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