A review of portal screen-film technology and five radiologists' evaluations of some existing products.
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.
Walker
M A
MA
Department of Large Animal Medicine and Surgery, Texas A&M University, College Station, Texas 77843-4475, USA.
Steinheimer
D N
DN
Weir
V A
VA
Homco
L D
LD
Green
R W
RW
Morris
E L
EL
Hess
M E
ME
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