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

Rapid, fully automatic, arbitrary-volume in vivo shimming.

P Webb1, A Macovski

  • 1Department of Electrical Engineering, 120 Durand, Stanford University, California 94305.

Magnetic Resonance in Medicine
|July 1, 1991
PubMed
Summary

This study introduces a fast, automated method for magnetic field shimming in MRI. The new technique significantly reduces shimming time, improving image quality for MR spectroscopy and imaging.

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

Neuroprotection of low dose carbon monoxide in Parkinson's disease models commensurate with the reduced risk of Parkinson's among smokers.

bioRxiv : the preprint server for biology·2023
Same author

P-FLUX: A phosphorus budget dataset spanning diverse agricultural production systems in the United States and Canada.

Journal of environmental quality·2022
Same author

COVID-19: using chest CT of major trauma patients to monitor and evaluate the second wave in London and the development of routine monitoring in practice.

Clinical radiology·2022
Same author

3,5-diiodothyronine (3,5-T2) reduces blood glucose independently of insulin sensitization in obese mice.

Acta physiologica (Oxford, England)·2016
Same author

Sustained zero-order delivery of GC-1 from a nanochannel membrane device alleviates metabolic syndrome.

International journal of obesity (2005)·2016
Same author

Making movies.

Nursing standard (Royal College of Nursing (Great Britain) : 1987)·2016

Area of Science:

  • Magnetic Resonance Imaging (MRI)
  • Medical Physics
  • Biomedical Engineering

Background:

  • Optimal magnetic field homogeneity is crucial for Magnetic Resonance (MR) spectroscopy and imaging.
  • Traditional shimming processes can be time-consuming and operator-dependent.
  • Accurate field mapping is essential for effective magnet shimming.

Purpose of the Study:

  • To develop a pulse sequence for rapid and precise 3D magnetic field mapping in vivo.
  • To create a data analysis package for calculating optimal shim currents.
  • To enable automated, operator-independent shimming of selected volumes.

Main Methods:

  • Development of a novel pulse sequence for fast, in vivo 3D field mapping.
  • Implementation of a data analysis package to compute shim currents.

Related Experiment Videos

  • Integration with shim power supplies for automatic current updates.

    • Main Results:

    • Demonstrated fast and accurate measurement of 3D field maps in vivo.
    • Achieved optimal shimming of arbitrary volumes with automated current adjustments.
    • Reduced typical in vivo shimming time to under 5 minutes.
    • Presented performance analysis, phantom, and in vivo results validating the method.

    Conclusions:

    • The developed method provides a fast, accurate, and automated solution for magnet shimming in MRI.
    • This automated shimming significantly improves efficiency and reduces operator burden.
    • The technique is expected to enhance the quality and reliability of MR spectroscopy and imaging.