JP2005185853A - ゲート化され時間解像されたコントラスト増幅3次元mr血管造影法 - Google Patents
ゲート化され時間解像されたコントラスト増幅3次元mr血管造影法 Download PDFInfo
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Abstract
【解決手段】非選択的RF励起パルスを使用する3Dファスト勾配−リコール・エコー・パルス・シーケンスを使用して被験者の動的MRA調査が行なわれる。再構築された画像のシリーズのフレームレートはkスペースの周縁領域より高い速度でkスペースの中央領域をサンプリングすることで増加される。その取得内容は心臓トリガー信号を使用してゲート化処理され、kスペースの中央領域は心臓拡張中に取得され、kスペースの周縁領域は心臓収縮中に取得される。画像フレームは周縁kスペース領域からの時間的に最も近いサンプルを使用して中央kスペース領域の各サンプリングにおいて再構築される。画像フレームの2つの画像フレームを減算してMR血管造影を形成する。
【選択図】図6
Description
Claims (7)
- 被験者からNMRデータを取得して、選択されたkスペースから、被験者の動的調査中に、サンプルを繰り返し取得することにより一連のフレーム画像を形成する装置であって、
前記被験者の心拍サイクルを示す信号を発生させ、各心拍サイクルにおいて心臓収縮取得ウインドウと心臓拡張取得ウインドウとを定める手段と、
複数の心拍サイクルを通して前記選択されたkスペースの中央領域をある選択された時間速度で繰り返しサンプリングし、前記の中央領域のサンプリングが前記心臓拡張取得ウインドウ中に実行される手段と、
複数の心拍サイクルを通して前記選択されたkスペースの周縁領域をより低い時間速度で繰り返しサンプリングし、前記の周縁領域のサンプリングが前記心臓収縮取得ウインドウ中に実行される手段と、
前記中央領域kスペース・サンプルと前記周縁kスペース領域の時間的に隣接するサンプリングから得られたサンプルとを含む中央領域kスペース・サンプルの各セットのデータ・セットを形成する手段と、
前記データ・セットからフレーム画像を再構築する手段
を含んでなる装置。 - 前記NMRデータは被験者の3次元領域から取得する請求項1記載の装置。
- 前記フレーム画像が3次元フレーム画像である請求項2記載の装置。
- 前記3次元フレーム画像を投影することにより2次元画像を形成する請求項3記載の装置。
- 複数個の3次元フレーム画像が前記形成されたデータ・セットから再構築され、かつ、別の3次元画像が前記3次元フレーム画像の1つを前記3次元フレーム画像の他の1つから減算することにより形成される請求項3記載の装置。
- 前記別の3次元画像を投影することにより2次元画像を形成する請求項5記載の装置。
- 前記選択されたkスペースの前記中央領域がサブ領域に分割され、前記サブ領域の少なくとも1つが各連続する心拍サイクルの前記心臓拡張取得ウインドウ中でサンプリングされる請求項1記載の装置。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/787,181 US5830143A (en) | 1997-01-21 | 1997-01-21 | Gated time-resolved contrast-enhanced 3D MR angiography |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP53430798A Division JP3742114B2 (ja) | 1997-01-21 | 1997-07-22 | ゲート化され時間解像されたコントラスト増幅3次元mr血管造影法 |
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JP2005185853A true JP2005185853A (ja) | 2005-07-14 |
JP4167233B2 JP4167233B2 (ja) | 2008-10-15 |
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Application Number | Title | Priority Date | Filing Date |
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JP2005029307A Expired - Lifetime JP4167233B2 (ja) | 1997-01-21 | 2005-02-04 | ゲート化され時間解像されたコントラスト増幅3次元mr血管造影法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US5830143A (ja) |
EP (1) | EP1010016B1 (ja) |
JP (1) | JP4167233B2 (ja) |
AT (1) | ATE316248T1 (ja) |
AU (1) | AU3888397A (ja) |
DE (1) | DE69735138T2 (ja) |
IL (1) | IL130991A (ja) |
WO (1) | WO1998032026A1 (ja) |
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CN103282790A (zh) * | 2010-12-21 | 2013-09-04 | 皇家飞利浦电子股份有限公司 | 快速双对比度mr成像 |
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DE102022208726A1 (de) | 2022-08-23 | 2024-02-29 | Siemens Healthcare Gmbh | Computerimplementiertes Verfahren zum Betrieb einer medizinischen Bildgebungseinrichtung, Bildgebungseinrichtung, Computerprogramm und elektronisch lesbarer Datenträger |
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JPH02140145A (ja) * | 1988-11-21 | 1990-05-29 | Toshiba Corp | 磁気共鳴イメージング装置 |
US5125407A (en) * | 1990-02-23 | 1992-06-30 | Baylor Research Foundation | Method for magnetic resonance imaging of an object |
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US5417213A (en) * | 1993-06-07 | 1995-05-23 | Prince; Martin R. | Magnetic resonance arteriography with dynamic intravenous contrast agents |
US5435303A (en) * | 1993-08-04 | 1995-07-25 | General Electric Company | MRA image produced by temporal flow data sharing |
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DE4327325C1 (de) * | 1993-08-13 | 1995-01-12 | Siemens Ag | Verfahren zur zeitaufgelösten MR-Bildgebung |
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JPH10502858A (ja) * | 1995-05-02 | 1998-03-17 | フィリップス エレクトロニクス エヌ ベー | 対象の磁気共鳴画像化方法及び装置 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2003518967A (ja) * | 1999-12-24 | 2003-06-17 | フォルシュングスツェントルム・ユーリッヒ・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング | 画像処理方法 |
CN103282790A (zh) * | 2010-12-21 | 2013-09-04 | 皇家飞利浦电子股份有限公司 | 快速双对比度mr成像 |
Also Published As
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DE69735138D1 (de) | 2006-04-06 |
EP1010016A1 (en) | 2000-06-21 |
DE69735138T2 (de) | 2006-08-17 |
AU3888397A (en) | 1998-08-07 |
US5830143A (en) | 1998-11-03 |
IL130991A (en) | 2002-12-01 |
IL130991A0 (en) | 2001-01-28 |
EP1010016B1 (en) | 2006-01-18 |
JP4167233B2 (ja) | 2008-10-15 |
WO1998032026A1 (en) | 1998-07-23 |
ATE316248T1 (de) | 2006-02-15 |
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