JP6697878B2 - 磁気共鳴検査システム - Google Patents
磁気共鳴検査システム Download PDFInfo
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- 230000005540 biological transmission Effects 0.000 description 4
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- 230000003321 amplification Effects 0.000 description 2
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- A—HUMAN NECESSITIES
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
- A61B5/7207—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts
- A61B5/721—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts using a separate sensor to detect motion or using motion information derived from signals other than the physiological signal to be measured
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
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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
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/30—Sample handling arrangements, e.g. sample cells, spinning mechanisms
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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
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/34046—Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils
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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
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/385—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using gradient magnetic field coils
- G01R33/3852—Gradient amplifiers; means for controlling the application of a gradient magnetic field to the sample, e.g. a gradient signal synthesizer
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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
- G01R33/543—Control of the operation of the MR system, e.g. setting of acquisition parameters prior to or during MR data acquisition, dynamic shimming, use of one or more scout images for scan plane prescription
-
- 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
- G01R33/563—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution of moving material, e.g. flow contrast angiography
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0033—Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room
- A61B5/004—Features or image-related aspects of imaging apparatus classified in A61B5/00, e.g. for MRI, optical tomography or impedance tomography apparatus; arrangements of imaging apparatus in a room adapted for image acquisition of a particular organ or body part
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- Life Sciences & Earth Sciences (AREA)
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Description
検査される対象から磁気共鳴信号を取得するRFアンテナを伴うRF手段と、
前記対象の動き情報を検出する動きセンシング手段と、
前記磁気共鳴信号から磁気共鳴画像を再構築するデータプロセッサと
を有し、前記RF手段は、前記データプロセッサに結合され、前記磁気共鳴信号を前記データプロセッサに印加し、
前記動きセンシング手段は、前記データプロセッサに結合され、検出された動き情報を前記データプロセッサに適用し、
前記動きセンシング手段には、前記RFアンテナに設けられる1つ以上のRFアンテナ運動センサ、及び、前記対象に取り付けられる1つ以上の対象運動センサが備わっている、磁気共鳴検査システムである。
上記の課題は、本発明による磁気共鳴検査システムにより達成され、磁気共鳴検査システムは、
検査される対象から磁気共鳴信号を取得するRFアンテナを伴うRF手段と、
前記対象の動き情報を検出する動きセンシング手段と、
前記磁気共鳴信号から磁気共鳴画像を再構築するデータプロセッサと
を有し、前記RF手段は、前記データプロセッサに結合され、前記磁気共鳴信号を前記データプロセッサに印加し、
前記動きセンシング手段は、前記データプロセッサに結合され、検出された動き情報を前記データプロセッサに適用し、
前記動きセンシング手段には、前記RFアンテナに設けられる1つ以上のRFアンテナ運動センサ、及び、前記対象に取り付けられる1つ以上の対象運動センサが備わっている、磁気共鳴検査システムである。
図1は本発明が使用される磁気共鳴画像診断システムを概略的に示す。磁気共鳴画像診断システムは一組のメインコイル10を含み、これにより安定した一様な(又は均一な)磁場が生成される。メインコイルは、例えば、トンネル形状の検査空間を包囲するような形態で形成される。トンネル形状の検査空間内にスライドされる(滑らかに出入りする)患者支持部の上に、検査される患者が配置される。磁気共鳴画像診断システムは、複数のグラジエントコイル11、12を含み、これにより、空間的に変化する磁場、特に個々の方向に一時的に傾斜する磁場が、一様な磁場に重ね合わせられるように生成される。グラジエントコイル11、12はグラジエントコイル21に接続され、グラジエントコイル21は1つ以上のグラジエント増幅部及び可制御電源部を含む。グラジエントコイル11、12は、電源部21による電流を印加することにより活性化され;この目的のために、電源部は、電流をグラジエントコイルに印加して適切な一時的な形状(appropriate temporal shape)のグラジエントパルス(或いは、「グラジエント波形」とも言及される)を生成するように、電子グラジエント増幅回路に適合させされている。「グラジエント」は「勾配」、「傾き」、「傾斜」等と言及されてもよい。
Claims (3)
- 磁気共鳴検査システムであって、
検査される対象から磁気共鳴信号を取得するRFアンテナを伴うRF手段と、
前記対象の動き情報を検出する動きセンシング手段と、
検出された前記動き情報に関して前記磁気共鳴信号を補正する動き補正手段と、
前記磁気共鳴信号から磁気共鳴画像を再構築するデータプロセッサと
を有し、前記RF手段は、前記データプロセッサに結合され、前記磁気共鳴信号を前記データプロセッサに印加し、
前記動きセンシング手段は、前記データプロセッサに結合され、検出された動き情報を前記データプロセッサに適用し、
前記動きセンシング手段は、前記RFアンテナに設けられ、前記RFアンテナの動きに関する情報を提供する1つ以上のRFアンテナ運動センサと、前記対象に取り付けられ、前記対象の動きに関する情報を提供する1つ以上の対象運動センサとを備え、
前記データプロセッサは、前記RFアンテナ運動センサ及び前記対象運動センサからの信号に基づいて前記RFアンテナと前記対象との間の相対的な動きを決定し、受信した前記磁気共鳴信号を、前記RFアンテナと前記対象との間の相対的な動きに基づいて補正される前記磁気共鳴画像に再構成し、
前記RFアンテナであるRF受信コイルには柔軟性のある受信要素が設けられ、前記RFアンテナ運動センサは前記柔軟性のある受信要素に一体化されている、磁気共鳴検査システム。 - 前記RFアンテナ運動センサ及び前記対象運動センサは、3つの独立した軸に関する動きを感知する集積回路装置により形成される、請求項1に記載の磁気共鳴検査システム。
- 前記RFアンテナ運動センサは前記RF受信コイルに一体化されている、請求項1に記載の磁気共鳴検査システム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261662503P | 2012-06-21 | 2012-06-21 | |
US61/662,503 | 2012-06-21 | ||
PCT/IB2013/054960 WO2013190451A1 (en) | 2012-06-21 | 2013-06-17 | Magnetic resonance examination system with motion detection |
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JP2019079221A Division JP6695474B2 (ja) | 2012-06-21 | 2019-04-18 | 磁気共鳴検査システム |
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JP2015519989A JP2015519989A (ja) | 2015-07-16 |
JP6697878B2 true JP6697878B2 (ja) | 2020-05-27 |
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JP2015517898A Active JP6697878B2 (ja) | 2012-06-21 | 2013-06-17 | 磁気共鳴検査システム |
JP2019079221A Expired - Fee Related JP6695474B2 (ja) | 2012-06-21 | 2019-04-18 | 磁気共鳴検査システム |
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JP2019079221A Expired - Fee Related JP6695474B2 (ja) | 2012-06-21 | 2019-04-18 | 磁気共鳴検査システム |
Country Status (7)
Country | Link |
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US (1) | US10702212B2 (ja) |
EP (1) | EP2863795B1 (ja) |
JP (2) | JP6697878B2 (ja) |
CN (1) | CN104470426B (ja) |
BR (1) | BR112014031569A8 (ja) |
RU (2) | RU2018145719A (ja) |
WO (1) | WO2013190451A1 (ja) |
Families Citing this family (10)
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DE102012216303A1 (de) * | 2012-09-13 | 2014-03-13 | Siemens Aktiengesellschaft | Magnetresonanzaufnahmeeinheit sowie eine Magnetresonanzvorrichtung mit der Magnetresonanzaufnahmeeinheit |
WO2015173817A2 (en) * | 2014-05-13 | 2015-11-19 | Aspect Imaging Ltd. | Protective and immobilizing sleeves with sensors, and methods for reducing the effect of object movement during MRI scanning |
DE102015200510A1 (de) * | 2015-01-15 | 2016-07-21 | Siemens Healthcare Gmbh | Bewegungssensor |
JP6987040B2 (ja) * | 2015-08-28 | 2021-12-22 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 運動関係を決定する方法及び装置 |
DE102016125156B4 (de) | 2015-12-23 | 2023-08-10 | Volkswagen Aktiengesellschaft | Verfahren zur Reinigung eines Kraftstoff-Einspritzventils mittels Ultraschallanregung |
US10466332B2 (en) * | 2017-02-21 | 2019-11-05 | General Electric Company | Systems and methods for an interleaved RF coil acquisition scheme |
EP3486672A1 (en) * | 2017-11-16 | 2019-05-22 | Koninklijke Philips N.V. | Magnetic resonance imaging system with rf motion detection |
EP3674736A1 (en) * | 2018-12-24 | 2020-07-01 | Koninklijke Philips N.V. | Adjusting of radiofrequency array using a camera system |
EP4049054A1 (en) | 2019-10-25 | 2022-08-31 | Hyperfine Operations, Inc. | Systems and methods for detecting patient motion during magnetic resonance imaging |
EP4253979A1 (en) * | 2022-03-28 | 2023-10-04 | Koninklijke Philips N.V. | Magnetic resonance receiver coil array with sensor node |
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JPH0683002U (ja) * | 1993-05-18 | 1994-11-29 | ジーイー横河メディカルシステム株式会社 | Rf磁場補正装置 |
US6612992B1 (en) * | 2000-03-02 | 2003-09-02 | Acuson Corp | Medical diagnostic ultrasound catheter and method for position determination |
JP4634570B2 (ja) * | 2000-06-05 | 2011-02-16 | 株式会社東芝 | Mri装置 |
DE10130071A1 (de) * | 2001-06-21 | 2003-02-13 | Philips Corp Intellectual Pty | MR-Verfahren und MR-Anordnung mit Mitteln zur Korrektur von Positions- und/oder Lageänderungen von Spulen |
AU2003241457A1 (en) * | 2002-05-17 | 2003-12-02 | Musc Foundation For Research Development | Method, apparatus, and system for automatically positioning a probe or sensor |
US6798199B2 (en) * | 2003-02-06 | 2004-09-28 | Siemens Medical Solutions Usa, Inc. | Method for synchronizing magnetic resonance imaging data to body motion |
WO2005020790A2 (en) | 2003-08-21 | 2005-03-10 | Ischem Corporation | Automated methods and systems for vascular plaque detection and analysis |
US7251521B2 (en) | 2003-11-19 | 2007-07-31 | Igc Medical Advances, Inc. | Motion sensing MRI local coil |
WO2006117723A1 (en) * | 2005-05-02 | 2006-11-09 | Koninklijke Philips Electronics N.V. | Independent motion correction in respective signal channels of a magnetic resonance imaging system |
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US8386011B2 (en) * | 2007-08-10 | 2013-02-26 | Koninklijke Philips Electronics N.V. | Motion detection in medical systems |
DE102008010717A1 (de) * | 2008-02-22 | 2009-08-27 | Siemens Aktiengesellschaft | Vorrichtung und Verfahren zur Anzeige einer medizinischen Bildinformation sowie bildgebendes System mit einer derartigen Vorrichtung |
FR2929464B1 (fr) * | 2008-03-28 | 2011-09-09 | Commissariat Energie Atomique | Nano resonnateur magnetique |
JP2010131200A (ja) * | 2008-12-04 | 2010-06-17 | Toshiba Corp | Mri装置及びmri装置用撮影トリガ信号発生ユニット |
DE102008064105A1 (de) * | 2008-12-19 | 2010-07-08 | Siemens Aktiengesellschaft | Vorrichtung zur Positionsbestimmung von wenigstens einer an einer Patientenliege einer Magnetresonanzeinrichtung angeordneten oder anzuordnenden Lokalspule, Magnetresonanzanlage mit einer solchen Vorrichtung und zugehöriges Verfahren |
US20110204891A1 (en) * | 2009-06-25 | 2011-08-25 | Lockheed Martin Corporation | Direct magnetic imaging apparatus and method |
WO2011033422A1 (en) | 2009-09-17 | 2011-03-24 | Koninklijke Philips Electronics N.V. | Mr imaging system comprising physiological sensors |
DE102012216327B4 (de) * | 2012-09-13 | 2021-01-14 | Siemens Healthcare Gmbh | Verfahren zur Erfassung einer Bewegung eines Patienten während einer medizinischen Bildgebungsuntersuchung |
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- 2013-06-17 JP JP2015517898A patent/JP6697878B2/ja active Active
- 2013-06-17 RU RU2018145719A patent/RU2018145719A/ru not_active Application Discontinuation
- 2013-06-17 CN CN201380032529.5A patent/CN104470426B/zh active Active
- 2013-06-17 RU RU2015101713A patent/RU2015101713A/ru unknown
- 2013-06-17 WO PCT/IB2013/054960 patent/WO2013190451A1/en active Application Filing
- 2013-06-17 BR BR112014031569A patent/BR112014031569A8/pt not_active IP Right Cessation
- 2013-06-17 EP EP13753343.6A patent/EP2863795B1/en active Active
- 2013-06-17 US US14/408,312 patent/US10702212B2/en active Active
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Publication number | Publication date |
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US10702212B2 (en) | 2020-07-07 |
RU2018145719A (ru) | 2019-01-25 |
BR112014031569A8 (pt) | 2021-03-02 |
EP2863795B1 (en) | 2023-05-31 |
CN104470426A (zh) | 2015-03-25 |
EP2863795A1 (en) | 2015-04-29 |
WO2013190451A1 (en) | 2013-12-27 |
RU2015101713A (ru) | 2016-08-10 |
CN104470426B (zh) | 2021-05-25 |
JP2015519989A (ja) | 2015-07-16 |
JP6695474B2 (ja) | 2020-05-20 |
JP2019134959A (ja) | 2019-08-15 |
US20150150511A1 (en) | 2015-06-04 |
BR112014031569A2 (pt) | 2017-06-27 |
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