Intersection Line Length Normalization in CT Projection Data

Jan Müller; Thorsten M. Buzug

doi:10.1007/978-3-540-78640-5_16

Intersection Line Length Normalization in CT Projection Data

Institute of Medical Engineering

Abstract

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 language	English
Title of host publication	Bildverarbeitung für die Medizin 2008
Number of pages	5
Publisher	Springer Berlin Heidelberg
Publication date	01.12.2008
Pages	77-81
ISBN (Print)	978-3-540-78639-9
ISBN (Electronic)	978-3-540-78640-5
DOIs	https://doi.org/10.1007/978-3-540-78640-5_16
Publication status	Published - 01.12.2008
Event	Workshop on Bildverarbeitung fur die Medizin 2008 - Berlin, Germany Duration: 06.04.2008 → 08.04.2008

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10.1007/978-3-540-78640-5_16

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abstract = "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.",

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AU - Buzug, Thorsten M.

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AB - 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.

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T2 - Workshop on Bildverarbeitung fur die Medizin 2008

Y2 - 6 April 2008 through 8 April 2008

ER -

Intersection Line Length Normalization in CT Projection Data

Abstract

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