Cirrone, Giuseppe Antonio Pablo and Bucciolini, Marta and Bruzzi, Mara and Candiano, Giuliana and Civinini, Carlo and Cuttone, Giacomo and Guarino, P. and Lo Presti, Domenico and Mazzaglia, Santi Enrico and Pallotta, Stefania and Randazzo, Nunzio and Sipala, Valeria and Stancampiano, Concetta and Talamonti, Cinzia (2011) Monte Carlo evaluation of the Filtered Back Projection method for image reconstruction in proton computed tomography. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 658 (1), p. 78-83. ISSN 0168-9002. eISSN 1872-9576. Article.
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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.
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