| Katsevich-type reconstruction for dual helical cone-beam CT. | |
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MedLine Citation:
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PMID: 21045273 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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This paper is about inspecting large and long object using dual helical cone-beam computed tomography (CT) and Katsevich-type reconstruction algorithm. Conventional cone-beam helical industrial CT imaging is based on the assumption that the entire cross-section of an object is illuminated with x-rays at each view angle. The field of view is limited by the width of planar detector. As an alternative, this paper developed a dual-helical scanning. When scanning at each helix, part of cross-section is covered by x-ray at each view angle. During reconstruction, Katsevich-type algorithm is applied, which does not rebin projection data. The algorithm is approximate, as it applies Hilbert transform on truncated projection. The reconstruction result is better than extended FDK algorithm, especially for large helical pitch. |
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Authors:
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Li Zeng; Xiaobing Zou |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of X-ray science and technology Volume: 18 ISSN: 1095-9114 ISO Abbreviation: J Xray Sci Technol Publication Date: 2010 |
Date Detail:
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Created Date: 2010-11-03 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9000080 Medline TA: J Xray Sci Technol Country: Netherlands |
Other Details:
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Languages: eng Pagination: 353-67 Citation Subset: IM |
Affiliation:
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ICT Research Center, Key Laboratory of Optoelectronic Technology and System of the Education Ministry of China, Chongqing University, Chongqing, China. drlizeng@hotmail.com |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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