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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 |