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CTMR 403 Questions Exam Latest Update
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CTMR 403 Questions Exam Latest Update ...
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CTMR 403 Questions ExamLatest Update
what are 2 advantages of CT over xray? - Answer CT minimizes superimposition and is
able to distinguish between slight density changes
who discovered the measurement of CT? - Answer Godfrey Newbold Hounsfield
what does the Hounsfield unit measure? - Answer measurement of xrays passing
through an object from all directions
what generation of CT scanners do we use? - Answer third
definition of generation - Answer refers to the method of scanning
what are the three steps of the CT image formation process? - Answer data acquisition
image reconstruction
image display/manipulation/storage/recording/communication
what is data recognition? - Answer collection of xray transmission measurements from
the patient
what is slice by slice scanning also known as? - Answer axial scanning
slice by slice scanning works by the tube rotating around the patient and collects data
from the first slice, the tube ________ and the patient moves into position for the next
slice - Answer stops
volume scanning reduces what? - Answer acquisition time
in volume scanning, a volume of tissue is scanned in a _________ or _________ path as a
result go the patient, tube, and detectors continuously moving - Answer spiral or helical
What is image reconstruction? - Answer raw data is collected by the detectors and are
sent to the computer for processing
what is the image display step of the formation process? - Answer reconstructed image
is displayed for viewing or stored for later
What is the Fourier Transform? - Answer a mathematical function that converts a signal
in the spatial domain to a signal in the frequency domain
makes it so you can get an image from a signal
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