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 improved method for flat-field correction of flat panel x-ray detector.

Alexander L C Kwan1, J Anthony Seibert, John M Boone

  • 1Department of Radiology, U. C. Davis Medical Center, X-ray Imaging Laboratory, 4701 X Street, Sacramento, California 95817, USA.

Medical Physics
|March 15, 2006
PubMed
Summary

Variable flat-field correction effectively addresses nonlinear exposure response in cesium iodide detectors. This method significantly reduces image nonuniformity compared to fixed correction techniques across various X-ray spectra.

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

The end of browsing, continuous publication, and title scrutiny.

Medical physics·2026
Same author

Assessing variations in 3D image quality in chest CT across sites and scanners.

Medical physics·2026
Same author

Multi-x-ray source array for stationary tomosynthesis or multi-cone angle cone beam CT.

Proceedings of SPIE--the International Society for Optical Engineering·2026
Same author

Incorporating Tissue Composition Information in Total-Body PET Metabolic Quantification of Bone Marrow through Dual-Energy CT.

ArXiv·2026
Same author

Hybrid simulation of breast CT for assessing microcalcification detectability.

Journal of medical imaging (Bellingham, Wash.)·2025
Same author

Medical Physics is transitioning to double blinded review.

Medical physics·2025

Area of Science:

  • Medical Physics
  • Radiological Imaging Technology
  • Detector Science

Background:

  • Cesium iodide flat panel detectors are crucial in modern medical imaging.
  • These detectors can exhibit nonlinear exposure response, impacting image quality.
  • Accurate flat-field correction is essential for quantitative imaging.

Purpose of the Study:

  • To evaluate the efficacy of different flat-field correction techniques for cesium iodide detectors.
  • To quantify the improvement in image uniformity using variable flat-field correction.
  • To assess the performance across different X-ray energy spectra.

Main Methods:

  • Investigated fixed and variable flat-field correction methods.
  • Employed polynomial fitting for the variable correction technique.

Related Experiment Videos

  • Assessed correction performance using the averaged normalized variation factor.
  • Tested with 60 kVp and 95 kVp X-ray spectra.

    • Main Results:

    • Variable flat-field correction significantly reduced image nonuniformity.
    • Averaged normalized variation factor decreased from 30.76 to 4.13 (60 kVp) and 16.42 to 3.97 (95 kVp).
    • Fourth-order polynomial fit demonstrated excellent correction across the exposure range.

    Conclusions:

    • Variable flat-field correction with polynomial fitting is a superior method for cesium iodide detectors.
    • This technique effectively corrects for nonlinear responses, enhancing image quality.
    • The findings support the adoption of advanced correction methods in digital radiography.