WO2008139925A1 - 磁気共鳴イメージング装置 - Google Patents

磁気共鳴イメージング装置 Download PDF

Info

Publication number
WO2008139925A1
WO2008139925A1 PCT/JP2008/058211 JP2008058211W WO2008139925A1 WO 2008139925 A1 WO2008139925 A1 WO 2008139925A1 JP 2008058211 W JP2008058211 W JP 2008058211W WO 2008139925 A1 WO2008139925 A1 WO 2008139925A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
hybrid data
hybrid
magnetic resonance
imaging apparatus
Prior art date
Application number
PCT/JP2008/058211
Other languages
English (en)
French (fr)
Inventor
Yo Taniguchi
Shinji Kurokawa
Suguru Yokosawa
Yoshitaka Bito
Original Assignee
Hitachi Medical Corporation
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 Hitachi Medical Corporation filed Critical Hitachi Medical Corporation
Priority to US12/599,534 priority Critical patent/US8339136B2/en
Publication of WO2008139925A1 publication Critical patent/WO2008139925A1/ja

Links

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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7235—Details of waveform analysis
    • A61B5/7253—Details of waveform analysis characterised by using transforms
    • A61B5/7257—Details of waveform analysis characterised by using transforms using Fourier transforms
    • 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
    • G01R33/56375—Intentional motion of the sample during MR, e.g. moving table 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
    • G01R33/565—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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
    • A61B5/7207—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts
    • 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
    • G01R33/56375—Intentional motion of the sample during MR, e.g. moving table imaging
    • G01R33/56383—Intentional motion of the sample during MR, e.g. moving table imaging involving motion of the sample as a whole, e.g. multistation MR or MR with continuous table motion

Landscapes

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

Abstract

　ムービングテーブル撮影において、静磁場不均一下での撮影であってもアーチファクトの抑制されたによる画像を再構成する。 　磁気共鳴イメージング装置において、テーブルを移動させながら信号を計測して複数のデータセットを取得し、各データセットを読み出し方向に逆フーリエ変換し、ハイブリッドデータを得る。各ハイブリッドデータの、隣接するハイブリッドデータとの境界から一次元データを抽出し、この一次元データを用いてハイブリッドデータ境界における信号強度および位相の不連続を補正する補正値を求める。各ハイブリッドデータを逆フーリエ変換したデータにおいて補正値を用いた補正を行ない、最終的に信号強度と位相の連続性を有する画像を得る。
PCT/JP2008/058211 2007-05-11 2008-04-28 磁気共鳴イメージング装置 WO2008139925A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/599,534 US8339136B2 (en) 2007-05-11 2008-04-28 Magnetic resonance imaging apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007126549A JP5105586B2 (ja) 2007-05-11 2007-05-11 磁気共鳴イメージング装置
JP2007-126549 2007-05-11

Publications (1)

Publication Number Publication Date
WO2008139925A1 true WO2008139925A1 (ja) 2008-11-20

Family

ID=40002139

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/058211 WO2008139925A1 (ja) 2007-05-11 2008-04-28 磁気共鳴イメージング装置

Country Status (3)

Country Link
US (1) US8339136B2 (ja)
JP (1) JP5105586B2 (ja)
WO (1) WO2008139925A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008279102A (ja) * 2007-05-11 2008-11-20 Hitachi Medical Corp 磁気共鳴イメージング装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10068328B2 (en) * 2015-12-22 2018-09-04 Siemens Healthcare Gmbh Sparse iterative phase correction for MR partial fourier reconstruction
DE102017206853A1 (de) * 2017-04-24 2018-10-25 Siemens Healthcare Gmbh Automatisches Füllen von Messwarteschlangen mit variierenden Bildgebungsparametern

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006223869A (ja) * 2005-02-18 2006-08-31 Mayo Foundation For Medical Education & Research 連続的テーブル移動により取得された磁気共鳴画像におけるアーチファクトの除去方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05154130A (ja) * 1991-12-06 1993-06-22 Hitachi Ltd 体動アーチファクト除去方法
GB0109892D0 (en) * 2001-04-20 2001-06-13 Secr Defence Method and apparatus for reducing the effects of motion in an image
US6671536B2 (en) * 2001-09-25 2003-12-30 Wisconsin Alumni Research Foundation Magnetic resonance angiography using floating table projection imaging
GB0129465D0 (en) * 2001-12-08 2002-01-30 Qinetiq Ltd Method for compensating for effects of object motion in an image
US6707300B2 (en) * 2002-05-17 2004-03-16 Ge Medical Systems Global Technology Co., Llc Gradient non-linearity compensation in moving table MRI
JP4861821B2 (ja) * 2004-11-12 2012-01-25 株式会社東芝 磁気共鳴イメージング装置および画像データ補正装置
WO2007077832A1 (ja) * 2006-01-05 2007-07-12 Hitachi Medical Corporation 磁気共鳴イメージング装置
JP5105586B2 (ja) * 2007-05-11 2012-12-26 株式会社日立メディコ 磁気共鳴イメージング装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006223869A (ja) * 2005-02-18 2006-08-31 Mayo Foundation For Medical Education & Research 連続的テーブル移動により取得された磁気共鳴画像におけるアーチファクトの除去方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008279102A (ja) * 2007-05-11 2008-11-20 Hitachi Medical Corp 磁気共鳴イメージング装置

Also Published As

Publication number Publication date
US20100272336A1 (en) 2010-10-28
JP2008279102A (ja) 2008-11-20
US8339136B2 (en) 2012-12-25
JP5105586B2 (ja) 2012-12-26

Similar Documents

Publication Publication Date Title
WO2008152937A1 (ja) 磁気共鳴イメージング装置及び傾斜磁場に起因する誤差補正方法
Xiang et al. Correction for geometric distortion and N/2 ghosting in EPI by phase labeling for additional coordinate encoding (PLACE)
JP2012055684A5 (ja)
GB2557382A (en) System and method for removing gibbs artifact in medical imaging system
US10684345B2 (en) Reconstructing magnetic resonance images for contrasts
WO2011116785A8 (en) Method and device for reconstructing a sequence of mr images using a regularized nonlinear inverse reconstruction process
WO2010109348A3 (en) Motion detection and correction in magnetic resonance imaging for rigid, nonrigid, translational, rotational, and through-plane motion
EP1816485A3 (en) MRI involving motion detection and motion correction
EP1830198A3 (en) Data correction apparatus, data correction method, magnetic resonance imaging apparatus and x-ray apparatus
EP2219023A3 (en) Wideband magnetic resonance imaging apparatus and method
CN101051074A (zh) 磁共振成像装置和磁共振成像方法
WO2009072619A1 (ja) 磁気共鳴イメージング装置および磁気共鳴イメージング方法
WO2013057629A3 (en) Mr imaging using shared information among images with different contrast
JP2008272479A5 (ja)
US20110181280A1 (en) Method and system for echo planar imaging
JP2016022302A (ja) 磁気共鳴信号処理方法、磁気共鳴信号処理装置及び磁気共鳴装置並びにプログラム
Lingala et al. Feasibility of through‐time spiral generalized autocalibrating partial parallel acquisition for low latency accelerated real‐time MRI of speech
CN103543421A (zh) 用于减少磁共振图像中的运动伪影的方法以及磁共振设备
WO2008139925A1 (ja) 磁気共鳴イメージング装置
WO2007113759A3 (en) Spectroscopic magnetic resonance imaging
US10527700B2 (en) Multiband, multishot magnetic resonance elastography
CN115345953A (zh) 一种dwi-epi图像奈奎斯特重影校正方法
JP2006507071A5 (ja)
Yushchenko et al. Fast acquisition of propagating waves in humans with low-field MRI: Toward accessible MR elastography
US20170248668A1 (en) Magnetic resonance magnification imaging

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08752221

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 12599534

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08752221

Country of ref document: EP

Kind code of ref document: A1