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Barium used for colonography or metal items
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EKG gated cardiac studies is called
The ability to visualize small parts,
4D imaging. What is the 4th
1 spaces between small parts, detail or 2
dimension of this imaging, creating a
sharpness
functional study?
How does matrix and pixel size Example of Edge Gradient effect
3 4
increase spatial resolution? artifact
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Terms in this set (38)
, The ability to visualize small parts, Spatial Resolution
spaces between small parts, detail or
sharpness
Spatial Resolution in CT depends on Quality of raw data and reconstruction method
what?
When small structures are lost due to Partial Volume Effect
averaging of large amounts of data
because more than one type of data
is contained in voxel
How do we avoid Partial Volume Acquire thinner slice
Effect?
How does matrix and pixel size We want a large matrix with small pixels (this will
increase spatial resolution? give us more greys)
How is decreasing the DFOV affect Decreased DFOV decreases pixel size; therefore
the size of our pixel? increasing fine detail resolution of the image
Smoothing algorithm has less noise. With less noise, there's also a decrease in spatial
How does this affect spatial resolution
resolution?
The ability to differentiate a structure Low contrast resolution
that varies only slightly in density
from its surrounding.
Relationship between Low Contrast Increased low contrast resolution = decreased
Resolution and Noise Noise