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

作     者：Dimitrios Nikolopoulos Sofia Kottou Nikolaos Chatzisavvas Xenophon Argyriou Emannouel Vlamakis Panayiotis Yannakopoulos Anna Louizi 

作者机构：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 

出 版 物：《Open Journal of Radiology》 (放射学期刊（英文）)

年 卷 期：2013年第3卷第2期

页      面：56-65页

学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

主　　题：Monte-Carlo GATE PET Siemens Biograph DUO PET/CT 

摘      要：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.