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Type: Artigo de periódico
Title: Activity and attenuation recovery from activity data only in emission computed tomography
Author: De Pierro, AR
Crepaldi, F
Abstract: We describe the continuous and discrete mathematical models for Emission Computed Tomography (ECT) and the need for attenuation correction. Then we analyse the problem of retrieving the attenuation directly from the emission data, nonuniqueness and its consequences. We present the existing and new approaches for solving the problem. Methods are compared and illustrated by numerical simulations. The presentation focuses on Positron Emission Tomography, but we also discuss the extensions to Single Photon Emission Computed Tomography.
Subject: Attenuated Radon Transform
maximum likelihood
emission tomography
Country: Brasil
Editor: Soc Brasileira Matematica Aplicada & Computacional
Rights: aberto
Date Issue: 2006
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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