An examination of errors in characteristic curve measurements of radiographic screen/film systems

Academic Article


  • The precision and accuracy achieved in the measurement of characteristic curves for radiographic screen/film systems is quantitatively investigated for three techniques: inverse square, kVp bootstrap, and step wedge bootstrap. Precision of all techniques is generally better than ±1.5% while the agreement among all intensity scale techniques is better than 2% over the useful exposure latitude. However, the accuracy of the sensitometry will depend on several factors, including linearity and energy dependence of the calibration instrument, that may introduce larger errors. Comparisons of time scale and intensity scale methods are made and a means of measuring reciprocity law failure is demonstrated. © 1981, American Institute of Physics for the National Institute of Standards and Technology. All rights reserved.
  • Authors

    Published In

  • Medical Physics  Journal
  • Medical Physics  Journal
  • Digital Object Identifier (doi)

    Pubmed Id

  • 11843818
  • Author List

  • Wagner LK; Barnes GT; Bencomo JA; Haus AG
  • Start Page

  • 365
  • End Page

  • 369
  • Volume

  • 10
  • Issue

  • 3