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What is the Archiving process?
A] uses activators in the fixer
B] uses a clearing agent that bonds with unexposed silver halides
C] prepares the film for long-term storage as medical record
C] prepares the film for long-term storage as medical record
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What is the function of the transport system
A] Constant tension to move film through each tank
B] removes excess water
C] tranports agents towards crystals
A] Constant tension to move film through each tank
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What is the function of the dryer system
remove excess water with squeegee roller & hot air blown
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What is the function of the drive system?
series of gears & mechanical devices & motor that turn rollers
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What is the function of the replenishment system?
and has (2) types
replaces chemicals.... 1.Volume replenishment 2. Flood replenishment
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Flood replishment (low volume units) how many?
A] 1-3 ml.
B] 6-8 ml.
C] 4-5 ml.
C] 4-5 ml.
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Volume replenishment (higher volume units) how many?
a] 7-9 ml.
b] 5-7 ml.
c] 6-8 ml.
c] 6-8ml.
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what is the function of the circulation system?
a]stabilizes temperature
b]filters solution
c]mixes chemistry
d]all of the above
d]all of the above
stabilizes temp. filters solution, mixes chemistry
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what is safelight?
a] light for the film
b]protective light in darkroom
c]light inside xray tube
b]protective light in darkroom
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when is direct illuminate for most radiographic films possible?
a]dark red light at 7-15 watts
b]hot pink light at 6-12 watts
c]dark blue light at 10-16 watts
a]dark red light at 7-15 watts
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most common types of silver recovery units?
a]metallic replacement, electrolytic, chemical precipitation
b]silver replacement, condensation, chemical units
a] metallic replacement, electrolytic, chemical precipitation
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what is the Penetrometer (also called Step Wedge) function?
used to produce step wedge on film by exposure to xrays
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What is sensitometry?
a]measurement of the characteristic responses of film to exposure and processing
b]measurement of the films senses
c]measurement of penumbra
a] measurement of the characteristic responses of film to exposure and processing
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whats the function of a densitometer?
a]measures white specks on film
b]provides a readout of the amount of density on a film
c]provides amount of pi lines
b]provides a readout of the amount of density on a film
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What does OD stand for?
a]Oblique Distance number
b]Optical Density number
c]Optimum Decimal number
b]Optical Density number
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What is another name for the D Log E curve?
a]Sensitometric curve
b]H & D curve
c]LED curve
d] a&b both ( sensitometric and, H&d)
d] a&b both ( sensitometric and, H&d)
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what is base plus fog?
a]long scale fog
b]darkest spots
c]lightest a film can be
c]lightest a film can be
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what controls the toe of the curve?
a]feet of the curve
b]speed
c]density
b]speed
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what is the straight-line portion?
a]portion between Toe & shoulder of curve
b] under the toe
c]after the shoulder
a]portion between Toe & shoulder of curve
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what is Dmax?
a]maximum light
b]maximum darkness
c]few grays
b]maximum darkness
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what is Reversal or Solarization?
a]after maximum darknes (Dmax) reverses by turning light again
b]turns dark after base plug fog
a]after maximum darknes (Dmax) reverses by turning light again
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what are the primary characteristics of film?
a]desity,frequency,longitude
b]speed,contrast,latitude,resolution
c]pace,crossover effect,emulsion
b]speed,contrast,latitude,resolution
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what is resolution?
a] given amount of exposure
b]number of sensitivity specks
c]ability to accurately image an object(detail, sharpness, definition)
c]ability to accurately image an object(detail, sharpness, definition)
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What is the relationship between resolution and crystal size?
a]bigger crystals=less detail/ smaller crystals=better detail
b]bigger crystals=better detail/ smaller crystals=less detail
a]bigger crystals=less detail/ smaller crystals=better detail
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what is film speed? what is it determined by?
a] determined by size of crystals
b] exposure time
c]film size
a] determined by size of crystals
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what is speed point?
a]point where speed starts
b]speed decreases
c]to sign an average number to speed
c]to sign an average number to speed
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what is film contrast?
a] exposure in film
b]difference in various densities
c]thickness of emulsion layer
b]difference in various densities
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what controls the contrast on the sensitometric curve?
a]the steep of the slope
b]the speed
c]solarization
a]the steep of the slope
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what is gamma?
a]maximum slope (between 1.5-2.5)
b]average slope
a]maximum slope (between 1.5-2.5)
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what is the average gradient?
a]average of speed
b]average of kvp
c]average of contrast
c]average of contrast
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what is latitude?
a]range of exposure you can use for a film
b]highest number for density
c]maximum darkness
a]range of exposure you can use for a film
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how are contrast and latitude related?
a]their mothers are sisters
b]latitude gives range of density to avoid too light (high contrast) and too dark (low contrast)
c]both provide the maximum lightness
b]latitude gives range of density to avoid too light (high contrast) and too dark (low contrast)
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