BR112014028903A2 - sistema de imagem por ressonância magnética, e método de reprodução de imagem por ressonância magnética - Google Patents

sistema de imagem por ressonância magnética, e método de reprodução de imagem por ressonância magnética

Info

Publication number
BR112014028903A2
BR112014028903A2 BR112014028903A BR112014028903A BR112014028903A2 BR 112014028903 A2 BR112014028903 A2 BR 112014028903A2 BR 112014028903 A BR112014028903 A BR 112014028903A BR 112014028903 A BR112014028903 A BR 112014028903A BR 112014028903 A2 BR112014028903 A2 BR 112014028903A2
Authority
BR
Brazil
Prior art keywords
magnetic resonance
gradient
resonance imaging
radio frequency
coils
Prior art date
Application number
BR112014028903A
Other languages
English (en)
Inventor
Kenneth Jones Craig
Suzanne Kotys Melanie
E Fischer Stefan
Original Assignee
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 Nv filed Critical Koninklijke Philips Nv
Publication of BR112014028903A2 publication Critical patent/BR112014028903A2/pt

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves  involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
    • 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
    • G01R33/5615—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE]
    • G01R33/5618—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE] using both RF and gradient refocusing, e.g. GRASE
    • 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
    • G01R33/5615—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE]
    • G01R33/5616—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE] using gradient refocusing, e.g. EPI
    • 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
    • G01R33/563—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution of moving material, e.g. flow contrast angiography
    • G01R33/56341—Diffusion imaging
    • 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
    • G01R33/4828—Resolving the MR signals of different chemical species, e.g. water-fat imaging

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Health & Medical Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

resumo sistema de imagem por ressonância magnética, e método de reprodução de imagem por ressonância magnética um sistema de imagem por ressonância magnética (78) inclui um dispositivo de imagem por ressonância magnética (80), um ou mais processadores (104), e uma tela (106). o dispositivo de imagem por ressonância magnética (80) inclui um ímã (82), bobinas de gradiente (88), e uma ou mais bobinas de rádio frequência (92). o ímã (82) gera um campo b0. as bobinas de gradiente (88) aplicam campos de gradiente ao campo b0. uma ou mais bobinas de rádio frequência (92) geram um pulso de rádio frequência para excitar a ressonância magnética e medir os ecos de gradiente gerados. um ou mais processadores (104) são configurados para ativar (116) uma ou mais bobinas de rádio frequência (92) para gerar uma série de pulsos de rádio frequência espaçados por períodos de repetição e para induzir a ressonância magnética. um ou mais processadores (104) são configurados para controlar (118) as bobinas de gradiente para aplicar após cada pulso rf pulsos do campo de gradiente de leitura que redirecionam a ressonância em uma pluralidade de ecos de gradiente, alternam e redirecionam os pulsos de campo do gradiente que alternam e redirecionam pelo menos um dos ecos em um período de repetição subsequente, e recebem e demodulam os ecos de gradiente para formar as linhas de dados do espaço k. um ou mais processadores são configurados para reconstruir (124) uma ou mais imagens de um ou mais ecos de gradiente medidos. uma tela (106) exibe uma ou mais imagens reconstruídas. 1/1
BR112014028903A 2012-05-23 2013-05-21 sistema de imagem por ressonância magnética, e método de reprodução de imagem por ressonância magnética BR112014028903A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261650501P 2012-05-23 2012-05-23
PCT/IB2013/054183 WO2013175403A1 (en) 2012-05-23 2013-05-21 Multi-echo presto

Publications (1)

Publication Number Publication Date
BR112014028903A2 true BR112014028903A2 (pt) 2017-06-27

Family

ID=48746607

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112014028903A BR112014028903A2 (pt) 2012-05-23 2013-05-21 sistema de imagem por ressonância magnética, e método de reprodução de imagem por ressonância magnética

Country Status (7)

Country Link
US (1) US10151815B2 (pt)
EP (1) EP2852320B1 (pt)
JP (1) JP6265976B2 (pt)
CN (1) CN104363829B (pt)
BR (1) BR112014028903A2 (pt)
RU (1) RU2639017C2 (pt)
WO (1) WO2013175403A1 (pt)

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US10175322B2 (en) * 2014-01-28 2019-01-08 Koninklijke Philips N.V. Zero echo time MR imaging with sampling of K-space center
CN105334321B (zh) * 2014-07-31 2017-07-18 西门子(深圳)磁共振有限公司 磁共振成像方法和系统
US20170131374A1 (en) * 2015-11-10 2017-05-11 Samsung Electronics Co., Ltd. Magnetic resonance imaging apparatus and image processing method thereof
CN105785298B (zh) * 2016-03-10 2018-08-17 大连锐谱科技有限责任公司 一种高精度三维化学位移成像方法
CN109310361B (zh) 2016-04-07 2022-04-26 上海联影医疗科技股份有限公司 用于快速磁共振成像的系统和方法
CN109073720B (zh) * 2016-04-26 2022-02-11 皇家飞利浦有限公司 静音磁共振指纹识别
KR101844514B1 (ko) * 2016-09-02 2018-04-02 삼성전자주식회사 자기 공명 영상 장치 및 자기 공명 영상 획득 방법
JP6873686B2 (ja) * 2016-12-26 2021-05-19 キヤノンメディカルシステムズ株式会社 磁気共鳴イメージング装置
US20230148948A1 (en) * 2017-02-08 2023-05-18 Livivos Inc. Nuclear magnetic resonance systems and methods for noninvasive and in-vivo measurements using a unilateral magnet
US10809339B2 (en) * 2017-03-24 2020-10-20 GE Precision Healthcare LLC System and method for performing magnetic resonance diffusion weighted imaging of an object
BR112020004488A8 (pt) * 2017-09-07 2023-02-14 Cr Dev Ab Métodos para formação de imagem de ressonância magnética ponderada por difusão e para projetar um gradiente de campo magnético dependente de tempo assimétrico
EP3495832A1 (en) * 2017-12-11 2019-06-12 Koninklijke Philips N.V. Diffusion mr imaging with fat suppression
US10712412B2 (en) * 2018-04-23 2020-07-14 Wisconsin Alumni Research Foundation System and method for stimulated echo based mapping (STEM) using magnetic resonance imaging (MRI)
US11016161B2 (en) * 2018-06-25 2021-05-25 Samsung Electronics Co., Ltd. Method and an apparatus for reconstructing magnetic resonance image
TW202012951A (zh) * 2018-07-31 2020-04-01 美商超精細研究股份有限公司 低場漫射加權成像
CN110992435B (zh) * 2019-11-06 2023-10-20 上海东软医疗科技有限公司 图像重建方法及设备、成像数据的处理方法及装置
JP7429437B2 (ja) 2020-05-29 2024-02-08 株式会社PixSpace 画像処理装置、画像処理方法および画像処理プログラム
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JPWO2022209298A1 (pt) * 2021-03-29 2022-10-06

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Also Published As

Publication number Publication date
CN104363829A (zh) 2015-02-18
WO2013175403A1 (en) 2013-11-28
US20150108976A1 (en) 2015-04-23
EP2852320A1 (en) 2015-04-01
CN104363829B (zh) 2017-07-21
JP6265976B2 (ja) 2018-01-24
US10151815B2 (en) 2018-12-11
JP2015517375A (ja) 2015-06-22
RU2639017C2 (ru) 2017-12-19
RU2014152064A (ru) 2016-07-20
EP2852320B1 (en) 2019-03-27

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Legal Events

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B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

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

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2516 DE 26-03-2019 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.