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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Iterative Reconstruction in X-ray Fluorescence Tomography Based on Radon Inversion

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Author(s):
Miqueles, Eduardo X. [1] ; De Pierro, Alvaro R. [1]
Total Authors: 2
Affiliation:
[1] Univ Campinas UNICAMP, Dept Appl Math, BR-13083859 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: IEEE TRANSACTIONS ON MEDICAL IMAGING; v. 30, n. 2, p. 438-450, FEB 2011.
Web of Science Citations: 17
Abstract

We describe a new approach for the inversion of the generalized attenuated radon transform in X-ray fluorescence computed tomography (XFCT). The approach consists of using the radon inverse as an approximation for the actual one, followed by an iterative refinement. Also, we analyze the problem of retrieving the attenuation map directly from the emission data, giving rise to a novel alternating method for the solution. We applied our approach to real and simulated XFCT data and compared its performance to previous inversion algorithms for the problem, showing its main advantages: better images than those obtained by other analytic methods and much faster than iterative methods in the discrete setting. (AU)

FAPESP's process: 09/15844-4 - On the inversion of the generalized Radon Transform: new results in fluorescence tomography
Grantee:Eduardo Xavier Miqueles
Support Opportunities: Scholarships in Brazil - Post-Doctoral