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</o:shapelayout></xml><![endif]--></head><body lang=KO link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Dear Gate users.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I create a new PET system follows the Gate user manual. (my gate version is 6.2)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Actually I try to do the simulation with point source, the result image shows a point also. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>And sinogram is also good.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>However, the time difference histogram is not common things.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I attached it as image files in this e-mail.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>In real system, the random part of time histogram has a symmetry distribution. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>However it has asymmetry distribution in the simulation.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Which part makes this?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>If you know or guess, please let me know. I want to fix it.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Here is associated script..<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thank you.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=a><span lang=EN-US><o:p> </o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/Singles/insert timeResolution </span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/Singles/timeResolution/setTimeResolution 2.1 ns <o:p></o:p></span></p><p class=a><span lang=EN-US><o:p> </o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/Singles/insert deadtime</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/Singles/deadtime/setDeadTime 3000000. ps</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/Singles/deadtime/setMode nonparalysable</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/Singles/deadtime/chooseDTVolume level1<o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'><o:p> </o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/name Coincidences</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/insert coincidenceSorter</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/Coincidences/setInputName Singles</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/Coincidences/setWindow 20. ns</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/Coincidences/setOffset 0. ns</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/Coincidences/describe<o:p></o:p></span></p><p class=a><span lang=EN-US><o:p> </o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/name delay</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/insert coincidenceSorter</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/delay/setWindow 20. ns</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/delay/setOffset 500. ns</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/delay/describe<o:p></o:p></span></p><p class=a><span lang=EN-US><o:p> </o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/name finalCoinc</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/insert coincidenceChain</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/finalCoinc/addInputName delay</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/finalCoinc/addInputName Coincidences</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/finalCoinc/usePriority true</span><span lang=EN-US><o:p></o:p></span></p><p class=a><span lang=EN-US style='font-family:"함초롬바탕","serif"'>/gate/digitizer/finalCoinc/describe</span><span lang=EN-US><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Best Regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Yohan<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div>
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