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<p class="MsoNormal"><span style="font-size:11.0pt">Dear GATE users,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">We want to use the AnnihilationRangeActor, as described in GATE benchmark test 3, to determine positron ranges for different ion sources. I ran t3_range_e+ (GATE v9.1; Geant 4-10-07) for F-18, as specified,
and additionally Rb-82, and found that the x- and z-coordinates of the annihilations in the .root are identical. Despite this, the mean and max range were within the benchmark tolerances for both sources.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Has this behaviour been observed by anyone else?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Many thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Francesca Leek<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">PhD student<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt">Institute of Nuclear Medicine, UCL<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><img width="505" height="379" style="width:5.2604in;height:3.9479in" id="Picture_x0020_7" src="cid:image001.png@01D88C64.5AA63590"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
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