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Proceedings Paper

Spiral CT: current status and future directions
Author(s): Ge Wang; Ping Chin Cheng; Michael W. Vannier M.D.
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Paper Abstract

In x-ray computed tomography (CT) spiral/helical scanning is achieved by continuous and simultaneous source rotation, object translation and data acquisition. In medical imaging, fan-beam spiral CT has replaced conventional incremental CT. Also, cone-beam spiral CT is feasible and advantageous is important applications. In this paper, resolution characteristics, protocol optimization, and image restoration are discussed in fan-beam spiral CT. Then, generalized Feldkamp cone-beam reconstruction is described is spiral geometry. Based on Snyder's iterative deblurring theory, a unified iterative algorithm is reported to handle incomplete cone-beam data. Finally, several future possibilities in spiral CT are mentioned.

Paper Details

Date Published: 24 October 1997
PDF: 10 pages
Proc. SPIE 3149, Developments in X-Ray Tomography, (24 October 1997); doi: 10.1117/12.279358
Show Author Affiliations
Ge Wang, Univ. of Iowa (United States)
Ping Chin Cheng, SUNY/Buffalo (United States)
Michael W. Vannier M.D., Univ. of Iowa (United States)

Published in SPIE Proceedings Vol. 3149:
Developments in X-Ray Tomography
Ulrich Bonse, Editor(s)

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