Radiation Health And Safety - Questions With Correct
Solutions
Which of the following is true about the exposure of radiation on the body?
Correct Answer - The indirect theory of radiation suggests that ionizing
radiation creates the formation of free radicles.
Which is the primary example of a patient protection technique used before x-
ray exposure? Correct Answer - Proper prescribing of dental images
What is occurring inside the x-ray tubehead when you increase the kilovoltage
setting on the exposure control panel? Correct Answer - The penetrating
power of the x-ray beam increases.
Radiation protection for the operator includes all of the following except
______________________. Correct Answer - never stand closer than 3 feet from
the x-ray unit during an exposure
Which of the following is an accurate statement about safe operating
procedures? Correct Answer - All dental staff members should wear
dosimeters.
If you decreased exposure time and left the other exposure factors the same,
what impact would this have on your dental image? Correct Answer - The
image would be lighter because the density decreases.
You are taking dental image on your patient, which of the following is the
most critical for you to do in order to protect yourself from x-radiation
exposure? Correct Answer - Avoid exposure to the primary beam.
Which term best describes the concept of radiation protection as it pertains to
technique, amount, and quality? Correct Answer - ALARA
What can a radiographer wear to measure the daily amount of radiation
exposure? Correct Answer - Dosimeter badge
, If you want to provide the lowest amount of exposure possible for you patient,
which of the following settings should you use? Correct Answer - 70kV, 6
mA, .40 impulses
Which device provides the greatest protection for patients against radiation
exposure? Correct Answer - Use of the fastest speed film available
You suspect your patient has caries. Which type of contrast would be the best
when looking for dental caries? Correct Answer - High contrast; few
shades of gray
Which of the following represents the optimum desired occupational dose?
Correct Answer - 0 rem/yr
The maximum permissible dose (MPD) for occupationally exposed workers is
Correct Answer - 0.05 Sv/yr.
The permitted lifetime accumulated dose is referred to as the
______________________. Correct Answer - Accumulative Occupational Dose
History
Which of the following components of the tubehead protects the patient by
removing long-wavelength, low-energy x-rays? Correct Answer - Filter
Which statement would not be a function of the Consumer-Patient Radiation
Health and Safety Act? Correct Answer - Mandating the number of dental
images for specific treatment.
You noticed that your patient moved just as you pressed the exposure button.
What affect will that have on your dental image? Correct Answer -
Alteration in image sharpness
The sharpness of a dental image is influenced by all of the following factors
except one. Which is the EXCEPTION? Correct Answer - Target-to-image
receptor distance
Which source produces the most annual radiation exposure to persons in the
United States? Correct Answer - Radon
Solutions
Which of the following is true about the exposure of radiation on the body?
Correct Answer - The indirect theory of radiation suggests that ionizing
radiation creates the formation of free radicles.
Which is the primary example of a patient protection technique used before x-
ray exposure? Correct Answer - Proper prescribing of dental images
What is occurring inside the x-ray tubehead when you increase the kilovoltage
setting on the exposure control panel? Correct Answer - The penetrating
power of the x-ray beam increases.
Radiation protection for the operator includes all of the following except
______________________. Correct Answer - never stand closer than 3 feet from
the x-ray unit during an exposure
Which of the following is an accurate statement about safe operating
procedures? Correct Answer - All dental staff members should wear
dosimeters.
If you decreased exposure time and left the other exposure factors the same,
what impact would this have on your dental image? Correct Answer - The
image would be lighter because the density decreases.
You are taking dental image on your patient, which of the following is the
most critical for you to do in order to protect yourself from x-radiation
exposure? Correct Answer - Avoid exposure to the primary beam.
Which term best describes the concept of radiation protection as it pertains to
technique, amount, and quality? Correct Answer - ALARA
What can a radiographer wear to measure the daily amount of radiation
exposure? Correct Answer - Dosimeter badge
, If you want to provide the lowest amount of exposure possible for you patient,
which of the following settings should you use? Correct Answer - 70kV, 6
mA, .40 impulses
Which device provides the greatest protection for patients against radiation
exposure? Correct Answer - Use of the fastest speed film available
You suspect your patient has caries. Which type of contrast would be the best
when looking for dental caries? Correct Answer - High contrast; few
shades of gray
Which of the following represents the optimum desired occupational dose?
Correct Answer - 0 rem/yr
The maximum permissible dose (MPD) for occupationally exposed workers is
Correct Answer - 0.05 Sv/yr.
The permitted lifetime accumulated dose is referred to as the
______________________. Correct Answer - Accumulative Occupational Dose
History
Which of the following components of the tubehead protects the patient by
removing long-wavelength, low-energy x-rays? Correct Answer - Filter
Which statement would not be a function of the Consumer-Patient Radiation
Health and Safety Act? Correct Answer - Mandating the number of dental
images for specific treatment.
You noticed that your patient moved just as you pressed the exposure button.
What affect will that have on your dental image? Correct Answer -
Alteration in image sharpness
The sharpness of a dental image is influenced by all of the following factors
except one. Which is the EXCEPTION? Correct Answer - Target-to-image
receptor distance
Which source produces the most annual radiation exposure to persons in the
United States? Correct Answer - Radon
