[go: up one dir, main page]

FR2667948B1 - Systeme magnetique a champ homogene de grande accessibilite. - Google Patents

Systeme magnetique a champ homogene de grande accessibilite.

Info

Publication number
FR2667948B1
FR2667948B1 FR9012629A FR9012629A FR2667948B1 FR 2667948 B1 FR2667948 B1 FR 2667948B1 FR 9012629 A FR9012629 A FR 9012629A FR 9012629 A FR9012629 A FR 9012629A FR 2667948 B1 FR2667948 B1 FR 2667948B1
Authority
FR
France
Prior art keywords
magnetic system
homogeneous field
high accessibility
accessibility
homogeneous
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
FR9012629A
Other languages
English (en)
Other versions
FR2667948A1 (fr
Inventor
Taquin Jacques
Sauzade Michel
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.)
Magnetech SA
Original Assignee
Magnetech SA
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 Magnetech SA filed Critical Magnetech SA
Priority to FR9012629A priority Critical patent/FR2667948B1/fr
Priority to PCT/FR1991/000796 priority patent/WO1992007278A1/fr
Publication of FR2667948A1 publication Critical patent/FR2667948A1/fr
Application granted granted Critical
Publication of FR2667948B1 publication Critical patent/FR2667948B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01R33/3873—Compensation of inhomogeneities using ferromagnetic bodies ; Passive shimming
    • 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
    • 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
    • G01R33/42—Screening
    • G01R33/421—Screening of main or gradient magnetic field

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
FR9012629A 1990-10-12 1990-10-12 Systeme magnetique a champ homogene de grande accessibilite. Expired - Fee Related FR2667948B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9012629A FR2667948B1 (fr) 1990-10-12 1990-10-12 Systeme magnetique a champ homogene de grande accessibilite.
PCT/FR1991/000796 WO1992007278A1 (fr) 1990-10-12 1991-10-14 Systeme magnetique a champ homogene de grande accessibilite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9012629A FR2667948B1 (fr) 1990-10-12 1990-10-12 Systeme magnetique a champ homogene de grande accessibilite.

Publications (2)

Publication Number Publication Date
FR2667948A1 FR2667948A1 (fr) 1992-04-17
FR2667948B1 true FR2667948B1 (fr) 1993-04-16

Family

ID=9401180

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9012629A Expired - Fee Related FR2667948B1 (fr) 1990-10-12 1990-10-12 Systeme magnetique a champ homogene de grande accessibilite.

Country Status (2)

Country Link
FR (1) FR2667948B1 (fr)
WO (1) WO1992007278A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276945B (en) * 1993-04-08 1997-02-26 Oxford Magnet Tech Improvements in or relating to MRI magnets
GB2295672B (en) * 1994-11-29 1999-05-12 Oxford Magnet Tech Improvements in or relating to cryogenic MRI magnets
US6305804B1 (en) 1999-03-25 2001-10-23 Fovioptics, Inc. Non-invasive measurement of blood component using retinal imaging
US6650915B2 (en) 2001-09-13 2003-11-18 Fovioptics, Inc. Non-invasive measurement of blood analytes using photodynamics
US6895264B2 (en) 2002-08-26 2005-05-17 Fovioptics Inc. Non-invasive psychophysical measurement of glucose using photodynamics
CN116052978B (zh) * 2022-12-15 2025-09-26 深圳航天科技创新研究院 一种用于头部磁共振成像的Halbach磁体及优化方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3245944A1 (de) * 1982-12-11 1984-06-14 Bruker Analytische Meßtechnik GmbH, 7512 Rheinstetten Elektromagnet fuer die nmr-tomographie
DE3245945A1 (de) * 1982-12-11 1984-06-14 Bruker Analytische Meßtechnik GmbH, 7512 Rheinstetten Elektromagnet fuer die nmr-tomographie
JPH0640869B2 (ja) * 1984-01-18 1994-06-01 株式会社日立メディコ Νｍｒイメ−ジング装置
GB2184243B (en) * 1985-12-09 1989-12-20 Picker Int Ltd Electromagnet arrangements
JPH02502967A (ja) * 1987-04-15 1990-09-20 オックスフォード　マグネット　テクノロジィ　リミテッド 磁界発生装置
JPH01227407A (ja) * 1988-03-08 1989-09-11 Toshiba Corp 磁気共鳴イメージング装置用磁石
GB8808334D0 (en) * 1988-04-08 1988-05-11 Magnex Scient Ltd Electromagnets
JPH0690975B2 (ja) * 1988-06-03 1994-11-14 三菱電機株式会社 磁場補正用磁性体シム

Also Published As

Publication number Publication date
FR2667948A1 (fr) 1992-04-17
WO1992007278A1 (fr) 1992-04-30

Similar Documents

Publication Publication Date Title
FR2671226B1 (fr) Assemblage de champ pour un electro-aimant.
DE69101539D1 (de) Magnetische Kühlvorrichtung.
DE59003260D1 (de) Magnetsystem.
DE69222313D1 (de) Blickverfolgung für gesichtsfelduntersucher
DE59103162D1 (de) Magnetsystem.
DE69600647D1 (de) Abgeschirmter Steckverbinder mit hoher Leistung
DE69508911D1 (de) Gehäuse mit elektromagnetischer Abschirmung
FR2672734B1 (fr) Element d'emission de champ.
DE59106870D1 (de) Magnetfelddetektor.
DE69112658D1 (de) Abgeschirmter Verbinder.
FI921953A0 (fi) Magnetisk taetning.
DE69028962D1 (de) Magnetresonanzsysteme
FI915242A7 (fi) Piirilevyn rf-suojaus
DE68919036D1 (de) Magnetfeldsensoren.
DE69017856D1 (de) Abgeschirmter Mehrkabelverbinder.
FI913193A0 (fi) Magnetisk inspelnings- och aotergivningsanordning.
NO900183D0 (no) Magnetkrets.
FR2685144B1 (fr) Transducteur electromagnetique a aimant permanent multipolaire.
FR2667948B1 (fr) Systeme magnetique a champ homogene de grande accessibilite.
FR2574980B1 (fr) Aimant solenoidal a champ magnetique homogene
DE69102438D1 (de) Magnetische Abschirmung.
DE69205487D1 (de) Supraleitende magnetische Abschirmung.
FR2666559B1 (fr) Systeme de dragage magnetique.
DE68911992D1 (de) Magnetfeldmessgerät.
DE69200536D1 (de) Gehäuse mit Widerstandsbeschichtung für hochfrequente elektromagnetische Abschirmung.

Legal Events

Date Code Title Description
ST Notification of lapse