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<p class="MsoNormal">Hi Gate users…<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have successfully confined a STL defined volume source (heart) containing Tc-99m and I can place that within a body (src_Heart in code below) so long as “body” is a simple shape( a box in macro1). When I attempt to place the same confined
src_Heart within a “body” described by a tessellated surface, I get loop 100000 errors and I can visualise dots indicating the source positions for decay are not located within the heart (macro2). Below I include the important parts of my macros which attempt
to do this – note for any run I only attempt to run either macro2 OR macro2 – not both.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is it possible to encapsulate a confined source volume within a tessalated surface (body in my case)?
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any ideas much appreciated<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best wishes<o:p></o:p></p>
<p class="MsoNormal">Steve<o:p></o:p></p>
<p class="MsoNormal">-----------------------------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal">Macro1) This works well…body is a simple box<o:p></o:p></p>
<p class="MsoNormal">gate/world/daughters/name body<o:p></o:p></p>
<p class="MsoNormal">/gate/world/daughters/insert box<o:p></o:p></p>
<p class="MsoNormal">/gate/body/geometry/setXLength 20 cm<o:p></o:p></p>
<p class="MsoNormal">/gate/body/geometry/setYLength 20 cm<o:p></o:p></p>
<p class="MsoNormal">/gate/body/geometry/setZLength 20 cm<o:p></o:p></p>
<p class="MsoNormal">/gate/body/vis/setColor blue<o:p></o:p></p>
<p class="MsoNormal">/gate/body/vis/forceWireframe<o:p></o:p></p>
<p class="MsoNormal">/gate/body/setMaterial Air<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">## ---IMPORT STL FOR HEART AND POSITION IN BODY<o:p></o:p></p>
<p class="MsoNormal">/gate/body/daughters/name heart<o:p></o:p></p>
<p class="MsoNormal">/gate/body/daughters/insert tessellated<o:p></o:p></p>
<p class="MsoNormal">/gate/heart/geometry/setPathToSTLFile data/patientData/STLFiles/Heart_Only.stl<o:p></o:p></p>
<p class="MsoNormal">/gate/heart/setMaterial Heart<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">--------------------------------------------------------------------------------------------------------------------------- END Macro1<o:p></o:p></p>
<p class="MsoNormal">Macro2) This doesn’t work – body is a tessalated surface<o:p></o:p></p>
<p class="MsoNormal">gate/world/daughters/name body<o:p></o:p></p>
<p class="MsoNormal">/gate/world/daughters/insert tessellated<o:p></o:p></p>
<p class="MsoNormal">/gate/body/geometry/setPathToSTLFile data/patientData/STLFiles/Body.stl<o:p></o:p></p>
<p class="MsoNormal">/gate/body/setMaterial Body<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">#-----IMPORT STL FOR HEART AND POSITION IN BODY <o:p></o:p></p>
<p class="MsoNormal">/gate/body/daughters/name heart<o:p></o:p></p>
<p class="MsoNormal">/gate/body/daughters/insert tessellated<o:p></o:p></p>
<p class="MsoNormal">/gate/heart/geometry/setPathToSTLFile data/patientData/STLFiles/Heart_Only.stl<o:p></o:p></p>
<p class="MsoNormal">#/gate/heart/geometry/setPathToSTLFile data/patientData/STLFiles/Heart.stl<o:p></o:p></p>
<p class="MsoNormal">/gate/heart/setMaterial Heart<o:p></o:p></p>
<p class="MsoNormal">----------------------------------------------------------------------------------------------------------------------------- End Macro2<o:p></o:p></p>
<p class="MsoNormal">Macro3) the following is used for either of the above to confine the src_Heart volume to the heart STL shape<span style="font-size:8.0pt;font-family:"Arial",sans-serif;color:gray;mso-fareast-language:EN-NZ"><o:p></o:p></span></p>
<p class="MsoNormal">/gate/source/addSource src_Heart gps<o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/gps/particle gamma<o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/gps/pos/type Volume<o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/gps/pos/shape Para<o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/gps/pos/centre 0 0 0 cm <o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/gps/pos/halfx 10 cm <o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/gps/pos/halfy 10 cm <o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/gps/pos/halfz 10 cm <o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/gps/ang/type iso<o:p></o:p></p>
<p class="MsoNormal">#Define the source as a Tc99m source<o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/gps/energytype UserSpectrum<o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/gps/setSpectrumFile data/energy_spectrum_Tc99m.txt<o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/setForcedHalfLife 21624.12 s #6.0 hrs<o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/setForcedUnstableFlag true<o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/setForcedHalfLife 21624.12 s<o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/setActivity {ACTIVITY} MBq<o:p></o:p></p>
<p class="MsoNormal"># Now confine src_Heart to the shape of the heart. <o:p></o:p></p>
<p class="MsoNormal">/gate/source/src_Heart/gps/pos/confine heart<o:p></o:p></p>
<p class="MsoNormal">----------------------------------------------------------------------------------------------------------------------------- End Macro3<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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