©THESTAR 2024/2025 ALL RIGHTS RESERVED 11:09PM. A+
DANB-Radiation Safety-Operator Exam
Questions With Correct Answers 100%
Verified.
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 - Answer✔3 rems
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 - Answer✔Dermatitis
If 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.
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 11:09PM. A+
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. - Answer✔discontinue use
of the machine until a technician examines it.
Which 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. - Answer✔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. )
Unless 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. - Answer✔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. )
When 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. - Answer✔secondary radiation.
2
DANB-Radiation Safety-Operator Exam
Questions With Correct Answers 100%
Verified.
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 - Answer✔3 rems
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 - Answer✔Dermatitis
If 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.
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 11:09PM. A+
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. - Answer✔discontinue use
of the machine until a technician examines it.
Which 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. - Answer✔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. )
Unless 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. - Answer✔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. )
When 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. - Answer✔secondary radiation.
2
