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

Grid line artifact formation: A comprehensive theory.

David M Gauntt1, Gary T Barnes

  • 1X-Ray Imaging Innovations, Birmingham, Alabama 35209, USA.

Medical Physics
|July 29, 2006
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

Measurement of CT radiation beam width with a pencil ionization chamber and radiopaque mask.

Journal of applied clinical medical physics·2025
Same author

LITE-1 mediates behavioral responses to X-rays in <i>Caenorhabditis elegans</i>.

Frontiers in neuroscience·2023
Same author

Direct measurement of CTDI<sub>w</sub> on helical CT scans.

Journal of applied clinical medical physics·2022
Same author

Radiological Quantities and Units: A Source of Confusion.

Radiation research·2020
Same author

A suggested method for setting up GSI profiles on the GE Revolution CT scanner.

Journal of applied clinical medical physics·2019
Same author

Recognizing and Minimizing Artifacts at CT, MRI, US, and Molecular Imaging.

Radiographics : a review publication of the Radiological Society of North America, Inc·2019

A new theoretical framework helps estimate and suppress grid line artifacts in medical imaging. By optimizing grid movement and x-ray exposure, these artifacts can be effectively eliminated, enabling more efficient imaging systems.

Area of Science:

  • Medical Physics
  • Radiologic Technology
  • Imaging Science

Background:

  • Linear focused grids are essential for scatter reduction in radiography and mammography.
  • Grid lines can become visible artifacts if the grid remains stationary during X-ray exposure.
  • Moving the grid during exposure is a common technique to blur these artifacts.

Purpose of the Study:

  • To develop a theoretical framework for quantifying grid line artifact magnitude.
  • To evaluate various artifact suppression techniques, including novel methods.
  • To assess the impact of grid parameters and X-ray output variations on artifacts.

Main Methods:

  • A theoretical framework was developed using grid pitch, septum thickness, and exposure time as parameters.
  • Grid velocity variations (constant, decreasing) and X-ray tube output fluctuations (kV ripple) were modeled.

Related Experiment Videos

  • Artifacts were evaluated for stationary grids, grids moving at constant and decreasing velocities, and with kV ripple.
  • A novel technique involving a 'feathered' exposure waveform with constant grid velocity was analyzed.

    • Main Results:

    • The framework allows estimation of grid line artifact magnitude under diverse conditions.
    • Grid movement with kV ripple significantly impacts artifact levels.
    • A 'feathered' exposure waveform, combined with short grid travel distance, can effectively eliminate grid line artifacts.
    • This suppression method allows for the design of efficient, compact, coarse-density grid systems.

    Conclusions:

    • The developed theoretical framework provides a robust method for analyzing grid line artifacts.
    • Optimizing grid motion and X-ray exposure waveform is crucial for artifact suppression.
    • The 'feathered' exposure technique offers a promising solution for eliminating grid line artifacts, enabling advancements in grid design.