Deck 5: Radiation Protection

Question 1

What is the name given to the protective flexible lead shield that is placed over the neck region during x-ray exposure?

A) Blanket
B) Thyroid collar
C) Neck tie
D) Patient napkin

Answer 1

Thyroid collar

Question 2

What is the purpose of aluminum filtration in the x-ray tubehead?

A) To remove the low-energy, long-wavelength x-rays
B) To remove the high-energy, long-wavelength x-rays
C) To remove the low-energy, most penetrating x-rays
D) To remove the low-energy, short-wavelength x-rays

Answer 2

To remove the low-energy, long-wavelength x-rays

Question 3

What is the maximum permissible dose (MPD) of whole-body radiation for persons occupationally exposed to radiation?

A) 500 mrem or 5 mSv per month
B) 500 mrem or 5 mSv per year
C) 5 rem per year
D) 100 mrem per year

Answer 3

5 rem per year

Question 4

What is used to direct the x-ray beam?

A) Tubehead
B) Cathode
C) Control panel
D) PID

Question 5

What is used to restrict the size and shape of the x-ray beam?

A) PID
B) Collimator
C) Control panel
D) Anode

Question 6

What concept states that all exposure to radiation must be kept to a minimum?

A) Maximum accumulated dose
B) Maximum permissible dose
C) ALARA
D) Lifetime dose

Question 7

What is the flexible shield placed over the patient's chest and lap to protect the reproductive and blood-forming tissues from scatter radiation?

A) PID
B) Thyroid collar
C) Lead apron
D) Lead collimator

Question 8

What is the most effective method of reducing a patient's exposure to x-radiation?

A) Fast film
B) Slow film
C) Lead apron
D) Thyroid collar

Question 9

What helps in stabilizing the receptor position in the mouth and reduces the chances of movement?

A) Collimator
B) Beam alignment device
C) PID
D) fast-speed film