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CT Scan questions with 100% correct answers
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CT Scan questions with 100% correct answers
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CT Scanthe assigned number that is related to the linear attenuation coefficient of the tissue within each voxel -
correct answer ✔✔ct number
opening in the center of the gantry - correct answer ✔✔aperture
ct number of water - correct answer ✔✔zero
t or f A pt with a pacemaker can have a CT scan - correct answer ✔✔true
circular device that houses the xray tube - correct answer ✔✔gantry
single square or picture element within a matrix - correct answer ✔✔pixel
amount of blurring detail and sharpness - correct answer ✔✔spatial resolution
caused most common by quantum noise - correct answer ✔✔noise
t or f An arterial puncture is made for CT - correct answer ✔✔False
range of CT numbers used to map signals into shades of gray - correct answer ✔✔window width
Dental fillings or a pacemaker can cause - correct answer ✔✔artifact
the process of creating a cross sectional tomographic plane of the body - correct answer ✔✔computed
tomography
, measures the radiation that exits the patient - correct answer ✔✔detectors
an array of numbers in a grid of rows and colums - correct answer ✔✔matrix
midpoint of the gray range ,controls image brightness - correct answer ✔✔window level
volume of tissue, product of pixel area and slice thickness - correct answer ✔✔voxel
amount of data displayed on a monitor - correct answer ✔✔field of view
technique that allows the contrast of image to be altered - correct answer ✔✔windowing
this sends information, or primary data to computer - correct answer ✔✔detector assembly
computer uses to compile and calculate data - correct answer ✔✔algorithm
computer assembles data into matrix to form - correct answer ✔✔axial image
in the body the point of reference is - correct answer ✔✔anatomical position
xray tube --> detector assembly--> primary data--> - correct answer ✔✔algorithm-->matrix-->axial image
on CRT
the most frequently used section in imaging modalities - correct answer ✔✔axial/transverse/horizontal
plane
specific sagittal plane that passes through the midline is - correct answer ✔✔midsagittal ( all others are
parasagittal)
who developed CT - correct answer ✔✔godfrey Hounsfield and allan Cormack in 1970
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