DE10345767A1 - Magnetresonanzgerät mit einer Höhlung und mit einem in der Höhlung angeordneten Gradientenspulensystem - Google Patents

Magnetresonanzgerät mit einer Höhlung und mit einem in der Höhlung angeordneten Gradientenspulensystem Download PDF

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Publication number
DE10345767A1
DE10345767A1 DE10345767A DE10345767A DE10345767A1 DE 10345767 A1 DE10345767 A1 DE 10345767A1 DE 10345767 A DE10345767 A DE 10345767A DE 10345767 A DE10345767 A DE 10345767A DE 10345767 A1 DE10345767 A1 DE 10345767A1
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DE
Germany
Prior art keywords
cavity
gradient coil
coil system
magnetic resonance
resonance apparatus
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
DE10345767A
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English (en)
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DE10345767B4 (de
Inventor
Juergen Nistler
Stefan Stocker
Markus Vester
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Siemens AG
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Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE10345767A priority Critical patent/DE10345767B4/de
Priority to CN2004100942076A priority patent/CN1657969A/zh
Priority to US10/957,435 priority patent/US7098661B2/en
Publication of DE10345767A1 publication Critical patent/DE10345767A1/de
Application granted granted Critical
Publication of DE10345767B4 publication Critical patent/DE10345767B4/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
    • 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
    • G01R33/34076—Birdcage coils
    • 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
    • G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
    • G01R33/48—NMR imaging systems
    • G01R33/54—Signal processing systems, e.g. using pulse sequences ; Generation or control of pulse sequences; Operator console
    • G01R33/56—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution
    • G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
    • G01R33/56518—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to eddy currents, e.g. caused by switching of the gradient magnetic field

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

Abstract

Ein Magnetresonanzgerät mit einer Höhlung und mit einem in der Höhlung angeordneten Gradientenspulensystem beinhaltet folgende Merkmale: DOLLAR A - Das Gradientenspulensystem ist von einem Hochfrequenzschirm im Wesentlichen umschlossen, DOLLAR A - die Höhlung weist eine elektrisch leitfähige Begrenzungsfläche auf und DOLLAR A - der Hochfrequenzschirm ist bezüglich der Begrenzungsfläche derart kurz beabstandet, dass aufgrund der kapazitiven Kopplung zwischen dem Hochfrequenzschirm und der Begrenzungsfläche der Hochfrequenzschirm hochfrequenztechnisch mit der Begrenzungsfläche kurzgeschlossen ist.
DE10345767A 2003-10-01 2003-10-01 Magnetresonanzgerät mit einer Höhlung und mit einem in der Höhlung angeordneten Gradientenspulensystem Expired - Fee Related DE10345767B4 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE10345767A DE10345767B4 (de) 2003-10-01 2003-10-01 Magnetresonanzgerät mit einer Höhlung und mit einem in der Höhlung angeordneten Gradientenspulensystem
CN2004100942076A CN1657969A (zh) 2003-10-01 2004-09-30 具有空腔和设置在该空腔内的梯度线圈***的磁共振设备
US10/957,435 US7098661B2 (en) 2003-10-01 2004-10-01 Magnetic resonance device with a high frequency shield having a high frequency short circuit to the circuits boundary surface of the basic field magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10345767A DE10345767B4 (de) 2003-10-01 2003-10-01 Magnetresonanzgerät mit einer Höhlung und mit einem in der Höhlung angeordneten Gradientenspulensystem

Publications (2)

Publication Number Publication Date
DE10345767A1 true DE10345767A1 (de) 2005-05-04
DE10345767B4 DE10345767B4 (de) 2006-05-18

Family

ID=34384343

Family Applications (1)

Application Number Title Priority Date Filing Date
DE10345767A Expired - Fee Related DE10345767B4 (de) 2003-10-01 2003-10-01 Magnetresonanzgerät mit einer Höhlung und mit einem in der Höhlung angeordneten Gradientenspulensystem

Country Status (3)

Country Link
US (1) US7098661B2 (de)
CN (1) CN1657969A (de)
DE (1) DE10345767B4 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10331809B3 (de) * 2003-07-14 2005-04-21 Siemens Ag Magnetresonanzgerät mit einem Grundfeldmagneten mit einer ausgebauchten Höhlung
DE10345767B4 (de) * 2003-10-01 2006-05-18 Siemens Ag Magnetresonanzgerät mit einer Höhlung und mit einem in der Höhlung angeordneten Gradientenspulensystem
DE10345766B3 (de) * 2003-10-01 2005-08-11 Siemens Ag Erzeuger zeitvariabler Magnetfelder eines Magnetresonanzgeräts und Magnetresonanzgerät mit dem Erzeuger
WO2005088331A1 (en) * 2004-03-03 2005-09-22 Koninklijke Philips Electronics, N.V. Magnetic resonance imaging scanner with booster iron
JP5427604B2 (ja) * 2007-06-14 2014-02-26 株式会社日立メディコ オープン型磁気共鳴イメージング装置
DE102007054592B4 (de) * 2007-11-15 2014-04-30 Siemens Aktiengesellschaft Steckverbindungsvorrichtung, ausgebildet zur Verbindung zweier Funktionselemente zur Signal- und Leistungsübertragung
US7622927B2 (en) * 2008-04-11 2009-11-24 Siemens Aktiengesellschaft Magnetic resonance apparatus with RF amplifier(s) disposed within the spaced distance between the primary and secondary gradient coil windings
US7576542B1 (en) 2008-06-26 2009-08-18 General Electric Co. System and apparatus for providing electrical and cooling interconnections in a magnetic resonance imaging (MRI) system
DE102013204952B3 (de) 2013-03-20 2014-05-15 Bruker Biospin Ag Aktiv abgeschirmtes zylinderförmiges Gradientenspulensystem mit passiver HF-Abschirmung für NMR-Apparate

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3445724A1 (de) * 1983-12-15 1985-06-27 Mitsubishi Denki K.K., Tokio/Tokyo Magnetische feldspule fuer einen nmr-computertomographen
US4864241A (en) * 1987-08-17 1989-09-05 Picker, Limited Long time constant eddy current compensation
DE4344287C1 (de) * 1993-12-23 1995-06-14 Siemens Ag Supraleitender Magnet mit aktiver Schirmung für Kernspintomographieanlagen
DE4414371A1 (de) * 1994-01-19 1995-07-20 Siemens Ag Diagnostisches Magnetresonanzgerät
DE10156770A1 (de) * 2000-12-21 2002-07-04 Siemens Ag Magnetresonanzgerät mit einem Gradientenspulensystem und einer elektrisch leitfähigen Struktur

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4642569A (en) * 1983-12-16 1987-02-10 General Electric Company Shield for decoupling RF and gradient coils in an NMR apparatus
JP3179805B2 (ja) * 1991-09-04 2001-06-25 株式会社日立メディコ Ｍｒイメージング装置の傾斜磁界発生コイル
US5574372A (en) * 1994-01-19 1996-11-12 Siemens Aktiengesellschaft Diagnostic magnetic resonance apparatus having a radio frequency shield between the radio frequency antenna and the gradient coil system
JP2002253532A (ja) * 2000-12-21 2002-09-10 Siemens Ag 磁気共鳴装置
DE10116802C1 (de) * 2001-04-04 2002-10-02 Siemens Ag RF-Antenne für ein offenes MR-System
DE10160073A1 (de) * 2001-12-07 2003-06-26 Siemens Ag Lokale Hochfrequenzantenne für ein Magnetresonanzgerät
DE10213565B3 (de) * 2002-03-26 2004-01-08 Siemens Ag Hochfrequenzantenne für eine Magnetresonanzanlage
DE10219749A1 (de) * 2002-05-02 2003-11-13 Siemens Ag Übermittlungsverfahren für ein Magnetresonanzsignal und hiermit korrespondierende Empfangsanordnung und Magnetresonanzanlage
GB2401946B (en) * 2003-03-25 2006-10-04 Siemens Ag Generator for time-variable magnetic fields of a magnetic resonance instrument and magnetic resonance instrument with the generator
DE10335789B4 (de) * 2003-08-05 2007-01-04 Siemens Ag Magnetresonanzgerät mit einer Höhlung und mit einem in der Höhlung angeordneten Gradientenspulensystem
DE10345767B4 (de) * 2003-10-01 2006-05-18 Siemens Ag Magnetresonanzgerät mit einer Höhlung und mit einem in der Höhlung angeordneten Gradientenspulensystem
DE10346275B4 (de) * 2003-10-06 2005-08-18 Siemens Ag Erzeuger zeitvariabler Magnetfelder eines Magnetresonanzgeräts und Magnetresonanzgerät mit dem Erzeuger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3445724A1 (de) * 1983-12-15 1985-06-27 Mitsubishi Denki K.K., Tokio/Tokyo Magnetische feldspule fuer einen nmr-computertomographen
US4864241A (en) * 1987-08-17 1989-09-05 Picker, Limited Long time constant eddy current compensation
DE4344287C1 (de) * 1993-12-23 1995-06-14 Siemens Ag Supraleitender Magnet mit aktiver Schirmung für Kernspintomographieanlagen
DE4414371A1 (de) * 1994-01-19 1995-07-20 Siemens Ag Diagnostisches Magnetresonanzgerät
DE10156770A1 (de) * 2000-12-21 2002-07-04 Siemens Ag Magnetresonanzgerät mit einem Gradientenspulensystem und einer elektrisch leitfähigen Struktur

Also Published As

Publication number Publication date
DE10345767B4 (de) 2006-05-18
US7098661B2 (en) 2006-08-29
US20050073311A1 (en) 2005-04-07
CN1657969A (zh) 2005-08-24

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