PRINCIPLES OF GEOTECHNICAL
ENGINEERING CERTIFICATION
EVALUATION COMPLETE QUESTIONS AND
CORRECT ANSWERS VERIFIED
●● A good technique for reducing the radiation exposure to both patient
and operator is the use of
Answer: fast film or digital imaging
●● A patient is concerned with radiation exposure. You can assure him
that your office uses the ALARA concept, which includes
Answer: reducing the number of exposures, minimizing retakes, keeping
exposure levels as low as possible
●● All of the following structures will appear radiolucent on dental x-
ray film except
Answer: metal restorations
●● An example of cumulative radiation exposure is
Answer: cataracts, leukemia, cancer
●● Anything that occupies space and has a form or shape is
Answer: matter
,●● Because the entire x-ray area is considered a radiation hazard area, a
radiation hazard sign must be posted in
Answer: sight of patients, and sight of personnel
●● Chronic radiation exposure occurs when _______ dose of radiation
is received over a _______time period
Answer: small; long
●● Damage caused by ionizing x-radiation to genetic cells:
Answer: can affect future generations
●● Damage to which type of cell is passed on to future generations?
Answer: genetic cell
●● Exposure to radiation:
Answer: no matter how small, has the potential to cause harmful
biologic change
●● How much filtration is federally required for a dental x-ray machine
operating over 70 kVp?
Answer: 2.5 mm
, ●● One of the rules of radiation protection is never stand closer than
_____ feet from the x-ray unit during an exposure
Answer: 6
●● Primary radiation is:
Answer: also called the useful beam, the beam of x-ray that comes from
the target
●● Secondary radiation:
Answer: refer to x-radiation that is created when the primary beam
interacts with matter
●● The Guidelines for Prescribing Dental Radiographs issued by the
ADA and the FDA recommend which of the following dental imaging
procedures for a pregnant patient?
Answer: Radiographic imaging procedures do not need to be altered
because of pregnancy
●● The maximum permissible dose for an occupational worker for an
individual 18 years of age or older is _____rem/year
Answer: 5
●● The x-ray was discovered on November 8, 1895, by:
Answer: Wilhelm Conrad Roentgen
ENGINEERING CERTIFICATION
EVALUATION COMPLETE QUESTIONS AND
CORRECT ANSWERS VERIFIED
●● A good technique for reducing the radiation exposure to both patient
and operator is the use of
Answer: fast film or digital imaging
●● A patient is concerned with radiation exposure. You can assure him
that your office uses the ALARA concept, which includes
Answer: reducing the number of exposures, minimizing retakes, keeping
exposure levels as low as possible
●● All of the following structures will appear radiolucent on dental x-
ray film except
Answer: metal restorations
●● An example of cumulative radiation exposure is
Answer: cataracts, leukemia, cancer
●● Anything that occupies space and has a form or shape is
Answer: matter
,●● Because the entire x-ray area is considered a radiation hazard area, a
radiation hazard sign must be posted in
Answer: sight of patients, and sight of personnel
●● Chronic radiation exposure occurs when _______ dose of radiation
is received over a _______time period
Answer: small; long
●● Damage caused by ionizing x-radiation to genetic cells:
Answer: can affect future generations
●● Damage to which type of cell is passed on to future generations?
Answer: genetic cell
●● Exposure to radiation:
Answer: no matter how small, has the potential to cause harmful
biologic change
●● How much filtration is federally required for a dental x-ray machine
operating over 70 kVp?
Answer: 2.5 mm
, ●● One of the rules of radiation protection is never stand closer than
_____ feet from the x-ray unit during an exposure
Answer: 6
●● Primary radiation is:
Answer: also called the useful beam, the beam of x-ray that comes from
the target
●● Secondary radiation:
Answer: refer to x-radiation that is created when the primary beam
interacts with matter
●● The Guidelines for Prescribing Dental Radiographs issued by the
ADA and the FDA recommend which of the following dental imaging
procedures for a pregnant patient?
Answer: Radiographic imaging procedures do not need to be altered
because of pregnancy
●● The maximum permissible dose for an occupational worker for an
individual 18 years of age or older is _____rem/year
Answer: 5
●● The x-ray was discovered on November 8, 1895, by:
Answer: Wilhelm Conrad Roentgen
