EP1207784A1 - Procede d'imagerie par resonance magnetique et d'analyse spectroscopique, et appareil associe - Google Patents

Procede d'imagerie par resonance magnetique et d'analyse spectroscopique, et appareil associe

Info

Publication number
EP1207784A1
EP1207784A1 EP00950723A EP00950723A EP1207784A1 EP 1207784 A1 EP1207784 A1 EP 1207784A1 EP 00950723 A EP00950723 A EP 00950723A EP 00950723 A EP00950723 A EP 00950723A EP 1207784 A1 EP1207784 A1 EP 1207784A1
Authority
EP
European Patent Office
Prior art keywords
antenna
magnetic resonance
inner conductor
loopless
length
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Withdrawn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
EP00950723A
Other languages
German (de)
English (en)
Other versions
EP1207784A4 (fr
Inventor
Ogan Ocali
Ergin Atalar
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.)
Johns Hopkins University
Original Assignee
Johns Hopkins University
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 Johns Hopkins University filed Critical Johns Hopkins University
Publication of EP1207784A1 publication Critical patent/EP1207784A1/fr
Publication of EP1207784A4 publication Critical patent/EP1207784A4/fr
Withdrawn legal-status Critical Current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
    • G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
    • G01R33/34084—Constructional details, e.g. resonators, specially adapted to MR implantable coils or coils being geometrically adaptable to the sample, e.g. flexible coils or coils comprising mutually movable parts
    • 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
    • G01R33/341—Constructional details, e.g. resonators, specially adapted to MR comprising surface 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
    • G01R33/3628—Tuning/matching of the transmit/receive coil

Abstract

L'invention concerne un procédé d'imagerie par résonance magnétique, et d'analyse spectroscopique, d'un spécimen. Ce procédé comprend les étapes consistant à placer le spécimen dans un champ magnétique principal, à introduire une antenne comprenant une portion d'antenne non-cadre (22), au proche voisinage du spécimen, à produire des impulsions de fréquence radioélectrique dans une région cible, afin d'exciter des signaux de résonance magnétique, à appliquer des impulsions magnétiques à gradient, sur la région cible, au moyen de l'antenne recevant les signaux de résonance magnétique, et à émettre en réponse des signaux de sortie. Un processeur traite ces signaux de sortie afin de fournir des informations d'images destinées à être affichées de la manière voulue. Un procédé préféré met en oeuvre une antenne souple. Un autre procédé préféré implique la mise en oeuvre d'un circuit d'adaptation d'impédance (30), connecté électriquement entre l'antenne non-cadre et le processeur, aux fins d'accroissement du transfert de l'énergie de fréquence radioélectrique, et d'accroissement du rapport signal/bruit de résonance magnétique, entre l'antenne non-cadre (22) et le processeur.
EP00950723A 1999-07-26 2000-07-26 Procede d'imagerie par resonance magnetique et d'analyse spectroscopique, et appareil associe Withdrawn EP1207784A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US360144 1994-12-20
US36014499A 1999-07-26 1999-07-26
PCT/US2000/020346 WO2001006925A1 (fr) 1999-07-26 2000-07-26 Procede d'imagerie par resonance magnetique et d'analyse spectroscopique, et appareil associe

Publications (2)

Publication Number Publication Date
EP1207784A1 true EP1207784A1 (fr) 2002-05-29
EP1207784A4 EP1207784A4 (fr) 2006-07-05

Family

ID=23416780

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00950723A Withdrawn EP1207784A4 (fr) 1999-07-26 2000-07-26 Procede d'imagerie par resonance magnetique et d'analyse spectroscopique, et appareil associe

Country Status (3)

Country Link
EP (1) EP1207784A4 (fr)
AU (1) AU6378700A (fr)
WO (1) WO2001006925A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8256430B2 (en) 2001-06-15 2012-09-04 Monteris Medical, Inc. Hyperthermia treatment and probe therefor
AUPS295002A0 (en) * 2002-06-13 2002-07-04 Thorlock International Limited A receive system for high q antennas in nqr
DE10240960A1 (de) * 2002-09-05 2004-03-18 Philips Intellectual Property & Standards Gmbh Katheter, insbesondere zur Verwendung bei der MR-Bildgebung
EP2440129A4 (fr) 2009-06-08 2015-06-03 Mri Interventions Inc Systèmes chirurgicaux guidés par irm présentant des plans de balayage préétablis
EP2442718B1 (fr) 2009-06-16 2018-04-25 MRI Interventions, Inc. Dispositifs guidés par irm et systèmes d'intervention guidés par irm qui peuvent suivre et générer des visualisations dynamiques des dispositifs presque en temps réel
US8979871B2 (en) 2009-08-13 2015-03-17 Monteris Medical Corporation Image-guided therapy of a tissue
US9733324B2 (en) * 2011-07-04 2017-08-15 Koninklijke Philips N.V. Magnetic resonance imaging system with a multi-channel impedance matching network
US9486170B2 (en) 2014-03-18 2016-11-08 Monteris Medical Corporation Image-guided therapy of a tissue
WO2015143026A1 (fr) 2014-03-18 2015-09-24 Monteris Medical Corporation Thérapie guidée par l'image d'un tissu
US10675113B2 (en) 2014-03-18 2020-06-09 Monteris Medical Corporation Automated therapy of a three-dimensional tissue region
US10327830B2 (en) 2015-04-01 2019-06-25 Monteris Medical Corporation Cryotherapy, thermal therapy, temperature modulation therapy, and probe apparatus therefor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997040396A1 (fr) * 1996-04-25 1997-10-30 The Johns Hopkins University Procede d'imagerie rmn et d'analyse stereoscopique et appareillage associe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997040396A1 (fr) * 1996-04-25 1997-10-30 The Johns Hopkins University Procede d'imagerie rmn et d'analyse stereoscopique et appareillage associe

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
OGAN OCALI ET AL: "INTRAVASCULAR MAGNETIC RESONANCE IMAGING USING A LOOPLESS CATHETER ANTENNA" MAGNETIC RESONANCE IN MEDICINE, ACADEMIC PRESS, DULUTH, MN, US, vol. 37, no. 1, January 1997 (1997-01), pages 112-118, XP000636879 ISSN: 0740-3194 *
See also references of WO0106925A1 *
SHUNK K A ET AL: "Transesophageal magnetic resonance imaging" MAGNETIC RESONANCE IN MEDICINE WILEY USA, vol. 41, no. 4, April 1999 (1999-04), pages 722-726, XP002377548 ISSN: 0740-3194 *

Also Published As

Publication number Publication date
EP1207784A4 (fr) 2006-07-05
AU6378700A (en) 2001-02-13
WO2001006925A1 (fr) 2001-02-01

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