<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div apple-content-edited="true">Hi Mike, </div><div apple-content-edited="true"><br></div><div apple-content-edited="true">Just had a quick look but seems you have a "geometry vs source" issue. </div><div apple-content-edited="true">The origin of the scale for the voxelized source is not set in the center of the geometry but at one corner (never remember which one). </div><div apple-content-edited="true">To match both scales, you need to shift your voxelized source by half of its total dimension using SetPosition) </div><div apple-content-edited="true"><br></div><div apple-content-edited="true">for more info, see <a href="http://wiki.opengatecollaboration.org/index.php/Users_Guide_V6:Voxelized_Source_and_Phantom">http://wiki.opengatecollaboration.org/index.php/Users_Guide_V6:Voxelized_Source_and_Phantom</a> </div><div apple-content-edited="true">under voxelized source section. </div><div apple-content-edited="true"><br></div><div apple-content-edited="true">I would also make sure the size of the voxels is consistent for the geometry and the voxelized source. </div><div apple-content-edited="true"><br></div><div apple-content-edited="true">Hope this helps </div><div apple-content-edited="true"><br></div><div apple-content-edited="true">Thibault </div><div apple-content-edited="true"><br></div><div apple-content-edited="true"><br class="Apple-interchange-newline">
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<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div>Post-doctoral fellow</div><div>Division of Medical Imaging Physics </div><div>Johns Hopkins Medical Institutions</div><div>JHOC 4260, 601 N. Caroline street, Baltimore, MD, 21287</div><div>Tel: +1 410 502 3772</div><div>Fax: +1 410 614 1060</div><div><a href="http://www.hopkinsradiology.org/dmip/">http://www.hopkinsradiology.org/dmip/</a></div></div><div><br></div></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
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<br><div><div>On Jan 27, 2014, at 11:09 AM, Mike Tabriz <<a href="mailto:mtabriz@yahoo.com">mtabriz@yahoo.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><div style="background-color: rgb(255, 255, 255); font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 12pt; "><div style="RIGHT: auto">Dear GATE users,</div>
<div style="RIGHT: auto">In an attempt to simulate collection of dose in thyroid (target) from activity in lungs (source) I get the following images. Capture 4 shows a head slice from the Zubal phantom. Capture 5 shows the Edep image output file at the same exact slice. What is curious about this output image is that the head appears to be embedded in the lungs!</div>
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<div style="RIGHT: auto">Any opinions as to the cause of this phenomenon is greatly appreciated.</div>
<div style="RIGHT: auto"> </div>
<div style="RIGHT: auto">With thanks in advance,</div>
<div style="RIGHT: auto">Mike </div></div></div><span><Capture4.PNG></span><span><Capture5.PNG></span>_______________________________________________<br>Gate-users mailing list<br><a href="mailto:Gate-users@lists.opengatecollaboration.org">Gate-users@lists.opengatecollaboration.org</a><br>http://lists.opengatecollaboration.org/mailman/listinfo/gate-users</blockquote></div><br></body></html>