Radiation Health & SafetyQuestion 27 of 100
Which arrangement provides the BEST operator protection during an exposure?
a.Standing 6 feet away in an open hallway facing the patient
b.Standing beside the patient wearing a lead apron
c.Holding the exposure button while leaning around the doorframe into the operatory
d.Standing behind a properly constructed protective barrier or wall while making the exposure
Explanation
A properly constructed barrier or wall containing adequate shielding is the most effective operator protection, because it stops scatter rather than merely reducing it with distance. Standing 6 feet away in the open is acceptable only when no barrier exists. Wearing a lead apron beside the patient and leaning into the room both place the operator in the scatter field unnecessarily.
Law Reference: NCRP Report No. 145: Radiation Protection in DentistryPractice all 100 questions free — no signup required.
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