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

A programmable eddy-current compensation system for MRI and localized spectroscopy

M E Fry1, S Pittard, I R Summers

  • 1Department of Physics, University of Exeter, United Kingdom.

Journal of Magnetic Resonance Imaging : JMRI
|March 1, 1997
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

Chemical capture of wild swamp buffalo (Bubalus bubalis) in tropical northern Australia using thiafentanil, etorphine and azaperone combinations.

Australian veterinary journal·2019
Same author

Disambiguating pharmacological mechanisms from placebo in neuropathic pain using functional neuroimaging.

British journal of anaesthesia·2018
Same author

An acoustic double fishnet using Helmholtz resonators.

The Journal of the Acoustical Society of America·2014
Same author

Functional MRI of the hypothalamic response to an oral glucose load.

Diabetologia·2012
Same author

A comparison of 31P magnetic resonance spectroscopy and microbubble-enhanced ultrasound for characterizing hepatitis c-related liver disease.

Journal of viral hepatitis·2011
Same author

Optimal combinations of ultrasound-based and serum markers of disease severity in patients with chronic hepatitis C.

Journal of viral hepatitis·2009

A new programmable preemphasis system compensates for eddy-currents in MRI gradient sets. This adaptable system offers rapid parameter changes and easy retrofitting to existing magnetic resonance imaging equipment.

Area of Science:

  • Medical Physics
  • Magnetic Resonance Imaging

Background:

  • Eddy currents in magnetic resonance imaging (MRI) gradient coils can degrade image quality.
  • Active screening is used in some systems to mitigate eddy currents, but limitations remain.

Purpose of the Study:

  • To develop and present a programmable preemphasis system for eddy-current compensation.
  • To enable rapid adjustment of preemphasis parameters for interchangeable gradient sets.
  • To facilitate easy integration of the system into existing MRI hardware.

Main Methods:

  • Development of a programmable preemphasis system.
  • Implementation of nonvolatile storage for preemphasis parameters.
  • Design for rapid parameter modification and system retrofitting.

Related Experiment Videos

Main Results:

  • Successful development of a programmable preemphasis system for eddy-current compensation.
  • Demonstration of nonvolatile parameter storage and rapid adjustability.
  • Validation of the system's applicability to gradient sets with and without active screening.

Conclusions:

  • The developed programmable preemphasis system effectively compensates for eddy currents in MRI gradient sets.
  • The system's adaptability and ease of retrofitting make it a valuable enhancement for existing MRI systems.