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Detail And Distortion Review Game
Test Description: Review of the material for the Detail and Distortion Test.
Instructions: Answer all questions to get your test result.
1) Which of the following has no effect on recorded detail?
A
SID
B
Anode heel effect
C
Focal spot
D
OID
2) What can be done to reduce magnification when an OID is present?
A
Increase the angle of the CR
B
Increase the SID
C
Reduce the SID
D
Reduce the SOD
3) For the least amount of distortion, how should the part and IR be aligned?
A
None of the answers is correct
B
45 degree angle
C
Perpendicular
D
Parallel
4) Which of the following will produce the least amount of size distortion?
A
40 inch SID, 3 inch OID
B
72 inch SID, 5 inch OID
C
72 inch SID, 3 inch OID
D
40 inch SID, 5 inch OID
5) If the SID is 40 inches, and the OID is 2 inches. What is the magnification factor?
A
1.05
B
0.95
C
Unable to determine with information given
D
20
6) Misrepresentation of a true size of an object is the definition of:
A
Distortion
B
Recorded detail
C
Magnification
D
Elongation
7) If the OID is increased, recorded detail:
A
Increases
B
No relationship between OID and detail
C
Decreases
D
Stays the same
8) The major controlling factor for detail is:
A
Tube angulation
B
SID
C
OID
D
Focal spot
9) The photographic factors that affect the visibility of the image are:
A
Detail and density/IR exposure
B
Detail and contrast
C
Contrast and density/IR exposure
D
Detail and distortion
10) If an object is 15 inches, what is the image size with a magnification factor of 1.5?
A
22.5 inches
B
15 inches
C
13.5 inches
D
30 inches
11) What axis represents the depth of the information in the digital image?
A
X axis
B
Y axis
C
None of the answers is correct
D
Z axis
12) What is the unsharp borders of a structure on the radiographic image termed:
A
Geometric sharpness
B
Umbra
C
Leakage radiation
D
Penumbra
13) Which of the following would describe when an image would show foreshortening?
A
Part angled and CR and IR perpendicular
B
CR angled to IR
C
IR angled to CR
D
None of the answers is correct
14) When referring to shape distortion, what does foreshortening mean?
A
An image is shorter than it is in reality
B
An image is lengthened or extended
C
An image can take any kind of new shape
D
An image is at least twice its normal size
15) Which of the following is a way to measure spatial resolution (detail)?
A
Modulation transfer function
B
All of the answers are ways to measure spatial resolution
C
Point spread function
D
Line spread function
*select an answer for all questions
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