Exam (elaborations)
DANB-Radiation Safety-Operator Questions and Answers 2024
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DANB-Radiation Safety-Operator3 rems - answer According to the OSHA Ionizing Radiation Standard, the maximum
whole body dose per calendar quarter (3 months) is
A. 18 rems.
B. 7 rems.
C. 3 rems
D. 20 rems
Dermatitis - answer Which of the following is an example of an acute health effect of
ionizing radiation exposure?
A. Leukemia
B. Skin cancer
C. Dermatitis
D. Genetic defects
discontinue use of the machine until a technician examines it. - answerIf an X-ray
machine is suspected to be malfunctioning, the dental assistant should
A. continue to use the machine until a technician examines it.
B. discontinue use of the machine until a technician examines it.
C. take some test films on a coworker to troubleshoot the problem.
D. make an adjustment to the settings so the X-rays are diagnostic.
Time is directly proportional to exposure.
(The length of time the dental assistant is exposed to radiation is directly proportional to
the dose that will be received. The longer the exposure, the higher the dose. ) -
answerWhich statement is TRUE of radiation exposure?
A. Time is not related to exposure.
B. Time is inversely proportional to exposure.
C. Time is inversely proportional to the square of the exposure.
D. Time is directly proportional to exposure.
6 feet from the X-ray unit.
(To avoid scatter or leakage radiation, the operator must be at least 6 feet away from
the X-ray source. ) - answerUnless the dental assistant is behind a barrier, the assistant
must never stand closer than
, A. 5 feet from the X-ray unit.
B. 6 feet from the X-ray unit.
C. 4 feet from the X-ray unit.
D. 7 feet from the X-ray unit.
secondary radiation.
(When the primary beam strikes the patient, the patient's body tissues may release
secondary radiation, which is generated and emitted by the patient. ) - answerWhen the
dental assistant is exposing radiographs on a patient, the patient may be a source of
A. non-ionizing radiation.
B. leakage radiation.
C. secondary radiation.
D. primary radiation.
The dental assistant routinely held film with his/her finger during exposures. -
answerWhich of the following is considered a chronic exposure for the dental assistant?
A. The dental assistant routinely held film with his/her finger during exposures.
B. The dental assistant followed ALARA concept routinely during radiographs.
C. The dental assistant routinely used E speed film for intraoral radiographs.
D. The X-ray machine had a faulty seal for a week before it was detected.
The dental assistant routinely held film with his/her finger during exposures. -
answerWhich of the following is considered a chronic exposure for the dental assistant?
A. The dental assistant routinely held film with his/her finger during exposures.
B. The dental assistant followed ALARA concept routinely during radiographs.
C. The dental assistant routinely used E speed film for intraoral radiographs.
D. The X-ray machine had a faulty seal for a week before it was detected.
on a wall outside the X-ray area. - answerThe exposure button for the X-ray machine is
usually located
A. on the side of the tube head.
B. on the anode of the machine.
C. on a wall inside the X-ray room.
D. on a wall outside the X-ray area.
in each of the radiation areas.
(OSHA's Ionizing Radiation Standard states that each radiation area needs to have a
sign with the radiation caution symbol) - answerTo avoid inadvertently exposing
personnel to radiation, a radiation hazard sign must be posted
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