Emission and HT generation, Filament controls and Rotating Anodes Flashcards
1
Q
What is the aim of the x ray generator ?
A
Switch on and off every few milliseconds. Fluoroscopy is on for longer periods but has a lower dose.
2
Q
What qualities are necessary for an x ray tube ?
A
thick glass x ray tube to withstand differential pressure of the vacuum inside and the atmospheric pressure outside. (roughly 1-2mm)
3
Q
Why does the x ray tube contain a vacuum ?
A
to prevent an electrical explosion.
4
Q
What is aluminium used for in the x ray tube ?
A
used to filter and improved beam quality . Must be measured in its thickness and calibrated properly before fitting. Must be done individually for each tube.
5
Q
What width of aluminium filtration must all standard x rays be bought up to ?
A
6
Q
A
