CT Scan Technology: 3rd Generation

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They are more expensive
They use a smaller detector array
They can acquire projection data for a single image in as little as 1 s (correct)
They are slower than second-generation systems

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A fan beam of x-rays is rotated 360 degrees around the isocenter in third-generation CT scanners.
No translation motion is used in this generation of CT scanners.
The fan beam must be wide enough to completely contain the patient.
A curved detector array consisting of several hundred independent detectors (500-1000) is mechanically coupled to the x-ray source.
The x-ray source and detector array rotate together to acquire projection data for a single image.
The rotation-only motion of third-generation scanners enables the acquisition of projection data in as little as 1 second.
Third-generation systems are typically faster than second-generation systems.
The detectors in this generation have incorporated a larger amount of sensors in the detector array.