title: [The digital reprocessing of underexposed x-rays. Studies with a fluorescent light scanner].
abstract: Incorrect exposure of conventional radiographs frequently leads to repetition of the examination and thereby to increased radiation exposure for the patient. Underexposed films of an Alderson-Rando phantom, an ankle joint and a patella were digitised by means of an inexpensive fluorescent light scanner, and subsequent image manipulation improved quality so as to make the image diagnostically adequate. For the demonstration of markedly underexposed structures digitalisation with subsequent contrast enhancement was used. Well exposed structures are best evaluated in contrast enhanced transmitted light. Our results suggest it should be possible to reduce the number of repeat exposures and thereby to limit radiation exposure.
authors.affiliation: Strahlenklinik und Poliklinik, Universitätsklinikum Rudolf Virchow, Freie Universität Berlin.
authors.forename: N
authors.initials: N
authors.lastname: Hidajat
authors.forename: R J
authors.initials: RJ
authors.lastname: Schröder
authors.forename: B
authors.initials: B
authors.lastname: Bergh
authors.forename: M
authors.initials: M
authors.lastname: Cordes
authors.forename: R
authors.initials: R
authors.lastname: Felix
mesh_terms: D000843:Ankle Joint / Q000000981:diagnostic imaging; D006801:Humans; D008838:Microcomputers; D008961:Models, Structural; D010329:Patella / Q000000981:diagnostic imaging; D011856:Radiographic Image Enhancement / Q000295:instrumentation / Q000379:methods*; D018709:Statistics, Nonparametric; D014963:X-Ray Intensifying Screens
vernacular_title: Digitale Nachbearbeitung von unterbelichteten Röntgenaufnahmen. Untersuchungen mit einem Fluoreszenzlichtscanner.