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05 1Rad Radiation Safety for Patients and Operators Questions and Answers Rated A+
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05 1Rad Radiation Safety for Patients and Operators
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05 1Rad Radiation Safety for Patientsand Operators
Which type of radiation is the most penetrating beam produced at the target of the
anode? - answer Secondary
Which is the description for the acronym ALARA concept? - answer As Low As
Reasonably Achievable
Which of the following is the least sensitive to radiation exposure? - answer Nerve cells
Your adult recall patient has no clinical caries and is not at increased risk for caries. He
had bitewing images taken one year ago. When should you take bitewing images on
your patient. - answer24-36 months from his last bitewing images
Which statement is correct regarding filtration of the x-ray tube head? - answer It results
in a more penetrating, useful beam.
Inherent filtration in the dental x-ray tubehead: _________________________. -
answerincludes filtration that takes place when the primary beam passes through the
glass window of the x-ray tube, the insulating oil, and the tubehead seal
Which of the following is true about the exposure of radiation on the body? According to
the direct theory of radiation, what happens to your patient as a result of exposure to x-
ray photons? - answerDamage occurs as a result of ionizing radiation hitting critical
areas.
The coin test is used to determine__________ - answersafety light adequacy.
Which of the following steps should be followed when exposing a panoramic image? -
answerInstruct the patient to close the lips on the bite block and to swallow once and
then place the tongue against the roof of the mouth to maintain that position during
exposure.
Which can occur if there is radiation injury during tooth development? - answerTooth
bud destruction
From which of the following metals is the filter made? - answerAluminum
What exposure control selection(s) controls the quality of the x-ray beam? -
answerKilovoltage
, Which of these is not a reason to understand ionizing radiation? - answerIonizing
radiation is not harmful.
The kV setting controls which of the following? - answerPenetrating power of x-ray
energy.
X-rays are produced at the - answerpositive anode.
Which cells of the body are least susceptible to x-ray? - answerMuscle
What is occurring inside the x-ray tubehead when you increase the kilovoltage setting
on the exposure control panel? - answerThe penetrating power of the x-ray beam
increases.
How far away from the x-ray beam must you stand when exposing dental images on
your patient in order to be protected from the primary beam? - answer6 feet
Which type of receptor would produce the smallest patient dose of radiation? -
answerDigital sensor
You have added an extension to your PID. The length of the PID is changing from 16 to
12 inches. How does this affect the intensity of the x-ray beam? What adjustment will
you need to make to keep the density of your images consistent? - answerThe resultant
beam will be two times as intense. You will need to decrease the exposure time.
Your patient is a pretty large man, on the obese side. What adjustment would you
make, if any, to the control panel when exposing dental images? - answerIncrease the
exposure time, kV, and mA.
Which of the following devices would be used to aid in positioning the PID in relation to
the tooth and image receptor? - answerBeam alignment device
The sharpness of a dental image is influenced by all of the following factors except one.
Which is the EXCEPTION? - answerTarget-to-image receptor distance
When x-ray exposure time is increased, there is __________density of the dental
image. - answerincreased
Which of the following is an acceptable emission from the tubehead? - answerPrimary
radiation
Which is the metal disk with a small opening located inside the position indicator device
in the path of the x-ray beam? - answerLead collimator
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