Title :
Suppression of Ring Artefacts in CT Fan-Beam Scanners
Author_Institution :
Philips GmbH Forschungslaboratorium Hamburg, Postbox 54 08 40 2000 Hamburg 54, FRG
Abstract :
A software algorithm is presented which is able to suppress ring-like artefacts which occur in CT fan-beam scanners when the measurements are slightly erroneous in their offset or gain.
Keywords :
Buffer storage; Convolution; Filtering; Frequency measurement; Kernel; Sampling methods; Sensor arrays; Shape; X-ray detection; X-ray detectors;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1978.4329487
