Computed Tomography Technologist Practice Exam

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Question: 1 / 615

Which characteristic is true for fourth generation CT scanners?

They have a rotating detector array

The x-ray tube is stationary

They use a stationary detector array

Fourth generation CT scanners are characterized by the use of a stationary detector array. In this design, the x-ray tube rotates around the patient while the detectors remain fixed in position, allowing for continuous data collection and improved imaging quality. This configuration enhances the efficiency of data acquisition and is particularly beneficial for high-speed imaging, as the scanning can take place without the need for the detectors to move.

The stationary nature of the detector array in fourth generation CT scanners is what differentiates them from earlier generations, where detectors were either rotating along with the x-ray tube or moved in coordination with the tube. This technological advancement not only helps in minimizing the time required for scans but also contributes to a reduction in motion artifacts during imaging since the detectors can capture data continuously as the tube rotates.

Computed Tomography Technologist Practice Exam

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