ASRT Module 4
A lead apron in the exposure field may cause an exposure indicator miscalculation
because the image data could be misrecognized as:
a. gross underexposure
b. gross overexposure
c. not having collimated edges
d. patient motion - answera. gross underexposure
Improper alignment of a radiographic grid during digital imaging can lead to improper:
a. magnification
b. rescaling
c. spatial resolution
d. contrast - answerd. contrast
Artifacts caused by a dirty light guide appear: - answer white and linear
What is the most common cause of image blur in digital imaging?
a. the patient
b. equipment
c. exposure settings
d. processing parameters - answera. the patient
Most artifacts that appear when using cassette-based digital imaging are caused by:
a. dust and dirt
b. entrance rollers
c. rough handling
d. patient factors - answera. dust and dirt
Radiographic blur can be caused by:
1. patient motion
2. incorrect grid ratio
3. geometric factors - answer1 and 3
When the exposure absorbed by the image receptor surpasses the level at which the
image receptor can respond, what is said to occur?
a. saturation
b. capacity
c. fullness
d. permeation - answera. saturation
Shape distortion can be caused by:
a. subject-to-image receptor distance
A lead apron in the exposure field may cause an exposure indicator miscalculation
because the image data could be misrecognized as:
a. gross underexposure
b. gross overexposure
c. not having collimated edges
d. patient motion - answera. gross underexposure
Improper alignment of a radiographic grid during digital imaging can lead to improper:
a. magnification
b. rescaling
c. spatial resolution
d. contrast - answerd. contrast
Artifacts caused by a dirty light guide appear: - answer white and linear
What is the most common cause of image blur in digital imaging?
a. the patient
b. equipment
c. exposure settings
d. processing parameters - answera. the patient
Most artifacts that appear when using cassette-based digital imaging are caused by:
a. dust and dirt
b. entrance rollers
c. rough handling
d. patient factors - answera. dust and dirt
Radiographic blur can be caused by:
1. patient motion
2. incorrect grid ratio
3. geometric factors - answer1 and 3
When the exposure absorbed by the image receptor surpasses the level at which the
image receptor can respond, what is said to occur?
a. saturation
b. capacity
c. fullness
d. permeation - answera. saturation
Shape distortion can be caused by:
a. subject-to-image receptor distance
