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<DIV style="FONT-FAMILY: 华文仿宋; COLOR: #000000; FONT-SIZE: 12pt">Dear
Gaters,</DIV>
<DIV style="FONT-FAMILY: 华文仿宋; COLOR: #000000; FONT-SIZE: 12pt"> </DIV>
<DIV style="FONT-FAMILY: 华文仿宋; COLOR: #000000; FONT-SIZE: 12pt">LSO and LYSO
have intrinsic radioactivity due to the<SUP> </SUP>presence of <SUP>176</SUP>Lu.
and I want to simulation of the <SUP> </SUP>intrinsic activity using
GATE, but I don't know how to define The intrinsic background？</DIV>
<DIV style="FONT-FAMILY: 华文仿宋; COLOR: #000000; FONT-SIZE: 12pt">Does anyone
know how to define this?</DIV></DIV>
<DIV
style="FONT-FAMILY: 华文仿宋; COLOR: #000000; FONT-SIZE: 12pt">
</DIV>
<DIV style="FONT-FAMILY: 华文仿宋; COLOR: #000000; FONT-SIZE: 12pt">With kind
regards,</DIV>
<DIV>2015-05-07</DIV>
<DIV>
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<DIV><SPAN><SPAN
style="FONT-FAMILY: 宋体; COLOR: #000000; FONT-SIZE: 10.5pt"><SPAN
style="FONT-FAMILY: 宋体; COLOR: #000000; FONT-SIZE: 10.5pt">
<DIV style="COLOR: #c0c0c0">Wu Guocheng
<DIV style="COLOR: #c0c0c0">RNS Department
<DIV style="COLOR: #c0c0c0">
<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
<DIV style="COLOR: #c0c0c0">
<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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