NDLI: Conebeam X-ray computed tomography with an offset detector array

Content Provider	IEEE Xplore Digital Library
Author	Gregor, J. Gleason, S.S. Paulus, M.J.
Copyright Year	2003
Description	Author affiliation: Dept. of Comput. Sci., Tennessee Univ., Knoxville, TN, USA (Gregor, J.)
Abstract	Conventional X-ray computed tomography (CT) imaging is based on the assumption that the entire cross-section of an object is illuminated with X-rays at each view angle. When imaging a large object, a large detector array is thus needed. As an alternative, we propose to offset a normal sized detector array such that slightly more than one half of the required projection data is acquired. During reconstruction, the missing data is accounted for by means of an interpolation and weighting scheme. This algorithmic approach for extending the field of view, which we here present in the context of the popular Feldkamp algorithm, is simple but effective. Supportive experimental results are provided based on simulated phantom data as well as real data obtained from a MicroCAT/sup TM/ which is a circular orbit microCT system for small animal imaging.
Sponsorship	IEEE Signal Process. Soc
File Size	330890
File Format	PDF
ISBN	0780377508
ISSN	15224880
DOI	10.1109/ICIP.2003.1246802
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-09-14
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Computed tomography X-ray imaging X-ray detection X-ray detectors Sensor arrays Optical imaging Object detection Image reconstruction Interpolation Imaging phantoms
Content Type	Text
Resource Type	Article

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