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Radiation Protection
ARRT Registry Review- Rad Protection
Question | Answer |
---|---|
What is the monthly dose limit for pregnant radiographers? | .5 mSv (158) |
How far away must a radiographer stand from the portable machine during exposure? | 6 feet (158) |
What type of cell is most sensitive? | Lymphocytes (160) |
What are the least sensitive cell types? | Nerve Cells (160) |
What type of interaction between radiation and target is most likely? | Indirect effect (160) |
What does indirect effect refer to interaction with? | radiation and water (160) |
What is the yearly dose limit for lens of the radiographers eyes? | 150 mSv (161) |
If an employee is subject to receive more than ___% of the annual radiation dose, monitoring is required. | 10% (161) |
What is radiolysis? | irradiation of water molecules (161) |
What interaction contributes the most to occupation dose? | Compton scatter (162) |
Every time an x-ray beam scatter its intensity at 1m from scattering object is what fraction of original intensity? | 1/1,000 (163) |
What is the annual occupational whole body dose limit? | 50 mSv (163) |
What crystal do the TLDs use? | Lithium Fluoride (163) |
What % of radiation to general public does medical and dental radiation compose? | 90% (165) |
What is the minimum lead thickness requirement for aprons? | .25 mm Pb (165) |
What detector does an OSL dosimeter use? | Aluminum Oxide (165) |
How tall must primary radiation barriers be? | 7 feet (165) |
What types of radiation is accounted for in occupational exposure? | Beta, x-ray, and gamma (166) |
What is the response for hair loss known as? | Epilation (167) |
What is the occupational unit of measurement? | rem (172) |
What are isotopes? | atoms with the same number but different mass numbers (173) |
What is the minimum SSD in fluoro? | 12" (173) |
What's most radiosensitive part of GI tract? | Small Bowel (175) |
An x-ray photon interacts with what in photoelectric effect? | Inner shell electron (176) |
What dosimeter type is considered most sensitive and accurate? | OSL Dosimeter (177) |