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RADT465 RadProtectio
ARRT registry review covering Radiation Protection
Question | Answer |
---|---|
linear responses are those where the response is____ proportional to the dose received | directly |
refers to the dose below which no harmful effects are likely to occur | threshold |
effects that occur randomly and are all or nothing responses | stochastic |
photoelectric effect produces___ scale contrast | short |
what scatter is responsible for radiation fog on an image | compton |
carcinogenesis, cataractogenesis, and embryologic effects are all examples of | late effects |
the effect that has a threshold and is nonlinear | nonstochastic |
the effect that is linear and has no threshold | stochastic |
product of the absorbed dose and its radiation weighting factor | equivalent dose |
the rate at which radiation deposits energy as it passes through tissue | LET |
prodromal stage symptoms occur ___ following exposure | one hour to two days |
speed of light formula | frequency X wavelength |
types of beam restrictors | aperture diaphragm, cone/cylinder, collimator |
gonadal shielding is used when the gonads are with in __ of the collimated filed | 5 cm. |
table top intensity of fluoro beam must be fewer than | 10 R/min |
guidelines for reducing radiographic exposure | time, distance, shielding |
lead walls and doors are ___ barriers | primary |
Kinetic energy released in matter | kerma |
TLD are made of | crystaline chips of lithium fluoride |
Rad is measured in | gray |
rem is measured in | sivert |
the distance between two consecutive wave crests | wavelength |
frequency is measured in | Hertz |
photoelectric effect is more likely to occur in absorbers having high | atomic number |
what personal monitoring device uses an aluminum oxide detector | OSLD |