[gate-users] set the tumor/background activity ratio

[Giovanni Santin]

Hi Jin
Sorry for the late answer.
You can rotate the cylinder with the GPS commands 'posrot1', 'posrot2'. 
To get only the half cylinder, you can then use 'confine'.

Please refer to 
http://reat.space.qinetiq.com/gps/
to get an exhaustive description of GPS. Please note that the command 
syntax changed slightly in the last version of GPS compared to the one 
included in GATE. But the features offered are the same.

I will try to upgrade GATE to the latest version of GPS as soon as 
possible.

Cheers,
-- 
Giovanni
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Giovanni Santin
Space Environments and Effects Analysis
ESA - ESTEC - TEC-EES
Keplerlaan 1, 2200 AG Noordwijk, Netherlands
e-mail: giovanni.santin at esa.int
Tel: +31 71 565 6267
Fax: +31 71 565 4999


On Sat, 24 Jul 2004 null99 at mails.tsinghua.edu.cn wrote:

> Dear Jin,
> 
> Yep, Gate mannule (GM) can't provide the right type information for you. The
> attachment is a brief list of command appeared under:
> /gate/source/your_source_name/gps/
> 
> Sorry, because my mouse's problem, I can't paste it for you.
> 
> Good luck!
> 
> Long Zhang
> In your mail:
> >From: Jin Zhang <jinzhang at stanford.edu>
> >Reply-To: GATE feedback and helpline for Users <gate-users at lphe1pet1.epfl.ch>
> >To: GATE feedback and helpline for Users <gate-users at lphe1pet1.epfl.ch>
> >Subject: [gate-users] set the tumor/background activity ratio
> >
> >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!
> > 
> > Jin Zhang
> > 
> > 
> > _______________________________________________
> > gate-users mailing list
> > gate-users at lphe1pet1.epfl.ch
> > http://lphe1pet1.epfl.ch/mailman/listinfo/gate-users
> >
> 
> 
>