JP4050828B2 - 周辺アクセスおよび非均質磁場を有する磁気共鳴像映システム - Google Patents

周辺アクセスおよび非均質磁場を有する磁気共鳴像映システム Download PDF

Info

Publication number
JP4050828B2
JP4050828B2 JP21955698A JP21955698A JP4050828B2 JP 4050828 B2 JP4050828 B2 JP 4050828B2 JP 21955698 A JP21955698 A JP 21955698A JP 21955698 A JP21955698 A JP 21955698A JP 4050828 B2 JP4050828 B2 JP 4050828B2
Authority
JP
Japan
Prior art keywords
magnetic field
magnet
region
base
upright
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
JP21955698A
Other languages
English (en)
Japanese (ja)
Other versions
JPH1199139A5 (enExample
JPH1199139A (ja
Inventor
エイチ．ローズ，ジュニア． フリーマン
コルネリウス ウェイン
ダブリュ．クラウリイ クリストファー
Original Assignee
マグネブ
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 マグネブ filed Critical マグネブ
Publication of JPH1199139A publication Critical patent/JPH1199139A/ja
Publication of JPH1199139A5 publication Critical patent/JPH1199139A5/ja
Application granted granted Critical
Publication of JP4050828B2 publication Critical patent/JP4050828B2/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
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/383—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using permanent magnets
    • 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)
JP21955698A 1997-06-27 1998-06-29 周辺アクセスおよび非均質磁場を有する磁気共鳴像映システム Expired - Fee Related JP4050828B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US884415 1997-06-27
US08/884,415 US5935065A (en) 1997-06-27 1997-06-27 MRI system with peripheral access and inhomogeneous field

Publications (3)

Publication Number Publication Date
JPH1199139A JPH1199139A (ja) 1999-04-13
JPH1199139A5 JPH1199139A5 (enExample) 2005-10-20
JP4050828B2 true JP4050828B2 (ja) 2008-02-20

Family

ID=25384580

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21955698A Expired - Fee Related JP4050828B2 (ja) 1997-06-27 1998-06-29 周辺アクセスおよび非均質磁場を有する磁気共鳴像映システム

Country Status (8)

Country Link
US (1) US5935065A (enExample)
EP (1) EP0887655B1 (enExample)
JP (1) JP4050828B2 (enExample)
AR (1) AR010921A1 (enExample)
AU (1) AU746820B2 (enExample)
BR (1) BR9815758A (enExample)
CA (1) CA2239803A1 (enExample)
DE (1) DE69822709T2 (enExample)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2357149A (en) 1999-12-08 2001-06-13 Topspin Medical MRI using non-homogeneous static field
US6704594B1 (en) 2000-11-06 2004-03-09 Topspin Medical (Israel) Limited Magnetic resonance imaging device
WO2002082116A1 (en) 2001-04-09 2002-10-17 The Regents Of The University Of California Method and apparatus for high resolution ex-situ nmr spectroscopy
WO2003016951A1 (en) * 2001-08-14 2003-02-27 The Regents Of The University Of California Method and apparatus for high resolution ex-situ nmr spectroscopy
US8164802B2 (en) * 2002-09-13 2012-04-24 Douglas Pedley Device, system, and method for scanning paper media
AU2003298479A1 (en) * 2003-01-21 2004-08-13 Koninklijke Philips Electronics N.V. Magnetic resonance method with non-linear magnetic field gradients
WO2006028588A2 (en) 2004-07-22 2006-03-16 The Regents Of The University Of California Nuclear magnetic resonance detection in inhomogeneous magnetic fields
US7187169B2 (en) 2004-11-03 2007-03-06 The Regents Of The University Of California NMR and MRI apparatus and method
USD549826S1 (en) * 2004-11-09 2007-08-28 Neomax Co., Ltd. Magnetic field generating device for use in magnetic resonance imaging
CN100563752C (zh) * 2005-01-31 2009-12-02 重庆融海超声医学工程研究中心有限公司 Mri引导的超声波治疗装置
US7274192B2 (en) * 2005-05-31 2007-09-25 General Electric Company Combined open and closed magnet configuration for MRI
EP2795343A4 (en) * 2011-11-23 2015-08-19 Jutta Gaguen METHOD AND SYSTEM FOR MEASURING THE RELATIVE SPEED BETWEEN A VEHICLE AND THE SURROUNDING ATMOSPHERE
EP2877089B1 (en) 2012-07-27 2022-05-18 University Health Network Radiotherapy system integrating a radiation source with a magnetic resonance imaging apparatus with movable magnet components
US9713664B2 (en) 2013-03-15 2017-07-25 Fresenius Medical Care Holdings, Inc. Nuclear magnetic resonance module for a dialysis machine
US9597439B2 (en) 2013-03-15 2017-03-21 Fresenius Medical Care Holdings, Inc. Medical fluid sensing and concentration determination using radio frequency energy and a magnetic field
US9772386B2 (en) 2013-03-15 2017-09-26 Fresenius Medical Care Holdings, Inc. Dialysis system with sample concentration determination device using magnet and radio frequency coil assemblies
US9566377B2 (en) 2013-03-15 2017-02-14 Fresenius Medical Care Holdings, Inc. Medical fluid sensing and concentration determination in a fluid cartridge with multiple passageways, using a radio frequency device situated within a magnetic field
US9433718B2 (en) 2013-03-15 2016-09-06 Fresenius Medical Care Holdings, Inc. Medical fluid system including radio frequency (RF) device within a magnetic assembly, and fluid cartridge body with one of multiple passageways disposed within the RF device, and specially configured cartridge gap accepting a portion of said RF device
US10286135B2 (en) 2014-03-28 2019-05-14 Fresenius Medical Care Holdings, Inc. Measuring conductivity of a medical fluid
WO2019108902A1 (en) 2017-12-01 2019-06-06 Deka Products Limited Partnership System and method for characterising bioreactor fluids using a magnetic resonance apparatus

Family Cites Families (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51127785A (en) * 1975-04-30 1976-11-08 Hokkaido Daigaku Measuring method of information around the surface of the substances t o be measured applying the nucleus magnet resonance phenomenon
US4296378A (en) * 1979-04-05 1981-10-20 Southwest Research Institute Apparatus providing enhanced detection of specimens in inhomogeneous fields
US4379262A (en) * 1979-08-10 1983-04-05 Picker International Limited Nuclear magnetic resonance systems
IL68344A (en) * 1983-04-10 1988-10-31 Yeda Res & Dev Method to eliminate the effects of magnetic field inhomogeneities in nmr imaging
US4542343A (en) * 1983-06-17 1985-09-17 Chevron Research Company Computer-controlled, portable pulsed NMR instrument and method of use wherein depolarization is ultrashortened using pseudo randomly spaced and oriented RF depolarization pulses
US4721914A (en) * 1984-05-01 1988-01-26 The United States Of America As Represented By The United States Department Of Energy Apparatus for unilateral generation of a homogeneous magnetic field
US4684891A (en) * 1985-07-31 1987-08-04 The Regents Of The University Of California Rapid magnetic resonance imaging using multiple phase encoded spin echoes in each of plural measurement cycles
JPS62117541A (ja) * 1985-11-18 1987-05-29 株式会社東芝 磁気共鳴イメ−ジング装置
US4733190A (en) * 1987-03-16 1988-03-22 Medical Advances, Inc. NMR local coil with adjustable spacing
US5320103A (en) * 1987-10-07 1994-06-14 Advanced Techtronics, Inc. Permanent magnet arrangement
US4998976A (en) * 1987-10-07 1991-03-12 Uri Rapoport Permanent magnet arrangement
US4985678A (en) * 1988-10-14 1991-01-15 Picker International, Inc. Horizontal field iron core magnetic resonance scanner
US5207224A (en) * 1988-12-09 1993-05-04 Picker International, Ltd. Magnetic resonance apparatus
DE3917619A1 (de) * 1989-05-31 1990-12-06 Philips Patentverwaltung Spulenanordnung fuer die volumenselektive kernresonanz-spektroskopie
DE4038106C2 (de) * 1989-12-12 2002-04-18 Siemens Ag Oberflächenresonator für einen Kernspintomographen
US5057777A (en) * 1990-04-26 1991-10-15 North American Philips Corporation Quadrature coil construction
US5194809A (en) * 1990-06-30 1993-03-16 Lew Hyok S Nmr-scope
US5117188A (en) * 1990-10-29 1992-05-26 General Atomics Quasi-open magnet configuration for use in magnetic resonance imaging
GB9206014D0 (en) * 1992-03-19 1992-04-29 Oxford Instr Ltd Magnet assembly
JPH06121779A (ja) * 1992-10-12 1994-05-06 Toshiba Corp 磁気共鳴イメージング装置
DE69316837T2 (de) * 1992-11-10 1998-07-30 Koninkl Philips Electronics Nv Apparat mittels magnetischer Resonanz mit Lärmunterdrückung
US5304930A (en) * 1993-02-01 1994-04-19 Panacea Medical Laboratories Remotely positioned MRI system
US5361764A (en) * 1993-07-09 1994-11-08 Grumman Aerospace Corporation Magnetic resonance imaging foot coil assembly
US5390673A (en) * 1994-01-14 1995-02-21 Cordata, Incorporated Magnetic resonance imaging system
US5495222A (en) * 1994-04-15 1996-02-27 New York University Open permanent magnet structure for generating highly uniform field
US5500596A (en) * 1994-04-28 1996-03-19 Wisconsin Alumni Research Foundation Local coil array for magnetic resonance imaging of the lower extremities
US5402094A (en) * 1994-08-15 1995-03-28 Enge; Harald A. MRI mammography magnet
US5502387A (en) * 1994-08-23 1996-03-26 Northrop Grumman Corporation Variable geometry MRI coil
DE19709297A1 (de) * 1996-03-27 1997-07-24 Siemens Ag Magnetsystem für ein diagnostisches Magnetresonanzgerät
US5675305A (en) * 1996-07-17 1997-10-07 Picker International, Inc. Multiple driven C magnet

Also Published As

Publication number Publication date
DE69822709D1 (de) 2004-05-06
CA2239803A1 (en) 1998-12-27
EP0887655A3 (en) 2000-03-15
AU746820B2 (en) 2002-05-02
DE69822709T2 (de) 2005-03-10
EP0887655A2 (en) 1998-12-30
EP0887655B1 (en) 2004-03-31
US5935065A (en) 1999-08-10
AU7392498A (en) 1999-01-07
AR010921A1 (es) 2000-07-12
JPH1199139A (ja) 1999-04-13
BR9815758A (pt) 2000-11-28

Similar Documents

Publication Publication Date Title
JP4050828B2 (ja) 周辺アクセスおよび非均質磁場を有する磁気共鳴像映システム
US7372271B2 (en) Main magnet perforated eddy current shield for a magnetic resonance imaging device
US8704516B2 (en) Passive shims to increase the effective B0 and B1 uniformity in a body coil
CN102792189B (zh) 采用高介电常数材料降低mri射频单位吸收率及提高其信噪比的方法
US8598880B2 (en) Method and apparatus for imaging a subject using local surface coils
JP7289067B2 (ja) Ｍｒ誘導下超音波システムにおける改良された磁気共鳴（ｍｒ）性能
US6850065B1 (en) MRI coil system for breast imaging
CN102958432A (zh) 高频线圈及使用了该高频线圈的磁共振摄像装置
US20180275227A1 (en) Rf coil array and mri transmit array
US7466130B1 (en) Phased array shoulder coil
JPH09117436A (ja) 診断用の磁気共鳴装置のための磁石装置
JP2615195B2 (ja) 磁気共鳴映像システム用広幅ｍｒｉ表面コイル
CN101153897B (zh) 磁共振设备的高频发射装置
US6850206B2 (en) Local radio-frequency antenna for a magnetic resonance apparatus
US5130656A (en) Surface coil for a nuclear magnetic resonance apparatus
KR101771220B1 (ko) 자기공명영상 시스템
US10042018B2 (en) MRI scanner
EP0922965B1 (en) A magnetic resonance r.f. coil arrangement
JP2005506167A (ja) ２つの平行な端部導体を持つ無線周波数コイル
MXPA98005206A (es) Sistema de formacion de imagen por resonancia magnetica con acceso periferico y campo de homogeneo
JPH07163543A (ja) 磁気共鳴イメージング装置の高周波受信コイル
EP1733245B1 (en) System for magnetic resonance imaging
US5256970A (en) Magnetic resonance apparatus
JP2024065663A (ja) 高周波コイル装置及びそれを用いた磁気共鳴イメージング装置
Woo Optimized Human Head Array Design for 10.5 T MRI

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050617

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050617

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: 20071002

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20071130

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: 20101207

Year of fee payment: 3

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

Free format text: PAYMENT UNTIL: 20101207

Year of fee payment: 3

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

Free format text: PAYMENT UNTIL: 20111207

Year of fee payment: 4

LAPS Cancellation because of no payment of annual fees