<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=iso-8859-1"> <META content="MSHTML 6.00.2800.1505" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT size=2><FONT face=Arial size=2>The GATE documentation states the following under the "<STRONG>Voxelised Source</STRONG>" section (under fig 7.1)</FONT></FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT size=2><FONT face=Arial>" <FONT size=-1><FONT size=-1><FONT size=-1><EM>GATE also offers the possibility to read in voxelised attenuation geometries following these two strategies. The gray scale is then converted to material definitions in that case using an analogous translator</EM>.</FONT></FONT></FONT></FONT><FONT face=Arial size=3> </FONT></FONT><FONT face=Arial size=2>"</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Is there any documentation available on how to do this? Is there a file like "activityRange.dat" that contains the attenuation coefficients required?</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Thanks,</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Dale</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial><FONT size=1>Dale L Bailey PhD CSci ARCP(Lond) FIPEM MACPSEM<BR>Principal Physicist, Department of Nuclear Medicine, Royal North Shore Hospital<BR>Senior Lecturer in Physics, School of Medical Radiation Sciences<BR>and<BR>Clinical Associate Professor, Faculty of Medicine<BR>University of Sydney<BR>phone: +61 (0)402 892 051<BR>FAX:   +61 (0)2 9906 1124<BR>email: </FONT><A href="mailto:D.Bailey@fhs.usyd.edu.au"><FONT size=1>D.Bailey@fhs.usyd.edu.au</FONT></A><BR></FONT></DIV></BODY></HTML>