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63 Cards in this Set
- Front
- Back
sensitometric testing should be performed every
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Day
speed, contrast, and base plus fog should be checked daily |
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speed and contrast values measured during sensitometrc testing should not vary more than how much from the baseline
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10%
any larger variation should prompt troubleshooting of the processor |
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speed step used during sensitometric testing is the step closet to what density value
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1.0
the speed step used during sensitometric testing is the one closet to a value density of 1 |
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a malfunction in which the developer temperature runs too high will cause
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dark films
the developer solution is very sensitive to temerature and will become too active, resulting in dark films |
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a malfunction in which the developer replenishment runs too high will cause
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light films
light films indicate that the film is not getting enough solution |
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a malfunction in which there is a white light leak into the processing room will cause
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fogged films
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poor fixer replenishment will cause
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milky films
there is insufficient clearing of the unexposed silver bromide crystals |
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a malfunction in which there are dark flakes in the wash water is caused by
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algae in the wash water
this is a good reason why the tank should be drained daily |
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use of outdated film will cause
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fogged films
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a malfunction in which fixer solution has entered the developer tank will cause
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fogged films
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in which section of the processor are unexposed silver halide crystals washed out of the emulsion
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fixer
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in which sectiion of the processor is the emulsion sealed
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dryer
the heat of the dryer helps seal the emulsion |
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in which section of the processor is the temperature set from 90 degree to 105 degree F, depending on the type of chemistry being used?
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developer
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which of the following systems moves the film and agitates the chemistry
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transport
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which of the following systems provides freash chemistry to process each film
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replenishment
replenishment occurs as the film is entering the processor. it is activated by the entrance roller microswitches |
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which of the following systems removes reaction particles from the developer solution by sending it through a filter
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recirculation
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the settings on which of the following systems is determined by the average number of 14X17" films fed through the processor in a typical workday
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replenishment
this determines how much chemistry is pumped into the processor to handle each film |
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which of the following grid errors will reslut in an image that shows normal density in the middle but decreased density on the sides, assuming the correct side of the grid faces the x-ray tube
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grid-focusing decentering
the central rays will still go through the grid, but the diverging rays will be absorbed in the lead strips |
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which of the following grid errors will result in an image that shows decreased density more to one side than the other
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lateral decentering
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grid ratio is described by which of the following
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H/D
height of the lead strips divided by the distance between them |
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grid radius is described as
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using any SID out of range will result in grid cutoff
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the aspect of a film-screen system that may be examined by conducting a wire mesh test is the
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film-screen contact
wire mesh will blur in the area of poor contact |
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the portion of an intensifying screen that helps prevent damage from scratching is the
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protective layer
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the portion of an intensifying screen that is made of polyester is the
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base
the same material as the base of the film, which is plastic |
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a faster film-screen system will exhibit
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higher contrast
contrast is primarily determined by the speed of the film |
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a slower film-screen system will exhibit
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lower contrast
contrast is primarily determined by the speed of the film |
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a faster film-screen system will exhibit
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narrower latitude
a faster film-screen system will exhibit a narrower latitude |
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the section of an H&D curve that represents base plus fog is the
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toe
the section of the H&D curve is the toe |
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the section of an H&D curve that represents D-max is the
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shoulder
this is the area of maximum density |
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the section of an H&D curve on which exposure is plotted is the
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x-axis
the section of an H&D curve on which density is plotted is the y-axis |
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the function of the blue tint added to the films base is to
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reduce glare
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as kvp is increased
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contrast decreases
there is more uniform penetration of the part, as well as an increase in the production of scatter |
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as kvp is decreased
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scale of contrast shortens
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what factors affect recorded detail
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OID and SID
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what controls contrast
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kvp
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what controls magnification
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SID and OID
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when kvp is decreased, there is an increase in the number of photoelectric interactions that occur
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this is why images at lower kvp tend to be more black and white
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differential absorption of the x-ray beam produces
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subject contrast
subject contrast is controlled by kvp and the atomic number of the part being radiographed |
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beam restriction has the following effect on contrast
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increases contrast
contrast increase b/c less scatter radiation is produced as a result of fewer compton interactions |
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an enlargement at the end of a bone is called a
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head
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a rounded projection of moderate size is called a
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tubercle
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a spine describes
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sharp prominence
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a pit is desribed as a
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fossa
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a furrow is desribed as a
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groove
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a "typical" skull would be desribed as
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mesocephalic
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synovial joints are called
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diarthroses
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fibrous joints are called
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synarthroses
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the radiocarpal joint has what type of movement
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condyloid
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the proximal radioulnar articulation has type of movement
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pivot
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which of the following bones has a temporal process
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zygomatic bone
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which of the following bones has an alveolar process
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maxilla
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which of the following bones has wings
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sphenoid bone
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which of the following bones has a coronal suture
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parietal bone
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which of the following bones has a external protuberance
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occipital bone
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which of the following bones consists of five fused segments
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sacrum
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which of the following bones has a dens
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axis
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which of the following individual vertabrae are larger and heavier than other individual vertebrae
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lumbar vertebrae
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the eleventh and twelfth pairs of ribs are called
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floating
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the blunt cartilaginous tip of the sternum is the
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xiphoid
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between the greater and lesser tubercles of the humerus is(are) located the
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bicipital groove
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below the tubercles of the humerus is(are) the
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surgical neck
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which of the following parts of the humerus articulate(s)with the ulna
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trochlea
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this bone is located in the wrist, between the trapezoid and the hamate
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capitate
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