JP4951264B2 - シェルk空間サンプリング軌跡を使用したアンダーサンプリング3DMRI - Google Patents
シェルk空間サンプリング軌跡を使用したアンダーサンプリング3DMRI Download PDFInfo
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- JP4951264B2 JP4951264B2 JP2006109662A JP2006109662A JP4951264B2 JP 4951264 B2 JP4951264 B2 JP 4951264B2 JP 2006109662 A JP2006109662 A JP 2006109662A JP 2006109662 A JP2006109662 A JP 2006109662A JP 4951264 B2 JP4951264 B2 JP 4951264B2
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- 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
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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
- G01R33/565—Correction of image distortions, e.g. due to magnetic field inhomogeneities
- G01R33/56509—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to motion, displacement or flow, e.g. gradient moment nulling
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Description
Claims (5)
- 半径の異なる一連の実質的に球形のシェルとしてk空間をサンプリングする磁気共鳴撮影(MRI)システムを使用して、スキャン中にk空間をサンプリングする方法であって、その改良が、
a)ヘリカルスパイラルサンプリング軌跡で各シェルをサンプリングすること、
b)同じシェルにおいて複数のヘリカルスパイラルサンプリング軌跡を準備すること、及び
c)半径の大きなシェルにおいて、同じシェル内の選択されたヘリカルスパイラルサンプリング軌跡でのk空間サンプルの取得をスキップすることにより前記半径の大きなシェルをアンダーサンプリングすること
を含むことを特徴とする方法。 - シェル半径の関数としての前記アンダーサンプリング量が、単調減少関数により求められることを特徴とする請求項1に記載の方法。
- 前記単調減少関数がカイザー窓であることを特徴とする請求項2に記載の方法。
- ステップc)が、前記アンダーサンプリング量を選択することを含むことを特徴とする請求項1に記載の方法。
- シェルが、前記取得されるシェルの前記k空間半径が時間に伴って漸進的に増大するセントリックオーダでステップa)において取得されることを特徴とする請求項1に記載の方法。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US67058805P | 2005-04-12 | 2005-04-12 | |
US60/670588 | 2005-04-12 | ||
US11/341242 | 2006-01-27 | ||
US11/341,242 US7245124B2 (en) | 2005-04-12 | 2006-01-27 | Under-sampled 3D MRI using a shells k-space sampling trajectory |
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JP2006289097A JP2006289097A (ja) | 2006-10-26 |
JP4951264B2 true JP4951264B2 (ja) | 2012-06-13 |
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US (1) | US7245124B2 (ja) |
EP (1) | EP1712927A3 (ja) |
JP (1) | JP4951264B2 (ja) |
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JP4273138B2 (ja) * | 2006-06-30 | 2009-06-03 | 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 | 磁気共鳴撮像装置及び磁気共鳴受信装置 |
US8442353B2 (en) * | 2006-08-03 | 2013-05-14 | The Regents Of The University Of California | Incorporation of mathematical constraints in methods for dose reduction and image enhancement in tomography |
US7777485B2 (en) * | 2006-08-15 | 2010-08-17 | General Electric Company | Method for multiplexed MR tracking |
DE102006042998B4 (de) * | 2006-09-13 | 2008-07-03 | Siemens Ag | Messsequenz für die dreidimensionale MR-Bildgebung sowie MR-Gerät |
US8532742B2 (en) * | 2006-11-15 | 2013-09-10 | Wisconsin Alumni Research Foundation | System and method for simultaneous 3DPR device tracking and imaging under MR-guidance for therapeutic endovascular interventions |
DE602007002693D1 (de) * | 2007-02-09 | 2009-11-19 | Agfa Gevaert | Visuelle Hervorhebung von Intervalländerungen mittels einer Zeitsubtraktionstechnik |
JP2010526636A (ja) * | 2007-05-16 | 2010-08-05 | イェダ リサーチ アンド デベロップメント カンパニー リミテッド | 血液脳関門破壊の評価 |
US7860291B2 (en) * | 2007-06-12 | 2010-12-28 | General Electric Co. | Method and apparatus for correcting motion in multi-shot diffusion-weighted magnetic resonance imaging |
US7692423B2 (en) * | 2007-10-08 | 2010-04-06 | The Board Of Trustees Of The Leland Stanford Junior University | Self navigating cartesian trajectory |
US20100145185A1 (en) * | 2008-12-04 | 2010-06-10 | Xiaole Hong | Extending the resolution of mri data by combining subsets from plural image acquisitions |
US8463355B2 (en) * | 2009-06-09 | 2013-06-11 | Siemens Medical Solutions Usa, Inc. | Apparatus to enable display of real-time graphical or numeric information within an MR image |
DE102009050662B4 (de) * | 2009-10-26 | 2012-09-27 | Siemens Aktiengesellschaft | Radiale MR-Datenerfassung in einem dreidimensionalen K-Raum mit einer Anordnung der Speichen gemäß einer Spiral-Phyllotaxis |
US8396267B2 (en) * | 2009-11-04 | 2013-03-12 | International Business Machines Corporation | Correcting subject motion in multiple resolutions in magnetic resonance imaging |
JP5717839B2 (ja) * | 2010-03-23 | 2015-05-13 | マックス プランク ゲゼルシャフト ツゥアー フェデルゥン デル ヴィッセンシャフテン エー フォー | 正規化非線形逆再構成法を用いて磁気共鳴画像シーケンスを再構成するための方法及び装置 |
US8970217B1 (en) | 2010-04-14 | 2015-03-03 | Hypres, Inc. | System and method for noise reduction in magnetic resonance imaging |
RU2014119867A (ru) * | 2011-10-18 | 2015-11-27 | Конинклейке Филипс Н.В. | Магнитно-резонансная (mr) томография с использованием общей информации для изображений с разной контрастностью |
EP2768386B1 (en) | 2011-10-19 | 2024-04-03 | Tel HaShomer Medical Research Infrastructure and Services Ltd. | Magnetic resonance maps for analyzing tissue |
JP5875425B2 (ja) * | 2012-03-21 | 2016-03-02 | 日本メジフィジックス株式会社 | 測定精度評価装置 |
US20130342567A1 (en) * | 2012-06-21 | 2013-12-26 | Nokia Corporation | Method, apparatus and computer program product for processing of multimedia content |
EP2988668B1 (en) * | 2013-04-24 | 2019-07-24 | Tel HaShomer Medical Research Infrastructure and Services Ltd. | Magnetic resonance maps for analyzing tissue |
US9788761B2 (en) * | 2014-02-27 | 2017-10-17 | Toshiba Medical Systems Corporation | Motion correction for magnetic resonance angiography (MRA) with 3D radial acquisitions |
US9594144B2 (en) * | 2014-04-23 | 2017-03-14 | General Electric Company | Low-noise magnetic resonance imaging using low harmonic pulse sequences |
DE102015218106B4 (de) * | 2015-09-21 | 2017-05-11 | Siemens Healthcare Gmbh | Verfahren zu einer Bewegungskorrektur von Magnetresonanz-Messdaten |
US10849561B2 (en) * | 2015-10-21 | 2020-12-01 | University Of Virginia Patent Foundation | Systems and methods for reducing respiratory-induced motion artifacts for accelerated imaging |
US11079455B2 (en) * | 2016-04-20 | 2021-08-03 | Oxford University Innovation Limited | Combined angiography and perfusion using radial imaging and arterial spin labeling |
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-
2006
- 2006-01-27 US US11/341,242 patent/US7245124B2/en active Active
- 2006-04-06 EP EP06007319A patent/EP1712927A3/en not_active Withdrawn
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US7245124B2 (en) | 2007-07-17 |
JP2006289097A (ja) | 2006-10-26 |
EP1712927A3 (en) | 2007-01-10 |
EP1712927A2 (en) | 2006-10-18 |
US20060226836A1 (en) | 2006-10-12 |
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