[Gate-users] Re : SetTranslation & spResolution
Samuel BURG
samuel_burg at yahoo.fr
Tue Aug 31 21:03:54 CEST 2010
Hi,
1)
set translation is "center-to-center"
2)
for spblurring, it isFWHM, (even if in doc it is written that it is sigma, a
little error, you can check it in source code)
best regards,
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Samuel Burg
Mail : <samuel_burg at yahoo.fr>
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"Aw, come on, who would be so stupid as to insert a cast
to make an error go away without actually fixing the error?"
Apparently everyone.
-- Raymond Chen --
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________________________________
De : "Rajaram, Ramya (H USA)" <ramya.rajaram at siemens.com>
À : gate-users at lists.opengatecollaboration.org
Envoyé le : Mar 31 août 2010, 18h 39min 30s
Objet : [Gate-users] SetTranslation & spResolution
Dear Gaters,
I have two (probably) trivial questions:
1. With setTranslation, is the distance then from center of mother
volume to "center of daughter volume" or is that center of mother volume
to "one edge/surface of daughter volume"? For example, if my world is
200x200x200 cm, and if SPECThead (of dimensions 6x50x40) is translated
by giving /gate/SPECThead/placement/setTranslation 20. 0. 0. cm, then
what does 20 cm signify?
2. When we set the spatial blurring for SPECT with
/gate/digitizer/Singles/spblurring/setSpresolution 2.0 mm, does 2.0 mm
have to be the "sigma of the Gaussian" or the "FWHM"?
Any help is greatly appreciated.
Thanks!
Ramya
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