Special Articles: PDF OnlyA Comparative Evaluation of Rare Earth Screen-Film Systems Free-Response Operating Characteristic Analysis and Anatomic Criteria AnalysisFEARON, THOMAS PHD*; VUCICH, JAMES MS†; McSWEENEY, WILLIAM J. MD*; POTTER, BARRY M. MD*; BRALLIER, DAVID R. MD§;; McILHENNY, JOAN MD§; TEPPER, JUDITH MD‖; MARKLE, BRUCE M. MD*Author Information From the *Departments of Radiology, Children's Hospital National Medical Center, Washington, DC, and Radiology and Child Health and Development, George Washington University School of Medicine, Washington, DC, †Radiology, National Institutes of Health, Bethesda, Maryland, †Fairfax Hospital, Falls Church, Virginia, §University of Virginia Hospital, Charlottesville, Virginia, and ‖ Wiesbaden, Germany. Investigative Radiology: September 1986 - Volume 21 - Issue 9 - p 734-742 Buy Abstract Diagnostic accuracy was evaluated in a signal detection experiment that used low-contrast acute lesions in a living dog model. At the high levels of certainty normally used by radiologists, rare earth screen-film systems provided accuracy comparable to that of a reference calcium tungstate screen-film system. Additionally subjective image quality evaluation for a given imaging task (clinical pediatric anterior-posterior chest films) based on visualization of anatomic landmarks and physical parameters has been conducted for several rare earth and one calcium tungstate screen-film system. The correspondence of subjective physical ranking with physical and psychophysical measurements was investigated. Evaluating the visualization of anatomic parameters can provide a clear and objective distinction among systems with comparable physical and psychophysical properties. © Lippincott-Raven Publishers.