Performance evaluation of computed radiography systems

Ehsan Samei, J Anthony Seibert, Charles E. Willis, Michael J. Flynn, Eugene Mah, Kevin L. Junck

Research output: Contribution to journalArticlepeer-review

60 Scopus citations


Recommended methods to test the performance of computed radiography (CR) digital radiographic systems have been recently developed by the AAPM Task Group No. 10. Included are tests for dark noise, uniformity, exposure response, laser beam function, spatial resolution, low-contrast resolution, spatial accuracy, erasure thoroughness, and throughput. The recommendations may be used for acceptance testing of new CR devices as well as routine performance evaluation checks of devices in clinical use. The purpose of this short communication is to provide a tabular summary of the tests recommended by the AAPM Task Group, delineate the technical aspects of the tests, suggest quantitative measures of the performance results, and recommend uniform quantitative criteria for the satisfactory performance of CR devices. The applicability of the acceptance criteria is verified by tests performed on CR systems in clinical use at five different institutions. This paper further clarifies the recommendations with respect to the beam filtration to be used for exposure calibration of the system, and the calibration of automatic exposure control systems.

Original languageEnglish (US)
Pages (from-to)361-371
Number of pages11
JournalMedical Physics
Issue number3
StatePublished - 2001


  • Acceptance testing
  • Automatic exposure control
  • Computed radiography
  • Photostimulable phosphor radiography
  • Quality control

ASJC Scopus subject areas

  • Biophysics


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