Refresher Part II Flashcards
X-ray support system frequently used
Consists of two perpendicular sets of rails
Allow for both longitudinal and transverse travel of X-ray tube
Ceiling support system
When x-yr is centered above the examination table at the standard SID, the x-ray is in a […]
Preferred detent position
Support system that has a single column with rollers at each end, one attached to the ceiling-mounted rail na the other attached to a floor-mounted rail.
Slides up and down the column as the column rotates
Floor-to-ceiling support system
Variation type support system that has the column siliconed on a single […] with one or two rails
Floor support system
Support system equipped in interventional radiology suites
Ceiling mounted and provide for very flexible x-yr tube positioning
C-Arm support system
External components of X-ray tube
Protective housing
Glass or metal enclosure
[protective housing] Special section where where x-rays are emitted
Window
X-rays that are emitted through the window
Useful beam
X-rays that escape through the protective housing
Leakage radiation
Level of reduction of leakage radiation in the protective housing
Less than 1 mGa/hr at 1 m
Guards against excessive radiation exposure and electric shock
Provides mechanical support and protects damage caused by rough handling
Protective housing
Function of oil in X-ray tube
Serves as both an insulator against electric shock and as a thermal cushion
Made of Pyrex and able to withstand the tremendous heat generated
Maintains a vacuum inside the tube which allows for more efficient production and longer tube life
Glass enclosure
Two electrodes in X-ray tube
Cathode ad anode
Maintain constant electric potential between the electrons of the tube current and the enclosure
Metal enclosure
Internal components of an X-ray tube [cathode]
Filament
Focusing cup