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Computed Tomography revirwed questions withverified answers.
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Computed Tomography revirwed questions withverified answers.
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Computed Tomography revirwedquestions withverified answers.
what term is applied to a single square, or picture element, in the image display matrix ANS - pixel
what determines the amount of data displayed on the monitor ANS - FOV
a volume element is called a ANS - voxel
a relative comparison of x-ray attenuation of a voxel of tissue to an equal volume of water is a(n) ANS -
CT numbers
what is the CT number of water ANS - 0
a circular device that houses the x-ray tube, DAS, and detector array is called the ANS - gantry
x-ray tubes used in advanced CT scanners can tolerate ____ to __ MHU ANS - 4, 5
which of the following can be selected at the operator's console
1. slice thickness
2. table index
3. imaging technique factors ANS - all
the range of CT numbers that are used to map signals into shades of gray is called the ANS - window
width
the midpoint of the range of gray levels to be displayed on the monitor is the ANS - window level
a narrow window width would display ___________ contrast ANS - high
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