Title :
A methodology for the estimation of the optimal iteration in MLEM-based image reconstruction in PET
Author :
Pafilis, Christos ; Gaitanis, Anastasios ; Gatis, Christos ; Kontaxakis, George ; Spyrou, George ; Panayiotakis, George ; Tzanakos, George
Author_Institution :
Dept. of Phys., Univ. of Athens, Athens, Greece
Abstract :
We have proposed a method for the estimation of the optimal iteration for the Maximum Likelihood Expectation Maximization (MLEM) algorithm used in Positron Emission Tomography (PET) image reconstruction. For the calculation of the transition matrix and the generation of the projection data a PET scanner was simulated using Monte-Carlo techniques. Our preliminary results show that the proposed methodology can estimate the optimal iteration for the MLEM algorithm.
Keywords :
Monte Carlo methods; image reconstruction; medical image processing; positron emission tomography; MLEM-based image reconstruction; Monte-Carlo techniques; PET image reconstruction; PET scanner; maximum likelihood expectation maximization algorithm; optimal iteration; positron emission tomography; transition matrix; Detectors; Image quality; Image reconstruction; Phantoms; Physics; Positron emission tomography;
Conference_Titel :
Biomedical Engineering, 2011 10th International Workshop on
Conference_Location :
Kos
Print_ISBN :
978-1-4577-0553-3
DOI :
10.1109/IWBE.2011.6079046
