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<p class=MsoPlainText><span lang=EN-GB>Hi Ali!<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoPlainText><span lang=EN-GB>You have to be careful with two things:<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoPlainText><span lang=EN-GB>1<sup>st</sup>: GATE can’t read
float data (32 bit)! So you'll need to convert your phantom file to unsigned
integer (16 bit) format (with IDL or MATLAB for instance).<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-GB>The NCAT program produces bin files in
float data… Do you did the conversion?<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-GB>Don’t forget to check you image
conversion before launch your simulation… If all scripts are well defined
and you got a total of 0 voxels, probably is because the conversion <span
style='color:black'>wasn't done correctly</span>.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Comic Sans MS"'><o:p> </o:p></span></p>
<p class=MsoPlainText><span lang=EN-GB>2<sup>nd</sup>: The ActivityRange.dat
file is where you define the activity distribution inside the phantom (for each
voxel or voxels range) = match activity values to the voxels number/range,....,
is the definition of the voxelized source in your simulation!<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-GB>You have the information about the
voxels numbers (assigned an each organ or tissue) in the parameters file on the
NCAT program. The same information is reproduced in the log file at the moment
of the generation of the phantom files by the program.<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-GB>You can also check this values if you
visualize your phantom file, using an image software... If you didn’t
define these values correctly, it could be the reason of your problem.<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoPlainText><span lang=EN-GB>Hope this help you.<o:p></o:p></span></p>
<p class=MsoPlainText><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoPlainText><span lang=EN-GB>Cheers,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Comic Sans MS"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#262626'>Susana Branco Silva<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Comic Sans MS";
color:#E36C0A'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:navy'><img width=239
height=35 id="Picture_x0020_1" src="cid:image001.gif@01C8DB92.E73C3550"
alt=untitled><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#595959'>Faculdade de Ciências da Universidade de Lisboa<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#595959'>Campo Grande, 1749-016 Lisboa, Portugal<br>
Phone: (+351) 21 750 01 77 ext.: 20515<br>
Fax: (+351) 21 750 00 30<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#7F7F7F'><a href="mailto:susana.silva@fc.ul.pt"><span lang=FR
style='color:#595959;text-decoration:none'>email: </span><span lang=FR
style='color:blue'>susana.silva@fc.ul.pt</span></a></span><span lang=FR
style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#7F7F7F'><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#595959'>url: </span><u><span lang=EN-US style='font-size:8.0pt;
font-family:"Calibri","sans-serif";color:#7F7F7F'><a href="www.ibeb.fc.ul.pt"><span
style='color:blue'>www.ibeb.fc.ul.pt</span></a></span></u><span lang=EN-US
style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:#7F7F7F'><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#1D1B11'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Comic Sans MS"'><o:p> </o:p></span></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> gate-users-bounces@lists.healthgrid.org
[mailto:gate-users-bounces@lists.healthgrid.org] <b>On Behalf Of </b>AliAsghar
Parach<br>
<b>Sent:</b> terça-feira, 1 de Julho de 2008 9:23<br>
<b>To:</b> Gate-users@lists.healthgrid.org<br>
<b>Subject:</b> [Gate-users] ncat voxel source problem<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Hi gate users!<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>I installed the gate3.1.2 on my computer successfully and
ran ncat phantom with 128*128 array and 128 slices with no error.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>problem arises when i use the ncat voxelized
source(with 75 bq activity in each voxel of heart and others=0). GATE show ncat
voxel phantom truely but in voxel source, the voxel number yhat gate recognized
is 0 and then the total activity is 0.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>(i use voxelized source instead of voxelized ohantom in my
macro and gate realized it successfully and show me a heart in opengl viewer)<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>what is it's problem to run the ncat voxel source and why
it's voxel number is zero?<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>help me to overcome this problem.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>thank you.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Ali Asghar Parach<o:p></o:p></p>
</div>
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