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Radiation that occurs naturally in the earth's crust and atmosphere are known as what kind of radiation?
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The ________ response relationship is proportional to dose.
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RADT 456 Rad. Prot.
ARRT registry review covering Radiation Protection content area
| Question | Answer |
|---|---|
| Radiation that occurs naturally in the earth's crust and atmosphere are known as what kind of radiation? | Natural background radiation pg. 226 |
| The ________ response relationship is proportional to dose. | Linear pg. 231 |
| Carcinogenesis, cataractogenesis, embryologic effect, and lifespan shortening are examples of what type of effect? | Late effects pg. 231 |
| This law addresses relative tissue sensitivity and states that stem (undifferentiated, or precursor) cells, young or immature cells, and highly mitotic cells are particularly radiosensitive. | Law of Bergonie and Tribondeau pg. 232 |
| This refers to the sum of the products of the dose equivalent to various irradiated organs or tissues and their applicable weighting factors. | Effective dose equivalent pg. 233 |
| The rate at which radiation deposits energy as it passes through tissue is known as _________ __________ ________. | Linear energy transfer (LET) pg. 233 |
| This describes the first 10 days following onset of the menses as the safest time to schedule elective procedures of the abdomen/pelvis. | 10-day rule pg. 237 |
| What is the most effective beam restricting device? | Collimators pg. 248 |
| This type of filtration is built into the x-ray tube and its tube housing. | Inherent filtration pg. 251 |
| Equipment operating above 70 kV must have a minimum total filtration of _____mm Al equivalent. | 2.5 pg. 260 |
| The SSD must be at least ___ inches in mobile fluoroscopic equipment. | 12 pg. 261 |
| The table top intensity of the fluoroscopic beam must be fewer than ____R/min. | 10 pg. 269 |
| A Bucky-slot cover, lead aprons, and lead gloves must all provide at least ____mm Pb equivalent of protection. | 0.25 pg. 268-269 |
| This type of barrier consists of walls with 1/16-inch lead thickness and 7-feet height. | Primary protective barriers pg. 270 |
| What is the gestational dose limit to the fetus for the entire gestational period? | 0.5 rem pg. 272 |
| What is the unit of measurement of ionization in air? | Roentgen pg. 279 |
| What is the rad SI unit of measurement? | Gy (gray) pg. 280 |
| What is the rem SI unit of measurement? | Sv (Sievert) pg. 280 |
| This is a number that is assigned to different types of ionizing radiations so that their effects may be better determined. | Radiation weighting factor pg. 280 |
| This represents the relative tissue radiosensitivity of the irradiated material. | Tissue weighting factor pg. 280 |
| What do thermoluminescent dosimeter (TLD) contain to store the energy associated with exposure to ionizing radiation? | Lithium Fluoride (LiF) crystals pg. 283 |
| The dose limit for occupationally exposed individuals 18 years or older is _____. | 5 rem pg. 286 |
| What is the formula to determine the lifetime cumulative exposure for the occupationally exposed individual? | 1 rem X age in years pg. 287 |
| The monthly dose to a fetus must not exceed _____. | 0.05 rem |
| This is defined as leakage and/or scattered radiation. | Secondary radiation pg. 270 |
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