FINAL PQ PART I Flashcards
an operator must know what for operating radiographic equipment?
how to properly operate x-ray machine and features specific to that unit
how to properly position patient
how to control image quality (kVp, mA, grid)
how to minimize radiation levels (collimation, special dose rate, controls)
how radiation is distributed in the room
position for personnel
how to use shielding devices
applicable laws and institution policies
metric system prefixes most commonly used?
kilo
milli
micro
most common unit used from physics?
power, measured in watts (J/s)
what is this the defn of, and answer the following after?
the amount of energy that electrons have in each shell
so closer to nucleus means?
bound electrons means?
binding energy (BE)
increase in electron BE
neg. total energy
what metal is used in the x-ray machine?
tungsten
these components? of the electromagnetic waves are directed this way to each other?
sinusoidal and magnetic fields
directed perpendicular to each other
what is this defn?
number of wave peaks passing per second is the frequency
electromagnetic waves (EM)
what is the SI unit of the electromagnetic waves?
hertz (Hz)
what is the equation for velocity?
wavelength x frequency
what is this principle?
this is a principle that states that EMs have wavelike properties, absorbed and emitted in energy bundles called photons and each photon carries very little energy
wave-particle duality for the Einstein relation
what is this defn?
EM radiation is also absorbed and emitted in discrete, localized energy bundles (particulate) called _____?
photons
the wave particle duality is backed by this equation?
E=h x f, where h = Planck’s constant
name this defn?
the x-ray electromagnetic radiation energy range is what?
ionizing radiation
T/F, high energy EM can ionize matter?
T
name this defn?
process whereby an atom gains or loses electrons typically in the outer shell
note also that x-rays have enough energy to cause atoms to ionize
ionization
