NDLI: 3D and 4D imaging from multi-threaded cone-beam CT scans

Content Provider	IEEE Xplore Digital Library
Author	Knaup, M. Kachelrieb, M. Kalender, W.A.
Copyright Year	2005
Description	Author affiliation: Iinst. of Med. Phys., Erlangen-Nurnberg Univ., Erlangen, Germany (Knaup, M.; Kachelrieb, M.; Kalender, W.A.)
Abstract	Multi-threaded CT scanners with up to 3 X-ray tubes and corresponding detectors may have manifold applications. Previously we studied the application to phase-correlated imaging (e.g. cardiac CT) and performed simulations to investigate the optimal alignment of the tubes in order to achieve the best possible temporal resolution. In this paper, we describe the generalization of our Feldkamp-type "extended parallel backprojection" algorithm to cope with G threads. With this new version of the EPBP reconstruction algorithm, we performed 3D and 4D simulation studies on mathematical phantoms. The simulations clearly show a reduction of cone-beam artifacts for multi-slice spiral scans and approve the expected improvement in temporal resolution for phase-correlated imaging compared to a conventional single-threaded scanner.
Starting Page	5
Ending Page	1885
File Size	1430476
Page Count	1881
File Format	PDF
ISBN	0780392213
ISSN	10957863
DOI	10.1109/NSSMIC.2005.1596699
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-23
Publisher Place	Puerto Rico
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computed tomography Optical imaging Image resolution X-ray imaging X-ray detection X-ray detectors Yarn Reconstruction algorithms Imaging phantoms Spirals
Content Type	Text
Resource Type	Article

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