Metodos interativos de decomposição sequencial com mudança de escala em tomografia

AUTOR(ES)
DATA DE PUBLICAÇÃO

2001

RESUMO

We present an extension of RAMLA for Regularized Maximum Likelihood (MAP) in Emission Tomography (ECT) reconstruction. We show that, ifthe sequence generated by this method converges, then it must converge to the true MAP solution. New iterative algorithms are presented for Maximum Likelihood (ML) and MAP reconstruction in Transmission Tomography (CT). The algorithms are natural extensions to CT of RAMLA. We show that the new algorithms for ML and MAP solutions produce similar, or even better results than the EM algorithm and other ordered subsets methods, but in much fewer iterations, and their convergence properties are better than other algorithms

ASSUNTO(S)

otimização matematica tomografia computadorizada metodos iterativos (matematica)

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