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CT image production review updated already passed
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CT image production reviewWhat causes out of field artifact and how does it appear? - correct answer ✔✔Caused by a patient being
centered outside of the SFOV, appears as a streaking artifact.
What causes ring artifacts and how do they appear? - correct answer ✔✔Caused by detector issues,
appear as a ring or series of rings
What causes tube arching and how does it appear on an image? - correct answer ✔✔Caused by a short
circuit event, appears as streaking
What imaging does cupping artifact commonly occur in? - correct answer ✔✔Ct head
What causes cone beam artifact and how does it appear? - correct answer ✔✔Cone beam artifacts arise
in an image when the CT scanner does not acquire enough data during the acquisition, appear on an
image as shaded areas within an image.
Cone beam artifacts only appear when? - correct answer ✔✔only occur with cone beam geometries
What causes edge gradient artifact and how does it appear? - correct answer ✔✔arise when two objects
of vastly different densities that are close together are imaged, appears as streaks within the CT image.
What ways can you reduce streaking from Metal artifact? - correct answer ✔✔Removing the metal from
the image when possible.
Utilizing thin sections.
Utilizing a higher kV.
Utilizing software that can reduce the impacts of the streaking.
What is partial volume averaging and how does it appear on an image? - correct answer ✔✔Happens
when results there are tissues with different density that are captured within the same voxel, appears as
shaded areas in an image
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