Radiation Protection and Health Effects Quiz

Play an AI-generated podcast conversation about this lesson

What is the principle of dose limitation?

To prevent stochastic effects completely (correct)

To expose workers to an acceptable level of deterministic effects

To prevent workers from experiencing any radiation exposure

To expose workers to a minimal level of radiation

Who recommends the dose limits for radiation exposure?

The National Institutes of Health

The International Commission on Radiological Protection (correct)

The World Health Organization

The American Dental Association

What does occupational exposure refer to?

Exposure incurred by workers during their work, except for medical exposure and natural background radiation (correct)

Exposure incurred by workers during medical procedures

Exposure incurred by workers during non-medical activities

Exposure incurred by workers when not wearing protective gear

What happens if radiation workers exceed the annual dose limits?

They will be prevented from continuing in their occupations for the rest of the year Signup and view all the answers

What is one consideration to protect the patient during dental x-rays?

Using lead aprons and thyroid collars Signup and view all the answers

What is one consideration to protect the operator during dental x-rays?

Standing outside the x-ray room during exposure Signup and view all the answers

What should the primary beam be directed to during dental x-rays?

The patient Signup and view all the answers

What is recommended for periapical and bitewing radiographs to align the film precisely with the collimated beam?

Using film holders that align the film precisely with the collimated beam Signup and view all the answers

What type of screens should be used in panoramic x-rays to protect patients from unnecessary radiation exposure?

"rare-earth screens" Signup and view all the answers

What should be used in extraoral films to minimize patient exposure?

Intensifying screens Signup and view all the answers

How should the operator stand in relation to the patient during dental x-ray exposure?

At least 6 feet (2 m) from the patient, at an angle of 90 to 135 degrees to the central ray of the x-ray beam. Signup and view all the answers

What is used to decrease scattering radiation during dental x-rays?

Increase source to skin distance Signup and view all the answers

What is the purpose of the radiation protection standard settings defined by the International Commission on Radiological Protection (ICRP)?

To prevent the occurrence of deterministic effects of radiation Signup and view all the answers

What are deterministic effects of radiation?

Health effects with increasing severity as the dose increases Signup and view all the answers

How do stochastic effects of ionizing radiation occur?

By chance, generally occurring without a threshold level of dose Signup and view all the answers

What is the principle of 'justification' in radiation protection?

To ensure radiation benefits outweigh risks Signup and view all the answers

What is the principle of 'optimization' in radiation protection?

To keep radiation exposure as low as reasonably achievable (ALARA) Signup and view all the answers

What is the principle of 'dose limitation' in radiation protection?

To keep exposure within prescribed dose limits Signup and view all the answers

Which type of health effect is related directly to the absorbed radiation dose?

Deterministic effects Signup and view all the answers

What is the relationship between the severity of stochastic effects and the dose received?

Severity is independent of the dose received Signup and view all the answers