ARRT Registry Review Covering Radiation Protection
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| What is the annual whole body equivalent dose limit for an occupational worker? | 50 mSv or 5 rem Pg. 148
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| What is the annual occupational whole body dose equivalent for students under the age of 18? | 1 mSv or 0.1 rem Pg. 148
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| What is the annual occupational dose equivalent limit for thyroid, skin, and extremities? | 500 mSv or 50 rem Pg. 148
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| Effects that will not occur below a particular threshold dose and that will increase in severity as time goes on is known as? | Nonstochastic deterministic Pg. 148
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| Least radiosensitive cells in the human body? | Nerve cells Pg. 149
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| This type of effect usually occurs with high LET radiations and when ionized occurs at the DNA molecule itself? | Direct effect Pg. 149
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| This effect occurs when ionization takes place away from the DNA molecule in the cell water? | Indirect effect Pg. 149
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| Radiation effects that appear days or weeks following exposure (early effects) are in response to high doses of radiation is known to be? | Acute radiation syndrome Pg. 149
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| This type of dosimeter contains an ionization chamber containing air and a needle read out meter? | Pocket dosimeter Pg. 150
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| Represents the relative tissue radiosensitivity of irradiated material? | Tissue weighting factor (Wt) Pg. 150
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| Number assigned to different types of ionizing radiation in order to better determine their effect on tissue? | Radiation weighting factor (Wr) Pg. 150
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| Relatively low energy photon uses all its energy to eject an inner shell electron, leaving a vacancy? | Photoelectric effect Pg. 150
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| Low energy photon interacts with an atom, but causes no ionization is known as? | Classic scatter Pg. 151
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| Another name for classic scatter is known as? | Thompson scatter Pg. 151
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| What kind of filter is used to decrease patient skin dose by absorbing the low energy photons? | Aluminum filter Pg. 152
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| Radiation delivered in portions over a period of time is known as? | Fractionated radiation Pg. 153
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| Unit of exposure often used to express the quantity of ionizations in the air? | Roentgen Pg. 154
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| Known as dry, or peeling of the skin? | Dry desquamation Pg. 155
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| Tissues with ______ density absorb more of the x-ray beam? | Greater Pg. 156
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| Atoms with the same mass number but different atomic number is known as? | Isobars Pg. 156
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| These atoms have the same number of neutrons but different atomic numbers? | Isotones Pg. 156
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| These atoms have the same atomic number and mass number? | Isomers Pg. 157
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| Secondary radiation barriers require which thickness of shielding? | 1/32 Pg. 157
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| RBE and LET have what kind of effect? | Direct Pg. 161
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| This term refers to tissue without oxygen? | Anoxic Pg. 165
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| This term refers to tissue with little oxygen? | Hypoxic Pg. 165
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