JP2007083029A - セグメント分割マルチショット放射方向ファンビーム・エンコード順序でmrデータを収集するための方法及び装置 - Google Patents
セグメント分割マルチショット放射方向ファンビーム・エンコード順序でmrデータを収集するための方法及び装置 Download PDFInfo
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Abstract
【解決手段】偏向磁場を印加するようにマグネット(54)のボアの周りに位置決めした複数の傾斜コイル(50)を含むMRイメージング装置(10)を提供する。RF送受信器システム及びRFスイッチ(62)が、MR画像を収集するためにRFコイル・アセンブリ(56)に対してRF信号を送受信するようにパルスモジュール(58)によって制御を受けている。MRイメージング装置(10)はさらに、3D撮像シーケンスを適用しセグメント分割収集を用いてMRデータを収集する(86)ようにプログラムされたコンピュータ(20)を含む。このコンピュータ(86)はさらに、MRデータからうず電流誘導性アーチファクトが実質的に存在しない画像を再構成する(86)ようにプログラムされている。
【選択図】図2
Description
12 オペレータ・コンソール
13 キーボードその他の入力デバイス
14 制御パネル
16 表示スクリーン
18 リンク
20 単独のコンピュータ・システム
20a バックプレーン
22 画像プロセッサ・モジュール
24 CPUモジュール
26 メモリモジュール
28 ディスク記憶装置
30 テープ駆動装置
32 単独のシステム制御器
32a バックプレーン
34 高速シリアルリンク
36 CPUモジュール
38 パルス発生器モジュール
40 シリアルリンク
42 傾斜増幅器の組
44 生理学的収集制御器
46 スキャン室インタフェース回路
48 患者位置決めシステム
50 傾斜コイル・アセンブリ
52 マグネット・アセンブリ
54 偏向マグネット
56 全身用RFコイル
58 送受信器モジュール
60 RF増幅器
62 送信/受信スイッチ
64 前置増幅器
66 メモリモジュール
68 アレイプロセッサ
70 方法
72 方法の開始
74 エンコード・ステップ数を決定する
76 すべてのエンコード・ステップに関する極角を計算する
78 極角に基づいてエンコード・ステップをソートする
80 極角に基づいてエンコード・ステップを所望のサイズのブレードになるようにグループ分けする
82 各ブレードの各エンコード・ステップのk空間中心からのユークリッド距離を決定する
84 ブレードごとのエンコード・ステップをユークリッド距離に基づいてソートする
86 MRIデータを収集し画像を再構成する
88 方法の終了
90 例示的な放射方向ファンビーム・セグメント分割
92 セグメントすなわちk空間ブレード
94 中心
Claims (10)
- 偏向磁場を印加するようにマグネット(54)のボアの周りに位置決めした複数の傾斜コイル(50)と、MR画像を収集するためにRFコイル・アセンブリ(56)にRF信号を送信するようにパルスモジュール(58)によって制御を受けるRF送受信器システム及びRFスイッチ(62)と、
コンピュータ・プログラムをその上に保存して有するコンピュータ読み取り可能記憶媒体であって、コンピュータ(20)によって実行した際に該コンピュータ(20)に対して、
MRデータ収集のための3D撮像シーケンスを適用すること、
セグメント分割した収集を用いてMRデータを収集すること(86)、並びに
MRデータからうず電流誘導性アーチファクトが実質的に存在しない画像を再構成すること(86)、
を行わせる命令を含んだコンピュータ読み取り可能記憶媒体と、
を備えるMRイメージング装置。 - 前記コンピュータ(20)はさらに、その各々がk空間中心(94)から延びている一連の放射方向ファンビーム(92)においてMRデータを収集する(86)ようにプログラムされている、請求項1に記載のMRイメージング装置。
- 前記コンピュータ(20)はさらに、各エンコード位置のk空間中心からのそれぞれの距離(82)に基づいて放射方向ファンビームのエンコード位置に対するMRデータを収集する(86)ようにプログラムされている、請求項2に記載のMRイメージング装置。
- 前記コンピュータ(20)はさらに、
k空間の各エンコード位置に関する極角を計算すること(76)、
エンコード位置を前記極角に基づいて昇順と降順の一方によりソートすること(78)、
前記エンコード位置を所望のサイズの放射方向ファンブレードにグループ分けすること(80)、並びに
各放射方向ファンブレードのエンコード位置を各エンコード位置のk空間中心からの距離に基づいて昇順で配列させること(84)、
を行うようにプログラムされている、請求項3に記載のMRイメージング装置。 - 前記コンピュータ(20)はさらに、放射方向ファンブレードの各エンコード位置のk空間中心からのユークリッド距離を決定する(82)ようにプログラムされている、請求項4に記載のMRイメージング装置。
- 前記コンピュータ(20)はさらに、セグメント分割セントリック放射方向ファンビーム収集でMRデータを収集する(86)ようにプログラムされている、請求項1に記載のMRイメージング装置。
- 前記コンピュータ(20)はさらに、セグメント分割逆セントリック放射方向ファンビーム収集でMRデータを収集する(86)ようにプログラムされている、請求項1に記載のMRイメージング装置。
- 前記コンピュータ(20)はさらに、各放射方向ファンビームに対するMRデータをシーケンシャル、ランダム、あるいはインターリーブ順序のうちの1つにより収集する(86)ようにプログラムされている、請求項2に記載のMRイメージング装置。
- 前記コンピュータ(20)はさらに、3Dカルテシアン・サンプリング収集によってMRデータを収集する(86)ようにプログラムされている、請求項1に記載のMRイメージング装置。
- 前記3Dカルテシアン・サンプリング収集が、3D GRE、SPGR、SSFP、b−SSFP、EPI及びFSE収集のうちの1つである、請求項9に記載のMRイメージング装置。
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US11/162,621 US7265547B2 (en) | 2005-09-16 | 2005-09-16 | Method and apparatus for acquiring MR data with a segmented multi-shot radial fan beam encoding order |
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CN108261201B (zh) * | 2018-01-27 | 2021-07-02 | 王天红 | 一种快速自导航磁共振水成像装置 |
WO2021081309A2 (en) * | 2019-10-25 | 2021-04-29 | Hyperfine Research, Inc. | Artefact reduction in magnetic resonance imaging |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004344183A (ja) * | 2003-04-24 | 2004-12-09 | Hitachi Medical Corp | 磁気共鳴イメージング装置 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4769603A (en) | 1985-08-19 | 1988-09-06 | Siemens Aktiengesellschaft | Method for the operation of a nuclear magnetic resonance apparatus |
AU7484694A (en) * | 1993-08-13 | 1995-03-14 | Government Of The United States Of America, As Represented By The Secretary Of The Department Of Health And Human Services, The | Method for magnetic resonance spectroscopic imaging with multiple spin-echoes |
US5532595A (en) * | 1994-04-18 | 1996-07-02 | Picker International, Inc. | Three-dimensional spiral echo volume imaging |
WO2000072036A1 (en) * | 1999-05-20 | 2000-11-30 | Koninklijke Philips Electronics N.V. | Magnetic resonance imaging method with sub-sampling |
US6671536B2 (en) * | 2001-09-25 | 2003-12-30 | Wisconsin Alumni Research Foundation | Magnetic resonance angiography using floating table projection imaging |
DE10201063B4 (de) * | 2002-01-14 | 2005-06-02 | Siemens Ag | Gerät und Verfahren, sowie Computersoftware-Produkt zur PPA-Magnetresonanzbildgebung |
US6794867B1 (en) * | 2003-06-13 | 2004-09-21 | Wisconsin Alumni Research Foundation | Isotropic imaging of vessels with fat suppression |
US7974679B2 (en) * | 2003-06-27 | 2011-07-05 | General Electric Company | Method and apparatus to reduce image intensity variation during MR data acquisition |
US6882148B2 (en) * | 2003-07-09 | 2005-04-19 | Catholic Healthcare West | Split-blade data collection for propeller MRI |
DE10337932B4 (de) * | 2003-08-18 | 2009-02-05 | Siemens Ag | Gerät und Verfahren zur Minimierung von Streifenartefakten bei radialer oder spiralförmiger k-Raum-Abtastung in der Magnetresonanzbildgebung |
EP1664822A1 (en) * | 2003-09-08 | 2006-06-07 | Koninklijke Philips Electronics N.V. | Randomized ordered k-space sub-sets with shared pre-pulses in mri |
US7046004B2 (en) * | 2004-05-07 | 2006-05-16 | University Of Basel | Generic eddy-current compensation in magnetic resonance imaging |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008136734A (ja) * | 2006-12-04 | 2008-06-19 | Toshiba Corp | 磁気共鳴信号収集シーケンスおよび磁気共鳴イメージング装置 |
WO2010116772A1 (ja) * | 2009-04-10 | 2010-10-14 | 株式会社 日立メディコ | 磁気共鳴イメージング装置 |
JP2011072536A (ja) * | 2009-09-30 | 2011-04-14 | Ge Medical Systems Global Technology Co Llc | 磁気共鳴イメージング装置 |
JP5858791B2 (ja) * | 2010-01-22 | 2016-02-10 | 株式会社日立メディコ | 磁気共鳴イメージング装置及び血管画像撮像方法 |
JP2015123232A (ja) * | 2013-12-26 | 2015-07-06 | 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 | 磁気共鳴装置 |
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US20070063701A1 (en) | 2007-03-22 |
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