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RADT 465

ARRT registry review covering radiation physics, biology and protection

What are the SI units of measurement? Coulomb/kg, gray, sievert, and bequerel
What are the traditional units? Roentgen, rad, rem, and curie
What is the SI unit for rad? gray
What is the SI unit for Curie? bequerel
What is the SI unit for rem? sievert
What is the SI unit for Roentgen? Coulomb/kg
What is the minimum lead equivalent for lead aprons? 0.5 mm Pb/eq
What is the minimum lead equivalent for gloves? 0.25 mm Pb/eq
What is the minimum lead equivalent for thyroid shields? 0.5 mm Pb/eq
What is the minimum lead equivalent for glasses? 0.35 mm Pb/eq
What is the minimum lead equivalent for bucky slot covers? 0.25 mm Pb/eq
What is the minimum lead equivalent for fluoroscopy drapes? 0.25 mm Pb/eq
What is the minimum lead equivalent for clear lead-plastic over head protective barrier? 0.5 mm Pb/eq
Which line represents the model utilized for radiation protection? non-threshhold, linear curve
Which line represents nonstochastic effects of significant radiation exposure? threshold, linear curve
Which line represents a model used for radiation therapy? threshold, nonlinear curve
Which line would represent stochastic events? nonthreshold, linear curve
What is the annual occupational radiation dose? 50 mSv or 5 rem
What is the annual occupational lens of the eye dose? 150 mSv or 15 rem
What is the annual occupational skin, hands, and feet dose? 500 mSv or 50 rem
What is the cumulative occupational radiation dose? 10 x age or 1 x age
What is the annual public radiation dose? 5 mSvor 0.5 rem
What is the annual public lens of the eye, skin, hands and feet dose? 50 mSv or 5 rem
What is the per month occupational embryo radiation dose? 0.5 mSv or 0.05 rem
What is the entire gestation occupational embryo radiation dose? 5 mSv or 0.5 rem
How long are dosimeter reports kept? For as long as the employee is employed at the facility
What does the letter "M" mean on dosimeter reports? below minimal measurable dose
What is the alpha particle quality factor? 20
What is the protons and fast neutrons quality factor? 10
What is the beta particles, gamma rays, and x-rays quality factor? 1
What are the three parts of the Law of Bergonie and Tribondeau? Radiosensitivity increases with mitotic activity, radiosensitivity decreases with maturity and radiosensitivity decreases with specialization
What is radiation interaction with water? radiolysis
How thick should a primary barrier be? 1/16"; if its a wall it has to be at least 7'
How thick should a secondary barrier be? 1/32"; must overlap primary barrier by at least 1/2"
What are equal doses of radiation delivered with time interval separations? fractionation
What is a radiation dose delivered continuously, but at a lower dose rate? protraction
What theory states that a DNA molecule is hit with radiation and dies? target theory
What is the rate of energy deposited per unit track length through an absorber? linear energy transfer LET
What is the sensitivity of tissues in aerobic v. anaerobic state? oxygen enhancement ratio OER
What means that radiation with different LET will induce different biologic responses? relative biologic effectiveness RBE
What is human tissue OER? 3
What are the 4 ARS stages in order? prodronal, latent, manifest and recovery/death
What are the 3 ARS syndromes? hematapoietic, gastrointestinal and cerebrovascular/CNS
What cell types are the most sensitive to radiation? white blood cells and red blood cells
What cell types are the least sensitive to radiation? bone cells and muscle cells
What tissue type are the most sensitive to radiation? gonads
What tissues types are the least sensitive to radiation? bone surface and skin surface
Which radiation interaction involves an outer shell electron? Compton
Which radiation interaction is influenced by atomic number and mass density? photoelectric
Which radiation interaction has no absorption? coherent
Which radiation interaction involves an inner shell electron? photoelectric
Which radiation interaction involves the whole atom? coherent
Which radiation interaction has partial absorption? Compton
Which radiation interaction is influenced by mass density? Compton
Which radiation interaction has full absorption? photoelectric
Which radiation interaction does not have a specific influence? coherent
Which radiation interaction occurs below 10 kV? coherent
Created by: lnemge1