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FI884996A0 - Maetningsprocedur foer att fraon nmr-signaler avlaegsna stoerningar genom jaemfoerelse av i olika riktningar roterande rf-faeltkomponenter. - Google Patents

Maetningsprocedur foer att fraon nmr-signaler avlaegsna stoerningar genom jaemfoerelse av i olika riktningar roterande rf-faeltkomponenter.

Info

Publication number
FI884996A0
FI884996A0 FI884996A FI884996A FI884996A0 FI 884996 A0 FI884996 A0 FI 884996A0 FI 884996 A FI884996 A FI 884996A FI 884996 A FI884996 A FI 884996A FI 884996 A0 FI884996 A0 FI 884996A0
Authority
FI
Finland
Prior art keywords
stoerningar
riktningar
maetningsprocedur
jaemfoerelse
faeltkomponenter
Prior art date
Application number
FI884996A
Other languages
English (en)
Other versions
FI80797B (fi
FI80797C (fi
Inventor
Ilm.
Original Assignee
Instrumentarium Oy
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 Instrumentarium Oy filed Critical Instrumentarium Oy
Priority to FI884996A priority Critical patent/FI80797C/fi
Publication of FI884996A0 publication Critical patent/FI884996A0/fi
Priority to US07/429,281 priority patent/US5068611A/en
Publication of FI80797B publication Critical patent/FI80797B/fi
Application granted granted Critical
Publication of FI80797C publication Critical patent/FI80797C/fi

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
    • G01R33/32—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
    • G01R33/3621—NMR receivers or demodulators, e.g. preamplifiers, means for frequency modulation of the MR signal using a digital down converter, means for analog to digital conversion [ADC] or for filtering or processing of the MR signal such as bandpass filtering, resampling, decimation or interpolation
    • 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
    • G01R33/32—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
    • G01R33/34069—Saddle 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
    • G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
    • G01R33/3678—Electrical details, e.g. matching or coupling of the coil to the receiver involving quadrature drive or detection, e.g. a circularly polarized RF magnetic field

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
FI884996A 1988-10-31 1988-10-31 Maetningsprocedur foer att fraon nmr-signaler avlaegsna stoerningar genom jaemfoerelse av i olika riktningar roterande rf-faeltkomponenter. FI80797C (fi)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI884996A FI80797C (fi) 1988-10-31 1988-10-31 Maetningsprocedur foer att fraon nmr-signaler avlaegsna stoerningar genom jaemfoerelse av i olika riktningar roterande rf-faeltkomponenter.
US07/429,281 US5068611A (en) 1988-10-31 1989-10-31 Measuring procedure for the elimination of faults from an NMR signal by comparing RF field components spinning in opposite directions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI884996A FI80797C (fi) 1988-10-31 1988-10-31 Maetningsprocedur foer att fraon nmr-signaler avlaegsna stoerningar genom jaemfoerelse av i olika riktningar roterande rf-faeltkomponenter.
FI884996 1988-10-31

Publications (3)

Publication Number Publication Date
FI884996A0 true FI884996A0 (fi) 1988-10-31
FI80797B FI80797B (fi) 1990-03-30
FI80797C FI80797C (fi) 1990-07-10

Family

ID=8527281

Family Applications (1)

Application Number Title Priority Date Filing Date
FI884996A FI80797C (fi) 1988-10-31 1988-10-31 Maetningsprocedur foer att fraon nmr-signaler avlaegsna stoerningar genom jaemfoerelse av i olika riktningar roterande rf-faeltkomponenter.

Country Status (2)

Country Link
US (1) US5068611A (fi)
FI (1) FI80797C (fi)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6150817A (en) * 1996-10-25 2000-11-21 Btg International Limited Magnetic resonance apparatus having reduced "dead time"
GB9622183D0 (en) * 1996-10-25 1996-12-18 British Tech Group Magnetic resonance apparatus having reduced dead time
EP1419398A1 (en) * 2001-07-20 2004-05-19 MRI Devices Corporation Coil configuration for magnetic resonance imaging
US8405393B2 (en) * 2010-03-01 2013-03-26 Colorado Seminary, Which Owns And Operates The University Of Denver EPR using Frank sequence
US10509091B2 (en) 2012-03-07 2019-12-17 Colorado Seminary, Which Owns And Operates The University Of Denver EPR methods and systems
WO2014015219A2 (en) 2012-07-19 2014-01-23 Colorado Seminary, Which Owns And Operates The University Of Denver Crossed-loop resonators
US12000920B2 (en) 2012-09-14 2024-06-04 University Of Denver Hall probe simulator circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521732A (en) * 1982-03-16 1985-06-04 Pegg David T Pulse sequence for use in performing nuclear magnetic resonance spectroscopy
FR2574551B1 (fr) * 1984-12-12 1986-12-26 Commissariat Energie Atomique Procede de generation et de traitement de signaux pour l'obtention par resonance magnetique nucleaire d'une image exempte de distorsions a partir d'un champ de polarisation inhomogene
DE3524682A1 (de) * 1985-07-11 1987-01-15 Philips Patentverwaltung Kernspinuntersuchungsverfahren

Also Published As

Publication number Publication date
FI80797B (fi) 1990-03-30
US5068611A (en) 1991-11-26
FI80797C (fi) 1990-07-10

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Legal Events

Date Code Title Description
PC Transfer of assignment of patent

Owner name: PICKER NORDSTAR OY

MM Patent lapsed

Owner name: PICKER NORDSTAR OY