CA2482801A1 - Gradient radiofrequence et bobine de compensation - Google Patents

Gradient radiofrequence et bobine de compensation Download PDF

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Publication number
CA2482801A1
CA2482801A1 CA002482801A CA2482801A CA2482801A1 CA 2482801 A1 CA2482801 A1 CA 2482801A1 CA 002482801 A CA002482801 A CA 002482801A CA 2482801 A CA2482801 A CA 2482801A CA 2482801 A1 CA2482801 A1 CA 2482801A1
Authority
CA
Canada
Prior art keywords
adjusting
current element
adjustable component
radio frequency
component includes
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
CA002482801A
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English (en)
Other versions
CA2482801C (fr
Inventor
J. Thomas Vaughan, Jr.
Gregor Adriany
Kamil Ugurbil
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.)
University of Minnesota
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Individual
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 Individual filed Critical Individual
Publication of CA2482801A1 publication Critical patent/CA2482801A1/fr
Application granted granted Critical
Publication of CA2482801C publication Critical patent/CA2482801C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves  involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
    • 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
    • G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
    • G01R33/3628—Tuning/matching of the transmit/receive coil

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Radiology & Medical Imaging (AREA)
  • General Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

Plusieurs éléments de courant linéaire (130B) sont configurés autour d'un spécimen à imager. Dans chaque élément de courant, on régule un courant indépendamment d'un courant dans les autres éléments de courant de façon à choisir un gradient et réaliser une compensation de radiofréquence. Chaque élément de courant, attaqué par un canal séparé d'un émetteur, est connecté à un canal séparé d'un récepteur multicanal. La régulation de l'impédance, et donc du courant, de chaque élément de courant se fait mécaniquement ou électriquement.
CA2482801A 2002-04-19 2003-04-21 Gradient radiofrequence et bobine de compensation Expired - Lifetime CA2482801C (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US37380802P 2002-04-19 2002-04-19
US60/373,808 2002-04-19
US37811102P 2002-05-14 2002-05-14
US60/378,111 2002-05-14
PCT/US2003/012393 WO2003089947A1 (fr) 2002-04-19 2003-04-21 Gradient radiofrequence et bobine de compensation

Publications (2)

Publication Number Publication Date
CA2482801A1 true CA2482801A1 (fr) 2003-10-30
CA2482801C CA2482801C (fr) 2011-09-06

Family

ID=29254535

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2482801A Expired - Lifetime CA2482801C (fr) 2002-04-19 2003-04-21 Gradient radiofrequence et bobine de compensation

Country Status (7)

Country Link
EP (1) EP1497668A1 (fr)
JP (1) JP2005523094A (fr)
KR (1) KR20040103981A (fr)
CN (1) CN1646933A (fr)
AU (1) AU2003262371A1 (fr)
CA (1) CA2482801C (fr)
WO (1) WO2003089947A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1864080A (zh) * 2003-10-03 2006-11-15 明尼苏达大学董事会 用于核磁共振系统的并行收发器
US20050264291A1 (en) * 2004-05-07 2005-12-01 Vaughan J T Multi-current elements for magnetic resonance radio frequency coils
WO2006042267A1 (fr) 2004-10-07 2006-04-20 Invivo Corporation Procede et appareil pour blindage discret de reseaux de bobines volumiques rf
CN101283286A (zh) * 2005-10-07 2008-10-08 皇家飞利浦电子股份有限公司 多信道发射磁共振
JP5179019B2 (ja) * 2006-04-04 2013-04-10 株式会社日立製作所 コイル装置およびそれを用いた核磁気共鳴撮像装置
US7525313B2 (en) * 2007-05-04 2009-04-28 General Electric Company System and method for multi-channel MR transmission
JP5549977B2 (ja) * 2010-04-26 2014-07-16 株式会社 Ｊｅｏｌ Ｒｅｓｏｎａｎｃｅ Ｎｍｒプローブおよびｎｍｒ装置
KR101454663B1 (ko) 2013-03-26 2014-10-27 삼성전자주식회사 무선 주파수 공진기, 무선 주파수 코일 및 자기 공명 영상 장치
DE102013213400A1 (de) * 2013-06-21 2014-12-24 Siemens Aktiengesellschaft Sendeeinheit für ein Magnetresonanztomographiesystem
KR101890261B1 (ko) * 2016-12-01 2018-08-22 가천대학교 산학협력단 Z-축 방향 어레이 구조의 자기공명 영상용 새장형 코일 조립체
US11333731B2 (en) 2018-04-13 2022-05-17 Canon Medical Systems Corporation Magnetic resonance imaging apparatus, RF coil, and magnetic resonance imaging method
KR101995904B1 (ko) * 2018-11-09 2019-07-04 한국기초과학지원연구원 자석의 공간 자기장 분포 측정방법 및 이를 이용한 자석의 공간 자기장 분포 측정장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5001428A (en) * 1989-08-21 1991-03-19 General Electric Company Method for mapping the RF transmit and receive field in an NMR system
JP3171881B2 (ja) * 1991-07-31 2001-06-04 株式会社東芝 磁気共鳴映像装置用高周波プローブおよび磁気共鳴映像装置
US5594338A (en) * 1995-03-08 1997-01-14 Quantum Magnetics, Inc. Automatic tuning apparatus and method for substance detection using nuclear quadrupole resonance and nuclear magnetic resonance
WO2000072033A2 (fr) * 1999-05-21 2000-11-30 The General Hospital Corporation Bobinage hf pour systeme d'imagerie

Also Published As

Publication number Publication date
WO2003089947A8 (fr) 2004-05-06
CA2482801C (fr) 2011-09-06
EP1497668A1 (fr) 2005-01-19
CN1646933A (zh) 2005-07-27
WO2003089947A1 (fr) 2003-10-30
KR20040103981A (ko) 2004-12-09
AU2003262371A1 (en) 2003-11-03
JP2005523094A (ja) 2005-08-04

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Effective date: 20230421