Computed tomography Questions and
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Define computed tomography
Ans: the process of creating a cross sectional tomographic plane of any
part of the body
The xray tube________around the patient or part
Ans: rotates: detector assembly,algorithm, matrix, liquid crystal
display(LCD) or cathode ray tube (CRT)
list the 3 major compoents of a ct scanner
Ans: gantry, computer and operator console, patient table
what is multiplanar reconstruction?
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Ans: a digital postprocessing technique that has the ability to reconstruct
CT axial images into toher planes without additional radiation to the
patient
what are the 3 most commonly requested CT procedures?
Ans: head, chest and abdomen
By what three routes is contrast introduced for CT procedures?
Ans: IV, orally or rectally
why are power injectors needed for CT contrast procedures?
Ans: faster scans require faster contrast delivery
What are the 4 main factors that affect CT image quality?
Ans: spatial resolution, contrast resolution, noise, artifacts
the amount of blurring in a CT image is described as?