BR112014009133A2 - sistema de ressonância magnética, e, método de ressonância magnética - Google Patents
sistema de ressonância magnética, e, método de ressonância magnéticaInfo
- Publication number
- BR112014009133A2 BR112014009133A2 BR112014009133A BR112014009133A BR112014009133A2 BR 112014009133 A2 BR112014009133 A2 BR 112014009133A2 BR 112014009133 A BR112014009133 A BR 112014009133A BR 112014009133 A BR112014009133 A BR 112014009133A BR 112014009133 A2 BR112014009133 A2 BR 112014009133A2
- Authority
- BR
- Brazil
- Prior art keywords
- sequence
- magnetic resonance
- scan
- data
- information
- Prior art date
Links
Classifications
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- 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
-
- 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
- G01R33/543—Control of the operation of the MR system, e.g. setting of acquisition parameters prior to or during MR data acquisition, dynamic shimming, use of one or more scout images for scan plane prescription
-
- 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
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
-
- 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
- G01R33/24—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/243—Spatial mapping of the polarizing magnetic field
-
- 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
- G01R33/24—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/246—Spatial mapping of the RF magnetic field B1
-
- 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
- G01R33/5611—Parallel magnetic resonance imaging, e.g. sensitivity encoding [SENSE], simultaneous acquisition of spatial harmonics [SMASH], unaliasing by Fourier encoding of the overlaps using the temporal dimension [UNFOLD], k-t-broad-use linear acquisition speed-up technique [k-t-BLAST], k-t-SENSE
-
- 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
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
- G01R33/56509—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to motion, displacement or flow, e.g. gradient moment nulling
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- High Energy & Nuclear Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
resumo sistema de ressonância magnética, e, método de ressonância magnética um típico protocolo clínico de rm é composto de vários conjuntos de varreduras em imagens adquiridas com diferentes contrastes, como t1, t2 e dwi. atualmente, a aquisição e a reconstrução dessas imagens são processadas individualmente. o método proposto trata a otimização de todas as aquisições e reconstruções como um único procedimento para uma mri mais robusta e mais rápida. a teoria atrás desse conceito é que as informações como o campo b0, b1, a trajetória otimizada de aquisição, os parâmetros de reconstrução etc., podem ser compartilhadas entre todas as varreduras para diferentes contrastes, já que o mesmo indivíduo é varrido no mesmo sistema usando a mesma bobina de rf. um método de imagens por ressonância magnética inclui uma primeira sequência de varredura de ressonância magnética 10 que salva uma armazenagem de dados, e realiza uma segunda sequência de varredura de ressonância magnética que usa uma armazenagem de dados da primeira sequência de varredura de ressonância magnética. um imã (10) gera um campo b0 em uma região de exame (12), um sistema de bobina gradiente (14, 22) cria gradientes magnéticos na região de exame, e um sistema de rf (16, 18, 20) induz ressonância e recebe sinais de ressonância de um indivíduo na região de exame 1. um ou mais processadores (30) são programados para realizar a sequência de pré-varredura de ressonância magnética para gerar informações de pré-varredura, realizar uma primeira sequência para gerar os dados da primeira sequência, refinar as informações de pré-varredura com os dados da primeira sequência, realizar a segunda sequência de imagens para gerar os dados da segunda sequência. além disso, os dados da segunda sequência ou são reconstruídos usando as informações refinadas de pré-varredura ou realizados usando as informações refinadas de pré-varredura. 1/1
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161548241P | 2011-10-18 | 2011-10-18 | |
PCT/IB2012/055471 WO2013057629A2 (en) | 2011-10-18 | 2012-10-10 | Mr imaging using shared information among images with different contrast |
Publications (2)
Publication Number | Publication Date |
---|---|
BR112014009133A2 true BR112014009133A2 (pt) | 2017-06-13 |
BR112014009133A8 BR112014009133A8 (pt) | 2017-06-20 |
Family
ID=47226231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR112014009133A BR112014009133A8 (pt) | 2011-10-18 | 2012-10-10 | sistema de ressonância magnética, e, método de ressonância magnética |
Country Status (8)
Country | Link |
---|---|
US (1) | US20140239949A1 (pt) |
EP (1) | EP2751586A2 (pt) |
JP (1) | JP2014530080A (pt) |
CN (1) | CN103930790A (pt) |
BR (1) | BR112014009133A8 (pt) |
IN (1) | IN2014CN02547A (pt) |
RU (1) | RU2014119867A (pt) |
WO (1) | WO2013057629A2 (pt) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105785297B (zh) * | 2014-12-18 | 2019-11-12 | 西门子(深圳)磁共振有限公司 | 多片层数据采集方法及其磁共振成像方法 |
JP6495057B2 (ja) * | 2015-03-16 | 2019-04-03 | キヤノンメディカルシステムズ株式会社 | Mri装置及び撮像時間短縮方法 |
EP3295199A1 (en) * | 2015-05-12 | 2018-03-21 | Koninklijke Philips N.V. | Magnetic resonance examination system with field probes |
WO2016186644A1 (en) * | 2015-05-18 | 2016-11-24 | The Johns Hopkins University | System and method of obtaining spatially-encoded nmr parameters from arbitrarily-shaped compartments and linear algebraic modeling |
EP3184071A1 (de) * | 2015-12-22 | 2017-06-28 | SpineMind AG | Vorrichtung für die intraoperative bildgesteuerte navigation bei chirurgischen eingriffen im bereich der wirbelsäule und im daran angrenzenden thorax-, becken- oder kopfbereich |
EP3414585A4 (en) * | 2016-02-12 | 2019-10-09 | Vigilance Health Imaging Network Inc. | CORRECTION CORRECTION OF SEVERAL MRI IMAGES ON THE BASIS OF A WHOLE-BODY REFERENCE PICTURE |
EP3457160A1 (en) * | 2017-09-14 | 2019-03-20 | Koninklijke Philips N.V. | Parallel magnetic resonance imaging with archived coil sensitivity maps |
EP3457156A1 (de) * | 2017-09-19 | 2019-03-20 | Siemens Healthcare GmbH | Integrierte steuervorrichtung für eine magnetresonanzeinrichtung |
CN108333544B (zh) * | 2018-01-03 | 2020-06-16 | 上海东软医疗科技有限公司 | 平面回波成像方法和装置 |
CN112423659B (zh) * | 2018-05-21 | 2023-04-21 | 上海联影医疗科技股份有限公司 | 多对比度磁共振成像的系统和方法 |
EP3719525A1 (en) | 2019-04-01 | 2020-10-07 | Koninklijke Philips N.V. | Correction of magnetic resonance images using simulated magnetic resonance images |
CN114515168B (zh) * | 2020-11-19 | 2024-04-16 | 深圳迈瑞生物医疗电子股份有限公司 | 一种超声成像系统 |
US20230194639A1 (en) * | 2021-12-16 | 2023-06-22 | Siemens Healthcare Gmbh | Method for acquiring a magnetic resonance image dataset of a subject and magnetic resonance imaging system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2737608B2 (ja) * | 1993-07-31 | 1998-04-08 | 株式会社島津製作所 | Mrイメージング装置 |
US5713358A (en) * | 1996-03-26 | 1998-02-03 | Wisconsin Alumni Research Foundation | Method for producing a time-resolved series of 3D magnetic resonance angiograms during the first passage of contrast agent |
JP3748661B2 (ja) * | 1997-04-07 | 2006-02-22 | ジーイー横河メディカルシステム株式会社 | Mri装置 |
JP5002099B2 (ja) * | 2001-08-31 | 2012-08-15 | 株式会社東芝 | 磁気共鳴イメージング装置 |
US7245124B2 (en) * | 2005-04-12 | 2007-07-17 | Mayo Foundation For Medical Education And Research | Under-sampled 3D MRI using a shells k-space sampling trajectory |
DE112009002242B4 (de) * | 2008-09-17 | 2019-05-16 | Philips Gmbh | Verfahren und Gerät zur Durchführung einer integrierten Homogenisierung des B1-Feldes |
US9198598B2 (en) * | 2010-03-31 | 2015-12-01 | Hitachi Medical Corporation | Magnetic resonance imaging apparatus and SAR adjustment method |
-
2012
- 2012-10-10 CN CN201280051013.0A patent/CN103930790A/zh active Pending
- 2012-10-10 US US14/352,599 patent/US20140239949A1/en not_active Abandoned
- 2012-10-10 JP JP2014536368A patent/JP2014530080A/ja active Pending
- 2012-10-10 RU RU2014119867/28A patent/RU2014119867A/ru not_active Application Discontinuation
- 2012-10-10 IN IN2547CHN2014 patent/IN2014CN02547A/en unknown
- 2012-10-10 EP EP12791256.6A patent/EP2751586A2/en not_active Withdrawn
- 2012-10-10 WO PCT/IB2012/055471 patent/WO2013057629A2/en active Application Filing
- 2012-10-10 BR BR112014009133A patent/BR112014009133A8/pt not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
US20140239949A1 (en) | 2014-08-28 |
JP2014530080A (ja) | 2014-11-17 |
EP2751586A2 (en) | 2014-07-09 |
CN103930790A (zh) | 2014-07-16 |
BR112014009133A8 (pt) | 2017-06-20 |
IN2014CN02547A (pt) | 2015-07-31 |
WO2013057629A2 (en) | 2013-04-25 |
WO2013057629A3 (en) | 2013-06-13 |
RU2014119867A (ru) | 2015-11-27 |
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Legal Events
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B11A | Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing | ||
B11Y | Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette] | ||
B350 | Update of information on the portal [chapter 15.35 patent gazette] |