JP4316888B2 - Smashを用いた合成平均化 - Google Patents
Smashを用いた合成平均化 Download PDFInfo
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- JP4316888B2 JP4316888B2 JP2002584001A JP2002584001A JP4316888B2 JP 4316888 B2 JP4316888 B2 JP 4316888B2 JP 2002584001 A JP2002584001 A JP 2002584001A JP 2002584001 A JP2002584001 A JP 2002584001A JP 4316888 B2 JP4316888 B2 JP 4316888B2
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- magnetic resonance
- imaging apparatus
- resonance imaging
- signal
- data
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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
-
- 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
- G01R33/561—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
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- 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)
Description
Claims (7)
- 対象となる領域において磁気共鳴(MR)活性原子核を励起する手段;
対象となる領域から第1の受信信号のセットを受信するための少なくとも2つのr.f.受信コイルのアレイ;
励起されたMR活性原子核を空間的にエンコードするために位相エンコード方向において磁界勾配のセットを生成する手段;並びに
各々のセットが前記第1の受信信号のセットの非常に間隔をおいたk空間のラインに対応する信号を有するように少なくとも2つのセットに分割することにより及び各々のセットから画像領域の完全な表示を再生するように前記コイルから複数の信号を用いることにより前記第1の受信信号のセットを処理する手段;
を有することを特徴とする磁気共鳴イメージング装置。 - 請求項1に記載の磁気共鳴イメージング装置であって、前記処理手段は前記画像化領域の前記再生された完全な表示を比較するように備えられている、ことを特徴とする磁気共鳴イメージング装置。
- 請求項2に記載の磁気共鳴イメージング装置であって、前記処理手段は一の表示から他の表示を減じるように備えられている、ことを特徴とする磁気共鳴イメージング装置。
- 請求項2に記載の磁気共鳴イメージング装置であって、前記処理手段は、スプリアス信号が収集された位相エンコード勾配において前記信号を回復させるように何れのスプリアスデータの除外の後、前記受信信号を再処理するように備えられている、ことを特徴とする磁気共鳴イメージング装置。
- 請求項1に記載の磁気共鳴イメージング装置であって、前記処理手段は画像空間において前記完全な表示を再生するように備えられている、ことを特徴とする磁気共鳴イメージング装置。
- 請求項1に記載の磁気共鳴イメージング装置であって、前記処理手段は空間周波数ドメインにおいて前記完全な表示を再生するように備えられている、ことを特徴とする磁気共鳴イメージング装置。
- 対象となる領域において磁気共鳴(MR)活性原子核の励起用に磁界を生成する段階;
対象となる領域から第1の受信信号のセットを少なくとも2つのr.f.受信コイルのアレイが受信する段階;
励起されたMR活性原子核の空間的なエンコード用に位相エンコード方向において磁界勾配のセットを生成する段階;並びに
各々のセットが前記第1の受信信号のセットのk空間のラインに対して増加したk空間のラインの間隔に対応する信号を有するように少なくとも2つのセットに分割されることにより及び各々のセットから画像信号の完全な表示を再生するように前記コイルから複数の信号を用いることにより前記第1の受信信号のセットを処理する段階;
を有することを特徴とする磁気共鳴イメージング装置の作動方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0109789A GB2374672A (en) | 2001-04-20 | 2001-04-20 | Magnetic Resonance Imaging |
PCT/US2002/012286 WO2002086525A2 (en) | 2001-04-20 | 2002-04-19 | Synthesised averaging using smash for elimination of motion artifacts |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004528099A JP2004528099A (ja) | 2004-09-16 |
JP4316888B2 true JP4316888B2 (ja) | 2009-08-19 |
Family
ID=9913188
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002584001A Expired - Fee Related JP4316888B2 (ja) | 2001-04-20 | 2002-04-19 | Smashを用いた合成平均化 |
Country Status (4)
Country | Link |
---|---|
US (1) | US6900631B2 (ja) |
JP (1) | JP4316888B2 (ja) |
GB (1) | GB2374672A (ja) |
WO (1) | WO2002086525A2 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10318682B4 (de) * | 2003-04-24 | 2011-12-29 | Peter M. Jakob | Beschleunigte Magnet-Resonanz-Bildgebung im Rahmen der parallelen Akquisition von MRT-Daten |
US7309984B2 (en) | 2005-10-27 | 2007-12-18 | Wisconsin Alumni Research Foundation | Parallel magnetic resonance imaging method using a radial acquisition trajectory |
US8155389B2 (en) * | 2007-10-02 | 2012-04-10 | The University Of Utah Research Foundation | Method and system for motion correction in imaging systems |
US8934691B2 (en) * | 2011-04-06 | 2015-01-13 | Siemens Medical Solutions Usa, Inc. | System for motion compensated MR parallel imaging |
CN107850652B (zh) * | 2015-07-15 | 2021-10-15 | 皇家飞利浦有限公司 | 具有运动检测的mr成像 |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US50004A (en) * | 1865-09-19 | Improvement in fog-alarms | ||
US4443760A (en) * | 1982-07-01 | 1984-04-17 | General Electric Company | Use of phase alternated RF pulses to eliminate effects of spurious free induction decay caused by imperfect 180 degree RF pulses in NMR imaging |
US4612504A (en) * | 1984-11-21 | 1986-09-16 | General Electric Company | Method for removing the effects of baseline error components in NMR imaging applications |
US4777438A (en) * | 1987-04-27 | 1988-10-11 | Picker International, Inc. | Multiple imaging with improved signal-to-noise ratio |
US4885542A (en) * | 1988-04-14 | 1989-12-05 | The Regents Of The University Of California | MRI compensated for spurious NMR frequency/phase shifts caused by spurious changes in magnetic fields during NMR data measurement processes |
US5109854A (en) * | 1990-02-23 | 1992-05-05 | Picker International, Inc. | Roll-over aliasing suppression in undersampled images |
US5086275A (en) * | 1990-08-20 | 1992-02-04 | General Electric Company | Time domain filtering for nmr phased array imaging |
US5179332A (en) * | 1991-08-16 | 1993-01-12 | General Electric Company | NMR radio frequency coil with disable circuit |
US5910728A (en) * | 1996-11-12 | 1999-06-08 | Beth Israel Deaconess Medical Center | Simultaneous acquisition of spatial harmonics (SMASH): ultra-fast imaging with radiofrequency coil arrays |
JP3198967B2 (ja) * | 1997-02-28 | 2001-08-13 | 株式会社島津製作所 | Mrイメージング装置 |
US6289232B1 (en) * | 1998-03-30 | 2001-09-11 | Beth Israel Deaconess Medical Center, Inc. | Coil array autocalibration MR imaging |
RU2216751C2 (ru) * | 1998-04-17 | 2003-11-20 | Конинклейке Филипс Электроникс Н.В. | Способ и устройство для формирования изображений магнитного резонанса |
US6144873A (en) * | 1998-04-17 | 2000-11-07 | Board Of Trustees Of The Leland Stanford Junior University | Method of efficient data encoding in dynamic magnetic resonance imaging |
JP2002519165A (ja) * | 1998-07-02 | 2002-07-02 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | スプリアスの磁気信号が原因による磁気共鳴信号における人工物を減少させる方法 |
EP1014102A3 (en) * | 1998-12-24 | 2001-10-04 | Marconi Electronic Systems Limited | Multislice magnetic resonance imaging using an array of receiving coils |
EP1101126A1 (en) * | 1999-05-20 | 2001-05-23 | Koninklijke Philips Electronics N.V. | Magnetic resonance imaging method with sub-sampling |
GB9926918D0 (en) * | 1999-11-15 | 2000-01-12 | Marconi Electronic Syst Ltd | Magnetic resonance imaging |
GB9926923D0 (en) * | 1999-11-15 | 2000-01-12 | Marconi Electronic Syst Ltd | Magnetic resonance imaging |
EP1307757B1 (en) * | 2000-07-31 | 2012-09-12 | Koninklijke Philips Electronics N.V. | Magnetic resonance imaging method with sub-sampled acquisition |
JP3875479B2 (ja) * | 2000-10-20 | 2007-01-31 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | 磁気共鳴撮影装置 |
US6556009B2 (en) * | 2000-12-11 | 2003-04-29 | The United States Of America As Represented By The Department Of Health And Human Services | Accelerated magnetic resonance imaging using a parallel spatial filter |
GB2374673A (en) * | 2001-04-20 | 2002-10-23 | Marconi Medical Systems Uk Ltd | Magnetic Resonance Imaging |
-
2001
- 2001-04-20 GB GB0109789A patent/GB2374672A/en not_active Withdrawn
-
2002
- 2002-04-19 US US10/126,177 patent/US6900631B2/en not_active Expired - Fee Related
- 2002-04-19 WO PCT/US2002/012286 patent/WO2002086525A2/en active Application Filing
- 2002-04-19 JP JP2002584001A patent/JP4316888B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO2002086525A3 (en) | 2003-03-13 |
US20030025500A1 (en) | 2003-02-06 |
GB0109789D0 (en) | 2001-06-13 |
GB2374672A (en) | 2002-10-23 |
WO2002086525A2 (en) | 2002-10-31 |
JP2004528099A (ja) | 2004-09-16 |
US6900631B2 (en) | 2005-05-31 |
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