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Bushong ch 7 Test

Enter the letter for the matching Answer
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1.
What is the name of the most frequently used support system?
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2.
What is the most common cause of tube failure?
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3.
What components make up the external structure of the x-ray tube?
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4.
What is the target of a rotating anode coated with?
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5.
How much of the electron interaction with the anode turned into heat?
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6.
This occurs when the electrons bounce off the focal spot and land on other areas of the target, causing x-rays to be produced outside the focal spot(scatter).
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7.
What is the stator?
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8.
What is the target of the anode?
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9.
What components make up the induction motor?
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10.
Where is the stator located in the x-ray tube?
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11.
Due to the line focus principle, the target angle is made _______, so the effective focal spot is ________.
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12.
The actual focal spot size is ______ than the effective focal spot size in the line focus principle.
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13.
This occurs when the tungsten vaporizes,coats the inside of the glass housing, and then causes the current to stray.
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14.
What does it mean when a tube has 2 focal spot sizes or a dual tube?
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15.
What is a rotating anode made of?
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16.
What is the positive side of the x-ray tube called?
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17.
When imaging a larger patient, the ______ should be directed over the larger part.
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18.
When is the small focal spot used?
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19.
what is the rotor?
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20.
What is the anode heel effect?
A.
off focus radiation
B.
anode
C.
rotor, stator
D.
tungsten alloy
E.
a shaft made of copper and soft iron
F.
tungsten
G.
it has 2 filaments
H.
a series of magnets placed around the neck of the tube
I.
when better spatial resolution is required
J.
cathode
K.
ceiling support
L.
arcing
M.
99%
N.
smaller, smaller
O.
support structure, protective housing, glass or metal enclosure
P.
larger than
Q.
When the intensity is greater on the cathode side than the anode
R.
tungsten vaporization
S.
the area of the anode struck by electrons from the cathode
T.
outside the glass enclosure
Type the Answer that corresponds to the displayed Question.
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21.
The boiling off of electrons is known as?
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22.
What turns the rotating anode?
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23.
The smaller the ______ the greater the heel effect.
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24.
WHat is the actual source of x-rays in the tube?
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25.
The ______ _______ provides mechanical support.
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26.
What are the 2 parts of the cathode?
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27.
Name the 2 types of anodes.
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28.
What is the filament made of?
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29.
What does thermonic emission cause to happen at the filament?
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30.
High capacity tubes rotate at up to ________ rpm.

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