Author/Authors :
Cirrone، نويسنده , , G.A.P. and Bucciolini، نويسنده , , M. and Bruzzi، نويسنده , , M. and Candiano، نويسنده , , G. and Civinini، نويسنده , , C. and Cuttone، نويسنده , , G. and Guarino، نويسنده , , P. and Lo Presti، نويسنده , , D. and Mazzaglia، نويسنده , , S.E. and Pallotta، نويسنده , , S. and Randazzo، نويسنده , , N. and Sipala، نويسنده , , V. and Stancampiano، نويسنده , , C. and Talamonti، نويسنده , , C.، نويسنده ,
Abstract :
In this paper the use of the Filtered Back Projection (FBP) Algorithm, in order to reconstruct tomographic images using the high energy (200–250 MeV) proton beams, is investigated. The algorithm has been studied in detail with a Monte Carlo approach and image quality has been analysed and compared with the total absorbed dose. A proton Computed Tomography (pCT) apparatus, developed by our group, has been fully simulated to exploit the power of the Geant4 Monte Carlo toolkit. From the simulation of the apparatus, a set of tomographic images of a test phantom has been reconstructed using the FBP at different absorbed dose values. The images have been evaluated in terms of homogeneity, noise, contrast, spatial and density resolution.
Keywords :
Monte Carlo simulation , GEANT4 , Reconstruction algorithm , Proton tomography
