Tube Components
The part of the tube that produces electrons
What is "The Filament"
What controls the quanity of X-rays Produced?
what is "mAs" or "mA"
These are the two methods of x-ray production
what is "Bremsstrahlung (brems) and characteristic
This happens if the rotor bearings wear out
what is "tube becomes noisy or fails to rotate"
Filament materials are chosen primarily for their___
what is "High melting point"
the purpose of the focusing cup
What is " To direct electrons toward the anode"
This cooling method, used in the X-ray tube housing, helps prevent tube overheating
What is oil cooling (or dielectric oil)
This interaction contributes to image fog and reduces contrast
what is "Compton scatter"
The majority of occupational dose to radiographers comes from this type of secondary radiation interaction.
what is "Compton Scatter"
This part of the tube assembly spins the anode
What is "The Stator"
The rotating part of the anode is called?
What is "The rotor"
This function of the X-ray tube housing ensures radiation is emitted only in a controlled direction
What is beam collimation (or shielding)
this determines the energy of a characteristic x-ray photon
what is " the binding energy difference between electron shells"
This sudden failure occurs when the glass envelope cracks, allowing air inside and stopping electron flow.
Tungsten is used for the anode because of it's____, ____, and ____
waht is"High atomic number, High menting point, and Heat conductivity
Metal used for the target in most x-ray tubes?
What is "Tungsten"
This tube housing maintains this enviorment to allow free electron travel
What is a vacuum
This high-energy interaction occurs only at energies above 1.02 MeV, creating an electron and a positron
What is "Pair production"
Failing to use warm-up techniques can cause this type of damage to the anode caused by rapid thermal expansion.
What is "Anode cracking" or (thermal shock)
What is the advantage of a smaller focal spot?
what is "Better spatial resolution"
What surrounds the tube to prevent leakage radiation?
What is "Lead-lined housing"
This process occurs at the cathode to allow a controlled release of electrons.
What is thermionic emission
Also called classical or Thompson scatter, this interaction involves a low-energy photon that changes direction without ionization
What is "Coherent Scatter"
Taking rapid successive exposures without allowing cooldown can cause this buildup, risking tube burnout
What is "excessive heat or heat accumulation"
This effect describes the variation in x-ray intensity across the beam
What is "The anode heel effect"