FI881301A0 - Automatisk hf-justering foer magnetresonanssoekare. - Google Patents

Automatisk hf-justering foer magnetresonanssoekare.

Info

Publication number
FI881301A0
FI881301A0 FI881301A FI881301A FI881301A0 FI 881301 A0 FI881301 A0 FI 881301A0 FI 881301 A FI881301 A FI 881301A FI 881301 A FI881301 A FI 881301A FI 881301 A0 FI881301 A0 FI 881301A0
Authority
FI
Finland
Prior art keywords
magnetresonanssoekare
justering
automatisk
foer
justering foer
Prior art date
Application number
FI881301A
Other languages
English (en)
Other versions
FI881301A (fi
Inventor
Joseph Kenneth Maier
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of FI881301A0 publication Critical patent/FI881301A0/fi
Publication of FI881301A publication Critical patent/FI881301A/fi

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • 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
    • G01R33/483—NMR imaging systems with selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy
    • G01R33/4833—NMR imaging systems with selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy using spatially selective excitation of the volume of interest, e.g. selecting non-orthogonal or inclined slices
    • 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
    • G01R33/58—Calibration of imaging systems, e.g. using test probes, Phantoms; Calibration objects or fiducial markers such as active or passive RF coils surrounding an MR active material
    • G01R33/583—Calibration of signal excitation or detection systems, e.g. for optimal RF excitation power or frequency
FI881301A 1987-04-29 1988-03-18 Automatisk hf-justering foer magnetresonanssoekare. FI881301A (fi)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/043,862 US4806866A (en) 1987-04-29 1987-04-29 Automatic RF frequency adjustment for magnetic resonance scanner

Publications (2)

Publication Number Publication Date
FI881301A0 true FI881301A0 (fi) 1988-03-18
FI881301A FI881301A (fi) 1988-10-30

Family

ID=21929258

Family Applications (1)

Application Number Title Priority Date Filing Date
FI881301A FI881301A (fi) 1987-04-29 1988-03-18 Automatisk hf-justering foer magnetresonanssoekare.

Country Status (6)

Country Link
US (1) US4806866A (fi)
EP (1) EP0289360A3 (fi)
JP (1) JPH0664131B2 (fi)
KR (1) KR910004654B1 (fi)
FI (1) FI881301A (fi)
IL (1) IL85683A (fi)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL82030A (en) * 1987-03-27 1990-11-05 Elscint Ltd Separation of spectral components
US4885538A (en) * 1988-08-19 1989-12-05 The Regents Of The University Of California Low data rate low noise serial digital communication link for magnetic resonance imaging systems
JPH0412734A (ja) * 1990-05-07 1992-01-17 Hitachi Ltd 磁気共鳴イメージングの方法および装置
US5107215A (en) * 1990-06-25 1992-04-21 General Electric Rf power calibration for an nmr scanner
US5309102A (en) * 1993-05-07 1994-05-03 General Electric Company Frequency calibration for MRI scanner
US5451876A (en) * 1993-10-18 1995-09-19 General Electric Company MRI system with dynamic receiver gain
US5912558A (en) * 1997-11-14 1999-06-15 Picker International, Inc. Automatic frequency tuning for MR scanners
US6025718A (en) * 1998-04-07 2000-02-15 Hushek; Stephen G. RF power calibration for an MRI system using local coils
US6111411A (en) * 1998-04-07 2000-08-29 Generalelectric Company RF power calibration for an MRI system using multiple axis projections
DE10055417C2 (de) * 2000-11-09 2002-10-24 Siemens Ag Verfahren zum Erzeugen von Magnetresonanzbildern mit optimaler Einstellung von Sequenzparametern
US6621433B1 (en) 2001-06-22 2003-09-16 Fonar Corporation Adaptive dynamic range receiver for MRI
US6943548B1 (en) 2001-06-22 2005-09-13 Fonar Corporation Adaptive dynamic range receiver for MRI
JP3753668B2 (ja) * 2002-03-12 2006-03-08 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー Ｒｆパルスチューニング装置
US6977502B1 (en) 2002-11-04 2005-12-20 Fonar Corporation Configurable matrix receiver for MRI
JP3802891B2 (ja) * 2003-07-02 2006-07-26 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー ゲイン調節方法および磁気共鳴撮影装置
CN101322647B (zh) * 2007-06-15 2010-09-29 Ge医疗系统环球技术有限公司 磁共振成像设备和射频发射增益设置方法
US9097769B2 (en) * 2011-02-28 2015-08-04 Life Services, LLC Simultaneous TX-RX for MRI systems and other antenna devices
AU2012391497B2 (en) 2012-10-04 2015-09-10 Halliburton Energy Services, Inc. Frequency location apparatus, methods, and systems
US9261470B2 (en) * 2014-03-07 2016-02-16 One Resonance Sensors, Llc High precision elemental composition determination
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
DE102017201074A1 (de) * 2017-01-24 2018-07-26 Siemens Healthcare Gmbh Verfahren zur Aufnahme von Magnetresonanzdaten, Magnetresonanzeinrichtung, Computerprogramm und Datenträger
US20210011103A1 (en) * 2019-07-08 2021-01-14 Canon Medical Systems Corporation Magnetic resonance imaging apparatus and magnetic resonance imaging method
US10969451B1 (en) 2019-09-23 2021-04-06 GE Precision Healthcare LLC Systems and methods for in-phase zero echo time magnetic resonance imaging

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873909A (en) * 1967-08-21 1975-03-25 Varian Associates Gyromagnetic apparatus employing computer means for correcting its operating parameters
US3609519A (en) * 1967-11-22 1971-09-28 Jeol Ltd Apparatus for maintaining field frequency control in a gyromagnetic instrument
FR2205199A5 (fi) * 1972-10-02 1974-05-24 Sp Konstruktors
US4171511A (en) * 1978-04-14 1979-10-16 Varian Associates, Inc. Automatic field-frequency lock in an NMR spectrometer
US4411270A (en) * 1978-11-20 1983-10-25 Damadian Raymond V Apparatus and method for nuclear magnetic resonance scanning and mapping
US4543529A (en) * 1983-01-04 1985-09-24 Nmr Imaging, Inc. Method of tuning an NMR apparatus
US4585993A (en) * 1983-12-14 1986-04-29 General Electric Company Method for selective NMR imaging of chemically-shifted nuclei
JPS6123953A (ja) * 1984-07-11 1986-02-01 Jeol Ltd 核磁気共鳴装置

Also Published As

Publication number Publication date
EP0289360A2 (en) 1988-11-02
FI881301A (fi) 1988-10-30
EP0289360A3 (en) 1990-04-25
IL85683A (en) 1991-06-10
JPS63286141A (ja) 1988-11-22
US4806866A (en) 1989-02-21
IL85683A0 (en) 1988-08-31
KR910004654B1 (ko) 1991-07-09
KR880013325A (ko) 1988-11-30
JPH0664131B2 (ja) 1994-08-22

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Legal Events

Date Code Title Description
FD Application lapsed
FD Application lapsed

Owner name: GENERAL ELECTRIC COMPANY