<!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"> As you mention it, it's described in the users' guide that you have to use system key words to describe your geometry. To simulated PET systems, you have 3 different systems available: cylindricalPET, CPET, ecat. PETscanner is not one of the available systems! After you choose the type of system you want to use, you have to respect the name of the sub-components. See Fig. 4.1 and 4.2 for the name of the different systems and components. Hope this helps, -- Corinne <a class="moz-txt-link-abbreviated" href="mailto:wuh@mir.wustl.edu">wuh@mir.wustl.edu</a> wrote: <blockquote cite="midOF8C2C4A6A.9A5F4637-ON86256EF5.0076B620-86256EF5.007729ED@msnotes.wustl.edu" type="cite"> Dear All, I worked on a "geometry not fixed (shape)" PET scanner, using "scanner" system in GATE. But I face a problem of Ascii data output for coincidences, who knew how to set a mac files for "scanner" system. When I define a system as name "scanner", I can attach my module to the system by "/gate/systems/scanner/level1/attach <module name>".  But codes can not identify the coincidence related command, as ***** COMMAND NOT FOUND </gate/digitizer/Coincidences/setWindow 20. ns> ***** ***** Command ignored ***** ***** COMMAND NOT FOUND </gate/output/root/setRootCoincidencesFlag 0> ***** ***** Command ignored ***** ***** COMMAND NOT FOUND </gate/output/ascii/setOutFileCoincidencesFlag 1> ***** ***** Command ignored ***** Coincidences could be got only for PETscanner according to table 4.1 of Gate_ UserGuide, if I change the name of system as "PETscanner", my module can not attach into system, code gives:   ***** COMMAND NOT FOUND </gate/systems/PETscanner/level1/attach mudule> ***** ***** Command ignored ***** and above errors. Best regards Heyu Wu <pre wrap=""> <hr size="4" width="90%"> _______________________________________________ gate-users mailing list <a class="moz-txt-link-abbreviated" href="mailto:gate-users@lphe1pet1.epfl.ch">gate-users@lphe1pet1.epfl.ch</a> <a class="moz-txt-link-freetext" href="http://lphe1pet1.epfl.ch/mailman/listinfo/gate-users">http://lphe1pet1.epfl.ch/mailman/listinfo/gate-users</a> </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;"> <hr style="width: 100%; height: 2px;">Corinne J. Groiselle, PhD </div> <div style="text-align: left; font-family: times new roman,times,serif; color: rgb(102, 102, 102);">Research instructor Division of Nuclear Medicine / Department of Radiology University of Massachusetts Medical School 55 Lake Avenue North Worcester, MA 01655 USA phone: (508)-856-6123 - fax: (508)-856-4572 e-mail: <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> 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>