Increase in collimation from a 14x17 field size to 4x4 field size would result in
decrease in IR exposure
an increase in added filtration
decreases in IR exposure
a decrease in time from 0.1s to 0.02 would result in
a decrease in IR exposure because time is part of mas if any part of mas decreases less photons IR and radiographic density decreases
an increase in 5% of the kvp (in the lower kv range) result in
increase in IR exposure
A change in mAs from 50-58 would result in
increase of IR exposure
a change from a 0.5 in to a 10 OID would result in
decrease in IR exposure
a change in grid ratio from a 5:1 to an 8:1 would result in
a decrease in IR exposure
a change in focal spot size from large to small would result in
no change to IR exposure
a change f/s speed from 800 to 100
decrease in IR exposure because it is going from a higher speed to a slower speed the higher or faster the film speed the faster the image turns black
a change in mAs from 30-45 would result in
increase in IR exposure
a change in configuration of the generator from a high frequency unit to a full wave (1 phase -2 pulse) to would result in an image with too little density/IR exposure
T or F
True
t or f
does scatter add density or exposure to a radiograph/IR
T
an increase in kvp will increase the number of photons reaching the IR
t or F
T
window level describes digital processing that produces changes in brightness
t or f
T
there is an direct relationship between tissue thickness type and density/IR exposure
t or f
t
a decrease in SID from 72 to 56 would require a reduction in mAs by half
t or f
true
the relationship between mAs and SID is inversely proportional to the square of the distance
t or f
F
when CR or DR images are underexposed radiographic noise or quantum mottle may be apparent. What change would best correct this
increase mas
an additive disease process would require ______ to maintain IR exposure of radiographic
an increase in kvp
an increase IR exposure or radiographic density will most likely result from a decrease in:
grid ratio
kvp
focal spot size
mas
grid ratio
which two things would decrease IR exposure or radiographic density