Intersection Line Length Normalization in CT Projection Data

Jan Müller, Thorsten M. Buzug


We present a method to improve the quality of common sinogram restoration algorithms, which are used for metal-artifact reduction in X-ray CT. The presented approach is based on the idea that the intersection length of all beams through the object of interest can approximately be calculated from a preliminary reconstruction of the object. Incorporating this information to the reconstruction allows significant reduction of streak artifacts. Additionally, it is shown that the information about intersection length may also be used to improve the detection of metal shadows within the sinogram.

Original languageEnglish
Title of host publicationBildverarbeitung für die Medizin 2008
Number of pages5
PublisherSpringer Berlin Heidelberg
Publication date01.12.2008
ISBN (Print)978-3-540-78639-9
ISBN (Electronic)978-3-540-78640-5
Publication statusPublished - 01.12.2008
EventWorkshop on Bildverarbeitung fur die Medizin 2008 - Berlin, Germany
Duration: 06.04.200808.04.2008


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