 Toshiba Corp 磁気共鳴イメージング装置および静磁場の補正方法
CN101256224A (zh) * 2007-02-26 2008-09-03 西门子公司 确定或匹配用于磁场均匀化的填隙片的方法及磁共振设备

Also Published As

Publication number Publication date
US4700136A (en) 1987-10-13
GB2167190A (en) 1986-05-21
DE3540086A1 (de) 1986-05-22
GB2167190B (en) 1988-08-17
JPH0246882Y2 (ja) 1990-12-11
GB8527842D0 (en) 1985-12-18

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