title: [Quantitative evaluation of film-screen combinations for x-ray diagnosis].
abstract: The properties of screen/film combinations for radiographs set a lower limit for the x-ray exposure of the patient and an upper limit for the quality of the x-ray picture. Sensitivity, slope and resolution of different screen/film combinations were determined using a measuring phantom which was developed in the PTB. For all screens used the measurements show the same relation between screen sensitivity and resolution. This allows quantitative evaluation of image quality. A classification scheme derived from these results facilitates the selection of screen/film combinations for practical use. In addition for quality assurance gross differences in material properties and conditions of film development can be detected with the aid of the measuring phantom.
authors.affiliation: Physikalisch-Technische Bundesanstalt (PTB), Institut Berlin, West, Federal Republic of Germany.
authors.forename: T
authors.initials: T
authors.lastname: Bronder
authors.forename: R
authors.initials: R
authors.lastname: Heinze-Assmann
mesh_terms: D005069:Evaluation Studies as Topic; D006801:Humans; D008961:Models, Structural; D011856:Radiographic Image Enhancement / Q000295:instrumentation; D014963:X-Ray Intensifying Screens
vernacular_title: Quantitative Bewertung von Film-Folien-Kombinationen für die Röntgendiagnostik.