IL110428A - מדידת זרימה ע" י שיטה של הפרשים מורכבים של בדמיית תהודה מגנטית - Google Patents

מדידת זרימה ע" י שיטה של הפרשים מורכבים של בדמיית תהודה מגנטית

Info

Publication number
IL110428A
IL110428A IL11042894A IL11042894A IL110428A IL 110428 A IL110428 A IL 110428A IL 11042894 A IL11042894 A IL 11042894A IL 11042894 A IL11042894 A IL 11042894A IL 110428 A IL110428 A IL 110428A
Authority
IL
Israel
Prior art keywords
array
values
difference array
flow
phase
Prior art date
Application number
IL11042894A
Other languages
English (en)
Other versions
IL110428A0 (en
Original Assignee
Wisconsin Alumni Res Found
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wisconsin Alumni Res Found filed Critical Wisconsin Alumni Res Found
Publication of IL110428A0 publication Critical patent/IL110428A0/xx
Publication of IL110428A publication Critical patent/IL110428A/he

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
    • G01R33/563—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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • G01F1/708—Measuring the time taken to traverse a fixed distance
    • G01F1/716—Measuring the time taken to traverse a fixed distance using electron paramagnetic resonance [EPR] or nuclear magnetic resonance [NMR]
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Fluid Mechanics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Measuring Volume Flow (AREA)
IL11042894A 1993-08-13 1994-07-25 מדידת זרימה ע" י שיטה של הפרשים מורכבים של בדמיית תהודה מגנטית IL110428A (he)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/107,110 US5408180A (en) 1993-08-13 1993-08-13 Measurement of flow using a complex difference method of magnetic resonance imaging

Publications (2)

Publication Number Publication Date
IL110428A0 IL110428A0 (en) 1994-10-21
IL110428A true IL110428A (he) 1996-05-14

Family

ID=22314897

Family Applications (1)

Application Number Title Priority Date Filing Date
IL11042894A IL110428A (he) 1993-08-13 1994-07-25 מדידת זרימה ע" י שיטה של הפרשים מורכבים של בדמיית תהודה מגנטית

Country Status (4)

Country Link
US (1) US5408180A (he)
EP (1) EP0638816A3 (he)
JP (1) JP3506149B2 (he)
IL (1) IL110428A (he)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5408180A (en) 1993-08-13 1995-04-18 Wisconsin Alumni Research Foundation Measurement of flow using a complex difference method of magnetic resonance imaging
US5509412A (en) * 1994-08-24 1996-04-23 Wisconsin Alumni Research Foundation Magnetic resonance imaging of blood volume
JP3585139B2 (ja) * 1996-02-19 2004-11-04 株式会社日立メディコ 磁気共鳴診断装置における流速計算装置
US5900731A (en) * 1996-12-17 1999-05-04 General Electric Company Encoding flow information using MR signal magnitude
US6031374A (en) * 1997-04-11 2000-02-29 Epstein; Frederick H. Method for extracting deformations from velocity-encoded magnetic resonance images of the heart
US6094591A (en) * 1998-04-10 2000-07-25 Sunnybrook Health Science Centre Measurement of coronary flow reserve with MR oximetry
US6980845B1 (en) * 1998-04-13 2005-12-27 The Trustees Of The University Of Pennsylvania Multi-slice cerebral blood flow imaging with continuous arterial spin labeling MRI
US6192264B1 (en) * 1998-12-28 2001-02-20 General Electric Company Method and system for MRI venography including arterial and venous discrimination
US6188922B1 (en) * 1999-01-08 2001-02-13 Wisconsin Alumni Research Foundation Phase contrast imaging using interleaved projection data
DE60030580T2 (de) 1999-11-16 2007-05-16 Wollin Ventures, Inc., Marathon Magnetische-resonanz-durchflussmesser und -durchflussmessverfahren
US6486667B1 (en) * 2000-03-31 2002-11-26 Koninklijke Philips Electronics N.V. Combination of fluid-attenuated inversion-recovery complex images acquired using magnetic resonance imaging
US7049816B2 (en) * 2004-09-30 2006-05-23 Wisconsin Alumni Research Foundation Magnetic resonance imaging with dual velocity encoded projection reconstruction acquisition
DE102005027483B3 (de) * 2005-06-14 2006-12-07 Technische Universität München Verfahren und Steuereinrichtung zur Gewinnung von Magnetresonanzdaten für Bildgebung sowie Computerprogrammprodukt
US7285954B2 (en) * 2005-09-14 2007-10-23 The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services Imaging and reconstruction of partial field of view in phase contrast MRI
WO2009081787A1 (ja) * 2007-12-25 2009-07-02 Hitachi Medical Corporation 磁気共鳴イメージング装置及び磁化率強調画像撮影方法
US8427147B2 (en) * 2009-04-10 2013-04-23 Wisconsin Alumni Research Foundation Magnetic resonance imaging with fat suppression by combining phase rotating data with phase shifted data in K-space
WO2011056122A1 (en) 2009-11-03 2011-05-12 Waahlin Anders A method and an apparatus for determining body vessel characteristics using pc-mri imaging
EP2910906B1 (de) * 2014-02-24 2020-05-27 Krohne AG Verfahren zum Betreiben eines kernmagnetischen Durchflussmessgeräts
CN110023777B (zh) * 2016-11-17 2022-05-27 皇家飞利浦有限公司 用于mr成像的方法、设备和计算机程序产品

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689560A (en) * 1985-08-16 1987-08-25 Picker International, Inc. Low R.F. dosage magnetic resonance imaging of high velocity flows
US4683431A (en) * 1985-08-16 1987-07-28 Picker International, Inc. Magnetic resonance imaging of high velocity flows
US5101156A (en) * 1990-08-09 1992-03-31 General Electric Rapid flow measurement using an nmr imaging system
US5031624A (en) * 1990-08-17 1991-07-16 Wisconsin Alumni Research Foundation Phase contrast, line-scanned method for NMR angiography
US5226418A (en) * 1991-08-01 1993-07-13 General Electric Company Phase correction of complex - difference processed magnetic resonance angiograms
US5363042A (en) * 1993-08-12 1994-11-08 General Electric Company Methods for measurement of longitudinal spin relaxation times in moving liquids
US5408180A (en) 1993-08-13 1995-04-18 Wisconsin Alumni Research Foundation Measurement of flow using a complex difference method of magnetic resonance imaging

Also Published As

Publication number Publication date
US5408180A (en) 1995-04-18
JPH07323022A (ja) 1995-12-12
EP0638816A3 (en) 1995-10-18
IL110428A0 (en) 1994-10-21
JP3506149B2 (ja) 2004-03-15
EP0638816A2 (en) 1995-02-15

Similar Documents

Publication Publication Date Title
US5226418A (en) Phase correction of complex - difference processed magnetic resonance angiograms
US5285158A (en) NMR angiography using fast pulse sequences with preparatory pulses
US8148984B2 (en) Method for magnitude constrained phase contrast magnetic resonance imaging
US7804299B2 (en) Diffusion weighted preparatory sequence for magnetic resonance imaging pulse sequence
US5408180A (en) Measurement of flow using a complex difference method of magnetic resonance imaging
US5262725A (en) Magnetic resonance imaging method and device for reducing image errors in a magnetic resonance image
EP1794610B1 (en) Magnetic resonance imaging with dual velocity encoded projection reconstruction acquisition
US8274284B2 (en) Parallel-accelerated complex subtraction MRI
US5280244A (en) Gradient moment nulling in a fast spin echo NMR pulse sequence
EP0445151A4 (en) Reducing motion artifacts in nmr images
JPH0654828A (ja) Ｎｍｒシステム
US20090256567A1 (en) Three-point method and system for fast and robust field mapping for epi geometric distortion correction
US5281916A (en) NMR angiography using fast spin echo pulse sequences
US8473028B2 (en) K-space sample density compensation for magnetic resonance image reconstruction
US6188922B1 (en) Phase contrast imaging using interleaved projection data
US20100256478A1 (en) Systems and methods for phase encode placement
US4968935A (en) Selective rephasing of NMR signals to suppress motion artifacts
US5101156A (en) Rapid flow measurement using an nmr imaging system
US7132826B1 (en) Characterization of receiver demodulation for correcting off-axis MR imaging degradation
US5093620A (en) Encoding for nmr phase contrast flow measurement
US8334694B2 (en) System and method for embedded self-calibration within an inversion recovery pulse sequence
US7327141B2 (en) Characterization of receiver demodulation for correcting off-axis MR imaging degradation
US5233302A (en) Masking motion ghost artifacts in NMR images

Legal Events

Date Code Title Description
FF Patent granted
KB Patent renewed
KB Patent renewed
KB Patent renewed
EXP Patent expired