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Recorded Detail Test

Enter the letter for the matching Answer
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1.
The primary film/screen unit of resolution is ______.
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2.
The resolving power of an intensifying screen depends on what three factors?
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3.
The major factors that limit photostimulable phosphor systems are the _____ and _____.
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4.
Most human visual acuity is limited to the range of ____ lp/mm.
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5.
_______ is background information that the IR receives.
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6.
Penumbra is increased by _____ of the beam.
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7.
The ______ is the distinctly sharp area of a shadow or the region of complete shadow.
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8.
The major factor that limits DIRECT digital systems is the ______
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9.
The art of radiography involves controlling the degree of _______ so that it does not interfere with image diagnosis.
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10.
The z-axis is the gray scale which is represented as the:
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11.
The higher the _________, the closer together the sine waves and the closer together the line pairs.
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12.
Digital imaging recorded detail is most commonly described in terms of _________.
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13.
High fill factor will produce ______.
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14.
Involuntary motion can best reduced by decreasing ________.
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15.
Resolution problems can be fixed by:
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16.
Quantum mottle is corrected only by increasing ______.
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17.
Recorded detail is also referred to as:
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18.
Visualization of _________ is in indication of acceptable resolution
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19.
What are methods which can be used to reduce the possibility of motion?
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20.
In conventional radiography, PFS was referred to as _________.
A.
exposure time
B.
unsharpness
C.
depth (depth of information)
D.
attenuation
E.
1. eliminate motion 2. reduce OID 3. reduce focal spot size 4. reduce intensifying screen phosphor size and concentration and 5. increase SID
F.
size of the detector element
G.
Imaging noise
H.
mAs
I.
high resolution
J.
line pairs per millimeter or cycles per mm.
K.
penumbra or blur
L.
trabecular patterns
M.
intensifying screen and scanning system
N.
phosphor size, phosphor layer thickness and phosphor concentration
O.
umbra
P.
spatial frequency
Q.
spatial frequency
R.
definition, sharpness, spatial resolution or detail.
S.
5
T.
communication, immobilization devices and reduced exposure time
Type the Answer that corresponds to the displayed Question.
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21.
Another name for quantum noise is ________.
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22.
Resolution affects the image appearance by demonstrating _______ structures.
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23.
Spatial resolution describes the ability of an imaging system to accurately display objects in _____.
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24.
A slow fim/screen combination will demonstrate better ______ than a fast combination.
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25.
__________ is the sampling of the spatial resolution frequency signal twice from each cycle in digital systems.
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26.
______ refers to a lack of sufficient incoming data (photons) for processing.
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27.
High spatial resolution represents a high frequency signal that is capable of imaging
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28.
As focal spot decreases in size, ____ also decreases, thus _______ resolution.
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29.
_______ for digital images can be expressed in terms of three dimensions of the image.
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30.
______ may cause an unsharpness of an image.

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