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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Greetings GATE-users,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am new to GATE (self-taught for about 4 months, but did attend the Geant4 training course last fall in Catania). I am running Gate 7.1 with geant4 10.1.0. I am able to run simulations with manually defined physics processes, but whenever I run a simulation using the physic list builder, it seems to run, and I get events defined in my stat.txt file, with the same number of tracks and steps, which makes me think that interactions are not registering. I also get no hits, singles or coincidences in my .root output files.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I think this is a general issue, but I am using GATE for radiopharmaceutical dosimetry purposes, and so my sources tend to be ion source decays.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>In an unrelated issue, I also have a bad case memory leaks whenever I try to employ dose or spectrum actors. I am typically employing a dose and a spectrum actor to both the tumor and the patient. I am no computer expert. I’ve attached the valgrind leak output, and it seems as though it may have something to do with my geant4 installation.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal>-charlie<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-size:20.0pt;font-family:"Brush Script MT";color:#1F3864'>Charles A. Maitz, DVM, PhD, DACVR-RO</span></b><span style='font-size:20.0pt;font-family:"Brush Script MT";color:#1F3864'><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB",sans-serif;color:black'>Assistant Professor of Radiation Oncology<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB",sans-serif;color:black'>Department of Veterinary Medicine and Surgery and Radiology<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB",sans-serif;color:black'>International Institute of Nano & Molecular Medicine<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB",sans-serif;color:black'>University of Missouri - Columbia<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB",sans-serif;color:black'><a href="mailto:maitzc@missouri.edu">maitzc@missouri.edu</a><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB",sans-serif;color:black'>(573)882-7821</span><span style='font-family:"Berlin Sans FB",sans-serif;color:#1F3864'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>