CA2239803A1 - Mri system with peripheral access and inhomogeneous field - Google Patents

Mri system with peripheral access and inhomogeneous field Download PDF

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Publication number
CA2239803A1
CA2239803A1 CA002239803A CA2239803A CA2239803A1 CA 2239803 A1 CA2239803 A1 CA 2239803A1 CA 002239803 A CA002239803 A CA 002239803A CA 2239803 A CA2239803 A CA 2239803A CA 2239803 A1 CA2239803 A1 CA 2239803A1
Authority
CA
Canada
Prior art keywords
magnet
magnetic field
pole face
recited
base
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.)
Abandoned
Application number
CA002239803A
Other languages
English (en)
French (fr)
Inventor
Freeman H. Rose, Jr.
Wayne Cornelius
Christopher W. Crowley
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.)
MAGNEVU
Original Assignee
Panacea Medical Labs
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 Panacea Medical Labs filed Critical Panacea Medical Labs
Publication of CA2239803A1 publication Critical patent/CA2239803A1/en
Abandoned 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
    • G01R33/383—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)
CA002239803A 1997-06-27 1998-06-26 Mri system with peripheral access and inhomogeneous field Abandoned CA2239803A1 (en)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
CA2239803A1 true CA2239803A1 (en) 1998-12-27

Family

ID=25384580

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002239803A Abandoned CA2239803A1 (en) 1997-06-27 1998-06-26 Mri system with peripheral access and inhomogeneous field

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)

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GB2357149A (en) 1999-12-08 2001-06-13 Topspin Medical MRI using non-homogeneous static field
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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

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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
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JPH06121779A (ja) * 1992-10-12 1994-05-06 Toshiba Corp 磁気共鳴イメージング装置
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US5304930A (en) * 1993-02-01 1994-04-19 Panacea Medical Laboratories Remotely positioned MRI system
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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
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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
EP0887655A3 (en) 2000-03-15
JP4050828B2 (ja) 2008-02-20
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

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued