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Chapter 12

SWGTC-R/T-Chapter 12-Wallace-Radiographic Film and Development

QuestionAnswer
Radiographic film is composed of two main parts, the __________and __________. base and emulsion
The base of the film is made of ____________that is .007 inches thick. polyester
Able to keep its size and shape under all processing conditions. dimensional stability
Added to the base to absorb light from the view box and enhance radiographic contrast. blue tint
Gelatin substance spread on the base emulsion
The emulsion consists of ______________. silver bromide suspended in a gelatin
Emulsion spread on just one side of the base. single-emulsion film
Emulsion spread on both sides of the base. double-emulsion film
One layer of emulsion is ________ thick. .0005 inch
Gelatin property that suspends crystals. colloid
List the layers of a double-emulsion film from front to back. supercoating, emulsion, adhesive, base, adhesive, emulsion, supercoating
Most common type of film. screen film
Screen film is sensitive to both _________ and __________. light and x-rays
Screen film is used with _____________ screen. intensifying
Non-screen film is more sensitive to _______ than to ___________, causing the patient dose to be ________. x-rays, light, greater
Mammography uses ___________ emulsion film. single
__________ film is used to view the arteries better in Special Procedures. subtraction film
Film is developed in about __________ seconds in an automatic processor. 45-90
Inside the processor, the film passes through a __________chemical, a __________ chemical, the _____ and a _______. developer, fixer, wash, dryer
The developer chemical is an __________ solution. alkaline
The section of the processor where the exposed silver bromide crystals are reduced to metallic silver. developer
The image on the film after exposure and before development. latent
Excess density fog
___________ temperature affects density and contrast. developer
The _________ removes the unexposed and underdeveloped silver bromide crystals. fixer
When developer temp increases and density increases, fog _______. increases
When developer temp and density decrease, fog ___________. remains the same.
Film travels between 2 sets of rollers that are ___________ to each other. offset
_________rollers are at the bottom of each section and ________ rollers are at the top of each section. turnaround, crossover
The rollers have metal guides called _________ that help the film make the turns. guide shoes
What does the characteristic curve tell a radiographer? info about a film's speed, contrast, and exposure latitude, and enables monitoring of the function of the automatic processor
stepwedge penetrometer
The toe of the characteristic curve is the area of _____________. underexposure
The _______ is the area of the characteristic curve where it begins to turn upward. threshold
The shoulder is at the top of the curve and is the area of ___________. overexposure
Density differences. Film contrast
Created by: kristinalyn