Calculate the pitch for a MDCT scan with the following parameters: 128 slice MDCT, 1.25 mm slice thickness, table movement of 80 mm per rotation.
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Which of the following describes the function of a reconstru…
Which of the following describes the function of a reconstruction algorithm in CT?
Select the proper sequence of CT numbers (HUs) for the follo…
Select the proper sequence of CT numbers (HUs) for the following tissues, from lowest HU to the highest HU:
Calculate the distance covered in a SDCT helical scan using…
Calculate the distance covered in a SDCT helical scan using a 1 second tube rotation, 5mm slice thickness, pitch of 1, 30 second total acquisition time and a DFOV of 20 cm.
The mathematical techniques used by the computer to reconstr…
The mathematical techniques used by the computer to reconstruct the computed tomography image are known as:
The data acquisition system, or DAS, measures the number of…
The data acquisition system, or DAS, measures the number of photons that strikes the detector, converts the information to a _______signal, and sends the signal to the computer.
The couch top (table top) of a computed tomography scanner t…
The couch top (table top) of a computed tomography scanner table should have the following:I. low radiation absorption characteristicsII. made of carbon fiberIII. excellent vibration-damping features
Attenuation of a beam of radiation depends on:
Attenuation of a beam of radiation depends on:
An increase of matrix size (with no change in field of view)…
An increase of matrix size (with no change in field of view) will ____________ detail.
Who developed the first clinically useful computed tomograph…
Who developed the first clinically useful computed tomography scanner?