Import Geant4 10.5.0 source tree
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#==========================- Pre-initialisation parameters -=========================
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########### Image Quality Phantom ####################
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#choose the type of phantom
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/changePhantom/setPhantom NEMA_imageQualityPhantom_smallAnimal
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#set the activity in the phantom
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/change/Activity 3840000 becquerel #3840000 becquerel
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#Set the halflife of the isotope in units of second
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/change/HalfLife 6586.2 s #Halflife of F-18
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/run/initialize
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/run/verbose 2
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#### The activity strength of all hot regions is the same. Only volume consideration is used to calculate the intensity
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#hotsphere1, diameter = 1 mm
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/gps/source/intensity 1
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/gps/particle ion
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/gps/ion 9 18 0 0 # F-18
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/gps/energy 0 keV
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/gps/pos/type Volume
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/gps/pos/shape Cylinder
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/gps/pos/centre 7 0 -15 mm
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/gps/pos/radius 0.5 mm
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/gps/pos/halfz 10 mm
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/gps/ang/type iso
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#hotsphere2, diameter = 2 mm
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/gps/source/add 4
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/gps/ion 9 18 0 0 # F-18
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/gps/energy 0 keV
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/gps/pos/type Volume
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/gps/pos/shape Cylinder
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/gps/pos/centre 2.16312 6.6574 -15 mm
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/gps/pos/radius 1 mm
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/gps/pos/halfz 10 mm
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/gps/ang/type iso
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#hotsphere3, diameter = 3 mm
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/gps/source/add 9
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/gps/ion 9 18 0 0 # F-18
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/gps/energy 0 keV
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/gps/pos/type Volume
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/gps/pos/shape Cylinder
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/gps/pos/centre -5.66312 4.1145 -15 mm
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/gps/pos/radius 1.5 mm
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/gps/pos/halfz 10 mm
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/gps/ang/type iso
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#hotsphere4, diameter = 4 mm
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/gps/source/add 16
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/gps/ion 9 18 0 0 # F-18
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/gps/energy 0 keV
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/gps/pos/type Volume
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/gps/pos/shape Cylinder
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/gps/pos/radius 2 mm
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/gps/pos/halfz 10 mm
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/gps/pos/centre -5.66312 -4.1145 -15 mm
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/gps/ang/type iso
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#hotsphere4, diameter = 5 mm
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/gps/source/add 25
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/gps/ion 9 18 0 0 # F-18
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/gps/energy 0 keV
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/gps/pos/type Volume
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/gps/pos/centre 2.16312 -6.6574 -15 mm
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/gps/pos/shape Cylinder
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/gps/pos/radius 2.5 mm
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/gps/pos/halfz 10 mm
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/gps/ang/type iso
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#hotsphere4, diameter = 30 mm
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/gps/source/add 1350
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/gps/ion 9 18 0 0 # F-18
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/gps/energy 0 keV
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/gps/pos/type Volume
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/gps/pos/centre 0 0 10 mm
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/gps/pos/shape Cylinder
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/gps/pos/radius 15 mm
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/gps/pos/halfz 15 mm
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/gps/ang/type iso
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#/random/setSeeds 1 2
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/run/beamOn 800000000 #15 minuts scan
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