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

[Débora Salvado]

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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