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

[Pietrzyk, Uwe]

Hi Debora,

for Isotopes like In-111 or I-123 you should use the ion as the particle in
the source description and leave the energy type as Mono.

See also the attached macro, which I used for the EduGATE - Spectro example.
I also copy the macro here in case there is a problem with attachments,
while sending a reply to the “gate-user-list”.
(The aliases like {Ion_Z_val} and {Ion_A_val}, etc are replaced by the selection
from the menu of the GUI running the example as shown in the Readme).

Hope this is helpful for you,

Kind regards,

Uwe Pietrzyk
-----------------------------------------------------------------------------------------------
#
# S O U R C E S
#

# source: ion
/gate/source/addSource        IonSource

/gate/source/IonSource/setActivity        {SourceActivity}


/gate/source/IonSource/gps/type Volume
/gate/source/IonSource/gps/shape Sphere
#/gate/source/IonSource/gps/radius 0.1 mm
/gate/source/IonSource/gps/radius {SourceRad}
/gate/source/IonSource/gps/centre 0.0 0.0 0.0 cm

##
## universal ion source
## with arbitrary halflife
##
/gate/source/IonSource/gps/particle ion
/gate/source/IonSource/gps/ion {Ion_Z_val} {Ion_A_val} 0 0
/gate/source/IonSource/setForcedUnstableFlag true
/gate/source/IonSource/setForcedHalfLife 99999999.0 s
/gate/source/IonSource/gps/energytype Mono
/gate/source/IonSource/gps/monoenergy 0. MeV
/gate/source/IonSource/gps/number 1

/gate/source/IonSource/gps/angtype iso
/gate/source/IonSource/gps/mintheta 0. deg
/gate/source/IonSource/gps/maxtheta 180. deg
/gate/source/IonSource/gps/minphi 0. deg
/gate/source/IonSource/gps/maxphi 360. deg

/gate/source/list

#/gate/source/IonSource/gps/confine source_vol


/----------------------------------------------------------------------
Prof. Dr. Uwe Pietrzyk
Diplom-Physiker
Institut für Neurowissenschaften und Medizin / INM-4
Forschungszentrum Jülich GmbH
52425 Jülich
Tel: +49-2461-61 4763
Fax: +49-2461-61 2820
Mobil: +49-162-103-4871
eMail: U.Pietrzyk at fz-juelich.de<mailto:U.Pietrzyk at fz-juelich.de>
http://www.fz-juelich.de/inm/inm-4/DE/Home/home_node.html
&
Bergische Universität Wuppertal
Fachbereich C - Physik / D.08.01
Gaußstr. 20
42097 Wuppertal
Tel: +49-(0)202-439-3523
Fax: +49-(0)202-439-2811
eMail: Uwe.Pietrzyk at physik.uni-wuppertal.de<mailto:Uwe.Pietrzyk at physik.uni-wuppertal.de>
http://www.medizinphysik.uni-wuppertal.de<http://www.medizinphysik.uni-wuppertal.de/>
----------------------------------------------------------------------/





On 14 Jan 2015, at 16:24, D�bora 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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