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Proceedings Paper

Region of interest reconstruction in x-ray fluorescence computed tomography
Author(s): Patrick J. La Rivière; Phillip Vargas; Dan Xia; Xiaochuan Pan
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Paper Abstract

X-ray fluorescence computed tomography (XFCT) is a synchrotron-based imaging modality employed for mapping the distribution of elements within slices or volumes of intact specimens. A pencil beam of external radiation is used to stimulate emission of characteristic X-rays from within a sample, which is scanned and rotated through the pencil beam in a first-generation tomographic geometry. It has long been believed that for each slice, the acquired measurement lines must span the entire object at every projection view over 180 degrees to avoid reconstructing images with so-called truncation artifacts. However, recent developments in tomographic reconstruction theory have overturned those long-held beliefs about minimum-data requirements and shown that it is possible to obtain exact reconstruction of ROIs from truncated projections. In this work, we show how to exploit these developments to allow for region of interest imaging in XFCT.

Paper Details

Date Published: 17 September 2008
PDF: 8 pages
Proc. SPIE 7078, Developments in X-Ray Tomography VI, 70780S (17 September 2008); doi: 10.1117/12.793787
Show Author Affiliations
Patrick J. La Rivière, The Univ. of Chicago (United States)
Phillip Vargas, The Univ. of Chicago (United States)
Dan Xia, The Univ. of Chicago (United States)
Xiaochuan Pan, The Univ. of Chicago (United States)

Published in SPIE Proceedings Vol. 7078:
Developments in X-Ray Tomography VI
Stuart R. Stock, Editor(s)

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