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63 Cards in this Set

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use of outdated film will cause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