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<p class="MsoNormal">Hi<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Perhaps one of you can assist me…<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My aim is to import, into my simulation, anatomy (in stl format – though I can change this if necessary) and fill the heart with Tc-99m. I want to assign a total amount of activity to the heart volume – i.e. ideally GATE will evenly spread
the activity within the heart.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have imported the anatomy - via the following:<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">/gate/phantom/daughters/name heart<o:p></o:p></p>
<p class="MsoNormal">/gate/phantom/daughters/insert tessellated<o:p></o:p></p>
<p class="MsoNormal">/gate/heart/geometry/setPathToSTLFile data/Heart.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"><o:p> </o:p></p>
<p class="MsoNormal">And I have hopefully filled the heart with Tc-99m via the following:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">/gate/source/addSource source voxel<o:p></o:p></p>
<p class="MsoNormal">/gate/source/source/gps/particle gamma<o:p></o:p></p>
<p class="MsoNormal">/gate/source/source/gps/type Volume<o:p></o:p></p>
<p class="MsoNormal">/gate/source/source/gps/angtype iso<o:p></o:p></p>
<p class="MsoNormal">/gate/source/source/gps/energytype UserSpectrum<o:p></o:p></p>
<p class="MsoNormal">/gate/source/source/gps/setSpectrumFile data/energy_spectrum_Tc99m.txt<o:p></o:p></p>
<p class="MsoNormal">/gate/source/source/setForcedHalfLife 21624.12 s #6.0 hrs<o:p></o:p></p>
<p class="MsoNormal">/gate/source/source/setActivity 0.001 MBq<o:p></o:p></p>
<p class="MsoNormal">/gate/source/source/attachTo heart<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This (in addition to other code not given above) runs.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My questions are:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Firstly - is the above doing what I am hoping it will do? Will this spread 0.001MBq evenly throughout the heart volume?
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Secondly - my code is running - though it is taking a very long time and is reporting it is up to run 4973100 with an elapsed time of 0.01 or so- does this relate to the release of primary photons - ie appx 5e6 photons have been released
and tracked??<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any advice 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>
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