2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14Th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors, Date: 16 October 2004 through 22 October 2004, Location: Rome, Patrocinadores: IEEE Nuclear and Plasma Sciences Society;University of Pisa, Department of Physics;Istituto Nazionale di Fisica Nucleare, INFN;CERN;Associazione per lo Sviluppo Scientifico e Tecnologico del