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<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'>Dear Gate
users<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'>I have
simulated the microPET R4 scanner and NEMA like rat phantom (Fig 1)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'>F-18 source
(70 MBq) was simulated for the calculation of scatter component in the phantom.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'>Fig 2 (a) was
simulated using GATE 3.0 and Fig 2 (b) was simulated using Gate 4.0<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'>I found that
there was some difference in the results using GATE 4.0.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'>Although
activity was the same, entires was quite different (gate 3.0: 958, gate 4.0:
705222)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'>Simulation
code was the same in both GATE code.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'>Why this
difference was occurred? <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'>Best regards<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'>Kim JS<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'>F-18 source
was below </span></font><font size=1 color=navy face=굴림><span
lang=EN-US style='font-size:7.0pt;font-family:Gulim;color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/addSource fluor18<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/setActivity 70000000 becquerel<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/gps/particle ion<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/gps/ion 9 18 0 0 <o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/gps/energytype Mono<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/gps/monoenergy 0. MeV<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/gps/angtype iso<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/gps/number 1<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/gps/centre 0. -1.5 0. cm<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/gps/type Volume<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/gps/shape Cylinder<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/gps/radius 1. mm<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/gps/halfz 7.5 cm<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/setForcedUnstableFlag true<o:p></o:p></span></font></p>
<p class=MsoNormal align=left style='text-align:left;word-break:keep-all'><font
size=1 face=굴림><span lang=EN-US style='font-size:7.0pt;
font-family:Gulim'>/gate/source/fluor18/setForcedHalfLife 6586 s<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'><img
width=599 height=432 id="_x0000_i1029" src="cid:image002.gif@01C991B3.9BE88450"><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=굴림><span
lang=EN-US style='font-size:10.0pt;font-family:Gulim;color:navy'><o:p> </o:p></span></font></p>
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