DENTAL RADIATION SAFETY EXAM
QUESTIONS AND ANSWERS
Use of lead apron in keeping with what concept of patient protection - Answer-ALARA
(As low as reasonably achievable)
This is required on all x-ray equipment to remove long wavelength x-rays - Answer-
Aluminum Filter
Maximum Permissible Dose - Answer-Dose of radiation the body can endure with little
or no injury within a specific period
Maximum Accumulated Dose - Answer-The maximum accumulated lifetime radiation
dose
Film Holding Device - Answer-reduces exposure to patient and movement of the film
and stabilizes film
What are the three categories of methods for protecting oral health personnel from
radiation? - Answer-Distance, Shielding, and time
When is the thyroid collar recommended? - Answer-Intraoral Exam
Inherent Filtration - Answer-filtration that is built into the x-ray tube. Such as the oil
surrounding the tube and glass window
Added Filtration - Answer-refers to aluminum discs in the x-ray path between the
collimator and the tubehead in the x-ray machine.
Total Filtration - Answer-the sum of inherent and added filtration
what material and how much is used in a lead apron? - Answer-.25mm of lead or its
equivalent
what is the ideal place to stand or protection when taking a radio-graph? - Answer-
behind a structural barrier
this controls the size and shape of the useful beam - Answer-collimator
what is the technique of choice for exposing perriapical radio graphs - Answer-
paralleling technique
When taking a x-ray what angle should the operator stand from where the primary beam
exits the patient - Answer-45 Degrees
QUESTIONS AND ANSWERS
Use of lead apron in keeping with what concept of patient protection - Answer-ALARA
(As low as reasonably achievable)
This is required on all x-ray equipment to remove long wavelength x-rays - Answer-
Aluminum Filter
Maximum Permissible Dose - Answer-Dose of radiation the body can endure with little
or no injury within a specific period
Maximum Accumulated Dose - Answer-The maximum accumulated lifetime radiation
dose
Film Holding Device - Answer-reduces exposure to patient and movement of the film
and stabilizes film
What are the three categories of methods for protecting oral health personnel from
radiation? - Answer-Distance, Shielding, and time
When is the thyroid collar recommended? - Answer-Intraoral Exam
Inherent Filtration - Answer-filtration that is built into the x-ray tube. Such as the oil
surrounding the tube and glass window
Added Filtration - Answer-refers to aluminum discs in the x-ray path between the
collimator and the tubehead in the x-ray machine.
Total Filtration - Answer-the sum of inherent and added filtration
what material and how much is used in a lead apron? - Answer-.25mm of lead or its
equivalent
what is the ideal place to stand or protection when taking a radio-graph? - Answer-
behind a structural barrier
this controls the size and shape of the useful beam - Answer-collimator
what is the technique of choice for exposing perriapical radio graphs - Answer-
paralleling technique
When taking a x-ray what angle should the operator stand from where the primary beam
exits the patient - Answer-45 Degrees
