DE60225399D1 - Schaltkreis zur aktiven Entkoppelung von Sendespulen in Kernspinresonanztomographen, insbesondere vom Niedrigfeld-Typus - Google Patents

Schaltkreis zur aktiven Entkoppelung von Sendespulen in Kernspinresonanztomographen, insbesondere vom Niedrigfeld-Typus

Info

Publication number
DE60225399D1
DE60225399D1 DE60225399T DE60225399T DE60225399D1 DE 60225399 D1 DE60225399 D1 DE 60225399D1 DE 60225399 T DE60225399 T DE 60225399T DE 60225399 T DE60225399 T DE 60225399T DE 60225399 D1 DE60225399 D1 DE 60225399D1
Authority
DE
Germany
Prior art keywords
circuit
magnetic resonance
resonance imaging
field type
pin diode
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.)
Expired - Lifetime
Application number
DE60225399T
Other languages
English (en)
Other versions
DE60225399T2 (de
Inventor
Vittorio Viti
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.)
Esaote SpA
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
Publication of DE60225399D1 publication Critical patent/DE60225399D1/de
Application granted granted Critical
Publication of DE60225399T2 publication Critical patent/DE60225399T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G01R33/3642—Mutual coupling or decoupling of multiple coils, e.g. decoupling of a receive coil from a transmission coil, or intentional coupling of RF coils, e.g. for RF magnetic field amplification
    • G01R33/3657—Decoupling of multiple RF coils wherein the multiple RF coils do not have the same function in MR, e.g. decoupling of a transmission coil from a receive coil
    • 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
    • G01R33/3628—Tuning/matching of the transmit/receive coil

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
DE60225399T 2001-10-31 2002-10-28 Schaltkreis zur aktiven Entkoppelung von Sendespulen in Kernspinresonanztomographen, insbesondere vom Niedrigfeld-Typus Expired - Lifetime DE60225399T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001SV000039A ITSV20010039A1 (it) 2001-10-31 2001-10-31 Circuito didisaccoppiamento di bobine di trasmissione nelle macchine per il rilevamento d'immagini di risonanza
ITSV20010039 2001-10-31

Publications (2)

Publication Number Publication Date
DE60225399D1 true DE60225399D1 (de) 2008-04-17
DE60225399T2 DE60225399T2 (de) 2009-04-09

Family

ID=11457110

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60225399T Expired - Lifetime DE60225399T2 (de) 2001-10-31 2002-10-28 Schaltkreis zur aktiven Entkoppelung von Sendespulen in Kernspinresonanztomographen, insbesondere vom Niedrigfeld-Typus

Country Status (6)

Country Link
US (1) US6798207B2 (de)
EP (1) EP1308742B1 (de)
AT (1) ATE388411T1 (de)
DE (1) DE60225399T2 (de)
ES (1) ES2302777T3 (de)
IT (1) ITSV20010039A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100277175A1 (en) * 2006-08-15 2010-11-04 Koninklijke Philips Electronics N.V. Tunable and/or detunable mr receive coil arrangements
DE102008044962B3 (de) * 2008-08-29 2009-09-03 Siemens Aktiengesellschaft Vorrichtung und Verfahren zum Schalten einer PIN-Diode
DE102012204798B3 (de) * 2012-03-26 2013-04-11 Bruker Biospin Ag Elektronisches Interface für NMR-Empfangsresonatoren
AU2019272580A1 (en) 2018-05-21 2020-11-12 Hyperfine Operations, Inc. Radio-frequency coil signal chain for a low-field MRI system
JP7321487B2 (ja) 2018-09-13 2023-08-07 国立研究開発法人理化学研究所 磁気共鳴測定装置
US11171684B1 (en) * 2020-06-05 2021-11-09 Baker Hughes Oilfield Operations Llc Control of tranmsitting and receving antenna properties to reduce electromagnetic coupling

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0113413A3 (de) 1983-01-10 1985-05-08 Cameron Iron Works, Inc. Ringförmiges Ausblasventil
DE3427666A1 (de) * 1984-07-26 1986-02-06 Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen Schaltungsanordnung fuer einen messkopf eines kernspinresonanzgeraetes
NL8603250A (nl) * 1986-12-22 1988-07-18 Philips Nv Magnetisch resonantie-apparaat met pin-diode ontkoppelde detektiespoel.
US4763076A (en) 1987-09-01 1988-08-09 The Regents Of The University Of California MRI transmit coil disable switching via RF in/out cable
EP0306763B1 (de) * 1987-09-08 1995-05-31 The Regents Of The University Of California Ausschaltungssystem einer MRI-Transmissionsspule über ein RF Ein-/Aus-Kabel
US4881034A (en) * 1988-01-19 1989-11-14 The Regents Of The University Of California Switchable MRI RF coil array with individual coils having different and overlapping fields of view
DE9012639U1 (de) * 1989-09-18 1990-10-31 Siemens AG, 8000 München Fehlersichere Entkopplung von Sende- und Empfangsantennen bei Kernspinresonanzgeräten
US5621323A (en) * 1991-11-29 1997-04-15 Magnetic Research, Inc. Surface coil elements
JPH088604A (ja) * 1994-06-23 1996-01-12 New Japan Radio Co Ltd マイクロ波減衰装置
US6414488B1 (en) * 2000-03-01 2002-07-02 Koninklijke Philips Electronics N.V. Method and apparatus for decoupling magnetic resonance receive coils

Also Published As

Publication number Publication date
US6798207B2 (en) 2004-09-28
ES2302777T3 (es) 2008-08-01
US20030080801A1 (en) 2003-05-01
EP1308742A1 (de) 2003-05-07
DE60225399T2 (de) 2009-04-09
ATE388411T1 (de) 2008-03-15
EP1308742B1 (de) 2008-03-05
ITSV20010039A1 (it) 2003-05-01

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