Exact analytic reconstruction in x-ray fluorescence CT and approximated versions

Autor(es)

Miqueles, Eduardo X. ^[1] ; De Pierro, Alvaro R. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Dept Appl Math, Campinas - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Physics in Medicine and Biology; v. 55, n. 4, p. 1007-1024, FEB 21 2010.
• Citações Web of Science: 16

Resumo

X-ray fluorescence computed tomography (XFCT) is a relatively new synchrotron-based imaging modality aiming at reconstructing the distribution of nonradiative elements within a sample irradiated with high-intensity monochromatic x-rays. In a recent paper La Riviere (2004 Phys. Med. Biol. 49 2391-405) presented an approximated inversion method based on reducing the problem to the inversion of the exponential radon transform. In this paper we compare La Riviere's results with recently derived `exact' analytic formulae for the generalized attenuated radon transform. We present numerical experiments with real and simulated data. (AU)

• Processo FAPESP: 06/00356-6 - Métodos iterativos em tomografia de transmissão
• Beneficiário: Eduardo Xavier Miqueles
• Modalidade de apoio: Bolsas no Brasil - Doutorado