EP1425597A1 - Magnet-resonanz-tomographiegerät mit lärmunterdrückung durch dämpfung von mechanischen schwingungen - Google Patents

Magnet-resonanz-tomographiegerät mit lärmunterdrückung durch dämpfung von mechanischen schwingungen

Info

Publication number
EP1425597A1
EP1425597A1 EP02760140A EP02760140A EP1425597A1 EP 1425597 A1 EP1425597 A1 EP 1425597A1 EP 02760140 A EP02760140 A EP 02760140A EP 02760140 A EP02760140 A EP 02760140A EP 1425597 A1 EP1425597 A1 EP 1425597A1
Authority
EP
European Patent Office
Prior art keywords
tomography device
gradient coil
spin tomography
damping elements
vibrations
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.)
Withdrawn
Application number
EP02760140A
Other languages
German (de)
English (en)
French (fr)
Inventor
Matthias Drobnitzky
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.)
Siemens AG
Original Assignee
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
Publication of EP1425597A1 publication Critical patent/EP1425597A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G01R33/38—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
    • G01R33/3854—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils means for active and/or passive vibration damping or acoustical noise suppression in gradient magnet coil systems

Definitions

  • FIG. It shows a superconducting basic field magnet 1 (e.g. an axial superconducting air coil magnet with active stray field shielding) which generates a homogeneous magnetic basic field in an interior.
  • the superconducting basic field magnet 1 consists of coils that are located in liquid helium.
  • the basic field magnet is surrounded by a double-shelled case 12, which is usually made of stainless steel.
  • the inner boiler which contains the liquid helium and partly also serves as a winding body for the magnetic coils, is suspended from the outer boiler, which has room temperature, via weakly heat-conducting GRP rods (rods). There is a vacuum between the inner and outer boiler.
  • the inner and outer boiler is called a magnetic vessel.
  • the path of noise generation via the inside of the MRI device i.e. Production of noise by vibration of the gradient coil and transmission of the noise to the support tube located in the gradient coil (8, 9, FIG. 2), which radiates it inwards to the patient and the interior, is, according to US Pat. No. 4,954,781, by a damping visco-elastic layer 10 (Figure 2) blocked in the double-layer interior of the support tube.
  • FIG. 3 shows a perspective illustration of the gradient coil with the three partial windings.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Radiology & Medical Imaging (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)
EP02760140A 2001-09-03 2002-08-30 Magnet-resonanz-tomographiegerät mit lärmunterdrückung durch dämpfung von mechanischen schwingungen Withdrawn EP1425597A1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10143048A DE10143048C1 (de) 2001-09-03 2001-09-03 Magnet-Resonanz-Tomographiegerät mit Lärmunterdrückung durch Dämpfung von mechanischen Schwingungen
DE10143048 2001-09-03
PCT/DE2002/003204 WO2003025609A1 (de) 2001-09-03 2002-08-30 Magnet-resonanz-tomographiegerät mit lärmunterdrückung durch dämpfung von mechanischen schwingungen

Publications (1)

Publication Number Publication Date
EP1425597A1 true EP1425597A1 (de) 2004-06-09

Family

ID=7697500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02760140A Withdrawn EP1425597A1 (de) 2001-09-03 2002-08-30 Magnet-resonanz-tomographiegerät mit lärmunterdrückung durch dämpfung von mechanischen schwingungen

Country Status (7)

Country Link
US (1) US6917200B2 (ko)
EP (1) EP1425597A1 (ko)
JP (1) JP4214056B2 (ko)
KR (1) KR20040029149A (ko)
CA (1) CA2459122A1 (ko)
DE (1) DE10143048C1 (ko)
WO (1) WO2003025609A1 (ko)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7345559B2 (en) * 2001-09-13 2008-03-18 General Electric Company High field open MRI magnet isolation system and method
EP1815263A1 (en) * 2004-11-17 2007-08-08 Koninklijke Philips Electronics N.V. Magnetic resonance system with reduced noise
JP4878174B2 (ja) * 2006-02-24 2012-02-15 株式会社日立製作所 磁気共鳴イメージング装置
US10220474B2 (en) 2016-12-02 2019-03-05 General Electricd Company Method and apparatus for gas turbine combustor inner cap and high frequency acoustic dampers
US10228138B2 (en) 2016-12-02 2019-03-12 General Electric Company System and apparatus for gas turbine combustor inner cap and resonating tubes
US10221769B2 (en) 2016-12-02 2019-03-05 General Electric Company System and apparatus for gas turbine combustor inner cap and extended resonating tubes
US11506382B2 (en) 2019-09-12 2022-11-22 General Electric Company System and method for acoustic dampers with multiple volumes in a combustion chamber front panel

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410473C2 (de) * 1983-04-11 1986-02-06 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5000 Köln Federungssystem für ein Kraftfahrzeug
JPH0284935A (ja) * 1988-06-14 1990-03-26 Toshiba Corp 磁気共鳴イメージング装置
US5178357A (en) * 1989-08-16 1993-01-12 Platus David L Vibration isolation system
US5793210A (en) * 1996-08-13 1998-08-11 General Electric Company Low noise MRI scanner
DE19722481C2 (de) * 1997-05-28 2000-02-10 Siemens Ag Kernspintomograph und Verwendung einer Geräuschminderungseinrichtung bei einem Kernspintomographen
DE19802359C2 (de) * 1998-01-22 2001-09-13 Oskar Bschorr Verfahren zur Schwingungsdämmung oder -aktivierung und Negativfeder hierfür
DE19838390A1 (de) * 1998-08-24 2000-03-02 Siemens Ag Lärmreduziertes diagnostisches Magnetresonanzgerät
DE19940551C1 (de) * 1999-08-26 2001-05-23 Siemens Ag Magnetresonanztomographiegerät mit schwingungsentkoppelter äußerer Hülle
EP1348136B1 (en) * 2000-12-05 2008-04-23 Koninklijke Philips Electronics N.V. Mri apparatus with a piezo actuator in a non-rigid suspension of the gradient coil carrier
US7345559B2 (en) * 2001-09-13 2008-03-18 General Electric Company High field open MRI magnet isolation system and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03025609A1 *

Also Published As

Publication number Publication date
JP2005521434A (ja) 2005-07-21
WO2003025609A1 (de) 2003-03-27
CA2459122A1 (en) 2003-03-27
US20040196041A1 (en) 2004-10-07
JP4214056B2 (ja) 2009-01-28
US6917200B2 (en) 2005-07-12
DE10143048C1 (de) 2003-04-17
KR20040029149A (ko) 2004-04-03

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