[gate-users] set the tumor/background activity ratio
jinzhang at stanford.edu
Sat Jul 24 03:19:32 CEST 2004
Hello, first thank Long and Corinne for answering my former question.
Here I got another one to ask.
How to set the tumor/background activity ratio, say to be 5?
I tried to add another source (as background) with 5 times lower
activity than that of the other tumor sources, and with the same size of
the whole phantom. However, as my phantom is a half cylinder aligned
along X axis, I cannot rotate the background source to overlap with the
whole phantom though.
Is there any better way do this? I checked with the Gate manual, but
didn't get any useful information yet. So asking here could be much better.
Thanks in advance and have a nice weekend!
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