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Reducing computed tomography reconstruction and beam hardening artifacts by data fusion

 
: Guhathakurta, Jajnabalkya

Bundesanstalt für Materialforschung und -prüfung -BAM-, Berlin; Deutsche Gesellschaft für Zerstörungsfreie Prüfung e.V. -DGZfP-, Berlin; Ghent University, Ghent:
International Symposium on Digital Industrial Radiology and Computed Tomography, DIR 2015 : 22-25 June 2015, Ghent, Belgium, Conference & Proceedings
Belgium, 2015
S.330-337
International Symposium on Digital Industrial Radiology and Computed Tomography (DIR) <2015, Ghent>
Bundesministerium für Bildung und Forschung BMBF
VIP; 03V0740; BEP-CT
Die berührungslose und breitbandige Bestimmung elektrischer Parameter für Multi-Gigabit-Systeme auf Basis der Computertomographie
Englisch
Konferenzbeitrag
Fraunhofer IPA ()
Computertomographie; Röntgenbildverarbeitung; data fusion; Laserstrahlhärten; Bildverarbeitung; Radiographie

Abstract
Reconstruction and beam hardening artifacts can limit the quality of computed tomography (CT) data sets and cause problems for later steps which process these data sets. This paper presents an approach to combine additional X-ray images during CT reconstruction in order to reduce artifacts and to improve the accuracy of data extracted from the CT in subsequent processing steps. In order to achieve this, a modified version of filtered back projection is used. However, this technique can also be applied to other reconstruction algorithms like the maximum likelihood expectation maximization (MLEM). This approach has been investigated with both synthetic voxel data and physical X-ray computed tomography data.

: http://publica.fraunhofer.de/dokumente/N-356216.html