Radiographic Imaging and Exposure Ch.
2
The X-ray tube is the most important part of the X-ray machine because that's where the ______ are
produced. - correct answer ✔✔X-rays
The production of X-rays requires a rapidly moving stream of electrons that are suddenly _________. -
correct answer ✔✔Stopped
The ___________ of an X-ray tube is a negatively charged electrode, that comprises a filament and
focusing cup. - correct answer ✔✔Cathode
Is a coiled tungsten wire, which is the source of electrons during X-ray production. - correct answer
✔✔Filament
Most X-ray tubes are referred to as ______________ tubes because they have two filaments: one large
and one small. - correct answer ✔✔Dual-focus
Made of nickel and nearly surrounds the filament. It is open at one end to allow electrons to flow freely
across the tube from cathode to anode and its purpose is to focus the stream of electrons. - correct
answer ✔✔Focusing cup
The _______ of an X-ray tube is a positively charged electrode composed of molybdenum, copper,
tungsten, and graphite. - correct answer ✔✔Anode
The anode consists of a __________ and, in rotating anode tubes, a __________ and _____________ -
correct answer ✔✔target, stator, rotor
The target is typically ______________% tungsten material and __________% rhenium - correct answer
✔✔90% tungsten and 10% rhenium
, The targets movement can either be ______________ or _______________ - correct answer
✔✔rotating, stationary
True or False
Tubes with rotating targets are more common than tubes with stationary ones. - correct answer ✔✔True
Rotating anodes are manufactured to rotate at a set speed ranging from ___________ to ____________
revolutions per minute (rpm). - correct answer ✔✔3,000 to 10,000
The ___________ is a metal that abruptly decelerates and stops electrons in the tube current, allowing
the production of X-rays. - correct answer ✔✔Target
Tungsten is used for both rotating and stationary tubes because it has a high atomic number of ______
for efficient x-ray production and a high melting point of 3400 degrees celsius - correct answer ✔✔74
The face of the anode is ____________ to help the x-ray photons exit the tube - correct answer
✔✔angled
Rotating targets generally have a target angle ranging from _____° to _____° - correct answer ✔✔5-20
In order to turn the anode during xray production, a rotating anode tube requires a _________ and
_________. - correct answer ✔✔Stator, rotor
An electric motor that turns the rotor at very high speed - correct answer ✔✔Stator
Made of copper.
Is rigidly connected to the target through the anode stem, causing the target to rapidly rotate during xray
production. - correct answer ✔✔Rotor
During X-ray production, most of the energy produced at the anode is __________. - correct answer
✔✔Heat
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