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After doing a little bit of digging, I found that the GateNoise.cc file sets the position of the noise according to the command:</div>
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pulse->SetGlobalPos(system->ComputeObjectCenter(volID));</div>
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If anyone has a trivial solution or any suggestions on how to easily correct this to obtain random positions throughout the crystal, it would be greatly appreciated.</div>
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Thank you,</div>
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Matthew<br>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Matthew Strugari<br>
<b>Sent:</b> August 16, 2019 3:13 PM<br>
<b>To:</b> gate-users@lists.opengatecollaboration.org <gate-users@lists.opengatecollaboration.org><br>
<b>Subject:</b> Background noise source</font>
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Hi all,</div>
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I am interested in modelling background noise in my SPECT images and I have included the lines below in my macro. Is there a way to include a random spatial distribution for the noise? I expected that the background noise would appear randomly throughout the
crystal but all of the counts associated with background noise are located directly in the center of my crystal.<br>
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<span># N O I S E<br>
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<div>/gate/distributions/name energy_distrib<br>
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<div>/gate/distributions/insert Flat<br>
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<div>/gate/distributions/energy_distrib/setMin 30 keV<br>
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<div>/gate/distributions/energy_distrib/setMax 300 keV<br>
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<div>/gate/distributions/name dt_distrib<br>
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<div>/gate/distributions/insert Gaussian<br>
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<div>/gate/distributions/dt_distrib/setMean 12.5 ms<br>
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<div>/gate/distributions/dt_distrib/setSigma 1.4 ms<br>
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<div>/gate/digitizer/Singles/insert noise<br>
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<div>/gate/digitizer/Singles/noise/setEnergyDistribution energy_distrib<br>
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<span>/gate/digitizer/Singles/noise/setDeltaTDistribution dt_distrib</span></div>
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Cheers,<br>
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<span style="font-family:Calibri,Helvetica,sans-serif">Matthew</span></p>
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<span style="font-size:10.5pt; color:black; font-family:Calibri,Helvetica,sans-serif">--</span></p>
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<span style="font-size:10.5pt; color:black; font-family:Calibri,Helvetica,sans-serif">Matthew Strugari</span><span style="font-size:10.5pt; color:black"></span></p>
<span style="font-family:Calibri,Helvetica,sans-serif"></span><span style="font-size:10.5pt; color:black" lang="EN-US"><span style="font-family:Calibri,Helvetica,sans-serif">Biomedical Translational Imaging Centre -
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<span style="font-family:Calibri,Helvetica,sans-serif">5890 University Ave, </span><br>
<span style="font-family:Calibri,Helvetica,sans-serif">Halifax, NS, B3K 6R8</span></span><br>
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