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Comparison of the low‐contrast detectability of a screen‐film system and third generation computed radiography
Author(s) -
Cook L. T.,
Insana M. F.,
McFadden M. A.,
Hall T. J.,
Cox G. G.
Publication year - 1994
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.597172
Subject(s) - computed radiography , imaging phantom , radiography , contrast (vision) , observer (physics) , nuclear medicine , variance (accounting) , digital radiography , medical imaging , mathematics , medicine , computer vision , computer science , radiology , image quality , physics , image (mathematics) , accounting , quantum mechanics , business
Contrast‐detail (CD) analysis was used to compare the low‐contrast detectability of computed radiography (CR) and screen‐film (SF) as applied to the task of adult chest radiography. A phantom was constructed and imaged using the same exposure factors throughout all experiments. Within‐observer variance, between‐observer variance, and image sample variance were calculated and used to estimate the standard error for each experiment. The results of these CD experiments agreed with the predictions of the Rose model. Observers performed equally well for low‐contrast target detection using CR and SF.