<div dir="ltr">Hello, <div><br></div><div>I have written a macro (attached) for the voxelized phantom and source by following the example on the wiki page. (where act_1.bin in the header file indicates the binary XCAT phantom). I don't even know if I am writing the header and activity tables correctly. </div>
<div><br></div><div>In any case, the phantom doesn't look so right (attached image). The phantom should be a XCAT phantom instead of a box in the center of the scanner (attached image). </div><div><br></div><div>GATE keeps complaining about the following. <br>
</div><div>GateGeometryVoxelInterfileReader::ReadFile:WARNING: voxel not added (material translation not found); value; 0 </div><div><br></div><div>What am I missing? </div><div><br></div><div>Thanks!</div><div>Stephen </div>
<div><br></div><div><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Mar 6, 2014 at 8:26 PM, Stephen Yip <span dir="ltr"><<a href="mailto:stephen.fyip1@gmail.com" target="_blank">stephen.fyip1@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Nevermind. I figured it out (brain farted). Thanks! <div><div class="h5"><div class="gmail_extra"><br><br>
<div class="gmail_quote">On Thu, Mar 6, 2014 at 1:16 PM, Stephen Yip <span dir="ltr"><<a href="mailto:stephen.fyip1@gmail.com" target="_blank">stephen.fyip1@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi, <div><br></div><div><div style="font-size:13px;font-family:Tahoma">1. What is the difference between voxelized source and phantom?</div>
<div style="font-size:13px;font-family:Tahoma">
<br></div><div style="font-size:13px;font-family:Tahoma">I am trying to create a realistic PET image using a phantom image (w/ various activities in different parts of anatomy). <span style="font-size:10pt">So the phantom can in principle emit photon-pair at each voxel location......so if each voxel can emit photon(s), the phantom would behave like a voxelized source, then? </span></div>
<div style="font-size:13px;font-family:Tahoma"><br></div><div style="font-size:13px;font-family:Tahoma">To create a PET image, all I need is a voxelized source right?</div><div style="font-size:13px;font-family:Tahoma">
<br></div><div style="font-size:13px;font-family:Tahoma">2. I added a voxelized source to the world (w/ header file, rangeTranslation table, and the phantom binary image). It seems to work (Gate didn't complain), but I am not sure. </div>
<div style="font-size:13px;font-family:Tahoma">Is there any way I can visualize the source to make sure it is in the right place? </div><div style="font-size:13px;font-family:Tahoma"><br>
</div><div style="font-size:13px;font-family:Tahoma">3. If a phantom is actually a source, what is voxelized phantom for then? </div><div style="font-size:13px;font-family:Tahoma"><br></div>
<div style="font-size:13px;font-family:Tahoma">Sorry for not being articulate my questions as I am so confused now. </div><div style="font-size:13px;font-family:Tahoma"><br></div><div style="font-size:13px;font-family:Tahoma">
Thanks,</div><div style="font-size:13px;font-family:Tahoma">Stephen </div></div><div><br></div><div><br></div></div><div><div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Mar 6, 2014 at 5:53 AM, Simon Stute <span dir="ltr"><<a href="mailto:gate.stute@gmail.com" target="_blank">gate.stute@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>Hi,<br><br></div>Just follow the documentation : <a href="http://wiki.opengatecollaboration.org/index.php/Users_Guide_V7.0:Voxelized_Source_and_Phantom" target="_blank">http://wiki.opengatecollaboration.org/index.php/Users_Guide_V7.0:Voxelized_Source_and_Phantom</a><br>
<br></div><div>Regards,<br></div>Simon<br></div><div class="gmail_extra"><br><br><div class="gmail_quote"><div><div>On Wed, Mar 5, 2014 at 8:55 PM, Stephen Yip <span dir="ltr"><<a href="mailto:stephen.fyip1@gmail.com" target="_blank">stephen.fyip1@gmail.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div><div dir="ltr">Hi,<div><br></div><div>I have a phantom image (with different radioactivity in different parts of anatomy) in binary format. I would love to obtain a PET projection of the phantom image. </div>
<div><br></div>
<div>1. Can GATE read binary? Do I need to convert the image into another format?</div><div><br></div><div>2. How do I use insert the phantom in the written macro of a PET scanner? </div><div><br></div><div>Thanks!</div>
<span><font color="#888888">
<div>
Stephen </div></font></span></div>
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