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Proceedings Paper

Processing of CT sinograms acquired using a VRX detector
Author(s): Lawrence M. Jordan; Frank A. DiBianca; Ping Zou; Joseph S. Laughter; Herbert D. Zeman
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Paper Abstract

A 'variable resolution x-ray detector' (VRX) capable of resolving beyond 100 cycles/main a single dimension has been proposed by DiBianca, et al. The use of detectors of this design for computed-tomography (CT) imaging requires novel preprocessing of data to correct for the detector's non- uniform imaging characteristics over its range of view. This paper describes algorithms developed specifically to adjust VRX data for varying magnification, source-to-detector range and beam obliquity and to sharpen reconstructions by deconvolving the ray impulse function. The preprocessing also incorporates nonlinear interpolation of VRX raw data into canonical CT sinogram formats.

Paper Details

Date Published: 25 April 2000
PDF: 10 pages
Proc. SPIE 3977, Medical Imaging 2000: Physics of Medical Imaging, (25 April 2000); doi: 10.1117/12.384534
Show Author Affiliations
Lawrence M. Jordan, Univ. of Tennessee/Memphis (United States)
Frank A. DiBianca, Univ. of Tennessee/Memphis (United States)
Ping Zou, Univ. of Tennessee/Memphis (United States)
Joseph S. Laughter, Univ. of Tennessee/Memphis (United States)
Herbert D. Zeman, Univ. of Tennessee/Memphis (United States)

Published in SPIE Proceedings Vol. 3977:
Medical Imaging 2000: Physics of Medical Imaging
James T. Dobbins III; John M. Boone, Editor(s)

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