COMPUTED TOMOGRAPHY EXAMINATION
QUESTIONS AND 100% VERIFIED ANSWERS
Translation - Each sweep of the source-detector around the body during CT is called a
__________.
mass density and effective atomic number - Each CT projection records variations in
_________________________.
stored on the computer - Each CT projection is ______________________.
a matrix of values - The cross-sectional anatomy is translated into ___________ during
CT reconstruction.
one - The first generation of computed tomography used ______ detector(s).
long scanning time - The principal drawback of the first-generation CT scanner was the
_______________.
beam scatter - The second-generation CT scanners had the disadvantage of increased
____________.
scanning time - The reduction in ____________ was the principal advantage of the
second-generation CT scanners.
scanning time & scattered radiation - The third generation of CT scanners allowed for
further reduction in ______________.
third - The __________ generation of CT scanners was the first to have the fan beam
transect the entire patient at all times.
Ring artifacts - What is the principal disadvantage of third-generation CT scanners?
stationary detector assembly - The new development in the fourth-generation CT
scanner is the ________________.
heat units - Many CT x-ray tubes have the capacity for millions of _________ with each
exam.
spatial resolution - The concentration of scintillation detectors affects the ___________
of the CT image.
prepatient - The patient dose in CT is determined by the ________________ collimator.
QUESTIONS AND 100% VERIFIED ANSWERS
Translation - Each sweep of the source-detector around the body during CT is called a
__________.
mass density and effective atomic number - Each CT projection records variations in
_________________________.
stored on the computer - Each CT projection is ______________________.
a matrix of values - The cross-sectional anatomy is translated into ___________ during
CT reconstruction.
one - The first generation of computed tomography used ______ detector(s).
long scanning time - The principal drawback of the first-generation CT scanner was the
_______________.
beam scatter - The second-generation CT scanners had the disadvantage of increased
____________.
scanning time - The reduction in ____________ was the principal advantage of the
second-generation CT scanners.
scanning time & scattered radiation - The third generation of CT scanners allowed for
further reduction in ______________.
third - The __________ generation of CT scanners was the first to have the fan beam
transect the entire patient at all times.
Ring artifacts - What is the principal disadvantage of third-generation CT scanners?
stationary detector assembly - The new development in the fourth-generation CT
scanner is the ________________.
heat units - Many CT x-ray tubes have the capacity for millions of _________ with each
exam.
spatial resolution - The concentration of scintillation detectors affects the ___________
of the CT image.
prepatient - The patient dose in CT is determined by the ________________ collimator.
