DE3881432D1 - Verfahren zum erzeugen eines kernspinresonanzsignals von einer sich bewegenden fluessigkeit. - Google Patents

Verfahren zum erzeugen eines kernspinresonanzsignals von einer sich bewegenden fluessigkeit.

Info

Publication number
DE3881432D1
DE3881432D1 DE8888200536T DE3881432T DE3881432D1 DE 3881432 D1 DE3881432 D1 DE 3881432D1 DE 8888200536 T DE8888200536 T DE 8888200536T DE 3881432 T DE3881432 T DE 3881432T DE 3881432 D1 DE3881432 D1 DE 3881432D1
Authority
DE
Germany
Prior art keywords
reson
generating
signal
nuclear spin
moving liquid
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 - Fee Related
Application number
DE8888200536T
Other languages
English (en)
Other versions
DE3881432T2 (de
Inventor
As Hendrik Van
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of DE3881432D1 publication Critical patent/DE3881432D1/de
Publication of DE3881432T2 publication Critical patent/DE3881432T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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]
    • 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
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • Public Health (AREA)
  • Pathology (AREA)
  • Physiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Cardiology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Hematology (AREA)
  • Biophysics (AREA)
  • Veterinary Medicine (AREA)
  • Fluid Mechanics (AREA)
  • Vascular Medicine (AREA)
  • Radiology & Medical Imaging (AREA)
  • Signal Processing (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Measuring Volume Flow (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
DE88200536T 1987-03-25 1988-03-23 Verfahren zum Erzeugen eines Kernspinresonanzsignals von einer sich bewegenden Flüssigkeit. Expired - Fee Related DE3881432T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8700700A NL8700700A (nl) 1987-03-25 1987-03-25 Werkwijze voor het verkrijgen van een kernspinresonantiesignaal van een bewegend fluidum en inrichting voor het uitvoeren hiervan.

Publications (2)

Publication Number Publication Date
DE3881432D1 true DE3881432D1 (de) 1993-07-08
DE3881432T2 DE3881432T2 (de) 1993-12-23

Family

ID=19849760

Family Applications (1)

Application Number Title Priority Date Filing Date
DE88200536T Expired - Fee Related DE3881432T2 (de) 1987-03-25 1988-03-23 Verfahren zum Erzeugen eines Kernspinresonanzsignals von einer sich bewegenden Flüssigkeit.

Country Status (5)

Country Link
US (1) US4862080A (de)
EP (1) EP0287146B1 (de)
JP (1) JPS63266314A (de)
DE (1) DE3881432T2 (de)
NL (1) NL8700700A (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5190744A (en) * 1990-03-09 1993-03-02 Salutar Methods for detecting blood perfusion variations by magnetic resonance imaging
US6994841B1 (en) * 1990-03-09 2006-02-07 Kucharczyk And Moseley Partners Relating to magnetic resonance imaging
US5194809A (en) * 1990-06-30 1993-03-16 Lew Hyok S Nmr-scope
DE69230286T2 (de) * 1991-03-08 2000-02-24 Foxboro Nmr Ltd Apparat zur "in-line"-analyse von strömenden flüssigkeiten und festen materialien mittels magnetischer kernresonanz
US5309100A (en) * 1992-10-30 1994-05-03 Board Of Trustees Of The Leland Stanford Junior University Flow measurement of incompressible fluid using divergence-free constraint
JP4334049B2 (ja) * 1999-02-26 2009-09-16 株式会社東芝 Ｍｒｉ装置
WO2002005709A2 (en) * 2000-07-13 2002-01-24 Medi-Physics, Inc. Diagnostic procedures using 129xe spectroscopy characteristic chemical shift to detect pathology in vivo
DE102012013933B4 (de) * 2012-07-16 2023-12-07 Krohne Ag Verfahren und Vorrichtung zum Kalibrieren von kernmagnetischen Durchflussmessgeräten
DE102014010324B3 (de) * 2014-05-23 2015-02-05 Krohne Ag Kernmagnetisches Durchflussmessgerät und Verfahren zum Betreiben eines kernmagnetischen Durchflussmessgeräts

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5985651A (ja) * 1982-11-08 1984-05-17 株式会社東芝 診断用核磁気共鳴装置
US4587489A (en) * 1983-10-07 1986-05-06 General Electric Company Method for rapid acquisition of NMR data
GB8417290D0 (en) * 1984-07-06 1984-08-08 Picker Int Ltd Nuclear magnetic resonance method
IL74942A (en) * 1984-10-22 1988-11-30 Univ Leland Stanford Junior Flow measurement using nuclear magnetic resonance
US4654591A (en) * 1985-07-29 1987-03-31 Wisconsin Alumni Research Foundation NMR flow imaging using bi-phasic excitation field gradients

Also Published As

Publication number Publication date
DE3881432T2 (de) 1993-12-23
NL8700700A (nl) 1988-10-17
EP0287146B1 (de) 1993-06-02
EP0287146A2 (de) 1988-10-19
US4862080A (en) 1989-08-29
JPS63266314A (ja) 1988-11-02
EP0287146A3 (en) 1989-05-24

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PHILIPS ELECTRONICS N.V., EINDHOVEN, NL

8339 Ceased/non-payment of the annual fee