JP2019508156A - 動く対象の磁化率マッピング - Google Patents
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Abstract
Description
Claims (15)
- 磁気共鳴イメージングシステムであって、
動く対象からデータを取得するための磁気共鳴イメージング装置であって、前記対象は、胎児又は胎児の一部のようなそれ自身で動いている、磁気共鳴イメージング装置と、
前記動く対象の画像を生成する画像生成器と、
を有し、
前記磁気共鳴イメージング装置は、前記対象の自然な動きを利用して、磁化方向B0に対する前記対象の個々の異なる向きにおいて前記対象からデータを取得するように構成され、
前記画像生成器は、
個々のデータ取得中、前記対象の位置及び/又は向きを決定し、前記対象の前記自然な動きを利用して、欠けているデータを完成し;
前記個々の異なる向きについて、前記取得されたデータから位相画像を再構成し;
再構成された位相画像に基づいて磁化率マップを生成する処理であって、複数の向きのサンプリングを使用して磁化率を計算するアプローチ又は前記対象の個々の異なる位置及び/又は向きを使用する任意の他のアプローチに従って計算を実施して、前記対象の決定された位置及び/又は向きを使用して、定量的磁化率マッピングの逆問題の不良設定性を解消する、処理を行う、
磁気共鳴イメージングシステム。 - 前記画像生成器は、前記対象が予め決められた厚さの液体及び/又は固体の物質によって完全に包囲されているかどうか決定する、請求項1に記載の磁気共鳴イメージングシステム。
- 前記画像生成器は、前記対象の期待される平均磁化率と包囲する物質の期待される平均磁化率との間の磁化率の差が予め決められた最大の磁化率差を下回るかどうか決定する、請求項2に記載の磁気共鳴イメージングシステム。
- 前記画像生成器は、前記取得されたデータから位相画像を再構成する際、前記対象の局所的磁化率ソースに関連しない位相コンポーネントを除去するためにバックグラウンドフィールド除去を実施する、請求項1乃至3のいずれか1項に記載の磁気共鳴イメージングシステム。
- 前記対象が前記予め決められた厚さの物質によって完全に包囲されていると前記画像生成器が決定する場合、前記画像生成器は、バックグラウンドフィールド除去の努力を低減し、又はバックグラウンドフィールド除去をスキップする、請求項4に記載の磁気共鳴イメージングシステム。
- 前記バックグラウンドフィールド除去は球面調和関数に基づく、請求項4又は5に記載のシステム。
- 前記画像生成器は、前記動く対象の位置及び/又は向きを決定するためにナビゲータ又は他の標準磁気共鳴動き検出技法を使用する、請求項1乃至6のいずれか1項に記載のシステム。
- 動く対象の磁気共鳴イメージング方法であって、前記対象は、胎児のようなそれ自身動くものであり、前記方法が、
磁気共鳴イメージング装置を使用して前記対象からデータを取得するステップであって、前記データは、前記対象の自然な動きを利用して、磁化方向B0に対する前記対象の個々の異なる位置において取得される、ステップと、
個々のデータ取得中、前記対象の前記位置及び/又は向きを決定し、前記対象の自然な動きを利用して、欠けているデータを完成させるステップと、
前記取得されたデータから位相画像を再構成するステップと、
前記再構成された位相画像に基づいて磁化率マップを生成するステップであって、前記対象の決定される位置及び/又は向きは、「複数の向きのサンプリングを使用する磁化率計算」アプローチ又は任意の他のアプローチに従う計算を実施するために使用され、前記対象の個々の異なる位置及び/又は向きを使用して、定量的磁化率マッピングの逆問題の不良設定性を解消する、ステップと、
を有する方法。 - 前記決定するステップは更に、前記対象が予め決められた厚さの液体及び/又は固体の物質によって完全に包囲されているかどうか決定することを含む、請求項8に記載の方法。
- 前記決定するステップは更に、前記対象の期待される平均磁化率と包囲する物質の期待される平均磁化率との間の磁化率差が予め決められた最大磁化率差を下回るかどうか決定することを含む、請求項8又は9に記載の方法。
- 前記再構成するステップは、前記対象の局所的磁化率ソースに関連しない位相コンポーネントを除去するためのバックグラウンドフィールド除去を含む、請求項8乃至10のいずれか1項に記載の方法。
- 前記対象が予め決められた厚さの液体及び/又は固体の物質によって完全に包囲されていると前記画像生成器が決定した場合、前記バックグラウンドフィールド除去の努力が低減され、又は前記バックグラウンドフィールド除去がスキップされる、請求項11に記載の方法。
- 前記バックグラウンドフィールド除去が球面調和関数に基づく、請求項11又は12に記載の方法。
- ナビゲータ又は別の標準のMR動き検出技法が、前記動く対象の位置及び/又は向きを決定するために使用される、請求項8乃至13のいずれか1項に記載の方法。
- 請求項8乃至14の何れか1項に記載の方法のステップをコンピュータに実行させるコンピュータプログラム。
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EP16160198.4 | 2016-03-14 | ||
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PCT/EP2017/055884 WO2017157872A1 (en) | 2016-03-14 | 2017-03-14 | Susceptibility mapping of a moving subject |
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EP (1) | EP3430418B1 (ja) |
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EP3749973A4 (en) * | 2018-02-07 | 2021-11-03 | The Medical College of Wisconsin, Inc. | MULTI-RESOLUTION QUANTITATIVE SUSCEPTIBILITY MAPPING WITH MAGNETIC RESONANCE IMAGING |
WO2021222082A1 (en) * | 2020-04-27 | 2021-11-04 | Children's Medical Center Corporation | Fetal cardiac mri using self-gating with a cartesian k-space trajectory |
US11360179B2 (en) | 2020-10-29 | 2022-06-14 | The Mitre Corporation | Systems and methods for estimating magnetic susceptibility through continuous motion in an MRI scanner |
CN112505598B (zh) * | 2020-12-10 | 2022-01-07 | 上海交通大学 | 定量磁化率成像重建方法及系统、存储介质及终端 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090066333A1 (en) * | 2007-09-12 | 2009-03-12 | Hitachi, Ltd. | NMR Sample Tube |
US20120321162A1 (en) * | 2011-06-15 | 2012-12-20 | Chunlei Liu | Systems and methods for imaging and quantifying tissue magnetism with magnetic resonance imaging |
WO2014057716A1 (ja) * | 2012-10-10 | 2014-04-17 | 株式会社日立製作所 | 磁気共鳴イメージング装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10056874C2 (de) | 2000-11-16 | 2003-02-06 | Siemens Ag | Verfahren zum Betrieb eines Magnetresonanzgeräts, bei dem Lageveränderungen mittels orbitaler Navigatorechos erfasst werden |
US20080042647A1 (en) * | 2004-11-30 | 2008-02-21 | Hamano Life Science Research Foundation | Magnetic Resonance Imaging Method and Magnetic Resonance Imaging Apparatus |
US8744154B2 (en) | 2005-09-29 | 2014-06-03 | Koninklijke Philips N.V. | System and method for acquiring magnetic resonance imaging (MRI) data |
US7567081B2 (en) * | 2007-05-03 | 2009-07-28 | University Of Basel | Magnetic resonance non-balanced-SSFP method for the detection and imaging of susceptibility related magnetic field distortions |
WO2009134820A2 (en) * | 2008-04-28 | 2009-11-05 | Cornell University | Tool for accurate quantification in molecular mri |
US8605969B2 (en) * | 2010-04-06 | 2013-12-10 | Siemens Corporation | Method and system for multiple object detection by sequential Monte Carlo and hierarchical detection network |
US9165386B2 (en) * | 2011-10-12 | 2015-10-20 | Hitachi, Ltd. | Magnetic resonance imaging device, and method for generating magnetic susceptibility enhanced image |
EP2900835A4 (en) * | 2012-09-27 | 2016-05-11 | Population Diagnotics Inc | METHODS AND COMPOSITIONS FOR DETECTING AND TREATING DEVELOPMENTAL DISORDERS |
WO2014059237A1 (en) * | 2012-10-13 | 2014-04-17 | Chunlei Liu | Systems and methods for susceptibility tensor imaging in the p-space |
WO2014154544A1 (en) | 2013-03-25 | 2014-10-02 | Fatnav Ekonomisk Förening | Real-time motion correction for mri using fat navigators |
US10203387B2 (en) * | 2013-06-06 | 2019-02-12 | Koninklijke Philips N.V. | MR imaging with enhanced susceptibility contrast |
AU2014348865B2 (en) * | 2013-11-14 | 2017-06-01 | Boston Scientific Neuromodulation Corporation | Systems, methods, and visualization tools for stimulation and sensing of neural systems with system-level interaction models |
KR20160054360A (ko) * | 2014-11-06 | 2016-05-16 | 삼성전자주식회사 | 영상 장치 및 영상화 방법 |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090066333A1 (en) * | 2007-09-12 | 2009-03-12 | Hitachi, Ltd. | NMR Sample Tube |
JP2009068943A (ja) * | 2007-09-12 | 2009-04-02 | Hitachi Ltd | Nmr用試料管 |
US20120321162A1 (en) * | 2011-06-15 | 2012-12-20 | Chunlei Liu | Systems and methods for imaging and quantifying tissue magnetism with magnetic resonance imaging |
WO2014057716A1 (ja) * | 2012-10-10 | 2014-04-17 | 株式会社日立製作所 | 磁気共鳴イメージング装置 |
Non-Patent Citations (2)
Title |
---|
BILIGIC BERKIN ET AL.: ""Sparse Methods for Quantitative Susceptibility Mapping"", PROC. SPIE, WAVELETS AND SPARSITY XVI, vol. 9597, JPN7021000589, 11 September 2015 (2015-09-11), pages 959711 - 1, ISSN: 0004450928 * |
TIAN LIU ET AL.: ""Calculation of Susceptibility Through Multiple Orientation Sampling(COSMOS): A Method for Condition", MAGNETIC RESONANCE IN MEDICINE, vol. 61, JPN6021006203, 2009, pages 196 - 204, ISSN: 0004450927 * |
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EP3430418B1 (en) | 2022-07-06 |
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WO2017157872A1 (en) | 2017-09-21 |
EP3430418A1 (en) | 2019-01-23 |
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