Page |1
Digital imaging Exposure Techniques
Chapter 21 Questions with Detailed
Verified Answers (100% Correct Answers)
/Already Graded A+
When developing exposure factors for a digital imaging system, which of the following
factors no longer needs to be considered?
a) body habitus of the patient
b) ALARA
c) optimal kVp settings
d) all of these must still be considered
Ans: d) all of these must still be considered
If a technologist fails to properly center over the appropriate automatic exposure
control(AEC) cell, what undesirable results are likely to occur?
a) underexposed and mottle
b) overexposed and saturation
c) underexposed and histogram errors
d) scatter fog and increased exposure index values
Ans: a) underexposed and mottle
If a technologist fails to properly align to exposure field with a digital image receptor, what
undesirable results are likely to occur?
a) underexposed and mottle
b) overexposed and saturation
c) histogram errors & suboptimal EI values
d) scatter fog and "ghosting"
Ans: c) histogram errors & suboptimal EI values
The software function responsible for evaluating the collimated borders of an exposed
imaging plate is called:
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a) algorithmic application
b) exposure field recognition
c) image equalization
d) postprocessing
Ans: b) exposure field recognition
One of the problems identified with the technologist interface with digital imaging systems
and technique selection is that:
a) visual cues indicating over-or-underexposure are no loner present on the image
b) the image can be easily sent to remote locations
c) kvP manipulation is severely limited compared to film/screen systems
d) automatic exposure control systems cannot be used in tandem with digital systems
Ans: a) visual cues indicating over-or-underexposure are no loner present on the image
T/F The 15% rule can be used to adjust technique for changed patient thickness.
Ans: true
T/F Digital imaging systems are inherently mAs driven.
Ans: false
T/F The field size must be large enough so that at least 30% of the image receptor is
exposed.
Ans: true
T/F It is recommended that all exposures be made using a minimum of 70 kVp.
Ans: false
T/F To avoid image mottle, expose all digital images without grid whenever possible.
Ans: false
The practice of using higher exposure factors than needed to obtain a diagnostic radiograph
is commonly referred to as:
a) ALARA
b) rounding up
c) dose creep
Digital imaging Exposure Techniques
Chapter 21 Questions with Detailed
Verified Answers (100% Correct Answers)
/Already Graded A+
When developing exposure factors for a digital imaging system, which of the following
factors no longer needs to be considered?
a) body habitus of the patient
b) ALARA
c) optimal kVp settings
d) all of these must still be considered
Ans: d) all of these must still be considered
If a technologist fails to properly center over the appropriate automatic exposure
control(AEC) cell, what undesirable results are likely to occur?
a) underexposed and mottle
b) overexposed and saturation
c) underexposed and histogram errors
d) scatter fog and increased exposure index values
Ans: a) underexposed and mottle
If a technologist fails to properly align to exposure field with a digital image receptor, what
undesirable results are likely to occur?
a) underexposed and mottle
b) overexposed and saturation
c) histogram errors & suboptimal EI values
d) scatter fog and "ghosting"
Ans: c) histogram errors & suboptimal EI values
The software function responsible for evaluating the collimated borders of an exposed
imaging plate is called:
, Page |2
a) algorithmic application
b) exposure field recognition
c) image equalization
d) postprocessing
Ans: b) exposure field recognition
One of the problems identified with the technologist interface with digital imaging systems
and technique selection is that:
a) visual cues indicating over-or-underexposure are no loner present on the image
b) the image can be easily sent to remote locations
c) kvP manipulation is severely limited compared to film/screen systems
d) automatic exposure control systems cannot be used in tandem with digital systems
Ans: a) visual cues indicating over-or-underexposure are no loner present on the image
T/F The 15% rule can be used to adjust technique for changed patient thickness.
Ans: true
T/F Digital imaging systems are inherently mAs driven.
Ans: false
T/F The field size must be large enough so that at least 30% of the image receptor is
exposed.
Ans: true
T/F It is recommended that all exposures be made using a minimum of 70 kVp.
Ans: false
T/F To avoid image mottle, expose all digital images without grid whenever possible.
Ans: false
The practice of using higher exposure factors than needed to obtain a diagnostic radiograph
is commonly referred to as:
a) ALARA
b) rounding up
c) dose creep
