[Gate-users] How to create a Hoffman phantom?

[AliAsghar Parach]

Dear Tatsuya
"GateMaterialDatabase: did not load properties table for material  'Vacuum'.
This is only a problem when OPTICAL PHOTONS are transported in this
material"
this is just a warning when using optical photons and is not error.

but "PANIC! - G4SmartVoxelHeader::BuildNodes()
        Daughter physical volume hof_brainVoxel_PVP
        is entirely outside mother logical volume hof_brain_L !!
*** G4Exception : InvalidSetup
     issued by : G4SmartVoxelHeader::BuildNodes()
Overlapping daughter with mother volume."

I had this error before with GATE5 but this is not appeared with Gate4,6.
If you like to use GATE5, I think please change the "
parameterizedBoxMatrix" to "compressedMatrix" to solve your problem.

regards
hope this help you.
2011/1/14 Tatsuya Tsukahara <Tatsuya.Tsukahara at mc7.seikyou.ne.jp>

> Hello dear Gate-Users,
>
> I have installed gate_v5.0.0_p01 and geant4.9.1.p03.
> And I'm simulating a PET system.
>
> Now, I'm trying to create a Hoffman phantom.
> But I had the following warnings:
> ---------------------------------------------------------------------
> GateMaterialDatabase: did not load properties table for material  'Vacuum'.
> This is only a problem when OPTICAL PHOTONS are transported in this
> material.'
> ---------------------------------------------------------------------
> This kind of warning also appears with: Lung, Brest, Plastic.
>
> In addition,
> ---------------------------------------------------------------------
> GateGeometryVoxelInterfileReader::ReadFile: WARNING: voxel not added
> (material translation not found); value: 1
> ---------------------------------------------------------------------
> And finally,
> ---------------------------------------------------------------------
> PANIC! - G4SmartVoxelHeader::BuildNodes()
>         Daughter physical volume hof_brainVoxel_PVP
>         is entirely outside mother logical volume hof_brain_L !!
>
> *** G4Exception : InvalidSetup
>      issued by : G4SmartVoxelHeader::BuildNodes()
> Overlapping daughter with mother volume.
> -------------------------------------------------------------------------
>
> Below is the code that I used for the phantom and the source.
> I read the user's guide but I didn't understand which parameter I
> should change.
> Any kind of hints or solutions to my problem are appreciated.
>
> Additionally I have troubles with "point source".
> I obtained correct data with Volume source but I couldn't get enough
> counts with Point source.
> Code for the point source is after Hoffman code.
> Any kind of hints or solutions to this problem too are appreciated.
>
>
> Thank you for your help.
>
> ************************************************
> Tohoku University, Japan
> Tatsuya Tsukahara
> E-Mail：Tatsuya.Tsukahara at mc7.seikyou.ne.jp
> *************************************************
>
>
> CODE
> ======================================================
> #PHANTOM
> /gate/world/daughters/name hof_brain
> /gate/world/daughters/insert parameterizedBoxMatrix
> /gate/hof_brain/geometry/insertReader interfile
> /gate/hof_brain/interfileReader/insertTranslator range
> /gate/hof_brain/interfileReader/rangeTranslator/readTable range.dat
> /gate/hof_brain/interfileReader/rangeTranslator/describe 1
> /gate/hof_brain/interfileReader/readFile hof3.h33
> /gate/hof_brain/placement/setTranslation  0. 0. 0. mm
> /gate/hof_brain/placement/setRotationAxis 1 0 0
> /gate/hof_brain/placement/setRotationAngle 0 deg
> /gate/hof_brain/attachVoxelPhantomSD
>
> /gate/hof_brain/addOutput doseOutput
> /gate/output/doseOutput/saveUncertainty true
> /gate/output/doseOutput/setFileName hof_brain_paraDose.bin
>
> #SOURCE
> /gate/source/addSource voxel_brain voxel
>
> /gate/source/voxel_brain/reader/insert interfile
> /gate/source/voxel_brain/interfileReader/translator/insert range
> /gate/source/voxel_brain/interfileReader/rangeTranslator/readTable
> activityRange.dat
> /gate/source/voxel_brain/interfileReader/rangeTranslator/describe 1
> /gate/source/voxel_brain/interfileReader/readFile hof3.h33
>
> /gate/source/voxel_brain/setType backtoback
> /gate/source/voxel_brain/gps/particle gamma
> /gate/source/voxel_brain/setForcedUnstableFlag true
> /gate/source/voxel_brain/setForcedHalfLife 6586.2 s
> /gate/source/voxel_brain/gps/energytype Mono
> /gate/source/voxel_brain/gps/monoenergy 0.511 MeV
> /gate/source/voxel_brain/setPosition   -128. -128. -55. mm
> /gate/source/voxel_brain/gps/confine NULL
> /gate/source/voxel_brain/gps/angtype iso
> /gate/source/voxel_brain/dump 1
>
> /gate/source/list
>
> ========================================================================
> #POINT SOURCE
> /gate/source/addSource twogamma
> /gate/source/twogamma/setActivity 37000000. becquerel
> /gate/source/twogamma/gps/particle gamma
> /gate/source/twogamma/setType backtoback
> /gate/source/twogamma/setAccolinearityFlag false
> /gate/source/twogamma/setAccoValue 0.5 deg
> /gate/source/twogamma/gps/centre 0.0 0.0 0.0 mm
> /gate/source/twogamma/gps/energytype Mono
> /gate/source/twogamma/gps/monoenergy 0.511 MeV
> /gate/source/twogamma/gps/type Point
> #/gate/source/twogamma/gps/type Volume
> #/gate/source/twogamma/gps/shape Sphere
> #/gate/source/twogamma/gps/shape Cylinder
> #/gate/source/twogamma/gps/radius 0.3 mm
> #/gate/source/twogamma/gps/halfz 20. mm
> #/gate/source/twogamma/gps/confine NULL
> /gate/source/twogamma/gps/angtype iso
> /gate/source/twogamma/gps/mintheta 90. deg
> /gate/source/twogamma/gps/maxtheta 90. deg
> /gate/source/twogamma/gps/minphi 0. deg
> /gate/source/twogamma/gps/maxphi 360. deg
> /gate/source/list
>
>
>
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-- 
Ali Asghar Parach,Ph.D. student in Medical Physics,Tarbiat Modares
University,Tehran,Iran