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Terms in this set (80)
xrays are produced when?
fast moving electrons slam into a metal object then decelerates then gives off radiation
electrons kinetic energy is transformed into what kind of energy?
why is the tube vacuum sealed?
So electrons and air molecules don't interact. If they do, there wont be enough electrons to complete the exposure.
3 parts of the xray machine
high voltage generator
external xray tube components
1-support system (floor to ceiling, ceiling, c-arm)
3-enclosure (glass, metal)
internal xray components
1-cathode (filaments, focusing cup)
2-anode (rotating, stationary)
any tube with two electrodes is called what?
2 primary parts of the xray tube
anode and cathode
each is an electrode
what is the xray tube housed in?
protective metal, lead lined
-prevents electrical shock
-controls excessive radiation exposure
Equal intensity in all directions
what direction are xrays emitted?
emitted from the tube window (we use this kind)
other xrays that penetrate protective housing
how much leakage radiation should there be under maximum conditions?
less than 1mGya/hr at 1 meter away from the tube
what does the glass/metal enclosure hold?
cathode and anode in vacuum
-made of pyrex
-vacuum provides longer tube life
thinner glass through which the xrays are emitted
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