[Gate-users] SPECT with I-123 and In-111

[Marc Chamberland]

Hi Débora,

If you don’t mind potentially increasing your computing time, use the ion source type. This models the full decay of the source with the appropriate energy, abundance, etc.
See the User’s Guide for more details: http://wiki.opengatecollaboration.org/index.php/Users_Guide_V7.0:Source#Defining_the_type_of_source

This type of source uses the Geant4 Radioactive Decay data files.

Cheers,
Marc



__________________________

Marc Chamberland, MSc
PhD candidate
Department of Physics
Carleton University
Ottawa (ON)

On Jan 14, 2015, at 10:24, Débora Salvado <debbiesal at gmail.com<mailto:debbiesal at gmail.com>> wrote:

Dear GATE users,

How should I define the energy type for I-123 and In-111 in my SPECT simulations?

For Tc-99m, I'm using :
particle                 gamma
energytype            Mono
monoenergy          141. keV
setForcedHalfLife   6. h

but In-111 has two photopeaks (171 and 245 keV) and I-123 has a significant amount of photons (abundance 3.1%) with a higher energy than the photopeak (159 keV), so I'm not sure how to define my source in either of the cases, I-123 and In-111.

Thanks.
Debora Salvado
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