ARRT Exam Prep Top latest complete solution

Main property of x-radiation that makes it potentially hazardous is its ability to? - Ionize Describe the damage potential of ionization? - Chain reaction in the human body that may eventually cause biologic damage. X-rays are from the Electric Magnetic Spectrum or radiation energy and is considered harmful in high energy ranges. What is the most likely potential hazard working with diagnostic radiology? - Carcinogenesis - Stochastic/Non-Threshold Effect .1 Rem = ? Seivert - 1 Sievert 0.1 Gray = ? Rad - 10 Rad 1 Gray = ? Rad - 100 Rad What is Aplastic Anemia? When dose it occur? - All types of blood cells: Red & White 25 Rads A decrease in blood count is the earliest response seen to dose radiation. It can occur at disease as low as? - 25 Rads or .25 Gray What is Cataract genesis? - Process of Cataract Formation Cataract genesis occurs after acute or chronic exposures of how many Rads? - 200 Rads, 2 Gray Skin Eyrythemia (Skin Rending) occurs above? - Above 200 Rad, 2 Gray Temporary Sterility occurs in the adult male at acute doses of how many Rads? - 250 Rads, 2.5 Gray Pregnant radiographer should? (3) - Always practice TDS Has legal right for re-assignment of duty Never confuse collar badge with waist badge Monthly dosimetry reports is based on what? - OCCUPATIONAL exposures only. Monthly Dosimeter reports does NOT include? - Natural or Background Radiation What is the recommended monthly dose-equivalent limit for the fetus in the third trimester? - 0.5 mSv .05 Rem NRCP 116 Radiation workers cumulative dose-equivalent limit is determined by? - Age x 10 mSv Age x 1 Rem NCRP 110 What is the Occupational radiation dose equivalent limit for stochastic effects to the whole body? - 50 mSv (5 Rem) When using a C-Arm mobile unit, the intensification tower should be? - As close as possible to the patient to reduce patient dose and unnecessary magnification. Radiation exposure in air =? - Roentgens - Ionization in air dose measurement. Electrical current being generated by a charge created in air thru ionization by x/gamma radiation is called a? - Ion Chamber The quantity of radiation exposure measured by an ionization chamber would be? - Coulomb/Kilogram