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VET 246 Week 1

Imaging on film

QuestionAnswer
Film-based image receptor 3 components: - Film - Intensifying screens
X-ray system 3 components: - X-ray generator & transformer - X-ray tube - Image receptor (Film, digital plate, or CR cassette)
Film should never be exposed to ____ until it has been correctly exposed to x-rays and processed in a chemical solution. light
Earliest image receivers were made up of ____ glass
Film base Made of Mylar Invented by Dupont in the 1950's
Single-Emulsion Film Light-sensitive emulsion coats one side of the film base
Double-Emulsion Film Light-sensitive emulsion coats both side of the film base Used in general radiography Dull on both sides
There is an _____ layer between the base and emulsion. adhesive
Supercoat Hard gelatin layer superficially
Antihalation layer is ____; side with emulsion is ____ Shiny; dull
Film emulsion Contains silver halide Made of very high quality gelatin
___ of light and x-rays cause silver halide to interact with sensitivity specks to form the latent image. Photons
Intensifying screen converts x-rays into light may produce green or blue light
Blue receiving film is physically ____. Green
Green receiving film is physically ____. violet
X-ray cassette Holds a sheet of film to protect it during the imaging process Was first introduced in 1930
The ______ determines the color of the visible light. phosphor
Calcium tungstate phosphors Requires blue light-receiving film
Rare earth phosphor Requires green light-receiving film
Rare earth phosphors produce ____ times the amount of light as the calcium tungstate phosphors 3-4
Film boxes and cassettes should always be stored ______. upright
Cassettes should always be _________ and ready to be used loaded with film
Created by: Acraft02
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