A GATE Simulation Study of the Siemens Biograph DUO PET/CT System

Dimitrios Nikolopoulos, Sofia Kottou, Nikolaos Chatzisavvas, Xenophon Argyriou, Emannouel Vlamakis, Panayiotis Yannakopoulos, Anna Louizi

Department of Engineering of Electronic and Computer Systems, Technological Educational Institute (TEI) of Piraeus, Athens, Greece.
Department of Physics, Chemistry and Material Science, Technological Educational Institute (TEI) of Piraeus, Athens, Greece.
Medical Physics Department, Medical School, University of Athens, Athens, Greece.

DOI: 10.4236/ojrad.2013.32009                

Abstract

This is a GATE-simulation study of the Siemens Biograph DUO PET/CT system. It reports effects of changes in the thickness of the employed Lutetium Oxyorthosilicate(LSO) detectors. The PET/CT, a human body phantom and a cylindrical F-18 FDG source were simulated. Validation measurements were conducted. The results indicate that LSO thickness increase degrades spatial resolution, improves relative energy resolution from 9.0% to 11.3% and increases signal-to-noise-ratio from 0.81 to 1.17. Thicker LSO crystals present greater axial sensitivity so as the detection efficiency of PET would be significantly enhanced.

Keywords

Monte-Carlo; GATE; PET; Siemens Biograph DUO PET/CT

Conflicts of Interest

The authors declare no conflicts of interest.

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