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 PDFInfo
- 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
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- WO
- WIPO (PCT)
- Prior art keywords
- data
- hybrid data
- hybrid
- magnetic resonance
- imaging apparatus
- Prior art date
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Classifications
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- 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
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- 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
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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
- 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。
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)
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)
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)
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)
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 |
-
2007
- 2007-05-11 JP JP2007126549A patent/JP5105586B2/ja not_active Expired - Fee Related
-
2008
- 2008-04-28 US US12/599,534 patent/US8339136B2/en active Active
- 2008-04-28 WO PCT/JP2008/058211 patent/WO2008139925A1/ja active Application Filing
Patent Citations (1)
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)
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 |
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