Radiation Dose Optimization — Flashcards

Flashcard 1: Alpha and beta rays are _____ type of ionizing radiation

Answer: particulate

Flashcard 2: CT head has a radiation exposure of _____ to 150 chest X-ray

Answer: 100

Flashcard 3: The absorbed dose of ionizing radiation _____ very gradually with greater depth and lower speed, suddenly rising to a peak when the proton is ultimately stopped. This is known as Bragg peak.

Answer: increases

Flashcard 4: CT abdomen has a radiation exposure of _____ chest X-ray

Answer: 500

Flashcard 5: Milliampere second determines the amount of _____

Answer: radiation exposure

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: