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Artifact analysis of approximate helical cone-beam CT reconstruction algorithms
2001
Medical Physics (Lancaster)
In this paper, four approximate cone-beam CT reconstruction algorithms are compared: Advanced single slice rebinning ͑ASSR͒ as a representative of algorithms employing a two dimensional approximation, PI, PI-SLANT, and 3-PI which all use a proper three dimensional back-projection. A detailed analysis of the image artifacts produced by these techniques shows that aliasing in the z-direction is the predominant source of artifacts for a 16-row scanner with 1.25 mm nominal slice thickness. For a
doi:10.1118/1.1413518
pmid:11831573
fatcat:7nbopw4z4rbuxpadrlcd2kg5d4