KR910003450B1 - 영상 아티팩트 저감 방법 - Google Patents

영상 아티팩트 저감 방법 Download PDF

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Publication number
KR910003450B1
KR910003450B1 KR1019860006752A KR860006752A KR910003450B1 KR 910003450 B1 KR910003450 B1 KR 910003450B1 KR 1019860006752 A KR1019860006752 A KR 1019860006752A KR 860006752 A KR860006752 A KR 860006752A KR 910003450 B1 KR910003450 B1 KR 910003450B1
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KR
South Korea
Prior art keywords
gradient
view
views
phase
encoding
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Expired
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KR1019860006752A
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English (en)
Korean (ko)
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KR870002527A (ko
Inventor
죠셉 펠크 노버트
해롤드 글로버 개리
Original Assignee
제너럴 일렉트릭 캄파니
샘슨 헬프고트
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Publication of KR870002527A publication Critical patent/KR870002527A/ko
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Publication of KR910003450B1 publication Critical patent/KR910003450B1/ko
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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
    • G01R33/56—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
    • 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
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/80—Geometric correction
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10072—Tomographic images
    • G06T2207/10088—Magnetic resonance imaging [MRI]

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Signal Processing (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Theoretical Computer Science (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
KR1019860006752A 1985-08-16 1986-08-16 영상 아티팩트 저감 방법 Expired KR910003450B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/766,842 US4706026A (en) 1985-08-16 1985-08-16 Method for reducing image artifacts due to periodic signal variations in NMR imaging
US766842 1985-08-16

Publications (2)

Publication Number Publication Date
KR870002527A KR870002527A (ko) 1987-03-31
KR910003450B1 true KR910003450B1 (ko) 1991-05-31

Family

ID=25077686

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019860006752A Expired KR910003450B1 (ko) 1985-08-16 1986-08-16 영상 아티팩트 저감 방법

Country Status (7)

Country Link
US (1) US4706026A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0212526B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS6274352A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR (1) KR910003450B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3681855D1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FI (1) FI862553A7 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IL (1) IL79419A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4721912A (en) * 1985-09-30 1988-01-26 The Reagents Of The University Of California Apparatus and method for initially capturing most significant low spatial frequency NMR imaging data
US4751462A (en) * 1987-05-26 1988-06-14 General Electric Company Method for acquiring NMR data which is subject to periodic variations
US5035244A (en) * 1988-02-23 1991-07-30 Elscint Ltd. Motion artifact minimization
JPH01218439A (ja) * 1988-02-26 1989-08-31 Hitachi Ltd 磁気共鳴イメージング装置
JP2641486B2 (ja) * 1988-04-01 1997-08-13 株式会社日立製作所 Ｎｍｒイメージング装置
US4843322A (en) * 1988-08-15 1989-06-27 General Electric Company Method for producing multi-slice NMR images
US4937526A (en) * 1988-11-23 1990-06-26 Mayo Foundation For Medical Education And Research Adaptive method for reducing motion and flow artifacts in NMR images
US4959611A (en) * 1989-06-29 1990-09-25 Picker International, Inc. Out-of-slice artifact reduction technique for magnetic resonance imagers
US5051903A (en) * 1989-08-14 1991-09-24 General Electric Company Method and apparatus for predicting values of a varying periodic phenomenon
NL9002842A (nl) * 1990-12-21 1992-07-16 Philips Nv Magnetische resonantie werkwijze en inrichting ter reductie van beeldfouten in een magnetisch resonantie beeld.
US5280244A (en) * 1992-03-19 1994-01-18 General Electric Company Gradient moment nulling in a fast spin echo NMR pulse sequence
US5273041A (en) * 1992-04-30 1993-12-28 General Electric Company Fiber optic photoplethysmograph for a magnetic resonance imaging system
DE4343022C1 (de) * 1993-12-16 1995-03-30 Bruker Medizintech Magnetresonanz-Bildgebung mit kombiniertem Einzelpunkt- und Rückprojektionsaufnahmeverfahren
DE4343023C1 (de) * 1993-12-16 1995-03-09 Bruker Medizintech Magnetresonanz-Bildgebung mit kombiniertem Rückprojektions- und Fouriertransformationsverfahren
US5766128A (en) * 1996-08-23 1998-06-16 Picker International, Inc. Respiratory motion compensation using segmented k-space magnetic resonance imaging
US5729140A (en) * 1996-10-04 1998-03-17 Mayo Foundation For Medical Education And Research Suppression of artifacts in NMR images by correlation of two NEX acquistions
GB9726143D0 (en) * 1997-12-10 1998-02-11 Chapman Barry L Ghost artifact reduction
US6184682B1 (en) 1998-04-15 2001-02-06 Mayo Foundation For Medical Education And Research Correction of MR images for motion artifacts using navigator echoes and autocorrection
US6647134B1 (en) * 2000-03-30 2003-11-11 Mayo Foundation For Medical Education And Research Autocorrection of MR projection images
US7301341B2 (en) * 2003-10-08 2007-11-27 The Board Of Trustees Of The Leland Stanford Junior University MRI gradient waveform design using convex optimization
US7020243B2 (en) * 2003-12-05 2006-03-28 Ge Medical Systems Global Technology Company Llc Method and system for target angle heel effect compensation
US7945305B2 (en) * 2005-04-14 2011-05-17 The Board Of Trustees Of The University Of Illinois Adaptive acquisition and reconstruction of dynamic MR images
US7436176B2 (en) * 2006-03-27 2008-10-14 Fonar Corporation Magnetic resonance imaging using adaptive phase encoding gradient
US8386013B2 (en) * 2006-04-13 2013-02-26 The Regents Of The University Of California Magnetic resonance imaging (MRI) using ultra short echo times and spiral sampling in K-space
US8120358B2 (en) 2006-04-13 2012-02-21 The Regents Of The University Of California Magnetic resonance imaging with high spatial and temporal resolution
GB0619269D0 (en) * 2006-09-29 2006-11-08 King S College London Method of mapping a magnetic field for use in magnetic resonance imaging
US7602184B2 (en) * 2007-04-30 2009-10-13 The Regents Of The University Of California Magnetic resonance spectroscopic imaging with short echo times
US10132889B2 (en) * 2013-05-22 2018-11-20 General Electric Company System and method for reducing acoustic noise level in MR imaging

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528985A (en) * 1981-12-21 1985-07-16 Albert Macovski Blood vessel imaging system using nuclear magnetic resonance
US4607223A (en) * 1982-08-13 1986-08-19 National Research Development Corporation Nuclear magnetic resonance imaging method
US4516582A (en) * 1983-05-02 1985-05-14 General Electric Company NMR blood flow imaging
US4549140A (en) * 1983-06-03 1985-10-22 General Electric Company Method utilizing combined, interleaved pulse sequences for reducing motion artifacts in computed T1,T2 and M0 NMR imaging
JPS6012043A (ja) * 1983-06-30 1985-01-22 株式会社島津製作所 Ｎｍｒ映像法
US4616180A (en) * 1983-11-14 1986-10-07 Technicare Corporation Nuclear magnetic resonance imaging with reduced sensitivity to motional effects
GB8417290D0 (en) * 1984-07-06 1984-08-08 Picker Int Ltd Nuclear magnetic resonance method
US4567893A (en) * 1984-11-21 1986-02-04 General Electric Company Method of eliminating breathing artifacts in NMR imaging
US4612504A (en) * 1984-11-21 1986-09-16 General Electric Company Method for removing the effects of baseline error components in NMR imaging applications
US4614195A (en) * 1984-12-18 1986-09-30 General Electric Company Method for reduction of motion artifacts in Fourier transform NMR imaging techniques
US4779620A (en) * 1985-06-11 1988-10-25 Siemens Aktiengesellschaft Nuclear magnetic resonance tomography apparatus and method
EP0233235B1 (en) * 1985-08-09 1991-01-02 Picker International, Inc. Centrally ordered phase encoding

Also Published As

Publication number Publication date
EP0212526A3 (en) 1989-04-05
IL79419A0 (en) 1986-10-31
JPS6274352A (ja) 1987-04-06
IL79419A (en) 1990-07-12
JPH0351175B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-08-06
FI862553A7 (fi) 1987-02-17
EP0212526A2 (en) 1987-03-04
KR870002527A (ko) 1987-03-31
EP0212526B1 (en) 1991-10-09
FI862553A0 (fi) 1986-06-16
US4706026A (en) 1987-11-10
DE3681855D1 (de) 1991-11-14

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