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CT Scan questions with correct answers rated 100%.
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CT Scan questions with correct answers rated 100%.
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CT Scan questions with correct answersrated 100%.
the assigned number that is related to the linear attenuation coefficient of the tissue within each voxel ANS - ct number
opening in the center of the gantry ANS - aperture
ct number of water ANS - zero
t or f A pt with a pacemaker can have a CT scan ANS - true
circular device that houses the xray tube ANS - gantry
single square or picture element within a matrix ANS - pixel
amount of blurring detail and sharpness ANS - spatial resolution
caused most common by quantum noise ANS - noise
t or f An arterial puncture is made for CT ANS - False
range of CT numbers used to map signals into shades of gray ANS - window width
Dental fillings or a pacemaker can cause ANS - artifact
the process of creating a cross sectional tomographic plane of the body ANS - computed tomography measures the radiation that exits the patient ANS - detectors
an array of numbers in a grid of rows and colums ANS - matrix
midpoint of the gray range ,controls image brightness ANS - window level
volume of tissue, product of pixel area and slice thickness ANS - voxel
amount of data displayed on a monitor ANS - field of view
technique that allows the contrast of image to be altered ANS - windowing
this sends information, or primary data to computer ANS - detector assembly
computer uses to compile and calculate data ANS - algorithm
computer assembles data into matrix to form ANS - axial image
in the body the point of reference is ANS - anatomical position
xray tube --> detector assembly--> primary data--> ANS - algorithm-->matrix-->axial image on CRT
the most frequently used section in imaging modalities ANS - axial/transverse/horizontal plane
specific sagittal plane that passes through the midline is ANS - midsagittal ( all others are parasagittal)
who developed CT ANS - godfrey Hounsfield and allan Cormack in 1970
1st brain tissue scanner was in ANS - 1971
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