Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Eddy current correction in volume-localized MR spectroscopy

C Lin1, R E Wendt, H J Evans

  • 1Department of Medicine, Baylor College of Medicine, Houston, TX 77030.

Journal of Magnetic Resonance Imaging : JMRI
|November 1, 1994
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Is poor nutrition masking the effects of depomedroxyprogesterone acetate on bones in adolescent users?

Singapore medical journal·2010
Same author

Effects of artificial gravity during bed rest on bone metabolism in humans.

Journal of applied physiology (Bethesda, Md. : 1985)·2008
Same author

Evidence for D0-D(0) mixing using the CDF II detector.

Physical review letters·2008
Same author

Measurement of Lifetime and Decay-Width Difference in B_{s};{0}-->J/psivarphi Decays.

Physical review letters·2008
Same author

Generating high-current monoenergetic proton beams by a circularly polarized laser pulse in the phase-stable acceleration regime.

Physical review letters·2008
Same author

Further results on delay-dependent stability criteria of neural networks with time-varying delays.

IEEE transactions on neural networks·2008
Same journal

Editorial for "A Quantitative Modification of VI-RADS for Bladder Cancer at the Ureteral Orifice: A Reader Study on MRI With Varying Experience Levels".

Journal of magnetic resonance imaging : JMRI·2026
Same journal

RF Noise Artifacts From a High Frequency Spinal Cord Stimulation System: A Retrospective Imaging Cohort With Illustrative Cases.

Journal of magnetic resonance imaging : JMRI·2026
Same journal

Editorial for "Association Between HIV Infection Duration and Left Ventricular Concentric Remodeling and Myocardial Fibrosis: A Cross-Sectional Study Using Cardiac MRI".

Journal of magnetic resonance imaging : JMRI·2026
Same journal

Editorial for "Effect of Visualized Respiratory Training on Patient Cooperation and Image Quality in Gadoxetic Acid Disodium-Enhanced Liver MRI: A Randomized Controlled Trial".

Journal of magnetic resonance imaging : JMRI·2026
Same journal

Editorial for "Association of Iron and Myelin Alterations in the Contralesional Dentate Nucleus and Thalamus With Functional Outcome in Acute Ischemic Stroke: A Susceptibility Source Separation Study".

Journal of magnetic resonance imaging : JMRI·2026
Same journal

Editorial for "Association Between Deep Gray Matter Iron Deposition Dysregulation and Cognitive Performance in Type 2 Diabetes Mellitus Patients: A Quantitative Susceptibility Mapping Study".

Journal of magnetic resonance imaging : JMRI·2026
See all related articles

Magnetic resonance spectroscopy quality is improved by new eddy current correction methods. These techniques reduce signal distortion, enabling detection of previously unmeasurable components.

Area of Science:

  • Magnetic Resonance Imaging
  • Spectroscopy
  • Signal Processing

Background:

  • Eddy currents from gradient switching degrade magnetic resonance spectroscopy (MRS) quality.
  • Postprocessing compensation using a single-frequency reference signal is a known technique.
  • Improved gradient systems can reduce eddy currents, but postprocessing offers an alternative.

Purpose of the Study:

  • To develop and evaluate novel methods for correcting eddy current-induced distortions in volume-localized MRS.
  • To improve the quantitative accuracy and detectability of metabolites in MRS data.
  • To address limitations of existing eddy current correction techniques.

Main Methods:

  • Modified acquisition of a single-frequency reference signal using T1 or T2 relaxation weighting to minimize digital filtering interference.
Keywords:
NASA Discipline MusculoskeletalNon-NASA Center

Related Experiment Videos

  • Development of a new eddy current correction method utilizing two free induction decays (FIDs) with opposite gradients, canceling phase errors by combining data.
  • Testing of both methods on a phantom to assess correction efficacy.

    • Main Results:

    • Relaxation-weighted reference signal acquisition maintained eddy current characteristics while reducing interference.
    • The novel two-FID method effectively canceled eddy current-induced phase errors.
    • Both methods successfully corrected eddy current distortions in phantom data.
    • Quantitative measurement of previously undetectable components, like the -CH=CH- group, became possible.

    Conclusions:

    • Modified reference signal acquisition and the two-FID method offer effective solutions for eddy current correction in MRS.
    • These advancements enhance the quality and quantitative capabilities of volume-localized magnetic resonance spectroscopy.
    • The developed techniques enable the detection and measurement of subtle metabolites, advancing biochemical analysis.