Ch. 38.3 Radiation Safety

What is the number one cause of unnecessary radiation?

• Sunlight

• Cell Phones

• Retakes

• Tv

When dental images are prescribed and properly taken, the benefit of disease detection far outweighs the risk for biologic damage associated with receiving small doses of radiation?

• True

• False

Whose responsibility is it to prescribe only images that are required for diagnostic purposes.

• Dental Assistant

• Dental Hygienist

• Patient

• Dentist

The part of the dental x-ray unit that's responsible for removing the low-energy, long-wavelength, least penetrating x-rays from the beam is the?

• Lead Collimator

• PID

• Aluminum Filter

A dental x-ray machine operating at 70kvp or greater must have an aluminum filtration of

• 15mm

• 2mm

• 2.5mm

• 5mm

The piece of equipment used to restrict the size and shape of the beam to reduce x-ray exposure is the?

• Aluminum Filter

• Lead Collimator

• PID

Which size PID is more effective in reducing the amount of exposure to the patient?

• 8 inch

• 12 inch

• 10 inch

• 16inch

A lead apron and a thyroid collar must be used on all patients for all exposures?

• True

• False

The use of fast speed film reduces the amount of radiation exposure to the patient.

• True

• False

The use of what piece of equipment helps keep the patients fingers and hands from being exposed to radiation.

• Fast Speed Film

• Image receptor holding devices

• Exposure technique