Radiation Safety Exam Questions and
Answers
What is radiation? - Answer-the transfer of energy as electromagnetic waves
What is ionizing radiation? - Answer-any type of radiation that is capable of removing an
orbital electron from the atom with which it interacts
Types of ionizing radiation - Answer-x-rays and gamma rays
What is the most common type of man-made radiation? - Answer-Diagnostic x-rays, CT
What is the most common type of natural environment radiation? - Answer-Radon
ALARA - Answer-As Low As Reasonably Achievable
Filtration - Answer-Removing low energy x-rays before they reach the patient (metal
filters usually copper or aluminum), absorbs them
Intensifying Screens - Answer-Radiation to light conversion within the imaging device
(shortens exposure time and reduces patient dose), no overexposing
Collimation (field of view) - Answer-Use collimators to limit exposed areas, narrow down
rays
What is basic protection apparel? - Answer-lead aprons and gloves and personal
radiation monitoring devices (dosimeters)
What initiated basic protection apparel? - Answer-In 1904, there was the first radiation
fatality and radiologists were reported to have an increase in blood disorders (aplastic
anemia and leukemia)
Matter - Answer-Anything that occupies space, composed of fundamental building
blocks called atoms
What are the 3 cardinal rules of radiation protection? - Answer-time, distance, shielding
Gya - Answer-radiation dose in air, exposure
Gyt - Answer-radiation dose in tissue/absorbed dose, short term effects
Sv - Answer-effective dose, long term effects
Bq (Becquerel) - Answer-Radioactivity
Answers
What is radiation? - Answer-the transfer of energy as electromagnetic waves
What is ionizing radiation? - Answer-any type of radiation that is capable of removing an
orbital electron from the atom with which it interacts
Types of ionizing radiation - Answer-x-rays and gamma rays
What is the most common type of man-made radiation? - Answer-Diagnostic x-rays, CT
What is the most common type of natural environment radiation? - Answer-Radon
ALARA - Answer-As Low As Reasonably Achievable
Filtration - Answer-Removing low energy x-rays before they reach the patient (metal
filters usually copper or aluminum), absorbs them
Intensifying Screens - Answer-Radiation to light conversion within the imaging device
(shortens exposure time and reduces patient dose), no overexposing
Collimation (field of view) - Answer-Use collimators to limit exposed areas, narrow down
rays
What is basic protection apparel? - Answer-lead aprons and gloves and personal
radiation monitoring devices (dosimeters)
What initiated basic protection apparel? - Answer-In 1904, there was the first radiation
fatality and radiologists were reported to have an increase in blood disorders (aplastic
anemia and leukemia)
Matter - Answer-Anything that occupies space, composed of fundamental building
blocks called atoms
What are the 3 cardinal rules of radiation protection? - Answer-time, distance, shielding
Gya - Answer-radiation dose in air, exposure
Gyt - Answer-radiation dose in tissue/absorbed dose, short term effects
Sv - Answer-effective dose, long term effects
Bq (Becquerel) - Answer-Radioactivity
