<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">The voxelised "phantom" uses range.dat.<DIV><BR class="khtml-block-placeholder"></DIV><DIV>for example: </DIV><DIV>% cat gate_v2.2.0/examples/example_PHAMTOM_SOURCE/Voxelized_Phantom_Source/range.dat<DIV><DIV><DIV> 5</DIV><DIV> 0 0 Air false 0.0 0.0 0.0 0.2</DIV><DIV> 6 6 Lung false 1.0 0.0 0.0 0.2</DIV><DIV> 6 16 Breast false 0.0 1.0 0.0 0.2</DIV><DIV> 16 36 Plastic true 0.0 0.0 1.0 0.2</DIV><DIV> 36 200 Air false 0.0 0.0 0.0 0.2</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>5 classes</DIV><DIV>lld uld material flag a b c d</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>The 'material' voxels are those for which lld < voxels < uld where the "material" is defined in GateMaterials.db</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>The flag indicates whether to display the phantom when visualising the 'a,b,c,d' parameters are related to the colour/line-style/line-width etc. to display the material. I don't have the exact details for that right now.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>You can see the list of materials available (and add your own) in:</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>gate_v2.2.0/GateMaterials.db</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>regards,</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Graeme</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>On 07/02/2006, at 8:17 AM, Dale Bailey wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"> <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><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">_______________________________________________</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">gate-users mailing list</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="mailto:gate-users@lphe1pet1.epfl.ch">gate-users@lphe1pet1.epfl.ch</A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><A href="http://lphe1pet1.epfl.ch/mailman/listinfo/gate-users">http://lphe1pet1.epfl.ch/mailman/listinfo/gate-users</A></DIV> </BLOCKQUOTE></DIV><DIV><DIV><BR class="khtml-block-placeholder"></DIV> </DIV><BR></DIV></DIV></BODY></HTML>