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Radiation Protection

ARRT Registry Review- Rad Protection

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)
Created by: magrissom