ATE450801T1 - Verfahren und gerät zur kompensierung von magnetischen rauschfeldern in räumlichen volumina und kernspintomograph - Google Patents

Verfahren und gerät zur kompensierung von magnetischen rauschfeldern in räumlichen volumina und kernspintomograph

Info

Publication number
ATE450801T1
ATE450801T1 AT03100618T AT03100618T ATE450801T1 AT E450801 T1 ATE450801 T1 AT E450801T1 AT 03100618 T AT03100618 T AT 03100618T AT 03100618 T AT03100618 T AT 03100618T AT E450801 T1 ATE450801 T1 AT E450801T1
Authority
AT
Austria
Prior art keywords
spatial volume
magnetic
nuclear spin
magnetic noise
noise
Prior art date
Application number
AT03100618T
Other languages
English (en)
Inventor
Davide Carlini
Alessandro Carrozzi
Aldo Ginanneschi
Paolo Iaia
Original Assignee
Esaote Spa
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 Esaote Spa filed Critical Esaote Spa
Application granted granted Critical
Publication of ATE450801T1 publication Critical patent/ATE450801T1/de

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
    • G01R33/389—Field stabilisation, e.g. by field measurements and control means or indirectly by current stabilisation
    • 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
    • G01R33/56563—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the main magnetic field B0, e.g. temporal variation of the magnitude or spatial inhomogeneity of B0
AT03100618T 2002-04-09 2003-03-11 Verfahren und gerät zur kompensierung von magnetischen rauschfeldern in räumlichen volumina und kernspintomograph ATE450801T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2002SV000014A ITSV20020014A1 (it) 2002-04-09 2002-04-09 Metodo e dispositivo per la compensazione di campi magnetici di disturbo in volumi di spazio e macchina per il rilevamento di immagini in ri

Publications (1)

Publication Number Publication Date
ATE450801T1 true ATE450801T1 (de) 2009-12-15

Family

ID=28053462

Family Applications (1)

Application Number Title Priority Date Filing Date
AT03100618T ATE450801T1 (de) 2002-04-09 2003-03-11 Verfahren und gerät zur kompensierung von magnetischen rauschfeldern in räumlichen volumina und kernspintomograph

Country Status (6)

Country Link
US (1) US6844732B2 (de)
EP (1) EP1353192B1 (de)
AT (1) ATE450801T1 (de)
DE (1) DE60330290D1 (de)
ES (1) ES2334021T3 (de)
IT (1) ITSV20020014A1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
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JP2002170764A (ja) * 2000-12-04 2002-06-14 Nikon Corp 荷電粒子線露光装置、荷電粒子線露光装置の調整方法及び半導体デバイスの製造方法
DE10337241B4 (de) * 2003-08-13 2008-05-29 Siemens Ag Verzeichnungskorrigierte Magnetresonanzmessung und Magnetresonanzgerät
ITSV20040032A1 (it) 2004-08-05 2004-11-05 Esaote Spa Metodo e sonda per la compensazione di campi magnetici di disturbo in volumi di spazio in particolare nelle macchine per il rilevamento di immagini in risonanza magnetica nucleare
DE102006035949B4 (de) * 2006-07-31 2009-11-26 Bruker Biospin Ag Vorrichtung und Verfahren zur Kompensation von Magnetfeldstörungen in Magnetfeldern mit hoher Feldhomogenität
US20080048658A1 (en) * 2006-08-24 2008-02-28 Stephen Gerard Hushek Automatic noise cancellation for unshielded mr systems
US20080118128A1 (en) * 2006-11-21 2008-05-22 Thomas Louis Toth Methods and systems for enhanced accuracy image noise addition
US7508214B2 (en) * 2007-05-21 2009-03-24 Medrad, Inc. Transmit-mode phased array coils for reduced SAR and artifact issues
US8392142B1 (en) 2009-04-01 2013-03-05 The United States Of America As Represented By The Secretary Of The Navy Algorithmic reduction of vehicular magnetic self-noise
US8532437B2 (en) 2009-05-18 2013-09-10 Citrix Systems, Inc. Systems and methods for block recomposition for compound image compression
US8970217B1 (en) * 2010-04-14 2015-03-03 Hypres, Inc. System and method for noise reduction in magnetic resonance imaging
CN105849576B (zh) * 2013-07-19 2019-12-10 皇家飞利浦有限公司 降低用于mri成像和核成像的组合式组件中的干扰
MX2017002939A (es) 2014-09-05 2017-12-07 Hyperfine Res Inc Configuracion automatica de un sistema de formacion de imagenes por resonancia magnetica de campo bajo.
EP3276366A1 (de) 2016-07-26 2018-01-31 Esaote S.p.A. Verfahren und system zur kompensierung von magnetischem rauschen verursacht durch umgebungsrauschen in einem raumvolumen
TWI685668B (zh) * 2016-09-29 2020-02-21 美商超精細研究股份有限公司 磁共振成像系統，以及搭配該磁共振成像系統使用之調諧系統
US10627464B2 (en) 2016-11-22 2020-04-21 Hyperfine Research, Inc. Low-field magnetic resonance imaging methods and apparatus
US10539637B2 (en) 2016-11-22 2020-01-21 Hyperfine Research, Inc. Portable magnetic resonance imaging methods and apparatus
EP3690469A1 (de) 2019-02-04 2020-08-05 Esaote S.p.A. Magnetfeldsensor mit kompensation eines statischen magnetfelds um die sättigung des sensors zu vermeiden, und verfahren zur kompensation von magnetischem umgebungsrauschen mittels eines solchen sensors
US11510588B2 (en) 2019-11-27 2022-11-29 Hyperfine Operations, Inc. Techniques for noise suppression in an environment of a magnetic resonance imaging system

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665368A (en) * 1985-04-16 1987-05-12 Yokogawa Hokushin Electric Corporation NMR imaging apparatus
US5027071A (en) 1990-03-05 1991-06-25 General Electric Company Method of, and apparatus for, NMR slice selection
US5214383A (en) * 1990-10-29 1993-05-25 Resonex, Inc. MRI apparatus with external magnetic field compensation
DE4101481C2 (de) * 1991-01-19 1994-01-13 Bruker Analytische Messtechnik Anordnung zum Kompensieren externer Magnetfeldstörungen bei einem Kernresonanzspektrometer mit supraleitender Magnetspule
US5245286A (en) * 1991-04-18 1993-09-14 The Regents Of The University Of California Apparatus and method for stabilizing the background magnetic field during mri
FR2702279B1 (fr) * 1993-03-05 1995-04-07 Commissariat Energie Atomique Magnétomètre différentiel à résonance.
DE4424842C1 (de) * 1994-07-14 1996-02-01 Spectrospin Ag Kompensation von Störfeldern bei NMR-Messungen im Erdmagnetfeld
DE19702831A1 (de) * 1997-01-27 1998-03-12 Siemens Ag Vorrichtung zur Kompensation von externen Feldstörungen des Grundmagnetfeldes bei Kernspintomographen
IT1294226B1 (it) * 1997-08-01 1999-03-24 Itel Telecomunicazioni S R L Sistema attivo per la compensazione di campi magnetici di disturbo particolarmente adatti per l'uso su tomografi per risonanza magnetica

Also Published As

Publication number Publication date
US6844732B2 (en) 2005-01-18
DE60330290D1 (de) 2010-01-14
ITSV20020014A1 (it) 2003-10-09
ES2334021T3 (es) 2010-03-04
EP1353192A2 (de) 2003-10-15
US20030214296A1 (en) 2003-11-20
EP1353192A3 (de) 2004-07-14
EP1353192B1 (de) 2009-12-02

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