title: A review of portal screen-film technology and five radiologists' evaluations of some existing products.
abstract: Portal radiographs, radiographs made to document the accuracy of radiotherapy treatment fields, are typically of poor image contrast. Recently, a new portal film and screened-cassette system was marketed, the Kodak EC-L system, with the claim of greatly improved image contrast. This new EC-L system was tested on a canine cadaver exposed to Cobalt-60 teletherapy gamma radiation, and image quality was compared to earlier marketed Kodak portal film products. The EC-L system was found to provide portal images of improved contrast/quality.
authors.affiliation: Department of Large Animal Medicine and Surgery, Texas A&M University, College Station, Texas 77843-4475, USA.
authors.forename: M A
authors.initials: MA
authors.lastname: Walker
authors.forename: D N
authors.initials: DN
authors.lastname: Steinheimer
authors.forename: V A
authors.initials: VA
authors.lastname: Weir
authors.forename: L D
authors.initials: LD
authors.lastname: Homco
authors.forename: R W
authors.initials: RW
authors.lastname: Green
authors.forename: E L
authors.initials: EL
authors.lastname: Morris
authors.forename: M E
authors.initials: ME
authors.lastname: Hess
mesh_terms: D000818:Animals; D004285:Dogs; D011859:Radiography / Q000295:instrumentation / Q000662:veterinary*; D011878:Radiotherapy / Q000295:instrumentation / Q000662:veterinary*; D013679:Technology, Radiologic / Q000662:veterinary*; D014963:X-Ray Intensifying Screens