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RAD 107 exam 1

QuestionAnswer
What is the operating console? Controls kVp (beam energy), mA (quantity), time, AEC
What is line voltage compensator? stabilizes incoming power
What is high voltage generator? Converts low voltage to high voltage for X-ray tube
What are teh disadvantages of the three phase equipment? -expensive -complex maintenance -high patient dose if not adjusted properly
What is the Formula for calculating high voltage generator power? kW= (kVp•mA)/1000
What is Arcing? Electrical discharge inside tube (tube failure )
What is the rotating anode? Spins to spread heat (prevents damage)
What is the focal spot? Where electrons hit target (Smaller = sharper image, more heat)
What is the formula for heat units for 3 phase, 6 pulse x-ray machine? (kVp)(mA)(times)(1.35)
What is the tube rating chart? Tells max safe exposure before overheating
What is a glass envelope? A vacuum that prevents electron collision with air
What are the tube failure causes? -Overheating -Rotor failure -Filament evaporation -Arcing
What is the line focus principle? Angled target (large actual focal spot, small effective focal spot)
What is thermionic emission? Heating filament (electrons “boil off”)
What is AEC? -(Automatic Exposure Control) -Stops exposure when enough radiation hits detector -Prevents over/underexposure
Created by: Aaliyah602
 

 



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