BR112021024937A2 - Método e sistema para formação de imagem por ressonância magnética - Google Patents

Método e sistema para formação de imagem por ressonância magnética

Info

Publication number
BR112021024937A2
BR112021024937A2 BR112021024937A BR112021024937A BR112021024937A2 BR 112021024937 A2 BR112021024937 A2 BR 112021024937A2 BR 112021024937 A BR112021024937 A BR 112021024937A BR 112021024937 A BR112021024937 A BR 112021024937A BR 112021024937 A2 BR112021024937 A2 BR 112021024937A2
Authority
BR
Brazil
Prior art keywords
magnetic resonance
resonance imaging
reconstructions
rebuild
compressibility
Prior art date
Application number
BR112021024937A
Other languages
English (en)
Inventor
Aleksandar Nacev
Muller Gomes
Pulkit Malik
Ram Narayanan
Original Assignee
Promaxo Inc
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 Promaxo Inc filed Critical Promaxo Inc
Publication of BR112021024937A2 publication Critical patent/BR112021024937A2/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
    • G01R33/44—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
    • G01R33/5608—Data processing and visualization specially adapted for MR, e.g. for feature analysis and pattern recognition on the basis of measured MR data, segmentation of measured MR data, edge contour detection on the basis of measured MR data, for enhancing measured MR data in terms of signal-to-noise ratio by means of noise filtering or apodization, for enhancing measured MR data in terms of resolution by means for deblurring, windowing, zero filling, or generation of gray-scaled images, colour-coded images or images displaying vectors instead of pixels
    • 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
    • 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]
    • G01R33/445—MR involving a non-standard magnetic field B0, e.g. of low magnitude as in the earth's magnetic field or in nanoTesla spectroscopy, comprising a polarizing magnetic field for pre-polarisation, B0 with a temporal variation of its magnitude or direction such as field cycling of B0 or rotation of the direction of B0, or spatially inhomogeneous B0 like in fringe-field MR or in stray-field 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
    • G01R33/4818—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space
    • G01R33/482—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space using a Cartesian trajectory
    • G01R33/4822—MR characterised by data acquisition along a specific k-space trajectory or by the temporal order of k-space coverage, e.g. centric or segmented coverage of k-space using a Cartesian trajectory in three dimensions
    • 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
    • G01R33/56563—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of the main magnetic field B0, e.g. temporal variation of the magnitude or spatial inhomogeneity of B0
    • 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
    • G01R33/56572—Correction of image distortions, e.g. due to magnetic field inhomogeneities caused by a distortion of a gradient magnetic field, e.g. non-linearity of a gradient magnetic field

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Signal Processing (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Artificial Intelligence (AREA)
  • Nonlinear Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

método e sistema para formação de imagem por ressonância magnética. algumas modalidades da presente descrição descrevem sistemas e métodos para reconstrução de imagem por ressonância magnética robusta que podem moldar para todos ou quase todos os componentes no sistema de formação de imagem por ressonância magnética, que possuem recursos de compressibilidade para acelerar reconstruções e que podem ser otimizados de modo que a reconstrução possa ser executada dentro de um curto período de tempo.
BR112021024937A 2019-06-25 2020-06-25 Método e sistema para formação de imagem por ressonância magnética BR112021024937A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962866533P 2019-06-25 2019-06-25
PCT/US2020/039667 WO2020264194A1 (en) 2019-06-25 2020-06-25 Systems and methods for image reconstruction in magnetic resonance imaging

Publications (1)

Publication Number Publication Date
BR112021024937A2 true BR112021024937A2 (pt) 2022-01-25

Family

ID=74059965

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112021024937A BR112021024937A2 (pt) 2019-06-25 2020-06-25 Método e sistema para formação de imagem por ressonância magnética

Country Status (12)

Country Link
US (1) US11953573B2 (pt)
EP (1) EP3990935A4 (pt)
JP (1) JP2022537916A (pt)
KR (1) KR20220024425A (pt)
CN (1) CN113994225A (pt)
AU (1) AU2020308866A1 (pt)
BR (1) BR112021024937A2 (pt)
CA (1) CA3142022A1 (pt)
IL (1) IL289101A (pt)
MX (1) MX2021015362A (pt)
SG (1) SG11202112987SA (pt)
WO (1) WO2020264194A1 (pt)

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JP2022537916A (ja) 2019-06-25 2022-08-31 プロマクソ インコーポレイテッド 磁気共鳴撮像における画像再構成のためのシステムおよび方法
US20230106912A1 (en) 2020-01-23 2023-04-06 Promaxo, Inc. Mri-guided robotic systems and methods for biopsy
CN115280172A (zh) 2020-02-20 2022-11-01 普罗马克索公司 用于单侧磁共振成像的射频接收线圈网络
CA3171251A1 (en) 2020-03-09 2021-09-16 Muller Francis DE MATOS GOMES Pulse sequences and frequency sweep pulses for single-sided magnetic resonance imaging
WO2021183484A1 (en) 2020-03-09 2021-09-16 Promaxo, Inc. Phase encoding with frequency sweep pulsed for magnetic resonance imaging in inhomogeneous magnetic fields
IL308024A (en) 2021-04-26 2023-12-01 Promaxo Inc An interventional localization guide and method for MRI-guided hip pelvis-related interventions
AU2022431668A1 (en) 2022-01-04 2024-07-18 Promaxo, Inc. Relaxation-based magnetic resonance thermometry with a low-field single-sided mri scanner

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Also Published As

Publication number Publication date
AU2020308866A1 (en) 2021-12-23
SG11202112987SA (en) 2021-12-30
CN113994225A (zh) 2022-01-28
US20220342020A1 (en) 2022-10-27
WO2020264194A1 (en) 2020-12-30
CA3142022A1 (en) 2020-12-30
KR20220024425A (ko) 2022-03-03
MX2021015362A (es) 2022-01-24
EP3990935A4 (en) 2024-01-03
JP2022537916A (ja) 2022-08-31
IL289101A (en) 2022-02-01
US11953573B2 (en) 2024-04-09
EP3990935A1 (en) 2022-05-04

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