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Computed Tomography Questions and
Correct Answers/ Latest Update /
Already Graded
The word Tomo is tomography means
Ans: To cut
What is the Z-axis
Ans: the thickness of a cross-sectional slice.
The degree to which an x-ray beam is reduced by an object is
referred to as
Ans: Attenuation
The amount of the x-ray beam that is absorbed per unit thickness of
the absorber
Ans: Linear Attenuation
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difference in linear attenuation coefficient is responsible for
Ans: Image Contrast
These are the two dimensional squares of the matrix
Ans: Pixels
The 3d dimension of the matrix are known as
Ans: Voxels
Number of pixels in a matrix are product of number of
Ans: Rows and columns
Beam attenuation of CT are measured in
Ans: Hounsfield Units
Scan Data is the same as
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Ans: Raw Data
The ability of a system to define small objects distictly
Ans: Spatial Resolution
This image quality's criteria refers to the speed at which the data can
be acquired
Ans: Temporal Resolution
This image quality criteria is the ability to differentiate objects with
similar densities
Ans: Contrast Resolution
Multi slice is defined as _ to _ slices per gantry
Ans: 4 to 320
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the time required to acquire all x-ray projections that are needed to
reconstruct one CT image
Ans: Temporal resolution
2 advantages of volume scanning are
Ans: shorter scan times
scanning more volume of anatomy
A single image reconstructed from a volume of acquired data.
Ans: Slice
he group of slices which make up a particular examination
Ans: Scan
Refers to a single exposure which results in an image much like a
conventional x-ray
Computed Tomography Questions and
Correct Answers/ Latest Update /
Already Graded
The word Tomo is tomography means
Ans: To cut
What is the Z-axis
Ans: the thickness of a cross-sectional slice.
The degree to which an x-ray beam is reduced by an object is
referred to as
Ans: Attenuation
The amount of the x-ray beam that is absorbed per unit thickness of
the absorber
Ans: Linear Attenuation
,2 | Page
difference in linear attenuation coefficient is responsible for
Ans: Image Contrast
These are the two dimensional squares of the matrix
Ans: Pixels
The 3d dimension of the matrix are known as
Ans: Voxels
Number of pixels in a matrix are product of number of
Ans: Rows and columns
Beam attenuation of CT are measured in
Ans: Hounsfield Units
Scan Data is the same as
,3 | Page
Ans: Raw Data
The ability of a system to define small objects distictly
Ans: Spatial Resolution
This image quality's criteria refers to the speed at which the data can
be acquired
Ans: Temporal Resolution
This image quality criteria is the ability to differentiate objects with
similar densities
Ans: Contrast Resolution
Multi slice is defined as _ to _ slices per gantry
Ans: 4 to 320
, 4 | Page
the time required to acquire all x-ray projections that are needed to
reconstruct one CT image
Ans: Temporal resolution
2 advantages of volume scanning are
Ans: shorter scan times
scanning more volume of anatomy
A single image reconstructed from a volume of acquired data.
Ans: Slice
he group of slices which make up a particular examination
Ans: Scan
Refers to a single exposure which results in an image much like a
conventional x-ray
