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MA208 Words to Know#4

Terms in this set (20)

Air kerma
SI system unit of exposure. Measures radiation intensity in air
Roentgen
conventional system unit of exposure
absorbed dose
amount of radiation absorbed by the irradiated tissue
Rad
conventional system units of absorbed dose
equivalent dose
describes the absorbed dose in the body based on type and energy of the radiation the person was exposed to
Gray
SI units for measuring exposure and absorbed dose
sievert
SI units of equivalent dose
Rem
Conventional system unit of equivalent dose
radiation weighting factor
number assigned to each different type of radiation based on the amount of biologic damage it can do.
entrance skin exposure
amount of exposure to patient at the skin level
short-term effects
radiation affects seen within three months of exposure
long-term effects
radiation effects not seen for several years after exposure
genetic effects
radiation of exposure to the reproductive cells of irradiated person
somatic effects
radiation exposure effects that affected the body of the person irradiated
erythema
radiation burn
gonads
female ovaries and male testes
ALARA principal
guiding philosophy of radiation protection, all radiation exposure to humans should be kept as low as possible
personal dosimeter
Devices for monitoring radiation exposure of radiation workers
effective dose
System to calculate the upper limit of occupational exposure permissible
cumulative effect dose
limits of radiation workers lifetime effective dose to his or her age in years times 10 mSv
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