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RHS EXAM: RADIATION SAFETY FOR PATIENTS
AND OPERATORS Exam Questions And
Answers |Latest 2025 | Guaranteed Pass.
The annual maximum accumulated dose (MAD) of radiation for dental assistant is based on
which of the following calculations? - Answer✔Age minus 18 times 5 rems/year.
The population most susceptible to radiation damage is - Answer✔Infants.
Cells most suspectable to radiation damage are - Answer✔Bone marrow.
The main purpose of using a lead apron with a thyroid collar when exposing dental radiographs
is to protect the patient from - Answer✔Scatter radiation.
Which of the following can help to protect patients from excess radiation damage to tissues? -
Answer✔High kVp.
The purpose of intensifying screens is to - Answer✔decrease the amount of the radiation
exposure.
The diameter of the cone-shaped beam produced from a circular collimator is - Answer✔2.75
inches.
Which of the following cells exposed to radiation may be associated with leukemia? -
Answer✔Somatic.
Which of the following tissues is the most highly radiosensitive? - Answer✔Skin.
Which of the following landmarks is useful when mounting films in the maxillary central area? -
Answer✔Anterior nasal spine.
Radiation injury results from - Answer✔Exposure.
If there are no teeth to serve as guides, which of the following landmarks indicates a maxillary
molar area radiograph? - Answer✔Tuberosity.
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 11:08AM. A+
Which of the following PID produces the greatest amount of secondary radiation? -
Answer✔Closed-end plastic cone.
Radiation injury can be measured by - Answer✔Dose rate.
ALARA is primarily concerned with the radiation that is - Answer✔artificial.
The amount of which of the following is used in determining the degree of radiation injury? -
Answer✔Tissue irradiated.
The position-indicating device (PID) shape that most effectively reduces patient exposure to
radiation is - Answer✔rectangular.
The radiation that is formed by the interaction of x-rays with matter is - Answer✔secondary
radiation.
Which of the following equations is used to determine the occupational maximum accumulated
dose (MAD) of radiation? - Answer✔Age minus 18 times 5 rems/year.
Which of the following protection techniques is used to minimize x-radiation exposure to the
operator? - Answer✔Structural shielding.
When the tubehead drifts, the first step the dental assistant should take is to - Answer✔stop
using the machine.
Compared to a round position-indicating device (PID), which of the following PIDs reduces
patient radiation exposure by up to 70 percent? - Answer✔Rectangular shaped.
Which of the following radiation effects increase in severity as more radiation is absorbed by
somatic cells? - Answer✔Nonstochastic.
The shorter the wavelength of electromagnetic radiation, the greater the - Answer✔energy.
Which of the following affects the speed of the electrons emitted from the tubehead? -
Answer✔kVp.
Which of the following radiation injury theories describes cells that are damaged by way of
absorption? - Answer✔Indirect.
Human tissue are mainly composed of - Answer✔water/H2O.
Which of the following was established to address the education and certification of operators
of radiographic equipment? - Answer✔Consumer-Patient Radiation Health and Safety Act.
During patient exposure, protection from radiation for the dental assistant includes -
Answer✔standing behind a wall.
2
RHS EXAM: RADIATION SAFETY FOR PATIENTS
AND OPERATORS Exam Questions And
Answers |Latest 2025 | Guaranteed Pass.
The annual maximum accumulated dose (MAD) of radiation for dental assistant is based on
which of the following calculations? - Answer✔Age minus 18 times 5 rems/year.
The population most susceptible to radiation damage is - Answer✔Infants.
Cells most suspectable to radiation damage are - Answer✔Bone marrow.
The main purpose of using a lead apron with a thyroid collar when exposing dental radiographs
is to protect the patient from - Answer✔Scatter radiation.
Which of the following can help to protect patients from excess radiation damage to tissues? -
Answer✔High kVp.
The purpose of intensifying screens is to - Answer✔decrease the amount of the radiation
exposure.
The diameter of the cone-shaped beam produced from a circular collimator is - Answer✔2.75
inches.
Which of the following cells exposed to radiation may be associated with leukemia? -
Answer✔Somatic.
Which of the following tissues is the most highly radiosensitive? - Answer✔Skin.
Which of the following landmarks is useful when mounting films in the maxillary central area? -
Answer✔Anterior nasal spine.
Radiation injury results from - Answer✔Exposure.
If there are no teeth to serve as guides, which of the following landmarks indicates a maxillary
molar area radiograph? - Answer✔Tuberosity.
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 11:08AM. A+
Which of the following PID produces the greatest amount of secondary radiation? -
Answer✔Closed-end plastic cone.
Radiation injury can be measured by - Answer✔Dose rate.
ALARA is primarily concerned with the radiation that is - Answer✔artificial.
The amount of which of the following is used in determining the degree of radiation injury? -
Answer✔Tissue irradiated.
The position-indicating device (PID) shape that most effectively reduces patient exposure to
radiation is - Answer✔rectangular.
The radiation that is formed by the interaction of x-rays with matter is - Answer✔secondary
radiation.
Which of the following equations is used to determine the occupational maximum accumulated
dose (MAD) of radiation? - Answer✔Age minus 18 times 5 rems/year.
Which of the following protection techniques is used to minimize x-radiation exposure to the
operator? - Answer✔Structural shielding.
When the tubehead drifts, the first step the dental assistant should take is to - Answer✔stop
using the machine.
Compared to a round position-indicating device (PID), which of the following PIDs reduces
patient radiation exposure by up to 70 percent? - Answer✔Rectangular shaped.
Which of the following radiation effects increase in severity as more radiation is absorbed by
somatic cells? - Answer✔Nonstochastic.
The shorter the wavelength of electromagnetic radiation, the greater the - Answer✔energy.
Which of the following affects the speed of the electrons emitted from the tubehead? -
Answer✔kVp.
Which of the following radiation injury theories describes cells that are damaged by way of
absorption? - Answer✔Indirect.
Human tissue are mainly composed of - Answer✔water/H2O.
Which of the following was established to address the education and certification of operators
of radiographic equipment? - Answer✔Consumer-Patient Radiation Health and Safety Act.
During patient exposure, protection from radiation for the dental assistant includes -
Answer✔standing behind a wall.
2
