BR112012029855A8 - Sistema de exame de ressonância magnética para o exame de um objeto, método e programa de computador - Google Patents

Sistema de exame de ressonância magnética para o exame de um objeto, método e programa de computador

Info

Publication number
BR112012029855A8
BR112012029855A8 BR112012029855A BR112012029855A BR112012029855A8 BR 112012029855 A8 BR112012029855 A8 BR 112012029855A8 BR 112012029855 A BR112012029855 A BR 112012029855A BR 112012029855 A BR112012029855 A BR 112012029855A BR 112012029855 A8 BR112012029855 A8 BR 112012029855A8
Authority
BR
Brazil
Prior art keywords
gradient
magnetic resonance
damaged
examination
echo signals
Prior art date
Application number
BR112012029855A
Other languages
English (en)
Other versions
BR112012029855A2 (pt
Inventor
Samuel Van Den Brink Johan
Original Assignee
Koninklijke Philips Electronics Nv
Koninklijke Philips Nv
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 Koninklijke Philips Electronics Nv, Koninklijke Philips Nv filed Critical Koninklijke Philips Electronics Nv
Publication of BR112012029855A2 publication Critical patent/BR112012029855A2/pt
Publication of BR112012029855A8 publication Critical patent/BR112012029855A8/pt

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
    • G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
    • G01R33/3852—Gradient amplifiers; means for controlling the application of a gradient magnetic field to the sample, e.g. a gradient signal synthesizer
    • 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
    • G01R33/285—Invasive instruments, e.g. catheters or biopsy needles, specially adapted for tracking, guiding or visualization by NMR
    • 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
    • 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
    • G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
    • G01R33/5613—Generating steady state signals, e.g. low flip angle sequences [FLASH]
    • 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
    • G01R33/288—Provisions within MR facilities for enhancing safety during MR, e.g. reduction of the specific absorption rate [SAR], detection of ferromagnetic objects in the scanner room

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

SISTEMA DE EXAME DE RESSONÂNCIA MAGNÉTICA PARA O EXAME DE UM OBJETO, MÉTODO E PROGRAMA DE COMPUTADOR. Sistema de exame de ressonância magnética para o exame de um objeto compreende um sistema de RF para gerar um campo de transmissão de RF e sistema gradiente para gerar campos gradientes magnéticos temporários. Um módulo de controle inclui um controlador de sequência para controlar o sistema de RF e o sistema gradiente para produzir as sequências de aquisição incluindo pulsos de RF e pulsos gradientes magnéticos para gerar sinais de ressonância magnética. O controlador de sequência é configurado para produzir uma varredura de detecção incluindo uma sequência de aquisição de gradiente eco de estado estável para gerar sinais de gradiente eco de estado estável e uma sequência de aquisição de eco danificada por RF para produzir sinais de eco danificados por RF. O módulo de controle ainda inclui uma unidade de análise para comparar os sinais de gradiente eco aos sinais de eco danificados por RF e para a detecção de um instrumento no objeto da comparação dos gradientes eco e dos ecos danificados por RF.
BR112012029855A 2010-05-27 2011-05-19 Sistema de exame de ressonância magnética para o exame de um objeto, método e programa de computador BR112012029855A8 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP10164115 2010-05-27
PCT/IB2011/052195 WO2011148300A1 (en) 2010-05-27 2011-05-19 Magnetic resonance examination with instrument detection

Publications (2)

Publication Number Publication Date
BR112012029855A2 BR112012029855A2 (pt) 2016-08-09
BR112012029855A8 true BR112012029855A8 (pt) 2016-09-13

Family

ID=44259920

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112012029855A BR112012029855A8 (pt) 2010-05-27 2011-05-19 Sistema de exame de ressonância magnética para o exame de um objeto, método e programa de computador

Country Status (7)

Country Link
US (1) US9297870B2 (pt)
EP (1) EP2577338A1 (pt)
JP (2) JP5799087B2 (pt)
CN (1) CN102906586B (pt)
BR (1) BR112012029855A8 (pt)
RU (1) RU2559562C2 (pt)
WO (1) WO2011148300A1 (pt)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8970217B1 (en) 2010-04-14 2015-03-03 Hypres, Inc. System and method for noise reduction in magnetic resonance imaging
US9297870B2 (en) * 2010-05-27 2016-03-29 Koninklijke Philips N.V. Magnetic resonance examination with instrument detection
CN104685368B (zh) 2012-10-02 2017-09-05 皇家飞利浦有限公司 用于耐金属mr成像的方法和设备
DE102014206011A1 (de) 2013-07-02 2015-01-08 Siemens Aktiengesellschaft Verfahren zur Aufnahme von Magnetresonanzdaten eines ein Metallobjekt enthaltenden Zielbereichs und Magnetresonanzeinrichtung
CN104345288B (zh) * 2013-07-31 2018-01-16 上海联影医疗科技有限公司 磁共振梯度场刺激水平计算方法、装置及控制方法、系统
DE102014206917B3 (de) 2014-04-10 2015-09-03 Siemens Aktiengesellschaft Reduzierung von Artefakten in MR-Bildern aufgrund von Suszeptibilitätssprüngen durch Ersetzen von Rohdaten aus Messungen mit einer zusätzlichen Dephasierung der Spins
JP6684832B2 (ja) * 2015-06-26 2020-04-22 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 効率的なｍｒｉワークフローのために金属インプラントを検出し磁気共鳴パルスシーケンスを選択するための方法及び検出ユニット
JP6537540B2 (ja) * 2017-01-25 2019-07-03 キヤノン株式会社 処理装置

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US7254437B2 (en) * 1998-04-17 2007-08-07 Kabushiki Kaisha Toshiba MR imaging providing tissue/blood contrast image
US7050855B2 (en) 2002-01-29 2006-05-23 Medtronic, Inc. Medical implantable system for reducing magnetic resonance effects
US7315760B2 (en) 2003-10-15 2008-01-01 Ge Medical Systems Information Technologies, Inc. Detection of function of implanted medical devices
JP2005152114A (ja) 2003-11-21 2005-06-16 Ge Medical Systems Global Technology Co Llc Ｍｒｉ方法およびｍｒｉ装置
EP1591799A1 (en) * 2004-04-29 2005-11-02 Koninklijke Philips Electronics N.V. Magnetic resonance steady state imaging
US7053611B2 (en) * 2004-06-04 2006-05-30 Schlumberger Technology Corporation Method and apparatus for using pulsed field gradient NMR measurements to determine fluid properties in a fluid sampling well logging tool
EP1793728B1 (en) 2004-07-27 2015-04-15 The Cleveland Clinic Foundation Integrated system for mri-safe implantable devices
US7561915B1 (en) 2004-12-17 2009-07-14 Cardiac Pacemakers, Inc. MRI system having implantable device safety features
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JP5037075B2 (ja) * 2005-12-22 2012-09-26 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 磁気共鳴イメージング装置
US9549688B2 (en) 2006-04-24 2017-01-24 Medtronic, Inc. Implantable medical device detection
US7292039B1 (en) * 2006-08-21 2007-11-06 Siemens Medical Solutions Usa, Inc. Contrast enhancement in magnetic resonance imaging
JP5288745B2 (ja) * 2006-09-13 2013-09-11 株式会社東芝 磁気共鳴イメージング装置
EP2156206A1 (en) * 2007-05-31 2010-02-24 Koninklijke Philips Electronics N.V. Method of automatically acquiring magnetic resonance image data
JP5037236B2 (ja) * 2007-06-20 2012-09-26 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 磁気共鳴イメージング装置および磁気共鳴画像生成方法
JP5455926B2 (ja) * 2007-12-21 2014-03-26 コーニンクレッカ フィリップス エヌ ヴェ 磁気共鳴安全性監視システムおよび方法
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US9297870B2 (en) * 2010-05-27 2016-03-29 Koninklijke Philips N.V. Magnetic resonance examination with instrument detection
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DE102014206011A1 (de) * 2013-07-02 2015-01-08 Siemens Aktiengesellschaft Verfahren zur Aufnahme von Magnetresonanzdaten eines ein Metallobjekt enthaltenden Zielbereichs und Magnetresonanzeinrichtung

Also Published As

Publication number Publication date
BR112012029855A2 (pt) 2016-08-09
US20130088229A1 (en) 2013-04-11
US9297870B2 (en) 2016-03-29
RU2012157092A (ru) 2014-07-10
CN102906586B (zh) 2015-09-16
JP5997334B2 (ja) 2016-09-28
JP2016005597A (ja) 2016-01-14
JP5799087B2 (ja) 2015-10-21
RU2559562C2 (ru) 2015-08-10
WO2011148300A1 (en) 2011-12-01
CN102906586A (zh) 2013-01-30
EP2577338A1 (en) 2013-04-10
JP2013529959A (ja) 2013-07-25

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Legal Events

Date Code Title Description
B25D Requested change of name of applicant approved

Owner name: KONINKLIJKE PHILIPS N.V. (NL)

B25G Requested change of headquarter approved

Owner name: KONINKLIJKE PHILIPS N.V. (NL)

B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 7A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]