<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> <title></title> </head> <body bgcolor="#ffffff" text="#000000"> Hi, I am running GATE on an AMD Opteron (64-bits) 1.4 GHz cluster with 2 Go of RAM per dual-processor. To have a clinically realistic simulation of an F-18 acquisition (@ NEC peak - 2 min scan), it takes 15h to 24h depending on the size of the object on 120 CPUs. For example, I have ~24 million total coincidences in a 70-cm long, 20-cm diameter cylinder filled with water and 5.8 mCi of F-18 for a 2-min acquisition (the simulation takes 15h x 120 CPUs). Hope this helps, Corinne <a class="moz-txt-link-abbreviated" href="mailto:pasantos@bwh.harvard.edu">pasantos@bwh.harvard.edu</a> wrote: <blockquote cite="mid1564.170.223.142.238.1102105392.squirrel@170.223.142.238" type="cite"> <pre wrap="">Dear all, I am trying to decide if I should use GATE to simulate PET acquisitions with I-124 but, before I can actually install GATE and try it myself, I would need to have an idea of the duration of a simulation either with F-18 or I-124. Could you experienced users please tell me what kind of workstations you are using and how much time it takes to run a simulation of a determined number of events considering simple object geometries? I would really appreciate all the information you could provide me with. Thank you in advance, Paula </pre> </blockquote> <div class="moz-signature">-- <link rel="important stylesheet" href="chrome://messenger/skin/messageBody.css"> <title>message</title> <div class="moz-text-html" lang="x-western"> <div style="text-align: center;"> <div style="text-align: left;"> Corinne J. Groiselle, PhD </div> <div style="text-align: left; font-family: times new roman,times,serif; color: rgb(102, 102, 102);">Research Instructor Department of Radiology / Division of Nuclear Medicine University of Massachusetts Medical School 55 Lake Avenue North Worcester, MA 01655 USA Phone: (508)-856-6123 - fax: (508)-856-4572 Email: <a class="moz-txt-link-abbreviated" href="mailto:Corinne.Groiselle@umassmed.edu">Corinne.Groiselle@umassmed.edu</a> Professional homepage: <a class="moz-txt-link-freetext" href="http://users.umassmed.edu/corinne.groiselle">http://users.umassmed.edu/corinne.groiselle</a> Official UMASS faculty page: <a class="moz-txt-link-freetext" href="http://www.umassmed.edu/faculty/show.cfm?faculty=731">http://www.umassmed.edu/faculty/show.cfm?faculty=731</a> Personal homepage: <a class="moz-txt-link-freetext" href="http://corinne.groiselle.free.fr">http://corinne.groiselle.free.fr</a> </div> </div> </div> </div> </body> </html>