Shielding Design and Calculations — Flashcards

Flashcard 1: _____ is used to monitor radiation dose in India

Answer: TLD badge (Thermoluminescent dosimeter)

Flashcard 2: SI unit of absorbed radiation is _____ and the common unit is RAD.

Answer: Gray

Flashcard 3: CT abdomen has a radiation exposure of _____ chest X-ray

Answer: 500

Flashcard 4: Milliampere second determines the amount of _____

Answer: radiation exposure

Flashcard 5: _____ rays have the maximum tissue penetrating ability.

Answer: Gamma

Flashcard 6: Optical Coherence Tomography uses the principle of _____

Answer: near-infrared light interferometry

Flashcard 7: <_____ rads/year is the permissible level of radiation

Answer: 5

Extra: 

Flashcard 8: wearing _____ decreases dose of x rays by >90%

Answer: lead aprons

Extra: 

Flashcard 9: The average annual radiation dose received by an individual from all sources (natural + medical) is _____ rad.

Answer: 0.2-0.3

Extra: Natural background radiation accounts for ~0.1-0.2 rad/year, while medical exposures (diagnostic X-rays, etc.) contribute additional dose, totaling an average of approximately 0.2-0.3 rad per year for an individual.

Flashcard 10: _____ rays is the most harmful ionising radiation

Answer: alpha

Extra: