Compensation de déformations en tomographie dynamique 3D coniqueReport as inadecuate




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* Corresponding author 1 GMCAO TIMC-IMAG - Techniques de l-Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications Grenoble 2 GMCAO TIMC-IMAG - Techniques de l-Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications Grenoble, CEA-LETI - Laboratoire d-Electronique et des Technologies de l-Information 3 CEA-LETI - Laboratoire d-Electronique et des Technologies de l-Information

Abstract : In dynamic tomography, the measured object or organs are no-longer supposed to be static in the scanner during the acquisition but are supposed to move or to be deformed. Our approach is the analytic deformation compensation during the reconstruction. Our work concentrates on 3D cone beam tomography. We introduce a new large class of deformations preserving the 3D cone beam geometry. We show that deformations from this class can be analytically compensated. We present numerical experiments on phantoms showing the compensation of these deformations in 3D cone beam tomography.

Keywords : Tomography dynamic cone beam





Author: Laurent Desbat - Sébastien Roux - Pierre Grangeat -

Source: https://hal.archives-ouvertes.fr/



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