GB201017127D0 - Nuclear magnetic resonance measurement techniques in non-uniform fields - Google Patents

Nuclear magnetic resonance measurement techniques in non-uniform fields

Info

Publication number
GB201017127D0
GB201017127D0 GBGB1017127.0A GB201017127A GB201017127D0 GB 201017127 D0 GB201017127 D0 GB 201017127D0 GB 201017127 A GB201017127 A GB 201017127A GB 201017127 D0 GB201017127 D0 GB 201017127D0
Authority
GB
United Kingdom
Prior art keywords
magnetic resonance
nuclear magnetic
measurement techniques
resonance measurement
uniform fields
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.)
Granted
Application number
GBGB1017127.0A
Other versions
GB2471607B (en
GB2471607A (en
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.)
Schlumberger Holdings Ltd
Original Assignee
Schlumberger Holdings Ltd
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
Priority claimed from US11/496,557 external-priority patent/US7622919B2/en
Application filed by Schlumberger Holdings Ltd filed Critical Schlumberger Holdings Ltd
Publication of GB201017127D0 publication Critical patent/GB201017127D0/en
Publication of GB2471607A publication Critical patent/GB2471607A/en
Application granted granted Critical
Publication of GB2471607B publication Critical patent/GB2471607B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G01R33/5615—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE]
    • G01R33/5617—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE] using RF refocusing, e.g. RARE
    • 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
    • G01R33/5615—Echo train techniques involving acquiring plural, differently encoded, echo signals after one RF excitation, e.g. using gradient refocusing in echo planar imaging [EPI], RF refocusing in rapid acquisition with relaxation enhancement [RARE] or using both RF and gradient refocusing in gradient and spin echo imaging [GRASE]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
    • G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
    • G01N24/081—Making measurements of geologic samples, e.g. measurements of moisture, pH, porosity, permeability, tortuosity or viscosity
    • 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]
    • G01R33/448—Relaxometry, i.e. quantification of relaxation times or spin density
    • 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
    • G01R33/56341—Diffusion imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/18—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
    • G01V3/32—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with electron or nuclear magnetic resonance
    • 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]
    • G01R33/445—MR involving a non-standard magnetic field B0, e.g. of low magnitude as in the earth's magnetic field or in nanoTesla spectroscopy, comprising a polarizing magnetic field for pre-polarisation, B0 with a temporal variation of its magnitude or direction such as field cycling of B0 or rotation of the direction of B0, or spatially inhomogeneous B0 like in fringe-field MR or in stray-field imaging

Landscapes

  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Signal Processing (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Remote Sensing (AREA)
  • Geophysics (AREA)
  • Vascular Medicine (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
GB1017127A 2006-07-31 2007-07-19 Nuclear magnetic resonance measurement techniques in non-uniform fields Expired - Fee Related GB2471607B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/496,557 US7622919B2 (en) 2006-07-31 2006-07-31 Nuclear magnetic resonance measurement techniques in non-uniform fields
GB0714020A GB2440628B (en) 2006-07-31 2007-07-19 Nuclear magnetic resonance measurement techinques in non-uniform fields

Publications (3)

Publication Number Publication Date
GB201017127D0 true GB201017127D0 (en) 2010-11-24
GB2471607A GB2471607A (en) 2011-01-05
GB2471607B GB2471607B (en) 2011-06-22

Family

ID=43332209

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1017127A Expired - Fee Related GB2471607B (en) 2006-07-31 2007-07-19 Nuclear magnetic resonance measurement techniques in non-uniform fields

Country Status (1)

Country Link
GB (1) GB2471607B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114167331A (en) * 2021-12-07 2022-03-11 无锡鸣石峻致医疗科技有限公司 Method and equipment for measuring longitudinal relaxation time under non-uniform magnetic field

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112798635B (en) * 2020-12-31 2024-02-20 东南大学 Nuclear magnetic resonance signal pulse method for compensating non-uniformity of radio frequency magnetic field

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114167331A (en) * 2021-12-07 2022-03-11 无锡鸣石峻致医疗科技有限公司 Method and equipment for measuring longitudinal relaxation time under non-uniform magnetic field

Also Published As

Publication number Publication date
GB2471607B (en) 2011-06-22
GB2471607A (en) 2011-01-05

Similar Documents

Publication Publication Date Title
GB2440628B (en) Nuclear magnetic resonance measurement techinques in non-uniform fields
GB2445247B (en) Nuclear magnetic resonance module
EP1991887A4 (en) High field magnetic resonance
EP1875862A4 (en) Inspection equipment employing magnetic resonance
EP2320224A4 (en) Magnetic measuring method and device
EP1911400A4 (en) Magnetic resonance imaging device
DE602006002073D1 (en) Superconducting magnet for magnetic resonance imaging
GB2460320B (en) Method for determining the spatial distribution of magnetic resonance signals with use of local spatially encoding magnetic fields
EP2050390A4 (en) Magnetic field generator and nuclear magnetic resonance device provided with this magnetic field generator
EP1808127A4 (en) Nuclear magnetic resonance imaging device
EP2070475A4 (en) Magnetic resonance imaging device
GB2456968B (en) Magnets for use in magnetic resonance imaging
EP2357485A4 (en) Transmit-receive switching circuit for nuclear magnetic resonance device and nuclear magnetic resonance device
GB2489378B (en) Open-bore magnet for use in magnetic resonance imaging
GB0602229D0 (en) Electrical potential sensor for use in the detection of nuclear magnetic resonance signals
PL2043697T3 (en) Erythrocytes containing contrasting agents for magnetic resonance imaging
LT2512524T (en) Manganese chelates and their use as contrast agents in magnetic resonance imaging (mri)
GB0906149D0 (en) Nuclear magnetic resonance imaging
EP2095145A4 (en) Cold-normal metal and hts nmr probe coils with electric field shields
GB2464151B (en) Gradiometer for measuring gravitational and magnetic field gradients with improved sensor
GB2445042B (en) Downhole nuclear magnetic resonance measurement
EP2351520A4 (en) Antenna device and magnetic resonance imaging device
GB0804422D0 (en) An agent for transporting nuclear spin order and for magnetic resonance imaging
GB0700999D0 (en) Magnetic resonance imaging
GB2471607B (en) Nuclear magnetic resonance measurement techniques in non-uniform fields

Legal Events

Date Code Title Description
R108 Alteration of time limits (patents rules 1995)

Free format text: EXTENSION ALLOWED

Effective date: 20110401

Free format text: EXTENSION APPLICATION

Effective date: 20110330

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20190719