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Fixed kVp systems


A) increase the consistency of image density.
B) increase the consistency of image contrast.
C) lengthen exposure latitude.
D) all of the above

E) C) and D)
F) A) and B)

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When using a variable kVp exposure technique system,


A) a mAs value is identified for each body part and thickness.
B) small changes in patient thickness can be accommodated with small changes in mAs.
C) kVp varies as a function of patient thickness.
D) all of the above

E) C) and D)
F) All of the above

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Match the following choices with the correct statement as each relates to exposure systems. -92 kVp increased to 106 kVp


A) calipers
B) Arthur Fuchs
C) APR
D) variable kVp system
E) fixed kVp system
F) AEC
G) Ed C. Jerman
H) phantom
I) fixed kVp systems
J) 120 kVp
K) 15% rule
L) 2 kVp rule

M) D) and E)
N) A) and G)

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K

Fixed kVp systems produce more scatter radiation than other systems.

A) True
B) False

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Once phantom images have been produced, they must be shown to


A) all diagnosing radiologists only.
B) image quality control radiographers only.
C) diagnosing radiologists and image quality control radiographers.
D) radiology equipment representatives.

E) B) and C)
F) B) and D)

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C

Variable kVp systems


A) produce higher contrast images than other systems do.
B) enhance the visibility of detail.
C) increase the perception of resolution.
D) all of the above

E) A) and B)
F) C) and D)

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When not using AEC as an exposure technique selection,


A) measuring the patient is very important.
B) AEC detector combinations are critical.
C) the size of the patient is not a factor.
D) none of the above

E) A) and B)
F) A) and C)

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Most x-ray generators permit finer adjustment of kVp stations than of time or mA settings.

A) True
B) False

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When formulating an exposure technique chart system, a successful sequence of steps is as follows: 1) clinical trials 2) clinical fine-tuning 3) ongoing fine-tuning 4) creation of phantom images 5) using the phantom images to extrapolate a chart 6) selecting the optimal phantom image 7) phantom testing


A) 1, 4, 5, 2, 3, 6, 7
B) 4, 6, 1, 7, 2, 3, 5
C) 4, 6, 5, 7, 1, 2, 3
D) 7, 4, 5, 6, 1, 2, 3

E) B) and C)
F) A) and B)

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Fixed kVp systems


A) decrease patient dose.
B) reduce x-ray tube wear.
C) decrease time settings.
D) all of the above

E) All of the above
F) B) and C)

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Match the following choices with the correct statement as each relates to exposure systems. -mAs is varied to achieve an appropriate image receptor exposure.


A) calipers
B) Arthur Fuchs
C) APR
D) variable kVp system
E) fixed kVp system
F) AEC
G) Ed C. Jerman
H) phantom
I) fixed kVp systems
J) 120 kVp
K) 15% rule
L) 2 kVp rule

M) D) and I)
N) C) and E)

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When a new piece of imaging equipment is added to the imaging chain, technique charts must be re-established.

A) True
B) False

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Technique systems function best when a large number of variables are permitted to vary.

A) True
B) False

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Once a technique chart has been established, the process is terminated.

A) True
B) False

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Technique systems function best when a


A) large number of variables can be held constant.
B) single factor is permitted to vary.
C) method of consistency is used to produce a quality image.
D) all of the above

E) A) and D)
F) B) and C)

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All of the following are advantages of the fixed kVp technique system EXCEPT:


A) Patient dose is higher.
B) mAs values are at a minimum based upon thickness.
C) Radiographic contrast is predictable and uniform.
D) A greater exposure latitude is permitted.

E) A) and C)
F) None of the above

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Pre-programmed exposure techniques provided by the equipment manufacturer


A) should be viewed as exact for all situations.
B) should be viewed as a starting point for technique selection.
C) are based upon a national standard and widely accepted by everyone.
D) take into account the age of the system and modify techniques accordingly.

E) A) and B)
F) C) and D)

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B

Technique systems function best when a single variable is permitted to vary.

A) True
B) False

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Anatomically programmed radiography (APR) exposure settings


A) are suggested factors.
B) may be modified by the radiographer.
C) may be reprogrammed by the user.
D) all of the above

E) None of the above
F) C) and D)

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Fixed kVp systems tend to decrease patient dose.

A) True
B) False

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