Probabilistic models and numerical calculation of system matrix and sensitivity in list-mode MLEM 3D reconstruction of Compton camera images - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physics in Medicine and Biology Année : 2016

Probabilistic models and numerical calculation of system matrix and sensitivity in list-mode MLEM 3D reconstruction of Compton camera images

Résumé

This paper addresses the problem of evaluating the system matrix and the sensitivity for iterative reconstruction in Compton camera imaging. Proposed models and numerical calculation strategies are compared through the influence they have on the three-dimensional reconstructed images. The study attempts to address four questions. First, it proposes an analytic model for the system matrix. Second, it suggests a method for its numerical validation with Monte Carlo simulated data. Third, it compares analytical models of the sensitivity factors with Monte Carlo simulated values. Finally, it shows how the system matrix and the sensitivity calculation strategies influence the quality of the reconstructed images.
Fichier non déposé

Dates et versions

hal-01272780 , version 1 (11-02-2016)

Identifiants

Citer

Voichita Maxim, Xavier Lojacono, Estelle Hilaire, Jochen Krimmer, Etienne Testa, et al.. Probabilistic models and numerical calculation of system matrix and sensitivity in list-mode MLEM 3D reconstruction of Compton camera images. Physics in Medicine and Biology, 2016, 61 (1), pp.243-264. ⟨10.1088/0031-9155/61/1/243⟩. ⟨hal-01272780⟩
251 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More