ARRT Test Prep questions and answers 2024

ARRT Test Prep questions and answers 2024 Main property of x-radiation that makes it potentially hazardous is its ability to? - ANSWERS Ionize Describe the damage potential of ionization? - ANSWERS 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? - ANSWERS Carcinogenesis - Stochastic/Non-Threshold Effect .1 Rem = ? Seivert - ANSWERS 1 Sievert 0.1 Gray = ? Rad - ANSWERS 10 Rad 1 Gray = ? Rad - ANSWERS 100 Rad What is Aplastic Anemia? When dose it occur? - ANSWERS 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 dosease as low as? - ANSWERS 25 Rads or .25 Gray What is Cataractogenesis? - ANSWERS Process of Cataract Formation Cataractogenesis occurs after acute or chronic exposures of how many Rads? - ANSWERS 200 Rads, 2 Gray Skin Eyrythemia (Skin Redning) occurs above? - ANSWERS Above 200 Rad, 2 Gray Temporary Sterility occurs in the adult male at acute doses of how many Rads? - ANSWERS 250 Rads, 2.5 Gray Pregnant radiographer should? (3) - ANSWERS 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? - ANSWERS OCCUPATIONAL exposures only. Monthly Dosimeter reports does NOT include? - ANSWERS Natural or Background Radiation What is the recommended monthly dose-equivalent limit for the fetus in the third trimester? - ANSWERS 0.5 mSv .05 Rem NRCP 116 Radiation workers cumulative dose-equivalent limit is determined by? - ANSWERS 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? - ANSWERS 50 mSv (5 Rem) When using a C-Arm mobile unit, the intensification tower should be? - ANSWERS As close as possible to the patient to reduce patient dose and unnecessary magnification. Radiation exposure in air = ? - ANSWERS 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? - ANSWERS Ion Chamber The quantity of radiation exposure measured by an ionization chamber would be? - ANSWERS Coulomb/Kilogram The C/Kg or R is usually the unit measured in? - ANSWERS Air dose List the 3 measurements that are more appropriate for measuring absorbed doses for radiation or occupational dose? - ANSWERS Gray (1) - Rad (100) Seivert (1) - Rem (100) Curie - Bacquerel What type of changes are used to measure occupational dose? (3) - ANSWERS Scintillation Biological Chemical Example of personnel monitor that measures radiation thru chemical change reaction? - ANSWERS Film Badge - Operate off Gurney-Mott theory. Explain the Gurney-Mott Theory...? - ANSWERS Describes how an x-ray photon changes silver halide into atomic silver in the film emulsion--a definite chemical change. How long can a film badge be worn? - ANSWERS No more than a month Why shouldn't film badges be worn greater than a month? - ANSWERS Extreme sensitivity to environmental conditions. TLD's operate thru? - ANSWERS Luminescence (NO chemical rx's occur) Pocket dosimeters can only work for? - ANSWERS 1 day and must be reset everyday. Upper reading limit of 200-300 rads Pocket dosimeter uses? - ANSWERS Electrical current as a measurement of charge. The type of personnel monitor that could be worn the longest is the? - ANSWERS OSD Optical stimulated detector can be worn up to? - ANSWERS 3 months and be sensitive to 2 mR Leakage radiation should NOT exceed how much mR at 1 meter from the scource? - ANSWERS 100 mR per hr 0.1 Rad per hr NCRP 102 According to Bushong, tabletop intensity should NOT exceed what? - ANSWERS 2.1 mR per min for each mA operating at 80 kVp. Under normal modes of operation, fluoroscopic procedures should NOT exceed? - ANSWERS 10 Roentg