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Distortion Test

Enter the letter for the matching Answer
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1.
Tube angulation will produce which type of distortion?
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2.
When an object is placed halfway between the tube and the film, the image will be how many times larger?
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3.
If the tube angle increases, how is distortion affected?
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4.
What factor can affect shape distortion?
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5.
Magnification distortion can be used to an advantage for which of the following radiographic procedures?
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6.
To avoid shape distortion, what must be paid close attention to?
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7.
If the SID is increased the same as the OID, what will the resultant radiograph show?
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8.
What is the most important factor in controlling distortion?
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9.
What size focal spot is used when doing macroradiography?
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10.
What are the 2 types of distortion that can reduce the quality of a radiograph?
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11.
What percentage increase is usually used for magnification radiography?
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12.
What is the magnification factor if an object measures 4 cm, but the radiographic image is 8 cm?
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13.
What will occur when the OID is decreased?
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14.
What advantage is there to magnifying an object?
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15.
A misrepresentation of the shape of an object may be caused by?
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16.
What can be done to help compensate for an angled part?
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17.
What would not be used to minimize radiographic distortion?
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18.
If the grid ratio increases, how is distortion affected?
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19.
Which of the following will produce the largest image?
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20.
Which of the following will produce the smallest image?
A.
Size and shape
B.
72" SID, 2" OID
C.
.3mm
D.
An angled object, an angled x-ray tube, or an angled cassette
E.
2 times
F.
OID
G.
An increase in size distortion
H.
2x
I.
Distortion increases
J.
40" SID, 3" OID
K.
The image is closer to actual size
L.
Align tube, part and film
M.
Shortest possible exposure time
N.
X-ray tube angulation
O.
Small objects become visible
P.
Cerebral angiography
Q.
Elongation
R.
Part angulation
S.
It has no effect
T.
100%
Type the Answer that corresponds to the displayed Question.
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21.
What occurs when the SID is increased?
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22.
If the air-gap technique is used, how is distortion affected?
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23.
How does magnification affect radiographic quality?
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24.
Size distortion is affected by?
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25.
The ratio of SID to SOD represents which of the following?
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26.
If the SID increases, how is distortion affected?
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27.
If the SOD increases, how is distortion affected?
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28.
What keeps distortion to a minimum?
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29.
Misrepresentation of the true size and shape of an object is the definition of?
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30.
Changing the shape of an object is called?

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