Skip directly to search Skip directly to A to Z list Skip directly to navigation Skip directly to site content Skip directly to page options
CDC Home

Application of the ILO International Classification of Radiographs of Pneumoconioses to Digital Chest Radiographic Images

July 2008
DHHS (NIOSH) Publication Number 2008-139
Cover page for document 2008-139

Go back to Workshop Index page.

A NIOSH Scientific Workshop

The following content has been adapted from a presentation given at the NIOSH Scientific Workshop: Application of the ILO International Classification of Radiographs of Pneumoconioses to Digital Chest Radiographic Images.

DISCLAIMER: The findings and conclusions in these proceedings are those of the authors and do not necessarily represent the official position of the National Institute for Occupational Safety and Health (NIOSH). Mention of any company or product does not constitute endorsement by NIOSH. In addition, citations to Web sites external to NIOSH do not constitute NIOSH endorsement of the sponsoring organizations or their programs or products. Furthermore, NIOSH is not responsible for the content of these Web sites.

Acquisition and QC for classification of digital chest radiographs Group discussion and outcome

3 phase approach

  • Immediate terms (<1 yr)
  • Medium term (1-3 yrs)
  • Long term (3-6 yrs)

Immediate term (<1 yr) Approval elements

  • Acceptance criteria for equipment/facility
  • IQ consistency as the key goal
  • ACR guidelines as a starting point
  • Equipment attributes (eg, pixel size, bit- depth, baseline performance, resolution, MTF/NPS/DQE/eDQE, speed, QC utilities, DICOM compliance, …)

Immediate term (<1 yr) Approval elements

  • QA process in the facility incorporating specific attributes
  • QA process oversight (physicist oversight?)
  • Documentation of IQ in an standardized fashion (via phantoms) –recommended but required within a longer period of time
  • TG10 type testing performance

Immediate term (<1 yr) Approval elements

  • Acqusition protocol requirements
    • Scatter reduction: Grid (moving/stat), air gap, slot-scan, photon-counting
    • Beam quality (kVp, filter)
    • kW rating of generators
    • Providing an exposure index (TG116)
    • Exposure monitoring over time
    • AEC and/or exposure chart
    • AEC testing

Immediate term (<1 yr) Approval elements

  • Specific file format (processed and “for processing” as available, required for new equipment)
  • QC guidelines
  • Ongoing demonstration of quality
  • Beta testing of the approach

Medium term (1-3 yrs)

  • A more representative phantom with automated analysis and objective measures (MTF, NPS, eDQE, processing artifacts, imaging chain issues)
  • Exposure requirements (based on eDQE)
  • Integrated QC utility per image

Long term (3-6 yrs)

  • Automated disease classification
  • Automated IQ assessment based on image data
 
Contact Us:
  • Page last reviewed: June 6, 2014
  • Page last updated: June 6, 2014
USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Rd. Atlanta, GA 30333, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC-INFO