When exposing radiographs, what is the minimum distance the operator should stand from
the tube head? - ANSWER 6 feet
Who is most susceptible to radiation damage? - ANSWER infants
The most important step the dentist can take in protecting patients from x-radiation is to: -
ANSWER properly prescribe radiographs.
What step should be taken immediately if the tubehead drifts? - ANSWER stop using the
machine
During patient exposure, protection from radiation for the operator includes: - ANSWER
standing behing a wall
Which organ is the most sensitive to radiographic exposure? - ANSWER Thyroid gland
Which landmark is useful when mounting images of the mandibular posterior area? - AN-
SWER Mental foramen
Long-term effects of exposure to radiation may be associated with: - ANSWER birth ab-
normalities.
The most important responsibility of the dental radiography operator is: - ANSWER im-
plementing ALARA principle
1
, Which landmark is useful when mounting images in the maxillary central area? - AN-
SWER Anterior nasal spine
Which sequence best describes radiation injury to tissue? - ANSWER Latent period, pe-
riod 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: - ANSWER 1.5 mm
Added filtration in the x-ray tubehead protects the: - ANSWER patient
The most common artificial radiation exposure comes from: - ANSWER medical radiation
Which protection technique is used to minimize x-radiation exposure to the operator? - AN-
SWER structiral shielding
When changing the 8-inch PID to a 16-inch PID, what is used to determine the intensity of
the beam? - ANSWER inverse square law
The shorter the wavelength of electromagnetic radiation, the greater the: - ANSWER en-
ergy
Which organization regulates the manufacturing and installation of x-ray equipment? - AN-
SWER Federal government
What prevents x-rays from escaping the tubehead? - ANSWER Leaded-glass housing
What was established to address the education and certification of radiographic equipment
operators? - ANSWER Consumer-Patient Radiation Health and Safety Act
2
the tube head? - ANSWER 6 feet
Who is most susceptible to radiation damage? - ANSWER infants
The most important step the dentist can take in protecting patients from x-radiation is to: -
ANSWER properly prescribe radiographs.
What step should be taken immediately if the tubehead drifts? - ANSWER stop using the
machine
During patient exposure, protection from radiation for the operator includes: - ANSWER
standing behing a wall
Which organ is the most sensitive to radiographic exposure? - ANSWER Thyroid gland
Which landmark is useful when mounting images of the mandibular posterior area? - AN-
SWER Mental foramen
Long-term effects of exposure to radiation may be associated with: - ANSWER birth ab-
normalities.
The most important responsibility of the dental radiography operator is: - ANSWER im-
plementing ALARA principle
1
, Which landmark is useful when mounting images in the maxillary central area? - AN-
SWER Anterior nasal spine
Which sequence best describes radiation injury to tissue? - ANSWER Latent period, pe-
riod 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: - ANSWER 1.5 mm
Added filtration in the x-ray tubehead protects the: - ANSWER patient
The most common artificial radiation exposure comes from: - ANSWER medical radiation
Which protection technique is used to minimize x-radiation exposure to the operator? - AN-
SWER structiral shielding
When changing the 8-inch PID to a 16-inch PID, what is used to determine the intensity of
the beam? - ANSWER inverse square law
The shorter the wavelength of electromagnetic radiation, the greater the: - ANSWER en-
ergy
Which organization regulates the manufacturing and installation of x-ray equipment? - AN-
SWER Federal government
What prevents x-rays from escaping the tubehead? - ANSWER Leaded-glass housing
What was established to address the education and certification of radiographic equipment
operators? - ANSWER Consumer-Patient Radiation Health and Safety Act
2
