<table cellspacing='0' cellpadding='0' border='0' ><tr><td style='font: inherit;'>Hi GATE Users,    Although I have got the same size (2MB) of gate.sin with and without collimator but when I use ImageJ to see gate.sin without modelling collimator, there is no thing! Any coments please on this issue?   Thanks in advance, Margaret --- On Tue, 3/11/08, Margaret Morris <drpetuk@yahoo.com> wrote: <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(16,16,255) 2px solid">From: Margaret Morris <drpetuk@yahoo.com> Subject: [Gate-users] Empty gate.sin file? To: gate-users@lists.healthgrid.org Date: Tuesday, March 11, 2008, 10:40 AM <DIV id=yiv1812829125> <TABLE cellSpacing=0 cellPadding=0 border=0> <TBODY> <TR> <TD> Dear GATE Users,   I have got empty gate.sin file when I did not include the collimator in my SPECT benchmark simulation. If I consider the collimator, the gate.sin file is normal! Can you please explain the reason of getting empty gate.sin file?   Thank in advance, Margaret</TD></TR></TBODY></TABLE> <HR SIZE=1> Looking for last minute shopping deals? <A href="http://us.rd.yahoo.com/evt=51734/*http://tools.search.yahoo.com/newsearch/category.php?category=shopping" target=_blank rel=nofollow>Find them fast with Yahoo! Search.</A> </DIV><PRE>_______________________________________________ Gate-users mailing list Gate-users@lists.healthgrid.org http://lists.healthgrid.org/mailman/listinfo/gate-users</PRE></BLOCKQUOTE></td></tr></table> <hr size=1>Never miss a thing. <a href="http://us.rd.yahoo.com/evt=51438/*http://www.yahoo.com/r/hs"> Make Yahoo your homepage.</a>