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<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'>Dear Gate users<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'>1<sup>st</sup> question is ..<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'>During gate simulation, I found
following error message<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'>Is it negligible?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'>[GateTrajectoryNavigator::FindAnnihilationGammasTrackID]
WARNING : positron found and photonID vector size: 1<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'>2<sup>nd</sup> question is about the
Positron range of F-18<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'>In the literature, positron range of
F-18 was 0.2 mm at water<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'>However, I found that the positron
range of F-18 was 0.43 mm at water in GATE simulation.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'>What is the difference of that?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'>Best regards<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=굴림><span lang=EN-US
style='font-size:10.0pt;font-family:Gulim'><o:p> </o:p></span></font></p>
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lang=EN-US style='font-size:10.0pt;font-family:"Comic Sans MS";color:navy'> </span></font><font
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