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Artifacts in Spiral X-ray CT Scanners: Problems and Solutions

Artifact is one of the most important factors in degrading the CT image quality and plays an important role in diagnostic accuracy. In this paper, some artifacts typically appear in Spiral CT are introduced. The different factors such as patient, equipment and interpolation algorithm which cause the artifacts are discussed and new developments and image processing algorithms to prevent or reduce them are presented. Keywords—CT artifacts, Spiral CT, Artifact removal.