RADIATION PROTECTION Flashcards
Which are cardinal principles of radiation protection?
Time, Distance, and Shielding
Which material is in the apron and gloves that shield the patient being radiographed from x-rays?
lead
Which method of radiation protection should be used first during a radiographic procedure?
restrict the x-ray beam to the primary area of interest
What use factor does the National Council on Radiation Protection and Measurements (NCRP) recommend for a wall?
1/4
According to the National Council on Radiation Protection (NCRP), which tissue has the highest tissue weight factor (W t)?
gonads
What areas adjacent to x-ray rooms are considered as full occupancy?
Wards, Laboratories, and Nurse’s stations
What is the rationale for the development of administrative protocols to maintain radiation exposure as low as reasonably achievable (ALARA)?
to prevent the stochastic effects caused by radiation
What is the annual effective dose limit for any healthcare worker who is not a radiologic technologist?
5 mSv
Which component of the x-ray tube reduces the intensity of leakage radiation?
Protective housing
Why must a student’s unsatisfactory radiographs be repeated in the presence of a qualified practitioner?
quality patient care and protection from radiation must be ensured and provided
What is scatter radiation?
radiation resulting from interaction with the patient
What should be the minimum length of an exposure cord during a mobile radiographic procedure?
2 meters (78.6 inches)
Which material is used along with lead for the preparation of flat contact shields?
Vinyl
What is the use of a radiolucent Plexiglas paddle?
it is used to immobilize the hands and fingers of young patients
What may be the radiation dose at the abdomen of a radiologic technologist who is pregnant, if the radiation monitor worn around the collar receives 5 mSv of radiation?
0.5 mSv
