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

Software and hardware integration of a microprogrammable state machine for NMR imaging.

B K Stewart1, R G Pratt, S R Thomas

  • 1Department of Radiology, University of Cincinnati, Ohio 45267-0579.

Magnetic Resonance Imaging
|January 1, 1991
PubMed
Summary

A new magnetic resonance pulse programmer was developed using a microprogrammable state machine for advanced imaging protocols. This system offers high timing resolution and flexible hardware/software integration for research applications.

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

Evaluation of Simplified Leaf Inoculation Procedures for Identification of Quantitative Resistance to Sclerotinia trifoliorum in Alfalfa Seedlings.

Plant disease·2019
Same author

Pathogenicity of Macrophomina phaseolina to Mature Plant Tissues of Alfalfa and White Clover.

Plant disease·2019
Same author

Occurrence and Virulence of Bipolaris hawaiiensis on Bermudagrass (Cynodon dactylon) on Poultry Waste Application Sites in Mississippi.

Plant disease·2019
Same author

First Report of Infection of Bermudagrass by Bipolaris sorokiniana in the Southeastern United States.

Plant disease·2019
Same author

Johnsongrass, Yellow Foxtail, and Broadleaf Signalgrass as New Hosts for Six Species of Bipolaris, Curvularia, and Exserohilum Pathogenic to Bermudagrass.

Plant disease·2019
Same author

Frequency and Pathogenicity of Dematiaceous Hyphomycetes on Annual Ryegrass Overseeded on Bermudagrass in Mississippi.

Plant disease·2019

Area of Science:

  • Magnetic Resonance Imaging
  • Pulse Programming

Background:

  • Magnetic resonance (MR) imaging requires precise control of radiofrequency pulses and magnetic field gradients.
  • Existing pulse programmers may limit the flexibility and complexity of imaging protocols.

Purpose of the Study:

  • To integrate a commercial microprogrammable state machine as a magnetic resonance pulse programmer.
  • To enhance capabilities for active research imaging protocols.

Main Methods:

  • Hardware integration of a Tecmag PULSkit with a VAX 11/750 computer.
  • Utilized digital-to-analog converters (DACs) for gradient waveform generation, amplitude control, and shim voltages.
  • Developed a flexible software interface supporting microprogramming and a pulse-sequence compiler.

Related Experiment Videos

Main Results:

  • Achieved 100 nsec timing resolution with ten 16-bit loop counters.
  • Implemented individually addressable look-up tables for complex pulse sequencing.
  • Integrated hardware with multiple DACs per gradient channel and eddy current compensation.

Conclusions:

  • The integrated system provides advanced capabilities for magnetic resonance imaging research.
  • Offers a flexible and powerful platform for developing novel imaging protocols.
  • Demonstrates successful integration of commercial hardware with research-level software control.