DANB RHS - Radiation Safety UPDATED
ACTUAL Questions and CORRECT
Answers
When exposing radiographs, what is the minimum distance the operator should stand from the
tube head? - CORRECT ANSWER - 6 feet
Who is most susceptible to radiation damage? - CORRECT ANSWER - infants
The most important step the dentist can take in protecting patients from x-radiation is to: -
CORRECT ANSWER - properly prescribe radiographs.
What step should be taken immediately if the tubehead drifts? - CORRECT ANSWER -
stop using the machine
During patient exposure, protection from radiation for the operator includes: - CORRECT
ANSWER - standing behing a wall
Which organ is the most sensitive to radiographic exposure? - CORRECT ANSWER -
Thyroid gland
Which landmark is useful when mounting images of the mandibular posterior area? - CORRECT
ANSWER - Mental foramen
Long-term effects of exposure to radiation may be associated with: - CORRECT
ANSWER - birth abnormalities.
The most important responsibility of the dental radiography operator is: - CORRECT
ANSWER - implementing ALARA principle
, Which landmark is useful when mounting images in the maxillary central area? - CORRECT
ANSWER - Anterior nasal spine
Which sequence best describes radiation injury to tissue? - CORRECT ANSWER - Latent
period, period of injury, period of recovery.
For x-ray machines operating in ranges at or below 70 kVp, the total aluminum equivalent
filtration must be at least: - CORRECT ANSWER - 1.5 mm
Added filtration in the x-ray tubehead protects the: - CORRECT ANSWER - patient
The most common artificial radiation exposure comes from: - CORRECT ANSWER -
medical radiation
Which protection technique is used to minimize x-radiation exposure to the operator? -
CORRECT ANSWER - structiral shielding
When changing the 8-inch PID to a 16-inch PID, what is used to determine the intensity of the
beam? - CORRECT ANSWER - inverse square law
The shorter the wavelength of electromagnetic radiation, the greater the: - CORRECT
ANSWER - energy
Which organization regulates the manufacturing and installation of x-ray equipment? -
CORRECT ANSWER - Federal government
What prevents x-rays from escaping the tubehead? - CORRECT ANSWER - Leaded-glass
housing
What was established to address the education and certification of radiographic equipment
operators? - CORRECT ANSWER - Consumer-Patient Radiation Health and Safety Act
ACTUAL Questions and CORRECT
Answers
When exposing radiographs, what is the minimum distance the operator should stand from the
tube head? - CORRECT ANSWER - 6 feet
Who is most susceptible to radiation damage? - CORRECT ANSWER - infants
The most important step the dentist can take in protecting patients from x-radiation is to: -
CORRECT ANSWER - properly prescribe radiographs.
What step should be taken immediately if the tubehead drifts? - CORRECT ANSWER -
stop using the machine
During patient exposure, protection from radiation for the operator includes: - CORRECT
ANSWER - standing behing a wall
Which organ is the most sensitive to radiographic exposure? - CORRECT ANSWER -
Thyroid gland
Which landmark is useful when mounting images of the mandibular posterior area? - CORRECT
ANSWER - Mental foramen
Long-term effects of exposure to radiation may be associated with: - CORRECT
ANSWER - birth abnormalities.
The most important responsibility of the dental radiography operator is: - CORRECT
ANSWER - implementing ALARA principle
, Which landmark is useful when mounting images in the maxillary central area? - CORRECT
ANSWER - Anterior nasal spine
Which sequence best describes radiation injury to tissue? - CORRECT ANSWER - Latent
period, period of injury, period of recovery.
For x-ray machines operating in ranges at or below 70 kVp, the total aluminum equivalent
filtration must be at least: - CORRECT ANSWER - 1.5 mm
Added filtration in the x-ray tubehead protects the: - CORRECT ANSWER - patient
The most common artificial radiation exposure comes from: - CORRECT ANSWER -
medical radiation
Which protection technique is used to minimize x-radiation exposure to the operator? -
CORRECT ANSWER - structiral shielding
When changing the 8-inch PID to a 16-inch PID, what is used to determine the intensity of the
beam? - CORRECT ANSWER - inverse square law
The shorter the wavelength of electromagnetic radiation, the greater the: - CORRECT
ANSWER - energy
Which organization regulates the manufacturing and installation of x-ray equipment? -
CORRECT ANSWER - Federal government
What prevents x-rays from escaping the tubehead? - CORRECT ANSWER - Leaded-glass
housing
What was established to address the education and certification of radiographic equipment
operators? - CORRECT ANSWER - Consumer-Patient Radiation Health and Safety Act
