DANB Radiology Exam with correct |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answers
What is the base of dental film composed of? - correct answer✔✔blue tinted polyester
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
acetate
What is the emulsion composed of? - correct answer✔✔gelatin and silver halide crystals
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What determines the speed of dental films? - correct answer✔✔size of crystals, thickness of
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
emulsion, radiosensitive dyes |||\\\ |||\\\
What is the purpose of the lead foil? - correct answer✔✔absorb scatter radiation and prevent
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
fogging
How does film speed correlate with definition and detail? - correct answer✔✔faster film =
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
lower definition and detail
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What speed films are most commonly used? - correct answer✔✔D, E, F
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
size film used for PA's on small children - correct answer✔✔#0
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
size film used for BW on adults when only one film is taken on each side - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answer✔✔#3
size film used for anterior PA's for patients with narrow arches - correct answer✔✔#1
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
,size film used for PA's on adults - correct answer✔✔#2
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size film used for BW on adults - correct answer✔✔#2
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
size film used for occlusals on adults - correct answer✔✔#4
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What is the purpose of the embossed dot - correct answer✔✔to distinguish b/w patient's
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
right and left side |||\\\ |||\\\ |||\\\
What is the latent image - correct answer✔✔invisible image (remains like this until film is
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
processed)
What happens in the developer - correct answer✔✔reduces the exposed silver halide crystals
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
to black metallic silver
|||\\\ |||\\\ |||\\\
What happens in the fixer - correct answer✔✔removes the unexposed silver halide crystals
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
how long does film stay in the developer - correct answer✔✔5 min
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
how long are films fixed - correct answer✔✔10 min (dbl the development time)
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
how long does the first rinse last - correct answer✔✔20 seconds
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
how long is the final rinse - correct answer✔✔20 min
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
what is the optimum processing temp. - correct answer✔✔68 degrees F
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
, when can the films be exposed to white light - correct answer✔✔after 2-3 min of fixing if
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
needed
what causes film fogging - correct answer✔✔-old or contaminated processing solutions
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
-exposure to chemical fumes |||\\\ |||\\\ |||\\\
-faulty safelight |||\\\
-scatter radiation |||\\\
what would cause a film to be too light - correct answer✔✔-underexposure
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
-underdevelopment
-depleted developer solution |||\\\ |||\\\
-excessive fixation (takes all crystals off) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
what would cause a film to be too dark - correct answer✔✔-overexposure
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
-overdevelopment
-developer is too strong |||\\\ |||\\\ |||\\\
-not enough fixation
|||\\\ |||\\\
-exposure to white light |||\\\ |||\\\ |||\\\
-improper safelighting |||\\\
What causes a HERRINGBONE effect - correct answer✔✔film placed backwards
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
what would happen to a film that is placed in the fixer prior to development - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answer✔✔blank or clear |||\\\ |||\\\
(takes all of the crystals off)
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answers
What is the base of dental film composed of? - correct answer✔✔blue tinted polyester
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
acetate
What is the emulsion composed of? - correct answer✔✔gelatin and silver halide crystals
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What determines the speed of dental films? - correct answer✔✔size of crystals, thickness of
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
emulsion, radiosensitive dyes |||\\\ |||\\\
What is the purpose of the lead foil? - correct answer✔✔absorb scatter radiation and prevent
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
fogging
How does film speed correlate with definition and detail? - correct answer✔✔faster film =
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
lower definition and detail
|||\\\ |||\\\ |||\\\
What speed films are most commonly used? - correct answer✔✔D, E, F
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
size film used for PA's on small children - correct answer✔✔#0
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
size film used for BW on adults when only one film is taken on each side - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answer✔✔#3
size film used for anterior PA's for patients with narrow arches - correct answer✔✔#1
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
,size film used for PA's on adults - correct answer✔✔#2
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
size film used for BW on adults - correct answer✔✔#2
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
size film used for occlusals on adults - correct answer✔✔#4
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
What is the purpose of the embossed dot - correct answer✔✔to distinguish b/w patient's
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
right and left side |||\\\ |||\\\ |||\\\
What is the latent image - correct answer✔✔invisible image (remains like this until film is
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
processed)
What happens in the developer - correct answer✔✔reduces the exposed silver halide crystals
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
to black metallic silver
|||\\\ |||\\\ |||\\\
What happens in the fixer - correct answer✔✔removes the unexposed silver halide crystals
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
how long does film stay in the developer - correct answer✔✔5 min
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
how long are films fixed - correct answer✔✔10 min (dbl the development time)
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
how long does the first rinse last - correct answer✔✔20 seconds
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
how long is the final rinse - correct answer✔✔20 min
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
what is the optimum processing temp. - correct answer✔✔68 degrees F
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
, when can the films be exposed to white light - correct answer✔✔after 2-3 min of fixing if
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
needed
what causes film fogging - correct answer✔✔-old or contaminated processing solutions
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
-exposure to chemical fumes |||\\\ |||\\\ |||\\\
-faulty safelight |||\\\
-scatter radiation |||\\\
what would cause a film to be too light - correct answer✔✔-underexposure
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
-underdevelopment
-depleted developer solution |||\\\ |||\\\
-excessive fixation (takes all crystals off) |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
what would cause a film to be too dark - correct answer✔✔-overexposure
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
-overdevelopment
-developer is too strong |||\\\ |||\\\ |||\\\
-not enough fixation
|||\\\ |||\\\
-exposure to white light |||\\\ |||\\\ |||\\\
-improper safelighting |||\\\
What causes a HERRINGBONE effect - correct answer✔✔film placed backwards
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
what would happen to a film that is placed in the fixer prior to development - correct
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\ |||\\\
answer✔✔blank or clear |||\\\ |||\\\
(takes all of the crystals off)
|||\\\ |||\\\ |||\\\ |||\\\ |||\\\
