Practice Quiz

ADA NBDHE Dental Hygienist

Category - Provision of Clinical Dental Hygiene Services

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Which of the following techniques limits radiation exposure to the operator?
  1. Positioning at an angle of 90-135 degrees to the beam
  2. Beam collimation
  3. Lead apron
  4. Position indicating device
Explanation
Answer: A - Positioning at an angle of 90-135 degrees to the beam limits radiation exposure to the operator.
The operator limits exposure to unnecessary radiation by standing within a safe range of 90-135 degrees of the direction of the beam. Techniques such as collimation, using a position indicating device, and wearing a lead apron are all intended to reduce radiation to the patient.
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