BR112022017847A2 - Método de geração de imagens de um slab, e, aparelho de geração de imagens magnéticas - Google Patents

Método de geração de imagens de um slab, e, aparelho de geração de imagens magnéticas

Info

Publication number
BR112022017847A2
BR112022017847A2 BR112022017847A BR112022017847A BR112022017847A2 BR 112022017847 A2 BR112022017847 A2 BR 112022017847A2 BR 112022017847 A BR112022017847 A BR 112022017847A BR 112022017847 A BR112022017847 A BR 112022017847A BR 112022017847 A2 BR112022017847 A2 BR 112022017847A2
Authority
BR
Brazil
Prior art keywords
frequency sweep
slab
excitation pulse
images
sweep excitation
Prior art date
Application number
BR112022017847A
Other languages
English (en)
Inventor
Gomes Muller
Nacev Aleksandar
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 BR112022017847A2 publication Critical patent/BR112022017847A2/pt

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385—Arrangements for measuring battery or accumulator variables
    • 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
    • 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
    • G01R33/28—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
    • G01R33/3808—Magnet assemblies for single-sided MR wherein the magnet assembly is located on one side of a subject only; Magnet assemblies for inside-out MR, e.g. for MR in a borehole or in a blood vessel, or magnet assemblies for fringe-field MR
    • 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]
    • G01R33/48—NMR imaging systems
    • G01R33/483—NMR imaging systems with selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy
    • G01R33/4833—NMR imaging systems with selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy using spatially selective excitation of the volume of interest, e.g. selecting non-orthogonal or inclined slices
    • G01R33/4835—NMR imaging systems with selection of signals or spectra from particular regions of the volume, e.g. in vivo spectroscopy using spatially selective excitation of the volume of interest, e.g. selecting non-orthogonal or inclined slices of multiple slices

Landscapes

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

Abstract

MÉTODO DE GERAÇÃO DE IMAGENS DE UM SLAB, E, APARELHO DE GERAÇÃO DE IMAGENS MAGNÉTICAS. São divulgados aparelhos, sistemas e métodos de MRI unilateral. Um método pode incluir a transmissão de um pulso de excitação de varredura de frequência compreendendo uma varredura de frequência baixa a alta; codificar a fase durante o pulso de excitação de varredura de frequência; e ajustar a quantidade de fase acumulada durante o pulso de excitação de varredura de frequência de fatias adjacentes no slab. O pulso de excitação de varredura de frequência pode ser um pulso de chirp. A codificação desta forma pode impedir que os ecos de spin desviem e impedir a truncagem do espaço k em certos casos. Além disso, as imagens resultantes podem ser combinadas de forma mais eficiente.
BR112022017847A 2020-03-09 2021-03-09 Método de geração de imagens de um slab, e, aparelho de geração de imagens magnéticas BR112022017847A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202062987292P 2020-03-09 2020-03-09
PCT/US2021/021464 WO2021183484A1 (en) 2020-03-09 2021-03-09 Phase encoding with frequency sweep pulsed for magnetic resonance imaging in inhomogeneous magnetic fields

Publications (1)

Publication Number Publication Date
BR112022017847A2 true BR112022017847A2 (pt) 2022-11-01

Family

ID=75278367

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112022017847A BR112022017847A2 (pt) 2020-03-09 2021-03-09 Método de geração de imagens de um slab, e, aparelho de geração de imagens magnéticas

Country Status (11)

Country Link
US (1) US20230104153A1 (pt)
EP (1) EP4117515A1 (pt)
JP (1) JP2023516474A (pt)
KR (1) KR20220167278A (pt)
CN (1) CN115243609A (pt)
AU (1) AU2021235959A1 (pt)
BR (1) BR112022017847A2 (pt)
CA (1) CA3171080A1 (pt)
IL (1) IL296213A (pt)
MX (1) MX2022011198A (pt)
WO (1) WO2021183484A1 (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023133071A1 (en) * 2022-01-04 2023-07-13 Promaxo, Inc. Relaxation-based magnetic resonance thermometry with a low-field single-sided mri scanner

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5023554A (en) * 1989-05-22 1991-06-11 The Reagents Of The University Of California Fringe field MRI
US5001429A (en) * 1989-11-21 1991-03-19 General Electric Company Removal of truncation artifacts in NMR imaging
US7535228B2 (en) * 2006-03-21 2009-05-19 Radiation Monitoring Devices, Inc. Sensor array for nuclear magnetic resonance imaging systems and method
DE102008020107B4 (de) * 2008-04-22 2011-08-25 Bruker BioSpin GmbH, 76287 Kompakte supraleitende Magnetanordnung mit aktiver Abschirmung, wobei die Abschirmspule zur Feldformung eingesetzt wird
WO2010114959A1 (en) * 2009-04-02 2010-10-07 Mayo Foundation For Medical Education And Research Single-sided magnetic resonance imaging system suitable for performing magnetic resonance elastography
DE102011007148A1 (de) * 2011-04-11 2012-10-11 Siemens Aktiengesellschaft Verfahren zur Bestrahlungsplanung und Bestrahlungsplanungseinrichtung
DE102012216007A1 (de) * 2012-09-10 2014-03-13 Siemens Aktiengesellschaft MR Patiententisch mit integrierten RF Einrichtungen (RF PA)
US9903928B2 (en) * 2013-02-06 2018-02-27 Regents Of The University Of Minnesota Beam steering with resonance along a trajectory
CN103885017B (zh) * 2014-02-20 2017-02-22 厦门大学 基于单扫描正交时空编码磁共振成像的图像畸变校正方法
JP2020523172A (ja) 2017-06-08 2020-08-06 ワインバーグ・メディカル・フィジックス・インコーポレイテッドＷｅｉｎｂｅｒｇ Ｍｅｄｉｃａｌ Ｐｈｙｓｉｃｓ， Ｉｎｃ． 介入のための開口を備える片側磁気共鳴画像システムおよび当該システムを動作させるための手法
CN113767297A (zh) 2019-02-15 2021-12-07 普罗马克索公司 用于超低场弛豫色散的系统和方法
BR112021016350B1 (pt) 2019-02-22 2023-12-26 Promaxo, Inc Bobina para aparelho de ressonância magnética unilateral com ajuste variável e método para operar uma bobina para uso em um aparelho de ressonância magnética nuclear ou de ressonância magnética fundamentos
KR20220007039A (ko) 2019-02-22 2022-01-18 프로맥소 인크. 자기 공명 이미징을 수행하기 위한 시스템들 및 방법들
JP7119241B2 (ja) 2019-03-25 2022-08-16 プロマクソ インコーポレイテッド 片面式高速ｍｒｉ勾配磁場コイルおよびその応用
MX2021011114A (es) 2019-03-25 2021-10-13 Promaxo Inc Sistemas y metodos de adquisicion volumetrica en un sistema de formacion de imagenes por resonancia magnetica (mri) de un solo lado.
KR20220024425A (ko) 2019-06-25 2022-03-03 프로맥소 인크. 자기 공명 이미징에서의 이미지 재구성을 위한 시스템들 및 방법들

Also Published As

Publication number Publication date
CA3171080A1 (en) 2021-09-16
AU2021235959A1 (en) 2022-11-03
IL296213A (en) 2022-11-01
KR20220167278A (ko) 2022-12-20
MX2022011198A (es) 2022-09-19
US20230104153A1 (en) 2023-04-06
JP2023516474A (ja) 2023-04-19
WO2021183484A1 (en) 2021-09-16
CN115243609A (zh) 2022-10-25
EP4117515A1 (en) 2023-01-18

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