Deck 32: Exposure Systems and Charts

Question 1

When viewing phantom images, professionals are not asked to select the

A)single best image.
B)images outside acceptance limits.
C)images within acceptance limits.
D)all of the above

Answer 1

single best image.

Question 2

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

Answer 2

True

Question 3

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

Answer 3

True

Question 4

Many computerized exposure control systems utilize anatomically based programming.

Question 5

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

Question 6

Fixed kVp systems

A)produce more scatter radiation than other systems.
B)shorten exposure latitude.
C)increase x-ray tube wear.
D)are very popular because of the low contrast images.

Question 7

The device used to measure part thickness is called a

A)collimator.
B)caliper.
C)protractor.
D)goniometer.

Question 8

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

Question 9

Fixed kVp systems produce more scatter radiation than other systems.

Question 10

Fixed kVp systems tend to decrease patient dose.

Question 11

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

Question 12

Fixed kVp systems

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

Question 13

When AEC systems are used, the selection of ____ is eliminated.

A)mA
B)exposure time
C)kVp
D)detectors

Question 14

The goal of any radiographic exposure system is to provide a method of consistency in the quality of image production.

Question 15

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.

Question 16

When establishing a technique chart, the initial step involves

A)producing phantom images.
B)performing clinical trials.
C)performing clinical fine-tuning.
D)all of the above

Question 17

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

Question 18

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

Question 19

When establishing technique charts, clinical trials precede phantom testing.

Question 20

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

Question 21

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.

Question 22

Match the following choices with the correct statement as each relates to exposure systems.
made of tissue-equivalent material

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

Question 23

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

Question 24

With a fixed kVp technique system,

A)radiographic contrast varies based upon the optimum kVp.
B)the average beam energy varies.
C)mAs is varied.
D)all of the above

Question 25

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

Question 26

Match the following choices with the correct statement as each relates to exposure systems.
became popular in the 1940s

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

Question 27

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

Question 28

A common term used for AEC is

A)APR.
B)DQE.
C)phototiming.
D)edge detection radiography (EDR).

Question 29

Match the following choices with the correct statement as each relates to exposure systems.
preprogrammed exposure techniques

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

Question 30

Match the following choices with the correct statement as each relates to exposure systems.
father of radiologic technology

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

Question 31

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

Question 32

Match the following choices with the correct statement as each relates to exposure systems.
used to measure part thickness

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

Question 33

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.

Question 34

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

Question 35

When developing a fixed kVp exposure system it is important to remember that

A)tube heat loading increases
B)the optimal kVp selected is the maximum kVp established
C)exposure times may be longer.
D)a single kVp value is acceptable for all body parts and thicknesses.

Question 36

Match the following choices with the correct statement as each relates to exposure systems.
also known as phototiming

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

Question 37

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

Question 38

Match the following choices with the correct statement as each relates to exposure systems.
developed a scientific approach to exposure techniques

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

Question 39

Match the following choices with the correct statement as each relates to exposure systems.
inconsistent radiographic image contrast

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