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ARRT Practice exam - core
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ARRT Practice exam - core
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ARRT Practice exam - coreA change from the small focal spot to the large focal spot will result in: - ANS-decreased
spatial resolution
A health care worker's single best protection against disease is: - ANS-frequent hand
washing
A limited operator innocently commits an error as a result of following the orders of his
or her employer, a physician. The employer may be held responsible according to the -
ANS-doctrine of respondeat superior
a limited operator who does not change linens between patients is - ANS-providing an
opportunity for fomite transmission
According to the Bergonie-Tribondeau law, the following types of cells are most
radiosensitive - ANS-Embryonic tissue cells
An increase in object-image receptor distance (OID) will result in - ANS-increased
magnification
As a general rule, a grid should be employed when the part thickness is greater than: -
ANS-12 cm
At what kVp levels do Compton interactions occur? - ANS-they occur throughout the
diagnostic radiology kVp range
Communication has been "validated" when the speaker has: - ANS-received a response
from the listener that demonstrates comprehension
Contrast is primarily controlled by altering the: - ANS-kVp
Distance, as a method used to limit operator exposure, means that: - ANS-the operator
should maximize the distance from the source during an exposure.
During digital image processing, electronic masking should not be used to replace -
ANS-proper radiographic collimation
, how can detector fog be prevented when using computed radiography cassettes -
ANS-Protect the cassette before and after exposure
How does filtration reduce patient exposure? - ANS-Removes longer-wavelength
photons
How does x-ray beam restriction minimize patient exposure? - ANS-It limits the radiation
field to the area of interest.
How often should lead aprons and gloves be checked for cracks or holes? - ANS-Every
6 months
How will the anode heel effect, if present, be seen on an image? - ANS-The image will
be lighter on the anode end than on the cathode end.
If the amount of irradiated tissue increases, what happens to scatter radiation fog? -
ANS-Scatter radiation fog increases
If the radiographic image is overexposed, which of the following changes in exposure
factors should be used to correct the problem? - ANS-Decrease the mAs
Marks, exposures, or images on a radiograph that are not a part of the intended image
are called - ANS-artifacts
motion of the patient, the tube, or the IR during the exposure will result in decreased -
ANS-spatial resolution
Mrs. Elizabeth Dunbar is 86 years old and a bit confused. She is most likely to respond
appropriately if you address her as: - ANS-Mrs. Dunbar
Nearly all new x-ray machines manufactured today use _________________
generators - ANS-high-frequency
Personnel shielding must be worn on the rare occasion during which the limited
operator may need to remain in the radiographic room during an exposure to assist the
patient in maintaining the proper position. What is the source of the greatest radiation
hazard under this circumstance? - ANS-Scattered radiation from the patient
Poor film or screen contact is seen on a radiograph as a decrease in what radiographic
quality factor - ANS-Recorded detail or spatial resolution
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