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

An "openable," high-strength gradient set for orthopedic MRI.

S Crozier1, W U Roffmann, K Luescher

  • 1Centre for Magnetic Resonance, University of Queensland, Brisbane, Queensland, 4072, Australia.

Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|July 2, 1999
PubMed
Summary

A new, openable orthopedic MRI gradient set was developed for injured joints. This novel design improves imaging accessibility and performance, confirmed by prototype testing.

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

Medical demography at stroke centers: Current situation in France.

Revue neurologique·2023
Same author

Analytic and numerical solutions to the seismic wave equation in continuous media.

Proceedings. Mathematical, physical, and engineering sciences·2020
Same author

Outcomes of Acute Stroke Patients Requiring Mechanical Ventilation: Study Protocol for the SPICE Multicenter Prospective Observational Study.

Neurocritical care·2020
Same author

Scientific Business Abstracts of the 113th Annual Meeting of the Association of Physicians of Great Britain and Ireland.

QJM : monthly journal of the Association of Physicians·2019
Same author

Impact of maternal body mass index and gestational weight gain on pregnancy complications: an individual participant data meta-analysis of European, North American and Australian cohorts.

BJOG : an international journal of obstetrics and gynaecology·2019
Same author

Imaging performance of a dedicated radiation transparent RF coil on a 1.0 Tesla inline MRI-linac.

Physics in medicine and biology·2018

Area of Science:

  • Medical Physics
  • Biomedical Engineering
  • Magnetic Resonance Imaging

Background:

  • Orthopedic Magnetic Resonance Imaging (MRI) requires specialized hardware for imaging joint injuries.
  • Existing MRI gradient systems can be restrictive for patient positioning and accessibility.

Purpose of the Study:

  • To design and construct a novel, openable three-axis gradient set and RF resonator for orthopedic MRI.
  • To address the design challenges of openable gradient coils, particularly the split longitudinal coil.

Main Methods:

  • Utilized simulated annealing to minimize magnetic field spherical harmonics for optimal coil design.
  • Developed a new fast algorithm to determine magnetic field spherical harmonics from multiturn wire arcs.
  • Constructed and tested a prototype gradient set in a 2-T clinical research system.

Related Experiment Videos

Main Results:

  • The prototype gradient set achieved a performance of 12 mT/m/A with a 12 cm linear region.
  • Demonstrated a fast switching time of 100 microseconds, closely matching theoretical predictions.
  • Preliminary MRI images from the prototype set were successfully acquired.

Conclusions:

  • The novel openable gradient set design is feasible and performs as predicted.
  • This technology offers improved accessibility for orthopedic MRI of injured joints.
  • The developed algorithm aids in the efficient design of split longitudinal gradient coils.