CT REGISTRY REVIEW (MIC) LATEST 2025/26 VERIFIED
QUESTIONS AND CORRECT ANSWERS RATED 100% A+ SCORE
SOLUTION
Important clinical benefits of iterative reconstruction include:
1. Ability to reduce radiation dose without compromising image
quality
2. No longer needing to perform multi-planar reconstructions
3. Reduction in noise seen in the image - ---ANSWERS----1,3
Which statement is FALSE regarding 3D SSD?
A. Helical image data is well suited for 3D SSD because there is
minimal misregistration or gaps
B. The volume data, form which the 3D SSD is generated, is
created by combing transverse, sagittal, and coronal recons.
C. The tissue surface may be selected by using a threshold vaule
equal to the tissue's CT number
D. Patient motion during the scan is detrimental to the quality of
the 3D images - ---ANSWERS----B
What is 3D SSD? - ---ANSWERS----3D (Shaded surface display)
Reconstructed images of the surfaces of anatomical structures
A helical scan performed on a 64 slice MDCT scanner is
reconstructed with: - ---ANSWERS----Cone beam recons
A CT manufacturer has a scanner in which the focal spot of the
x-ray beam can move to two, slightly separated, distinct
locations. What benefit does the dual focal spot provide
compared to an identical scanner possessing a single focal spot?
- ---ANSWERS----The number of projections is doubled
,A __________ scan uses only a single projection - ---ANSWERS--
--Localizer
What does convolutin do to the image quality when it is added to
the back projection reconstruction process?
A. Normalizes the attenuation coefficients to ensure tissues are
displayed with correct CT numbers
B. Increases the number of projection thereby reducing streaking
artifacts.
C. Improves contrast resolution by reducing scatter radiation
D. Enhances important characteristics of attenuation profiles
thus reducing streak and star artifact - ---ANSWERS----D
The ______moves during a helical scan on a third generation
scanner
1. X-ray tube
2. Patient table
3. Detector elements - ---ANSWERS----1,2,3
Which of the following is a reconstruction technique applied to
the raw data after the primary reconstruction has already been
accomplished? - ---ANSWERS----Retrospective recontruction
A smooth, or low pass, reconstruction filter is typically NOT
selected for a(n) _____ exam.
A. Pituitary
B. Kidneys
C. Liver
D. IAC (internal auditory canals) - ---ANSWERS----D
Which is NOT an advantage of a helical study compared to a
conventional serial CT study?
,1. Minimal anatomical misregistration sometimes caused by
inconsistent breath-holding
2. Shorter total exam time
3. Can retrospectively reconstruct a slice at any arbitrary
position
4. Offers the best image quality for a brain exam - ---ANSWERS-
---4
An increase in ___________ does NOT occur in the resulting
images when applying a sharp, or high-pass reconstruction filter
during the image reconstruction of CT raw data.
1. Contrast resolution
2. Edge enhancement
3. Appearance of noise - ---ANSWERS----1
Which of the following utilizes convolution?
1. 3D SSD
2. Fourier tranform
3. Filtered back projection - ---ANSWERS----3
_____________ yields an image that appears 3D but also shows
anatomical details above and below 3D surfaces - ---ANSWERS-
---VR (volume rendering)
Which type of storage media may hold CT image data?
1. Internal hard disk
2. CD
3. Re-writable optical disk - ---ANSWERS----1,2,3
____________ may have to be edited from the data set to get a
diagnostic MIP of a CTA exam - ---ANSWERS----Bones
, In which technique are tissues other than the surface of a
structure excluded by setting a threshold value and eliminating
pixels above or below that threshold? - ---ANSWERS----3D
shaded surface display
Which statement is TRUE:
1. Amplified electrical signal obtained from detectors must be
digitized
2. Digital CT images are numerical representations of cross-
sectional anatomy
3. Digital signals may be formed by sampling analog signals at
discrete time intervals - ---ANSWERS----1,2,3
Muti-planar reconstructions are performed on which of the
following:
A. Image data
B. Raw data
C. Attenuation profiles - ---ANSWERS----A
____________ allows helical data to be converted into planar raw
data - ---ANSWERS----Interpolation
Which of the following may occur during the interscan delay of a
conventional or serial CT scan, performed on a continuous
rotation scanner?
A. Table position is incremented
B. Tube continues to rotate in same direction as during scan
C. Tube assembly makes a 360 degree rotation - ---ANSWERS--
--a,b,c
On a third generation single row detector scanner, if there are
750 detectors and there are 900 projections in a full rotation,
how many samples of attenuation data are collected for the raw
QUESTIONS AND CORRECT ANSWERS RATED 100% A+ SCORE
SOLUTION
Important clinical benefits of iterative reconstruction include:
1. Ability to reduce radiation dose without compromising image
quality
2. No longer needing to perform multi-planar reconstructions
3. Reduction in noise seen in the image - ---ANSWERS----1,3
Which statement is FALSE regarding 3D SSD?
A. Helical image data is well suited for 3D SSD because there is
minimal misregistration or gaps
B. The volume data, form which the 3D SSD is generated, is
created by combing transverse, sagittal, and coronal recons.
C. The tissue surface may be selected by using a threshold vaule
equal to the tissue's CT number
D. Patient motion during the scan is detrimental to the quality of
the 3D images - ---ANSWERS----B
What is 3D SSD? - ---ANSWERS----3D (Shaded surface display)
Reconstructed images of the surfaces of anatomical structures
A helical scan performed on a 64 slice MDCT scanner is
reconstructed with: - ---ANSWERS----Cone beam recons
A CT manufacturer has a scanner in which the focal spot of the
x-ray beam can move to two, slightly separated, distinct
locations. What benefit does the dual focal spot provide
compared to an identical scanner possessing a single focal spot?
- ---ANSWERS----The number of projections is doubled
,A __________ scan uses only a single projection - ---ANSWERS--
--Localizer
What does convolutin do to the image quality when it is added to
the back projection reconstruction process?
A. Normalizes the attenuation coefficients to ensure tissues are
displayed with correct CT numbers
B. Increases the number of projection thereby reducing streaking
artifacts.
C. Improves contrast resolution by reducing scatter radiation
D. Enhances important characteristics of attenuation profiles
thus reducing streak and star artifact - ---ANSWERS----D
The ______moves during a helical scan on a third generation
scanner
1. X-ray tube
2. Patient table
3. Detector elements - ---ANSWERS----1,2,3
Which of the following is a reconstruction technique applied to
the raw data after the primary reconstruction has already been
accomplished? - ---ANSWERS----Retrospective recontruction
A smooth, or low pass, reconstruction filter is typically NOT
selected for a(n) _____ exam.
A. Pituitary
B. Kidneys
C. Liver
D. IAC (internal auditory canals) - ---ANSWERS----D
Which is NOT an advantage of a helical study compared to a
conventional serial CT study?
,1. Minimal anatomical misregistration sometimes caused by
inconsistent breath-holding
2. Shorter total exam time
3. Can retrospectively reconstruct a slice at any arbitrary
position
4. Offers the best image quality for a brain exam - ---ANSWERS-
---4
An increase in ___________ does NOT occur in the resulting
images when applying a sharp, or high-pass reconstruction filter
during the image reconstruction of CT raw data.
1. Contrast resolution
2. Edge enhancement
3. Appearance of noise - ---ANSWERS----1
Which of the following utilizes convolution?
1. 3D SSD
2. Fourier tranform
3. Filtered back projection - ---ANSWERS----3
_____________ yields an image that appears 3D but also shows
anatomical details above and below 3D surfaces - ---ANSWERS-
---VR (volume rendering)
Which type of storage media may hold CT image data?
1. Internal hard disk
2. CD
3. Re-writable optical disk - ---ANSWERS----1,2,3
____________ may have to be edited from the data set to get a
diagnostic MIP of a CTA exam - ---ANSWERS----Bones
, In which technique are tissues other than the surface of a
structure excluded by setting a threshold value and eliminating
pixels above or below that threshold? - ---ANSWERS----3D
shaded surface display
Which statement is TRUE:
1. Amplified electrical signal obtained from detectors must be
digitized
2. Digital CT images are numerical representations of cross-
sectional anatomy
3. Digital signals may be formed by sampling analog signals at
discrete time intervals - ---ANSWERS----1,2,3
Muti-planar reconstructions are performed on which of the
following:
A. Image data
B. Raw data
C. Attenuation profiles - ---ANSWERS----A
____________ allows helical data to be converted into planar raw
data - ---ANSWERS----Interpolation
Which of the following may occur during the interscan delay of a
conventional or serial CT scan, performed on a continuous
rotation scanner?
A. Table position is incremented
B. Tube continues to rotate in same direction as during scan
C. Tube assembly makes a 360 degree rotation - ---ANSWERS--
--a,b,c
On a third generation single row detector scanner, if there are
750 detectors and there are 900 projections in a full rotation,
how many samples of attenuation data are collected for the raw
