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lang=EN-US><FONT face=Calibri>Thank you for your reply and paper, I try to
simulation the system using GATE, But I find the Intrinsic Activity Single
events energy spectrum as follows, I'm not sure why appear the 630keV
photopeak???<o:p></o:p></FONT></SPAN></P><!--EndFragment--></DIV></DIV>
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regards,</DIV>
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<DIV>2015-05-08</DIV>
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<DIV style="COLOR: #c0c0c0">Wu Guocheng
<DIV style="COLOR: #c0c0c0">RNS Department
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<DIV style="COLOR: #c0c0c0">Neusoft Medical System Co., Ltd.
<DIV
style="COLOR: #c0c0c0">No. 16 Century Road. Hun Nan New District
<DIV style="COLOR: #c0c0c0">Shenyang 110179, PRC
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<DIV
style="COLOR: #c0c0c0">Tel: (86 24) 8366 2656</SPAN></SPAN></SPAN></DIV></DIV></DIV></DIV></DIV></DIV></DIV></DIV></DIV><p>---------------------------------------------------------------------------------------------------<br>
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