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ARRT Radiography Exam (Mosby Review).
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ARRT Radiography Exam (Mosby Review).
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ARRT Radiography Exam (Mosby Review)Acceleration - ANS-the rate of change of speed per unit of time
air kerma - ANS-unit of exposure
alternating current - ANS-current of electrons oscillate back and forth
anaphylactic reactions - ANS-flushing, hives, nausea
anode heel effect - ANS-lower field intensity towards the anode in comparison to the
cathode due to lower x-ray emissions from the target material at angles perpendicular to
the electron beam
aqueous iodine compound - ANS-water soluble sterile contrast agent
assault - ANS-action that causes fear of harm
Atomic mass - ANS-number of protons plus number of neutrons; represented by the
letter A
Atomic nucleus - ANS-contains protons (positive charges) and neutrons (no charge);
contains most of the mass of an atom
Atomic number of an atom - ANS-equals the number of protons in the nucleus;
represented by the letter Z; the atomic number determines the chemical element; all
chemical elements are represented in the periodic table of the elements
attenuation - ANS-absorption and scatter of the x-ray beam as it passes through the
patient
attenuation - ANS-partial absorption of the energy of an xray beam as it traverses an
object
automatic brightness control - ANS-adjusts mA and kVp to make an optimum image
autotransformer - ANS-used in xray circuit to provide an increase in voltage before the
step up transformer; kvp settings are made here
, battery - ANS-inappropriate touching that causes harm
Beam quality is expressed using what unit of measurement? - ANS-half value layer
beam restriction - ANS-limits size of area of xray beam; affects receptor exposure and
contrast due to the reduction of scatter being produced
becquerel - ANS-unit of activity
bit depth - ANS-number of bits per pixel; greater bit depth means greater level of grays
in an image
Cardinal principles of radiation protection - ANS-time, distance, shielding
cardiovascular reactions - ANS-hypotension, tachycardia, cardiac arrest
chemical energy - ANS-energy from a chemical reaction
common positive contrast agent - ANS-iodine or barium
compton effect - ANS-scatter of x-ray photons in the body
conductor - ANS-material that allows the free flow of electrons
contrast - ANS-visible difference between two areas of brightness on an xray
contrast enhancement - ANS-part of post processing, altering image to display varying
brightness
contrast improvement factor - ANS-measure of grids ability to improve contrast
contrast resolution - ANS-smallest change in signal that can be detected by the receptor
controlled area - ANS-occupied by people trained in radiation safety and wear radiation
badges/monitors
cumulative effective dose - ANS-lifetime occupational exposure must not exceed
radiographer's age x 10 mSv
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