Title :
Metal artifact reduction in x-ray computed tomography: Inpainting versus missing value
Author :
Heil, Ulrich ; Gross, Daniel ; Schulze, Ralf ; Schwanecke, Ulrich ; Schömer, Elmar
Author_Institution :
Dept. of Design, Comput. Sci. & Media, Univ. of Appl. Sci., Bielefeld, Germany
Abstract :
A comparison of algorithms for reduction of metal artifacts in x-ray cone beam computed tomography (CBCT) is presented. In the context of algebraic reconstruction techniques (ART) several inpainting algorithms in the image domain are evaluated against missing data strategies. A GPU-based iterative framework is employed for a meaningful comparison of both. Simulation results from an extended Shepp-Logan phantom and real world dental data are given.
Keywords :
computerised tomography; dentistry; graphics processing units; image reconstruction; iterative methods; medical image processing; phantoms; GPU-based iterative framework; X-ray cone beam computed tomography; algebraic reconstruction techniques; extended Shepp-Logan phantom; image domain; inpainting algorithms; metal artifact reduction; missing data strategies; missing value; real world dental data; Graphics processing unit; Image reconstruction; Image resolution; Image restoration; X-ray imaging;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE
Conference_Location :
Valencia
Print_ISBN :
978-1-4673-0118-3
DOI :
10.1109/NSSMIC.2011.6152788
