4D dose calculations and 4D PET image reconstruction using deformable tetrahedral models of moving organs - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2014

4D dose calculations and 4D PET image reconstruction using deformable tetrahedral models of moving organs

Résumé

Purpose: Respiratory-induced organ motion is a technical challenge to nuclear imaging and to particle therapy dose calculations for lung cancer treatment in particular. Internal organ tissue displacements and deformations induced by breathing need to be taken into account when calculating Monte Carlo dose distributions or when performing tomographic reconstructions for PET imaging. Current techniques based on Deformable Image Registration (DIR) cannot fully take into account complex internal deformations of the lungs nor the fact that respiratory motion is not reproducible. This study proposes a method to calculate dose distribution and to reconstruct PET activities over adaptive tetrahedral meshes which deform with time. As an illustration, biomechanical modeling based on Finite Element Analysis (FEA) was used for motion field computation.
Fichier non déposé

Dates et versions

hal-01052873 , version 1 (29-07-2014)

Identifiants

  • HAL Id : hal-01052873 , version 1

Citer

P. Manescu, Joseph Azencot, M. Beuve, H. Ladjal, B. Shariat. 4D dose calculations and 4D PET image reconstruction using deformable tetrahedral models of moving organs. ICTR-PHE 2014, Feb 2014, Genève, Switzerland. pp.S62. ⟨hal-01052873⟩
185 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More