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FDI REVIEW QUESTIONS & ANSWERS RATED 100% CORRECT!!
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Name: Score:182 Multiple choice questions
Term 1 of 182
Electrons are "boiled" off what portion of the x-ray tube?
focusing cup
tube housing
filament
anode
Term 2 of 182
What would be the appropriate change in mAs if the kVp were decreased by 15% and the density
of the image needs to be maintained?
Double the mAS
Increase the mAs by 4x's
Halve the mAs
Decrease the mAs by 1/4
Term 3 of 182
The _________ ______________ of a digital imaging system refers to the ability of a detector to accurately
capture the range of photon intensities that exit the patient.
dynamic range
temporal accuracy
image stability
spatial resolution
,Term 4 of 182
A radiograph that is fogged, blurred or dull in appearance has most likely been exposed to which
of the following?
Coherent radiation
Photoelectric radiation
Primary radiation
Scatter radiation
Term 5 of 182
Which grid is used for most diagnostic imaging purposes?
Reciprocating
Parallel
Focused
Crossed
Term 6 of 182
Which primary exposure factor influences both the quantity and the quality of the x-ray beam?
mas
contrast
object-film distance
kVp
Term 7 of 182
True/False: When possible, a higher kVp and lower mAs should be used to reduce patient
exposure.
True
False
,Term 8 of 182
True/False: When a higher kVp within the diagnostic range is used, the overall number of x-ray
interactions within matter decreases; however, the percentage of Compton interactions is likely to
increase.
True
False
Definition 9 of 182
Deterministic
Stochastic
Which of the following increases as collimation increases?
Who discovered x-rays
Identify the two general categories of radiation effects.
What is the purpose of the intensifying screen?
Term 10 of 182
What is the undesirable removal of primary radiation by a grid called?
Sequestering
Collimation
Grid cutoff
Interspacing
, Term 11 of 182
When filtration is added to an x-ray beam _______________ increases.
radiation output
radiation quantity
radiation quality
nothing
Term 12 of 182
True/False: Radiographic images of objects are always magnified in size in terms of the true
object size.
True
False
Term 13 of 182
Which of the following would occur if the kVp were increased by 15% and no changes were made
to mAs?
Density would remain the same but contrast would be decreased.
Density would be decreased and contrast would increase.
Density would be increased and contrast would be decreased.
Density would be unchanged and contrast would decrease.
Term 14 of 182
True/False: Digital imaging quality is improved with a smaller matrix size and includes a fewer
number of larger pixels.
True
False
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