CAMRT CT Image Quality, Artifacts, Pitch,
QC Exam Questions and Answers with
Verified Solutions | Latest Updated 2026
MDCT: Slice thickness is beam
determined ±Can contain 4 to 64 parallel rows (up to
by _________ width and detector 320)
configuration ±MDCT allows for longer and faster z axis
coverage
per gantry rotation
Helical Interpolation: ±The steeper
___________ helical interpolation is to take the slant and
the angle of the slice, the more blur out
interpolation required of the helical image
More interpolation increases the true
loss
of image resolution
T or F
___________: Defined as the pitch
travel formula in image is for MDCT
distance of the CT scan table per
360° rotation of the x-ray tube,
divided by the x-ray beam
collimation width
, °When table feed is less than less than 1 and scan overlap occurs
beam
collimation, pitch is.....
increasing OR decreasing the INCREASING
pitch Pitch greater than 1=Interspaced --- gaps
will result in a scan covering more between
anatomy lengthwise for a given ...table is moving quicker than the width of
total collimation - lowers dose --- spring
acquisition time stretched out
.... Slices are more slanted
decreasing pitch from 1 to 0.5 will increase
decrease anatomy covered and
will
increase or decrease the dose
how does mA and shorter scan •Higher mA settings allow shorter scan
times times to be
increase image quality? used
•A short scan time is critical in avoiding
image
degradation as a result of patient motion
QC Exam Questions and Answers with
Verified Solutions | Latest Updated 2026
MDCT: Slice thickness is beam
determined ±Can contain 4 to 64 parallel rows (up to
by _________ width and detector 320)
configuration ±MDCT allows for longer and faster z axis
coverage
per gantry rotation
Helical Interpolation: ±The steeper
___________ helical interpolation is to take the slant and
the angle of the slice, the more blur out
interpolation required of the helical image
More interpolation increases the true
loss
of image resolution
T or F
___________: Defined as the pitch
travel formula in image is for MDCT
distance of the CT scan table per
360° rotation of the x-ray tube,
divided by the x-ray beam
collimation width
, °When table feed is less than less than 1 and scan overlap occurs
beam
collimation, pitch is.....
increasing OR decreasing the INCREASING
pitch Pitch greater than 1=Interspaced --- gaps
will result in a scan covering more between
anatomy lengthwise for a given ...table is moving quicker than the width of
total collimation - lowers dose --- spring
acquisition time stretched out
.... Slices are more slanted
decreasing pitch from 1 to 0.5 will increase
decrease anatomy covered and
will
increase or decrease the dose
how does mA and shorter scan •Higher mA settings allow shorter scan
times times to be
increase image quality? used
•A short scan time is critical in avoiding
image
degradation as a result of patient motion
