RADIOGRAPHIC
RADIOGRAPHIC IMAGING AND EXPOSURE EXAM QUESTIONS AND
ANSWERS % CORRECT.
More effect answer >> A zebra pattern artifact that can occur during computed
radiography imaging if the grid frequency is similar to the laser scanning
frequency or if a grid cassette is placed in a Bucky.
Using a SID outside of focal range creates. answer >> A loss of exposure at the
periphery of the IR
Grid cutoff is also called answer >> Lateral decentering
How does grid cutoff occur? answer >> Angling the grid or angling the X-ray tube
Off focus grid cutoff occurs when. answer >> The SID is outside the
recommended focal range.
How to you calculate grid ratio? answer >> Height divided by width of interspace
How do you calculate grid conversion factor? answer >> GCF = mas with grid /
mas without grid
Increased grid ratio affects what 3 factors? answer >> Increased contrast, patient
dose increases, the likelihood of grid cutoff increases.
, RADIOGRAPHIC
The projected shape of the unrestricted primary beam is? answer >> circular
One purpose of beam-restricting devices is to _____ by changing the size and
shape of the primary beam. answer >> decrease scatter radiation produced
The most effective type of beam-restricting device is the...? answer >> collimator
Of the beam-restricting devices, which are the most similar? answer >> Cone and
cylinder
The purpose of automatic collimating is the ensure that... answer >> The field
size does not exceed the IR
When making a significant increase in collimation.. answer >> mAs should be
increased
Which one of the following increases as collimation increases?
A. Patient exposure
B. scatter production
C. Fog
D. Contrast answer >> D. Contrast
Which of the following statements is true for positive beam-limiting devices?
A. They are required on all radiographic installations.
B. They are required on all new radiographic installations.
RADIOGRAPHIC IMAGING AND EXPOSURE EXAM QUESTIONS AND
ANSWERS % CORRECT.
More effect answer >> A zebra pattern artifact that can occur during computed
radiography imaging if the grid frequency is similar to the laser scanning
frequency or if a grid cassette is placed in a Bucky.
Using a SID outside of focal range creates. answer >> A loss of exposure at the
periphery of the IR
Grid cutoff is also called answer >> Lateral decentering
How does grid cutoff occur? answer >> Angling the grid or angling the X-ray tube
Off focus grid cutoff occurs when. answer >> The SID is outside the
recommended focal range.
How to you calculate grid ratio? answer >> Height divided by width of interspace
How do you calculate grid conversion factor? answer >> GCF = mas with grid /
mas without grid
Increased grid ratio affects what 3 factors? answer >> Increased contrast, patient
dose increases, the likelihood of grid cutoff increases.
, RADIOGRAPHIC
The projected shape of the unrestricted primary beam is? answer >> circular
One purpose of beam-restricting devices is to _____ by changing the size and
shape of the primary beam. answer >> decrease scatter radiation produced
The most effective type of beam-restricting device is the...? answer >> collimator
Of the beam-restricting devices, which are the most similar? answer >> Cone and
cylinder
The purpose of automatic collimating is the ensure that... answer >> The field
size does not exceed the IR
When making a significant increase in collimation.. answer >> mAs should be
increased
Which one of the following increases as collimation increases?
A. Patient exposure
B. scatter production
C. Fog
D. Contrast answer >> D. Contrast
Which of the following statements is true for positive beam-limiting devices?
A. They are required on all radiographic installations.
B. They are required on all new radiographic installations.
