Kats Test Review
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_______ is The replacement of fresh chemicals after the loss of
chemicals during processing.
______ _______ Converts xray energy into light.
the number and size of _____ ______ ______ in the emulsion Determines the relative speed of the film.
silver halide crystals
.Has lead lines that are angled to approximately match the
angle of the divergence of the primary beam.
What is focused grid
___ _____ Refers to the linear pattern of the lead lines of a grid.
. A decrease in the number of transmitted photons that reach
the image receptor because of some misalignment of the grid.
What is grid cutoff
Located directly below the radiographic table what contains
the grid and holds the IR.
Simplest type of beam restricting device, constructed of a
flat piece of lead that has a hole in it.
What is an aperture diaphragm
. Increasing the volume of tissue irradiated results in an
increase of what?
_______ reduce patient dose, increases contrast and
The primarily result of Compton interactions.
Several sensitivity specks with many silver ions attracted
them become what?
latent image center
.After exposure, they trap the free electrons and then
attract and neutralize the positive silver ions.
What are sensitivity specs
. Site of the latent image formation.
physical imperfections in the silverhalide crystals
_____ are The radiation sensitive and light sensitive layer of the
Grid lines going opposite the angle of the divergence of the
upside down focused grid cutoff.
correctly matching the color sensitivity of the film
to the color emission of the intensifying screen is called
______ ______ Clears undeveloped silver halide from the film during
Range of exposure intensities that an IR can respond to
and aquire image data.
_____ _____ is The degree to which the emulsion is sensitive to xrays or
_______ Affects the range of radioation exposures that can provide
diagnostic optical densities.
______ contrast have a
narrow exposure latitude (extremity) or ____ contrast has a wider exposure
. A reducing agent found in film development chemistry that
produces the black (higher) densities is
. Permits film to enter the processor easily and correctly
What is the
should a grid be used?
60kVp or higher and greater than 10cm
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