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