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<p class=MsoNormal style='text-align:justify'><a name="OLE_LINK2"></a><a
name="OLE_LINK1"><font size=3 face="Arial Narrow"><span lang=EN-GB
style='font-size:12.0pt;font-family:"Arial Narrow"'>Dear GATE users:<o:p></o:p></span></font></a></p>
<p class=MsoNormal style='text-align:justify'><font size=3 face="Arial Narrow"><span
lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-align:justify'><font size=3 face="Arial Narrow"><span
lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'>I’m using
GATE to test a SPECT scanner with a pin-hole collimator. During its validation
process, I became aware that simulation results with collimator and without
collimator are exactly the same. Strangely, on the collimator’s simulation,
I haven’t any information concerning the <st1:place w:st="on"><st1:City
w:st="on">Compton</st1:City></st1:place> diffusion in collimator.
Additionally, no errors were presented during the macro execution. <o:p></o:p></span></font></p>
<p class=MsoNormal style='text-align:justify'><font size=3 face="Arial Narrow"><span
lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-align:justify'><font size=3 face="Arial Narrow"><span
lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'>I’m now
analysing .root and .dat files to find a reason for these results. However, I
have some questions regarding these files:<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-align:justify'><font size=3 face="Arial Narrow"><span
lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:36.0pt;text-align:justify;text-indent:
-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><font size=3 face=Symbol><span
lang=EN-GB style='font-size:12.0pt;font-family:Symbol'><span style='mso-list:
Ignore'>-<font size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font face="Arial Narrow"><span
lang=EN-GB style='font-family:"Arial Narrow"'>Suppose that I attach more than
one PhantomSD to different volumes (e.g. collimator, table, etc.) on a SPECT
scanner. By default will I have these sensitive volumes defined on comptVolName
Canvas?<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-align:justify'><font size=3 face="Arial Narrow"><span
lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:36.0pt;text-align:justify;text-indent:
-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><font size=3 face=Symbol><span
lang=EN-GB style='font-size:12.0pt;font-family:Symbol'><span style='mso-list:
Ignore'>-<font size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font face="Arial Narrow"><span
lang=EN-GB style='font-family:"Arial Narrow"'>Is sourcePosX,Y,Z coordinates
related to the source emission? And what about globalPosXYZ?<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-align:justify'><font size=3 face="Arial Narrow"><span
lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:36.0pt;text-align:justify;text-indent:
-18.0pt;mso-list:l0 level1 lfo1'><![if !supportLists]><font size=3 face=Symbol><span
lang=EN-GB style='font-size:12.0pt;font-family:Symbol'><span style='mso-list:
Ignore'>-<font size=1 face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font face="Arial Narrow"><span
lang=EN-GB style='font-family:"Arial Narrow"'>What is meant by “XYZ
position of the <u>annihilation</u> in world referencial” on
gateSingles.dat description on page 139 of GATE’s manual (v. 3.1.2)? <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:18.0pt;text-align:justify'><font size=3
face="Arial Narrow"><span lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:18.0pt;text-align:justify'><font size=3
face="Arial Narrow"><span lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-align:justify'><font size=3 face="Arial Narrow"><span
lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'>Thank you for your
help.<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-align:justify'><font size=3 face="Arial Narrow"><span
lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-align:justify'><font size=3 face="Arial Narrow"><span
lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'>King regards,<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-align:justify'><font size=3 face="Arial Narrow"><span
lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-align:justify'><font size=3 face="Arial Narrow"><span
lang=EN-GB style='font-size:12.0pt;font-family:"Arial Narrow"'>Ana Oliveira</span></font><font
face="Arial Narrow"><span lang=EN-GB style='font-family:"Arial Narrow"'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
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