JP4376779B2 - 血流同期mri - Google Patents
血流同期mri Download PDFInfo
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- JP4376779B2 JP4376779B2 JP2004509446A JP2004509446A JP4376779B2 JP 4376779 B2 JP4376779 B2 JP 4376779B2 JP 2004509446 A JP2004509446 A JP 2004509446A JP 2004509446 A JP2004509446 A JP 2004509446A JP 4376779 B2 JP4376779 B2 JP 4376779B2
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- 230000017531 blood circulation Effects 0.000 title claims abstract description 48
- 230000000747 cardiac effect Effects 0.000 claims abstract description 69
- 238000005259 measurement Methods 0.000 claims abstract description 8
- 238000003384 imaging method Methods 0.000 claims description 36
- 239000008280 blood Substances 0.000 claims description 10
- 210000004369 blood Anatomy 0.000 claims description 10
- 238000013480 data collection Methods 0.000 claims description 7
- 238000002592 echocardiography Methods 0.000 claims description 7
- 210000004204 blood vessel Anatomy 0.000 claims description 2
- 230000001133 acceleration Effects 0.000 claims 2
- 230000006698 induction Effects 0.000 claims 2
- 230000001939 inductive effect Effects 0.000 claims 2
- 238000013213 extrapolation Methods 0.000 claims 1
- 238000002595 magnetic resonance imaging Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 230000005284 excitation Effects 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 238000002583 angiography Methods 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 210000005240 left ventricle Anatomy 0.000 description 3
- 210000001124 body fluid Anatomy 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 2
- 238000002059 diagnostic imaging Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 206010002329 Aneurysm Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000000454 anti-cipatory effect Effects 0.000 description 1
- 210000000709 aorta Anatomy 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001605 fetal effect Effects 0.000 description 1
- 230000008338 local blood flow Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000000264 spin echo pulse sequence Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7271—Specific aspects of physiological measurement analysis
- A61B5/7285—Specific aspects of physiological measurement analysis for synchronising or triggering a physiological measurement or image acquisition with a physiological event or waveform, e.g. an ECG signal
-
- 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
-
- 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
- G01R33/567—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution gated by physiological signals, i.e. synchronization of acquired MR data with periodical motion of an object of interest, e.g. monitoring or triggering system for cardiac or respiratory gating
- G01R33/5676—Gating or triggering based on an MR signal, e.g. involving one or more navigator echoes for motion monitoring and correction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/026—Measuring blood flow
- A61B5/0263—Measuring blood flow using NMR
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/7253—Details of waveform analysis characterised by using transforms
- A61B5/7257—Details of waveform analysis characterised by using transforms using Fourier transforms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7271—Specific aspects of physiological measurement analysis
- A61B5/7285—Specific aspects of physiological measurement analysis for synchronising or triggering a physiological measurement or image acquisition with a physiological event or waveform, e.g. an ECG signal
- A61B5/7289—Retrospective gating, i.e. associating measured signals or images with a physiological event after the actual measurement or image acquisition, e.g. by simultaneously recording an additional physiological signal during the measurement or image acquisition
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7271—Specific aspects of physiological measurement analysis
- A61B5/7285—Specific aspects of physiological measurement analysis for synchronising or triggering a physiological measurement or image acquisition with a physiological event or waveform, e.g. an ECG signal
- A61B5/7292—Prospective gating, i.e. predicting the occurrence of a physiological event for use as a synchronisation signal
-
- 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
- G01R33/56308—Characterization of motion or flow; Dynamic imaging
- G01R33/56316—Characterization of motion or flow; Dynamic imaging involving phase contrast techniques
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Radiology & Medical Imaging (AREA)
- Public Health (AREA)
- Physiology (AREA)
- Biomedical Technology (AREA)
- Signal Processing (AREA)
- Veterinary Medicine (AREA)
- High Energy & Nuclear Physics (AREA)
- Animal Behavior & Ethology (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Heart & Thoracic Surgery (AREA)
- Pathology (AREA)
- Pulmonology (AREA)
- Psychiatry (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Artificial Intelligence (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Power Engineering (AREA)
- Cardiology (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
Description
N=[血流を持つ信号]−[血流の無い基準信号]
N=[血流エンコード勾配を持つ信号]−[血流勾配の無い基準信号]
フーリエ変換は、前記血流の位相エンコードを速度分布に変換する。前記位相コントラスト・ナビゲータに対する選択された領域は、スライスに対して1次元であることができ、選択されたボリュームに対して2次元又は3次元であることができ、好ましくは前記選択された領域は、血流エンコード勾配にそろえられる。位相コントラストRFパルスシーケンスは、印加される場合に、血流を含む領域において共鳴を励起する。もし励起された領域が全体的に、血流内であるならば、前記RF信号の位相は、前記血流の速度に比例する。もし前記励起された領域に他の組織が存在するならば、基準スキャンが行われ、静的な組織背景を減算するために使用される。
Claims (10)
- 関心領域及び血流領域が配置された撮像領域内に主磁場を生成する主磁場手段と、
ナビゲータ・エコーを生成するために前記血流領域に対して少なくとも1つの位相コントラスト・ナビゲータ・シーケンスを印加し、前記関心領域に対して撮像シーケンスを印加する手段と、
前記ナビゲータ・エコーから前記血流領域における血流速度を測定する手段と、
前記血流速度の測定値に従って前記心周期における時点を決定し、前記決定された時点に応答して前記撮像シーケンスをゲーティングするゲーティング手段と、
を有する磁気共鳴装置。 - 前記ナビゲータ・シーケンスが、血流速度を示すナビゲータ・エコーを生成する、請求項1に記載の磁気共鳴装置。
- 前記血流領域が、非血液組織をも含み、前記磁気共鳴装置が更に、
前記ナビゲータ・エコーに対する非血液組織の寄与を示すナビゲータ・ベースライン測定値を収集する手段、
を含む、請求項1及び2の何れか一項に記載の磁気共鳴装置。 - 少なくとも1心周期にわたり位相コントラスト・ナビゲータを繰り返し印加し、前記心周期にわたり複数の血流速度の測定値を決定する手段と、
前記血流速度の測定値から前記心周期を示す時間対血流速度の心周期プロットを生成する手段と、
を更に含む、請求項1乃至3の何れか一項に記載の磁気共鳴装置。 - 撮像されるべき前記心周期の一部を選択するように前記心周期プロットに対して血流測定値の閾値を設定する手段、
を更に含む、請求項4に記載の磁気共鳴装置。 - 前記心周期プロットと心電図信号とを相互に関連付ける手段、
を更に含む、請求項5に記載の磁気共鳴装置。 - 前記印加されたナビゲータ・シーケンスが、エンコードされた速度及び加速度であるナビゲータ・エコーを生成し、前記磁気共鳴装置が更に、
前記心周期プロットの一次導関数を得る導関数手段と、
前記心周期における時点を決定するために前記血流の前記速度及び加速度を前記心周期プロットの振幅及び導関数と比較する手段と、
を更に含む、請求項4乃至6の何れか一項に記載の磁気共鳴装置。 - 前記心周期における前記決定された時点に応答して撮像シーケンス・データ収集を誘発する手段、
を更に含む、請求項7に記載の磁気共鳴装置。 - 誘発時間を決定するために前記心周期プロットの前記一次導関数に基づいて前記心周期プロットに対して少なくとも1つの外挿アルゴリズムを適用する手段と、
前記誘発時間において前記関心領域のデータ収集を誘発する手段と、
を更に含む、請求項7及び8に記載の磁気共鳴装置。 - 前記血流領域の配置を血管と調整するために前記ナビゲータ・シーケンスを調整する手段、
を更に含む、請求項1乃至9の何れか一項に記載の磁気共鳴装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/162,379 US6922580B2 (en) | 2002-06-04 | 2002-06-04 | Blood flow gated MRI |
PCT/IB2003/002058 WO2003102618A1 (en) | 2002-06-04 | 2003-05-28 | Blood flow gated mri |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005528175A JP2005528175A (ja) | 2005-09-22 |
JP4376779B2 true JP4376779B2 (ja) | 2009-12-02 |
Family
ID=29583595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004509446A Expired - Lifetime JP4376779B2 (ja) | 2002-06-04 | 2003-05-28 | 血流同期mri |
Country Status (7)
Country | Link |
---|---|
US (1) | US6922580B2 (ja) |
EP (1) | EP1514129B1 (ja) |
JP (1) | JP4376779B2 (ja) |
AT (1) | ATE382870T1 (ja) |
AU (1) | AU2003232383A1 (ja) |
DE (1) | DE60318438T2 (ja) |
WO (1) | WO2003102618A1 (ja) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7561909B1 (en) * | 2002-09-16 | 2009-07-14 | The United States Of America As Represented By The Department Of Health And Human Services | MRI navigator methods and systems |
DE10256209B4 (de) * | 2002-12-02 | 2007-06-21 | Siemens Ag | Verfahren zur automatischen Bestimmung des tatsächlichen Geschwindigkeitsintervalls eines fließenden Mediums bei Flussmessungen in der Magnetresonanz-Tomographie sowie Kernspintomographiegerät und Computersoftwareprodukt |
US6798199B2 (en) * | 2003-02-06 | 2004-09-28 | Siemens Medical Solutions Usa, Inc. | Method for synchronizing magnetic resonance imaging data to body motion |
JP4820567B2 (ja) * | 2004-03-26 | 2011-11-24 | 株式会社東芝 | 磁気共鳴イメージング装置及び磁気共鳴信号の収集方法 |
CN100479748C (zh) * | 2004-03-26 | 2009-04-22 | 株式会社东芝 | 核磁共振成像装置 |
US7238027B2 (en) * | 2004-07-20 | 2007-07-03 | Cardiac Pacemakers, Inc. | Device functionality representation tool |
FR2880252A1 (fr) * | 2005-01-06 | 2006-07-07 | Yves Darlas | " nouvelle methode d'analyse et de mesure de la distribution ou de la reserve sanguine coronarienne " |
US8000768B2 (en) * | 2005-01-10 | 2011-08-16 | Vassol Inc. | Method and system for displaying blood flow |
DE102005027438B4 (de) * | 2005-06-14 | 2011-12-22 | Siemens Ag | Verfahren zur EKG-Triggerung einer Messsequenz eines Magnetresonanzgeräts |
US7613496B2 (en) * | 2005-09-22 | 2009-11-03 | Kabushiki Kaisha Toshiba | Magnetic resonance imaging apparatus and magnetic resonance imaging method |
JP4702107B2 (ja) * | 2006-03-03 | 2011-06-15 | 株式会社日立製作所 | 生体光計測装置 |
US7693568B2 (en) | 2006-03-30 | 2010-04-06 | Medtronic, Inc. | Medical device sensing and detection during MRI |
US8190244B2 (en) * | 2007-01-23 | 2012-05-29 | Case Western Reserve University | Gated optical coherence tomography (OCT) environmental chamber |
US8320647B2 (en) | 2007-11-20 | 2012-11-27 | Olea Medical | Method and system for processing multiple series of biological images obtained from a patient |
BRPI0907547B8 (pt) | 2008-02-28 | 2021-07-27 | Koninklijke Philips Electronics Nv | sistema de ressonância magnética, monitor seguro de pressão sanguínea para a mri, e, método para monitorar um objeto em um campo magnético |
JP2010063871A (ja) * | 2008-08-12 | 2010-03-25 | Toshiba Corp | 磁気共鳴イメージング装置 |
DE102008060049A1 (de) * | 2008-12-02 | 2010-06-17 | Siemens Aktiengesellschaft | Verfahren zur Bestimmung einer Kodierung für eine Flussmessung und Verfahren zur Flussmessung sowie entsprechend ausgestaltete Magnetresonanzanlage |
JP5542495B2 (ja) * | 2009-06-08 | 2014-07-09 | 株式会社東芝 | 磁気共鳴イメージング装置 |
JP2011156078A (ja) * | 2010-01-29 | 2011-08-18 | Ge Medical Systems Global Technology Co Llc | 磁気共鳴イメージング装置およびプログラム |
WO2012096878A2 (en) | 2011-01-10 | 2012-07-19 | East Carolina University | Methods, systems and computer program products for non-invasive determination of blood flow distribution using speckle imaging techniques and hemodynamic modeling |
US9226673B2 (en) * | 2011-01-10 | 2016-01-05 | East Carolina University | Methods, systems and computer program products for non-invasive determination of blood flow distribution using speckle imaging techniques and hemodynamic modeling |
JP5284422B2 (ja) * | 2011-06-27 | 2013-09-11 | 学校法人東海大学 | 磁気共鳴イメージング装置 |
DE102012216248A1 (de) * | 2012-09-13 | 2014-03-13 | Siemens Aktiengesellschaft | Medizinische Bildgebungsvorrichtung mit einer Sensoreinheit zu einem Erfassen eines physiologischen Signals sowie ein Verfahren zu einem Erfassen eines Herzzyklus eines Patienten |
DE102014206724B4 (de) * | 2014-04-08 | 2015-11-12 | Siemens Aktiengesellschaft | Dynamische Bildgebung mit variablem Kontrast |
US10792492B2 (en) | 2014-10-14 | 2020-10-06 | East Carolina University | Methods, systems and computer program products for determining physiologic status parameters using signals derived from multispectral blood flow and perfusion imaging |
CA2963861C (en) | 2014-10-14 | 2023-10-03 | East Carolina University | Methods, systems and computer program products for visualizing anatomical structures and blood flow and perfusion physiology using imaging techniques |
US11553844B2 (en) | 2014-10-14 | 2023-01-17 | East Carolina University | Methods, systems and computer program products for calculating MetaKG signals for regions having multiple sets of optical characteristics |
US10390718B2 (en) | 2015-03-20 | 2019-08-27 | East Carolina University | Multi-spectral physiologic visualization (MSPV) using laser imaging methods and systems for blood flow and perfusion imaging and quantification in an endoscopic design |
US10058256B2 (en) | 2015-03-20 | 2018-08-28 | East Carolina University | Multi-spectral laser imaging (MSLI) methods and systems for blood flow and perfusion imaging and quantification |
JP6996930B2 (ja) * | 2017-10-13 | 2022-01-17 | キヤノンメディカルシステムズ株式会社 | 磁気共鳴イメージング装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5070876A (en) * | 1989-08-07 | 1991-12-10 | The Board Of Trustees Of The Leland Stanford Junior University | Flow-independent magnetic resonance projection angiography |
US5031624A (en) * | 1990-08-17 | 1991-07-16 | Wisconsin Alumni Research Foundation | Phase contrast, line-scanned method for NMR angiography |
US5133357A (en) * | 1991-02-07 | 1992-07-28 | General Electric Company | Quantitative measurement of blood flow using cylindrically localized fourier velocity encoding |
US5233298A (en) * | 1992-02-20 | 1993-08-03 | General Electric Company | Quantitative measurement of blood flow at multiple positions using comb excitation and fourier velocity encoding |
US5435303A (en) * | 1993-08-04 | 1995-07-25 | General Electric Company | MRA image produced by temporal flow data sharing |
US6268730B1 (en) | 1999-05-24 | 2001-07-31 | Ge Medical Systems Global Technology Company Llc | Multi-slab multi-window cardiac MR imaging |
US6516210B1 (en) * | 2000-11-22 | 2003-02-04 | Koninklijke Philips Electronics N.V. | Signal analysis for navigated magnetic resonance imaging |
-
2002
- 2002-06-04 US US10/162,379 patent/US6922580B2/en not_active Expired - Fee Related
-
2003
- 2003-05-28 AT AT03756077T patent/ATE382870T1/de not_active IP Right Cessation
- 2003-05-28 AU AU2003232383A patent/AU2003232383A1/en not_active Abandoned
- 2003-05-28 DE DE60318438T patent/DE60318438T2/de not_active Expired - Lifetime
- 2003-05-28 JP JP2004509446A patent/JP4376779B2/ja not_active Expired - Lifetime
- 2003-05-28 EP EP03756077A patent/EP1514129B1/en not_active Expired - Lifetime
- 2003-05-28 WO PCT/IB2003/002058 patent/WO2003102618A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
WO2003102618A1 (en) | 2003-12-11 |
US20030225328A1 (en) | 2003-12-04 |
DE60318438D1 (de) | 2008-02-14 |
AU2003232383A1 (en) | 2003-12-19 |
EP1514129A1 (en) | 2005-03-16 |
ATE382870T1 (de) | 2008-01-15 |
EP1514129B1 (en) | 2008-01-02 |
DE60318438T2 (de) | 2008-12-18 |
JP2005528175A (ja) | 2005-09-22 |
US6922580B2 (en) | 2005-07-26 |
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