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|Material Type:||Document, Thesis/dissertation, Internet resource|
|Document Type:||Internet Resource, Computer File|
|All Authors / Contributors:||
Solène Valton; Françoise Peyrin; Dominique Sappey-Marinier; Institut national des sciences appliquées (Lyon).; CREATIS - Centre de Recherche et d'Application en Traitement de l'Image et du Signal.
|Notes:||Titre provenant de l'écran-titre.|
|Details:||Configuration requise : neÌcessite Acrobat Reader.|
|Other Titles:||3D cone beam tomographic reconstruction from circular trajectory for small animal bimodal scanner prototypes|
|Responsibility:||par Solène Valton ; sous la direction de Françoise Peyrin et Dominique Sappey-Marinier.|
The tomographic reconstruction from X-ray transmission data is approached in this work. We address 3D reconstruction from cone beam projections acquired along a circular source trajectory. The study is undertaken within the framework of two projects of prototypes of PET/CT micro-scanners for the small animal, whose objective is to allow the simultaneous acquisition of the data of transmission and emission. Technological constraints relatied to the simultaneous acquisition of the data imply signifant missing data. Two original formulae are developped to allow for off-centered geometry on the one hand, and fourth generation 2D geometry on the other hand. Various cone beam artefacts compensation methods are also studied on simulations. Real data reconstructions obtained from acquisitions on single microCT scanner are finally displayed.