ES2118942T3 - Metodo para mejorar la sensibilidad de imagenes de resonancia magnetica (mri) para efectos de susceptibilidad magnetica. - Google Patents
Metodo para mejorar la sensibilidad de imagenes de resonancia magnetica (mri) para efectos de susceptibilidad magnetica.Info
- Publication number
- ES2118942T3 ES2118942T3 ES93906182T ES93906182T ES2118942T3 ES 2118942 T3 ES2118942 T3 ES 2118942T3 ES 93906182 T ES93906182 T ES 93906182T ES 93906182 T ES93906182 T ES 93906182T ES 2118942 T3 ES2118942 T3 ES 2118942T3
- Authority
- ES
- Spain
- Prior art keywords
- gradient
- recalled
- effects
- sensitivity
- mri
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- 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
- G01R33/561—Image enhancement or correction, e.g. subtraction or averaging techniques, e.g. improvement of signal-to-noise ratio and resolution by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
-
- 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
- G01R33/4806—Functional imaging of brain activation
-
- 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
- G01R33/56527—Correction of image distortions, e.g. due to magnetic field inhomogeneities due to chemical shift effects
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- High Energy & Nuclear Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Vascular Medicine (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
SE PRESENTA UN METODO PARA MEJORAR LA SENSIBILIDAD DE LA FORMACION DE IMAGENES MEDIANTE ECO LLAMADO POR GRADIENTE PARA EFECTOS T2* EN FORMACION DE IMAGENES MEDIANTE RESONANCIA MAGNETICA DINAMICA QUE COMPRENDE LOS PASOS DE RETARDAR LOS ECOS LLAMADOS POR GRADIENTE DE MANERA QUE LOS ECOS LLAMADOS POR GRADIENTE SE EXPONGAN A LOS EFECTOS DE SUSCEPTIBILIDAD MAGNETICA DURANTE UN PERIODO DE TIEMPO EXTENDIDO. LOS ECOS SE RETARDAN MAS ALLA DE UN IMPULSO DE RADIOFRECUENCIA SUBSECUENTE MEDIANTE LA APLICACION DE UN GRADIENTE ADICIONAL QUE DESFASA CUALQUIER ECO LLAMADO POR GRADIENTE DE LOS ESPINES QUE SE EXCITAN EN EL PERIODO DE TIEMPO DE REPETICION DE LA RADIOFRECUENCIA EN EL CUAL SE PRODUCEN DICHOS ECOS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/841,994 US5300886A (en) | 1992-02-28 | 1992-02-28 | Method to enhance the sensitivity of MRI for magnetic susceptibility effects |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2118942T3 true ES2118942T3 (es) | 1998-10-01 |
Family
ID=25286275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES93906182T Expired - Lifetime ES2118942T3 (es) | 1992-02-28 | 1993-02-26 | Metodo para mejorar la sensibilidad de imagenes de resonancia magnetica (mri) para efectos de susceptibilidad magnetica. |
Country Status (9)
Country | Link |
---|---|
US (2) | US5300886A (es) |
EP (1) | EP0628171B1 (es) |
JP (1) | JPH07506984A (es) |
AT (1) | ATE169122T1 (es) |
AU (1) | AU3730793A (es) |
CA (1) | CA2131018A1 (es) |
DE (1) | DE69320032T2 (es) |
ES (1) | ES2118942T3 (es) |
WO (1) | WO1993017352A1 (es) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5300886A (en) * | 1992-02-28 | 1994-04-05 | The United States Of America As Represented By The Department Of Health & Human Services | Method to enhance the sensitivity of MRI for magnetic susceptibility effects |
DE4432575C2 (de) * | 1993-09-14 | 2003-04-10 | Toshiba Kawasaki Kk | Verfahren zur Bildgebung der Gehirnfunktion mittels einer Kernspinresonanz-Vorrichtung und hieran angepasste Kernspinresonanz-Vorrichtung |
US5561369A (en) * | 1994-07-29 | 1996-10-01 | Feinberg; David A. | Variation of number and duration of gradient read times during a single pulse sequence for proton density and T2 -weighted images |
US5685305A (en) * | 1994-08-05 | 1997-11-11 | The United States Of America As Represented By The Department Of Health And Human Services | Method and system for MRI detection of abnormal blood flow |
US5612619A (en) * | 1995-07-31 | 1997-03-18 | Feinberg David A | Grase-type three-dimensional MR pulse sequences |
JPH0966040A (ja) * | 1995-08-31 | 1997-03-11 | Res Dev Corp Of Japan | 磁気共鳴画像の取得方法と、糖尿病診断方法 |
WO1999030187A1 (en) * | 1997-12-05 | 1999-06-17 | The Pennsylvania State University | Mri with removal of field inhomogeneity artifacts |
CA2327705A1 (en) * | 1998-04-08 | 1999-10-14 | Bruce G. Jenkins | Pharmacological mri (phmri) |
DE19923587B4 (de) * | 1999-05-22 | 2004-08-05 | Forschungszentrum Jülich GmbH | Verfahren zumr Auswertung von Daten aus Messungen von kernmagnetischer Resonanz |
US6445184B1 (en) * | 2001-11-20 | 2002-09-03 | Koninklijke Philips Electronics N.V. | Multiple gradient echo type projection reconstruction sequence for MRI especially for diffusion weighted MRI |
US6914428B2 (en) * | 2002-08-15 | 2005-07-05 | General Electric Company | Magnetic resonance imaging systems and methods for acquiring multi-slice gradient echo images |
JP4309632B2 (ja) * | 2002-10-08 | 2009-08-05 | 株式会社東芝 | 磁気共鳴イメージング装置 |
US20060118758A1 (en) * | 2004-09-15 | 2006-06-08 | Xingwu Wang | Material to enable magnetic resonance imaging of implantable medical devices |
US7368910B2 (en) * | 2004-09-17 | 2008-05-06 | The Board Of Trustees Of The Leland Stanford Junior University | Dual gradient echo pulse sequence using interleaved spiral-out spiral-in k-space trajectories |
US7375519B2 (en) * | 2006-04-20 | 2008-05-20 | General Electric Company | Method and apparatus of MR imaging with two dimensional phase and magnitude correction |
EP1959397B1 (en) * | 2007-02-19 | 2019-08-07 | Wisconsin Alumni Research Foundation | Iterative HYPR medical image reconstruction |
JP5424902B2 (ja) | 2007-03-06 | 2014-02-26 | コーニンクレッカ フィリップス エヌ ヴェ | Pet/mrフロー推定を用いて補われる自動診断及び自動整列 |
DE102007045172B3 (de) * | 2007-09-20 | 2009-04-30 | Rheinisch-Westfälische Technische Hochschule Aachen | Verfahren zum Betrieb eines Magnetresonanztomographen mit physiologisch synchronisierter Kompensations-Messsequenz |
US7800367B2 (en) * | 2008-04-02 | 2010-09-21 | General Electric Co. | Method and apparatus for generating T2* weighted magnetic resonance images |
CN102540125B (zh) * | 2012-01-11 | 2014-05-28 | 华东师范大学 | 一种磁共振成像系统磁场梯度延时的快速测量方法 |
US10151815B2 (en) | 2012-05-23 | 2018-12-11 | Konninklijke Philips N.V. | Multi-echo PRESTO |
KR101819908B1 (ko) * | 2016-05-27 | 2018-01-18 | 한국과학기술원 | 자기공명 영상 생성방법 및 그를 위한 장치 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4734646A (en) * | 1986-09-16 | 1988-03-29 | Fonar Corporation | Method for obtaining T1-weighted and T2-weighted NMR images for a plurality of selected planes in the course of a single scan |
US4986272A (en) * | 1989-08-09 | 1991-01-22 | Mayo Foundation For Medical Education And Research | NMR imaging with variable repetition |
JPH04364829A (ja) * | 1990-02-15 | 1992-12-17 | Toshiba Corp | 磁気共鳴画像処理方法及び装置 |
US5270654A (en) * | 1991-07-05 | 1993-12-14 | Feinberg David A | Ultra-fast multi-section MRI using gradient and spin echo (grase) imaging |
US5300886A (en) * | 1992-02-28 | 1994-04-05 | The United States Of America As Represented By The Department Of Health & Human Services | Method to enhance the sensitivity of MRI for magnetic susceptibility effects |
-
1992
- 1992-02-28 US US07/841,994 patent/US5300886A/en not_active Expired - Lifetime
-
1993
- 1993-02-26 JP JP5515033A patent/JPH07506984A/ja active Pending
- 1993-02-26 CA CA002131018A patent/CA2131018A1/en not_active Abandoned
- 1993-02-26 AT AT93906182T patent/ATE169122T1/de not_active IP Right Cessation
- 1993-02-26 DE DE69320032T patent/DE69320032T2/de not_active Expired - Lifetime
- 1993-02-26 AU AU37307/93A patent/AU3730793A/en not_active Abandoned
- 1993-02-26 EP EP93906182A patent/EP0628171B1/en not_active Expired - Lifetime
- 1993-02-26 WO PCT/US1993/001609 patent/WO1993017352A1/en active IP Right Grant
- 1993-02-26 ES ES93906182T patent/ES2118942T3/es not_active Expired - Lifetime
- 1993-08-13 US US08/106,372 patent/US5459400A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2131018A1 (en) | 1993-09-02 |
JPH07506984A (ja) | 1995-08-03 |
ATE169122T1 (de) | 1998-08-15 |
AU3730793A (en) | 1993-09-13 |
EP0628171A1 (en) | 1994-12-14 |
DE69320032T2 (de) | 1999-01-21 |
EP0628171B1 (en) | 1998-07-29 |
US5300886A (en) | 1994-04-05 |
WO1993017352A1 (en) | 1993-09-02 |
US5459400A (en) | 1995-10-17 |
DE69320032D1 (de) | 1998-09-03 |
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