[Homer-users] tMCimg.C question

[Bryan McLaughlin]

All,

I have a question regarding the use of TMCimg.  When I run the simulation
with a simple, linear transmission geometry, TMCimg always moves my source
and detectors to a nearby boundary defined in the user defined ".BIN"
segmentation file.  However, if I run TMCimg with the switch "-d" which is
supposed to force TMCimg to NOT move the detector, the program runs and the
.HIS history file is empty.  This is strange because if I let it move the
detectors to the boundary, then I get sensible data in the .HIS history
file.

 

I suspect that if the detector aperture is not at the boundary, then the
program is somehow not counting the photon exiting from the system and this
is why the .HIS is empty.  I just cannot understand why if the detector is
at an arbitrary location inside one of the tissues that the result is an
empty HIS file.

 

Is there any way around this?  I could potentially just define a .BIN with
some artificial boundaries so that when TMCimg moves them then I know they
are at a sensible location that will correctly represent the simulation I
intend to do.

 

Kind Regards,

Bryan

 







 

 



Bryan McLaughlin
PhD Candidate 

Cambridge University
544 King's College
Cambridge CB2 1ST
United Kingdom 


 <mailto:bryan.mclaughlin at marshallscholarship.org>
bryan.mclaughlin at marshallscholarship.org
 <mailto:bm304 at cam.ac.uk> bm304 at cam.ac.uk
IM: mclaugb_uk 


mobile: 

UK 0+44+(0)7976 000620 

 



 <https://www.plaxo.com/add_me?u=34360306184&v0=1131847&k0=61695027> Add me
to your address book...

 <http://www.plaxo.com/signature> Want a signature like this?

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.nmr.mgh.harvard.edu/pipermail/homer-users/attachments/20060306/e811db03/attachment.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/gif
Size: 4474 bytes
Desc: not available
Url : http://mail.nmr.mgh.harvard.edu/pipermail/homer-users/attachments/20060306/e811db03/attachment.gif