THIRD GENERATION CT SCANNER
If one detector fails, a ring artifact will appears.
It is a1 second scan times
It is glad to say that it is superior reconstruction and resolution than 1st and 2nd generation CT scanner.
FORTH GENERATION CT SCANNER
The tube rotates around stationary ring of detectors.
It uses fan beam of the x-ray.
Variable slice thickness with pre and post patient collimation.
Avoids ring artefact problems of 3rd generation scanners.
It uses as many as 8000 detectors.
It uses as many as 8000 detectors.
•1 second scan time.
•Auto-detector calibration so no ring artifact.
•High radiation dose compared to earlier scanners.
will be proceeded to the next post......
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