Low mAs with high kV - ANS What combination of kV and mAs is recommended to decrease patient exposure?
Flat contact shields, shaped contact shields, shadow shields, and breast shields - ANS List at least three types of patient shields.
Restriction of the useful beam - ANS What is the...
, Low mAs with high kV - ANS What combination of kV and mAs is recommended to decrease
patient exposure?
Flat contact shields, shaped contact shields, shadow shields, and breast shields - ANS List at
least three types of patient shields.
Restriction of the useful beam - ANS What is the single most important way to reduce patient
exposure?
K
Collimators, cones, and aperture diaphragms - ANS List three types of beam restrictors.
Inherent filtration - ANS The x-ray tube glass envelope and its insulating oil function as what
C
kind of filtration?
2.5 mm aluminum equivalent - ANS How much total filtration is required for equipment
LO
operating above 70 KV?
To reduce patient skin dose - ANS What is the primary purpose of filtration of the useful x-ray
beam?
YC
The average energy is increased - ANS How does added filtration affect the average energy
of the x-ray beam?
Added filtration has no effect on the minimum wavelength of the x-ray beam - ANS How does
added filtration affect the minimum wavelength of the x-ray beam?
D
kv and HVL (half value layer) - ANS What are the two ways used to express x-ray beam
quality?
U
Greater - ANS Because the primary x-ray beam is polyenergetic, the entrance dose is often
significantly ____ then the exit dose.
ST
PA - ANS To reduce exposure to the lens, the reproductive organs, and the breasts, it is
helpful to perform these examinations in what position?
ALARA (as low as reasonably achievable) - ANS What is the concept employed every day,
with every examination, in order to achieve optimal radiation protection?
1-year-old child - ANS Who of the following is likely to be most radiosensitive: 1-year-old child,
20-year-old young adult, 50-year-old adult?
Automatic exposure control (AEC) - ANS What is the feature of most x-ray imaging systems
that terminates the x-ray exposure once adequate exposure reaches the image receptor?
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